CloudWatchLogs

Client

class CloudWatchLogs.Client

A low-level client representing Amazon CloudWatch Logs

You can use Amazon CloudWatch Logs to monitor, store, and access your log files from EC2 instances, CloudTrail, and other sources. You can then retrieve the associated log data from CloudWatch Logs using the CloudWatch console. Alternatively, you can use CloudWatch Logs commands in the Amazon Web Services CLI, CloudWatch Logs API, or CloudWatch Logs SDK.

You can use CloudWatch Logs to:

  • Monitor logs from EC2 instances in real time : You can use CloudWatch Logs to monitor applications and systems using log data. For example, CloudWatch Logs can track the number of errors that occur in your application logs. Then, it can send you a notification whenever the rate of errors exceeds a threshold that you specify. CloudWatch Logs uses your log data for monitoring so no code changes are required. For example, you can monitor application logs for specific literal terms (such as "NullReferenceException"). You can also count the number of occurrences of a literal term at a particular position in log data (such as "404" status codes in an Apache access log). When the term you are searching for is found, CloudWatch Logs reports the data to a CloudWatch metric that you specify.
  • Monitor CloudTrail logged events : You can create alarms in CloudWatch and receive notifications of particular API activity as captured by CloudTrail. You can use the notification to perform troubleshooting.
  • Archive log data : You can use CloudWatch Logs to store your log data in highly durable storage. You can change the log retention setting so that any log events earlier than this setting are automatically deleted. The CloudWatch Logs agent helps to quickly send both rotated and non-rotated log data off of a host and into the log service. You can then access the raw log data when you need it.
client = session.create_client('logs')

These are the available methods:

associate_kms_key(**kwargs)

Associates the specified KMS key with the specified log group.

Associating a KMS key with a log group overrides any existing associations between the log group and a KMS key. After a KMS key is associated with a log group, all newly ingested data for the log group is encrypted using the KMS key. This association is stored as long as the data encrypted with the KMS keyis still within CloudWatch Logs. This enables CloudWatch Logs to decrypt this data whenever it is requested.

Warning

CloudWatch Logs supports only symmetric KMS keys. Do not use an associate an asymmetric KMS key with your log group. For more information, see Using Symmetric and Asymmetric Keys.

It can take up to 5 minutes for this operation to take effect.

If you attempt to associate a KMS key with a log group but the KMS key does not exist or the KMS key is disabled, you receive an InvalidParameterException error.

See also: AWS API Documentation

Request Syntax

response = client.associate_kms_key(
    logGroupName='string',
    kmsKeyId='string'
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • kmsKeyId (string) --

    [REQUIRED]

    The Amazon Resource Name (ARN) of the KMS key to use when encrypting log data. This must be a symmetric KMS key. For more information, see Amazon Resource Names and Using Symmetric and Asymmetric Keys.

Returns

None

Exceptions

can_paginate(operation_name)

Check if an operation can be paginated.

Parameters
operation_name (string) -- The operation name. This is the same name as the method name on the client. For example, if the method name is create_foo, and you'd normally invoke the operation as client.create_foo(**kwargs), if the create_foo operation can be paginated, you can use the call client.get_paginator("create_foo").
Returns
True if the operation can be paginated, False otherwise.
cancel_export_task(**kwargs)

Cancels the specified export task.

The task must be in the PENDING or RUNNING state.

See also: AWS API Documentation

Request Syntax

response = client.cancel_export_task(
    taskId='string'
)
Parameters
taskId (string) --

[REQUIRED]

The ID of the export task.

Returns
None

Exceptions

close()

Closes underlying endpoint connections.

create_export_task(**kwargs)

Creates an export task so that you can efficiently export data from a log group to an Amazon S3 bucket. When you perform a CreateExportTask operation, you must use credentials that have permission to write to the S3 bucket that you specify as the destination.

Exporting log data to S3 buckets that are encrypted by KMS is supported. Exporting log data to Amazon S3 buckets that have S3 Object Lock enabled with a retention period is also supported.

Exporting to S3 buckets that are encrypted with AES-256 is supported.

This is an asynchronous call. If all the required information is provided, this operation initiates an export task and responds with the ID of the task. After the task has started, you can use DescribeExportTasks to get the status of the export task. Each account can only have one active ( RUNNING or PENDING ) export task at a time. To cancel an export task, use CancelExportTask.

You can export logs from multiple log groups or multiple time ranges to the same S3 bucket. To separate log data for each export task, specify a prefix to be used as the Amazon S3 key prefix for all exported objects.

Note

Time-based sorting on chunks of log data inside an exported file is not guaranteed. You can sort the exported log field data by using Linux utilities.

See also: AWS API Documentation

Request Syntax

response = client.create_export_task(
    taskName='string',
    logGroupName='string',
    logStreamNamePrefix='string',
    fromTime=123,
    to=123,
    destination='string',
    destinationPrefix='string'
)
Parameters
  • taskName (string) -- The name of the export task.
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • logStreamNamePrefix (string) -- Export only log streams that match the provided prefix. If you don't specify a value, no prefix filter is applied.
  • fromTime (integer) --

    [REQUIRED]

    The start time of the range for the request, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp earlier than this time are not exported.

  • to (integer) --

    [REQUIRED]

    The end time of the range for the request, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp later than this time are not exported.

    You must specify a time that is not earlier than when this log group was created.

  • destination (string) --

    [REQUIRED]

    The name of S3 bucket for the exported log data. The bucket must be in the same Amazon Web Services Region.

  • destinationPrefix (string) -- The prefix used as the start of the key for every object exported. If you don't specify a value, the default is exportedlogs .
Return type

dict

Returns

Response Syntax

{
    'taskId': 'string'
}

Response Structure

  • (dict) --

    • taskId (string) --

      The ID of the export task.

Exceptions

create_log_group(**kwargs)

Creates a log group with the specified name. You can create up to 20,000 log groups per account.

You must use the following guidelines when naming a log group:

  • Log group names must be unique within a Region for an Amazon Web Services account.
  • Log group names can be between 1 and 512 characters long.
  • Log group names consist of the following characters: a-z, A-Z, 0-9, '_' (underscore), '-' (hyphen), '/' (forward slash), '.' (period), and '#' (number sign)

When you create a log group, by default the log events in the log group do not expire. To set a retention policy so that events expire and are deleted after a specified time, use PutRetentionPolicy.

If you associate an KMS key with the log group, ingested data is encrypted using the KMS key. This association is stored as long as the data encrypted with the KMS key is still within CloudWatch Logs. This enables CloudWatch Logs to decrypt this data whenever it is requested.

If you attempt to associate a KMS key with the log group but the KMS keydoes not exist or the KMS key is disabled, you receive an InvalidParameterException error.

Warning

CloudWatch Logs supports only symmetric KMS keys. Do not associate an asymmetric KMS key with your log group. For more information, see Using Symmetric and Asymmetric Keys.

See also: AWS API Documentation

Request Syntax

response = client.create_log_group(
    logGroupName='string',
    kmsKeyId='string',
    tags={
        'string': 'string'
    }
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • kmsKeyId (string) -- The Amazon Resource Name (ARN) of the KMS key to use when encrypting log data. For more information, see Amazon Resource Names.
  • tags (dict) --

    The key-value pairs to use for the tags.

    You can grant users access to certain log groups while preventing them from accessing other log groups. To do so, tag your groups and use IAM policies that refer to those tags. To assign tags when you create a log group, you must have either the logs:TagResource or logs:TagLogGroup permission. For more information about tagging, see Tagging Amazon Web Services resources. For more information about using tags to control access, see Controlling access to Amazon Web Services resources using tags.

    • (string) --
      • (string) --
Returns

None

Exceptions

create_log_stream(**kwargs)

Creates a log stream for the specified log group. A log stream is a sequence of log events that originate from a single source, such as an application instance or a resource that is being monitored.

There is no limit on the number of log streams that you can create for a log group. There is a limit of 50 TPS on CreateLogStream operations, after which transactions are throttled.

You must use the following guidelines when naming a log stream:

  • Log stream names must be unique within the log group.
  • Log stream names can be between 1 and 512 characters long.
  • Don't use ':' (colon) or '*' (asterisk) characters.

See also: AWS API Documentation

Request Syntax

response = client.create_log_stream(
    logGroupName='string',
    logStreamName='string'
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • logStreamName (string) --

    [REQUIRED]

    The name of the log stream.

Returns

None

Exceptions

delete_data_protection_policy(**kwargs)

Deletes the data protection policy from the specified log group.

For more information about data protection policies, see PutDataProtectionPolicy.

See also: AWS API Documentation

Request Syntax

response = client.delete_data_protection_policy(
    logGroupIdentifier='string'
)
Parameters
logGroupIdentifier (string) --

[REQUIRED]

The name or ARN of the log group that you want to delete the data protection policy for.

Returns
None

Exceptions

delete_destination(**kwargs)

Deletes the specified destination, and eventually disables all the subscription filters that publish to it. This operation does not delete the physical resource encapsulated by the destination.

See also: AWS API Documentation

Request Syntax

response = client.delete_destination(
    destinationName='string'
)
Parameters
destinationName (string) --

[REQUIRED]

The name of the destination.

Returns
None

Exceptions

delete_log_group(**kwargs)

Deletes the specified log group and permanently deletes all the archived log events associated with the log group.

See also: AWS API Documentation

Request Syntax

response = client.delete_log_group(
    logGroupName='string'
)
Parameters
logGroupName (string) --

[REQUIRED]

The name of the log group.

Returns
None

Exceptions

delete_log_stream(**kwargs)

Deletes the specified log stream and permanently deletes all the archived log events associated with the log stream.

See also: AWS API Documentation

Request Syntax

response = client.delete_log_stream(
    logGroupName='string',
    logStreamName='string'
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • logStreamName (string) --

    [REQUIRED]

    The name of the log stream.

Returns

None

Exceptions

delete_metric_filter(**kwargs)

Deletes the specified metric filter.

See also: AWS API Documentation

Request Syntax

response = client.delete_metric_filter(
    logGroupName='string',
    filterName='string'
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • filterName (string) --

    [REQUIRED]

    The name of the metric filter.

Returns

None

Exceptions

delete_query_definition(**kwargs)

Deletes a saved CloudWatch Logs Insights query definition. A query definition contains details about a saved CloudWatch Logs Insights query.

Each DeleteQueryDefinition operation can delete one query definition.

You must have the logs:DeleteQueryDefinition permission to be able to perform this operation.

See also: AWS API Documentation

Request Syntax

response = client.delete_query_definition(
    queryDefinitionId='string'
)
Parameters
queryDefinitionId (string) --

[REQUIRED]

The ID of the query definition that you want to delete. You can use DescribeQueryDefinitions to retrieve the IDs of your saved query definitions.

Return type
dict
Returns
Response Syntax
{
    'success': True|False
}

Response Structure

  • (dict) --
    • success (boolean) --

      A value of TRUE indicates that the operation succeeded. FALSE indicates that the operation failed.

Exceptions

delete_resource_policy(**kwargs)

Deletes a resource policy from this account. This revokes the access of the identities in that policy to put log events to this account.

See also: AWS API Documentation

Request Syntax

response = client.delete_resource_policy(
    policyName='string'
)
Parameters
policyName (string) -- The name of the policy to be revoked. This parameter is required.
Returns
None

Exceptions

delete_retention_policy(**kwargs)

Deletes the specified retention policy.

Log events do not expire if they belong to log groups without a retention policy.

See also: AWS API Documentation

Request Syntax

response = client.delete_retention_policy(
    logGroupName='string'
)
Parameters
logGroupName (string) --

[REQUIRED]

The name of the log group.

Returns
None

Exceptions

delete_subscription_filter(**kwargs)

Deletes the specified subscription filter.

See also: AWS API Documentation

Request Syntax

response = client.delete_subscription_filter(
    logGroupName='string',
    filterName='string'
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • filterName (string) --

    [REQUIRED]

    The name of the subscription filter.

Returns

None

Exceptions

describe_destinations(**kwargs)

Lists all your destinations. The results are ASCII-sorted by destination name.

See also: AWS API Documentation

Request Syntax

response = client.describe_destinations(
    DestinationNamePrefix='string',
    nextToken='string',
    limit=123
)
Parameters
  • DestinationNamePrefix (string) -- The prefix to match. If you don't specify a value, no prefix filter is applied.
  • nextToken (string) -- The token for the next set of items to return. (You received this token from a previous call.)
  • limit (integer) -- The maximum number of items returned. If you don't specify a value, the default maximum value of 50 items is used.
Return type

dict

Returns

Response Syntax

{
    'destinations': [
        {
            'destinationName': 'string',
            'targetArn': 'string',
            'roleArn': 'string',
            'accessPolicy': 'string',
            'arn': 'string',
            'creationTime': 123
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • destinations (list) --

      The destinations.

      • (dict) --

        Represents a cross-account destination that receives subscription log events.

        • destinationName (string) --

          The name of the destination.

        • targetArn (string) --

          The Amazon Resource Name (ARN) of the physical target where the log events are delivered (for example, a Kinesis stream).

        • roleArn (string) --

          A role for impersonation, used when delivering log events to the target.

        • accessPolicy (string) --

          An IAM policy document that governs which Amazon Web Services accounts can create subscription filters against this destination.

        • arn (string) --

          The ARN of this destination.

        • creationTime (integer) --

          The creation time of the destination, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC.

    • nextToken (string) --

      The token for the next set of items to return. The token expires after 24 hours.

Exceptions

describe_export_tasks(**kwargs)

Lists the specified export tasks. You can list all your export tasks or filter the results based on task ID or task status.

See also: AWS API Documentation

Request Syntax

response = client.describe_export_tasks(
    taskId='string',
    statusCode='CANCELLED'|'COMPLETED'|'FAILED'|'PENDING'|'PENDING_CANCEL'|'RUNNING',
    nextToken='string',
    limit=123
)
Parameters
  • taskId (string) -- The ID of the export task. Specifying a task ID filters the results to one or zero export tasks.
  • statusCode (string) -- The status code of the export task. Specifying a status code filters the results to zero or more export tasks.
  • nextToken (string) -- The token for the next set of items to return. (You received this token from a previous call.)
  • limit (integer) -- The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
Return type

dict

Returns

Response Syntax

{
    'exportTasks': [
        {
            'taskId': 'string',
            'taskName': 'string',
            'logGroupName': 'string',
            'from': 123,
            'to': 123,
            'destination': 'string',
            'destinationPrefix': 'string',
            'status': {
                'code': 'CANCELLED'|'COMPLETED'|'FAILED'|'PENDING'|'PENDING_CANCEL'|'RUNNING',
                'message': 'string'
            },
            'executionInfo': {
                'creationTime': 123,
                'completionTime': 123
            }
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • exportTasks (list) --

      The export tasks.

      • (dict) --

        Represents an export task.

        • taskId (string) --

          The ID of the export task.

        • taskName (string) --

          The name of the export task.

        • logGroupName (string) --

          The name of the log group from which logs data was exported.

        • from (integer) --

          The start time, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp before this time are not exported.

        • to (integer) --

          The end time, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp later than this time are not exported.

        • destination (string) --

          The name of the S3 bucket to which the log data was exported.

        • destinationPrefix (string) --

          The prefix that was used as the start of Amazon S3 key for every object exported.

        • status (dict) --

          The status of the export task.

          • code (string) --

            The status code of the export task.

          • message (string) --

            The status message related to the status code.

        • executionInfo (dict) --

          Execution information about the export task.

          • creationTime (integer) --

            The creation time of the export task, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

          • completionTime (integer) --

            The completion time of the export task, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

    • nextToken (string) --

      The token for the next set of items to return. The token expires after 24 hours.

Exceptions

describe_log_groups(**kwargs)

Lists the specified log groups. You can list all your log groups or filter the results by prefix. The results are ASCII-sorted by log group name.

CloudWatch Logs doesn’t support IAM policies that control access to the DescribeLogGroups action by using the aws:ResourceTag/key-name condition key. Other CloudWatch Logs actions do support the use of the aws:ResourceTag/key-name condition key to control access. For more information about using tags to control access, see Controlling access to Amazon Web Services resources using tags.

If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account and view data from the linked source accounts. For more information, see CloudWatch cross-account observability.

See also: AWS API Documentation

Request Syntax

response = client.describe_log_groups(
    accountIdentifiers=[
        'string',
    ],
    logGroupNamePrefix='string',
    logGroupNamePattern='string',
    nextToken='string',
    limit=123,
    includeLinkedAccounts=True|False
)
Parameters
  • accountIdentifiers (list) --

    When includeLinkedAccounts is set to True , use this parameter to specify the list of accounts to search. You can specify as many as 20 account IDs in the array.

    • (string) --
  • logGroupNamePrefix (string) --

    The prefix to match.

    Note

    logGroupNamePrefix and logGroupNamePattern are mutually exclusive. Only one of these parameters can be passed.

  • logGroupNamePattern (string) --

    If you specify a string for this parameter, the operation returns only log groups that have names that match the string based on a case-sensitive substring search. For example, if you specify Foo , log groups named FooBar , aws/Foo , and GroupFoo would match, but foo , F/o/o and Froo would not match.

    Note

    logGroupNamePattern and logGroupNamePrefix are mutually exclusive. Only one of these parameters can be passed.

  • nextToken (string) -- The token for the next set of items to return. (You received this token from a previous call.)
  • limit (integer) -- The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
  • includeLinkedAccounts (boolean) --

    If you are using a monitoring account, set this to True to have the operation return log groups in the accounts listed in accountIdentifiers .

    If this parameter is set to true and accountIdentifiers contains a null value, the operation returns all log groups in the monitoring account and all log groups in all source accounts that are linked to the monitoring account.

    Note

    If you specify includeLinkedAccounts in your request, then metricFilterCount , retentionInDays , and storedBytes are not included in the response.

Return type

dict

Returns

Response Syntax

{
    'logGroups': [
        {
            'logGroupName': 'string',
            'creationTime': 123,
            'retentionInDays': 123,
            'metricFilterCount': 123,
            'arn': 'string',
            'storedBytes': 123,
            'kmsKeyId': 'string',
            'dataProtectionStatus': 'ACTIVATED'|'DELETED'|'ARCHIVED'|'DISABLED'
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • logGroups (list) --

      The log groups.

      If the retentionInDays value is not included for a log group, then that log group's events do not expire.

      • (dict) --

        Represents a log group.

        • logGroupName (string) --

          The name of the log group.

        • creationTime (integer) --

          The creation time of the log group, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC.

        • retentionInDays (integer) --

          The number of days to retain the log events in the specified log group. Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 2192, 2557, 2922, 3288, and 3653.

          To set a log group so that its log events do not expire, use DeleteRetentionPolicy.

        • metricFilterCount (integer) --

          The number of metric filters.

        • arn (string) --

          The Amazon Resource Name (ARN) of the log group.

        • storedBytes (integer) --

          The number of bytes stored.

        • kmsKeyId (string) --

          The Amazon Resource Name (ARN) of the KMS key to use when encrypting log data.

        • dataProtectionStatus (string) --

          Displays whether this log group has a protection policy, or whether it had one in the past. For more information, see PutDataProtectionPolicy.

    • nextToken (string) --

      The token for the next set of items to return. The token expires after 24 hours.

Exceptions

describe_log_streams(**kwargs)

Lists the log streams for the specified log group. You can list all the log streams or filter the results by prefix. You can also control how the results are ordered.

This operation has a limit of five transactions per second, after which transactions are throttled.

If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account and view data from the linked source accounts. For more information, see CloudWatch cross-account observability.

See also: AWS API Documentation

Request Syntax

response = client.describe_log_streams(
    logGroupName='string',
    logGroupIdentifier='string',
    logStreamNamePrefix='string',
    orderBy='LogStreamName'|'LastEventTime',
    descending=True|False,
    nextToken='string',
    limit=123
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

    Note

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logGroupIdentifier (string) --

    Specify either the name or ARN of the log group to view. If the log group is in a source account and you are using a monitoring account, you must use the log group ARN.

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logStreamNamePrefix (string) --

    The prefix to match.

    If orderBy is LastEventTime , you cannot specify this parameter.

  • orderBy (string) --

    If the value is LogStreamName , the results are ordered by log stream name. If the value is LastEventTime , the results are ordered by the event time. The default value is LogStreamName .

    If you order the results by event time, you cannot specify the logStreamNamePrefix parameter.

    lastEventTimestamp represents the time of the most recent log event in the log stream in CloudWatch Logs. This number is expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . lastEventTimestamp updates on an eventual consistency basis. It typically updates in less than an hour from ingestion, but in rare situations might take longer.
  • descending (boolean) -- If the value is true, results are returned in descending order. If the value is to false, results are returned in ascending order. The default value is false.
  • nextToken (string) -- The token for the next set of items to return. (You received this token from a previous call.)
  • limit (integer) -- The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
Return type

dict

Returns

Response Syntax

{
    'logStreams': [
        {
            'logStreamName': 'string',
            'creationTime': 123,
            'firstEventTimestamp': 123,
            'lastEventTimestamp': 123,
            'lastIngestionTime': 123,
            'uploadSequenceToken': 'string',
            'arn': 'string',
            'storedBytes': 123
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • logStreams (list) --

      The log streams.

      • (dict) --

        Represents a log stream, which is a sequence of log events from a single emitter of logs.

        • logStreamName (string) --

          The name of the log stream.

        • creationTime (integer) --

          The creation time of the stream, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • firstEventTimestamp (integer) --

          The time of the first event, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • lastEventTimestamp (integer) --

          The time of the most recent log event in the log stream in CloudWatch Logs. This number is expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . The lastEventTime value updates on an eventual consistency basis. It typically updates in less than an hour from ingestion, but in rare situations might take longer.

        • lastIngestionTime (integer) --

          The ingestion time, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • uploadSequenceToken (string) --

          The sequence token.

        • arn (string) --

          The Amazon Resource Name (ARN) of the log stream.

        • storedBytes (integer) --

          The number of bytes stored.

          Important: As of June 17, 2019, this parameter is no longer supported for log streams, and is always reported as zero. This change applies only to log streams. The storedBytes parameter for log groups is not affected.

    • nextToken (string) --

      The token for the next set of items to return. The token expires after 24 hours.

Exceptions

describe_metric_filters(**kwargs)

Lists the specified metric filters. You can list all of the metric filters or filter the results by log name, prefix, metric name, or metric namespace. The results are ASCII-sorted by filter name.

See also: AWS API Documentation

Request Syntax

response = client.describe_metric_filters(
    logGroupName='string',
    filterNamePrefix='string',
    nextToken='string',
    limit=123,
    metricName='string',
    metricNamespace='string'
)
Parameters
  • logGroupName (string) -- The name of the log group.
  • filterNamePrefix (string) -- The prefix to match. CloudWatch Logs uses the value that you set here only if you also include the logGroupName parameter in your request.
  • nextToken (string) -- The token for the next set of items to return. (You received this token from a previous call.)
  • limit (integer) -- The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
  • metricName (string) -- Filters results to include only those with the specified metric name. If you include this parameter in your request, you must also include the metricNamespace parameter.
  • metricNamespace (string) -- Filters results to include only those in the specified namespace. If you include this parameter in your request, you must also include the metricName parameter.
Return type

dict

Returns

Response Syntax

{
    'metricFilters': [
        {
            'filterName': 'string',
            'filterPattern': 'string',
            'metricTransformations': [
                {
                    'metricName': 'string',
                    'metricNamespace': 'string',
                    'metricValue': 'string',
                    'defaultValue': 123.0,
                    'dimensions': {
                        'string': 'string'
                    },
                    'unit': 'Seconds'|'Microseconds'|'Milliseconds'|'Bytes'|'Kilobytes'|'Megabytes'|'Gigabytes'|'Terabytes'|'Bits'|'Kilobits'|'Megabits'|'Gigabits'|'Terabits'|'Percent'|'Count'|'Bytes/Second'|'Kilobytes/Second'|'Megabytes/Second'|'Gigabytes/Second'|'Terabytes/Second'|'Bits/Second'|'Kilobits/Second'|'Megabits/Second'|'Gigabits/Second'|'Terabits/Second'|'Count/Second'|'None'
                },
            ],
            'creationTime': 123,
            'logGroupName': 'string'
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • metricFilters (list) --

      The metric filters.

      • (dict) --

        Metric filters express how CloudWatch Logs would extract metric observations from ingested log events and transform them into metric data in a CloudWatch metric.

        • filterName (string) --

          The name of the metric filter.

        • filterPattern (string) --

          A symbolic description of how CloudWatch Logs should interpret the data in each log event. For example, a log event can contain timestamps, IP addresses, strings, and so on. You use the filter pattern to specify what to look for in the log event message.

        • metricTransformations (list) --

          The metric transformations.

          • (dict) --

            Indicates how to transform ingested log events to metric data in a CloudWatch metric.

            • metricName (string) --

              The name of the CloudWatch metric.

            • metricNamespace (string) --

              A custom namespace to contain your metric in CloudWatch. Use namespaces to group together metrics that are similar. For more information, see Namespaces.

            • metricValue (string) --

              The value to publish to the CloudWatch metric when a filter pattern matches a log event.

            • defaultValue (float) --

              (Optional) The value to emit when a filter pattern does not match a log event. This value can be null.

            • dimensions (dict) --

              The fields to use as dimensions for the metric. One metric filter can include as many as three dimensions.

              Warning

              Metrics extracted from log events are charged as custom metrics. To prevent unexpected high charges, do not specify high-cardinality fields such as IPAddress or requestID as dimensions. Each different value found for a dimension is treated as a separate metric and accrues charges as a separate custom metric.

              CloudWatch Logs disables a metric filter if it generates 1000 different name/value pairs for your specified dimensions within a certain amount of time. This helps to prevent accidental high charges.

              You can also set up a billing alarm to alert you if your charges are higher than expected. For more information, see Creating a Billing Alarm to Monitor Your Estimated Amazon Web Services Charges.

              • (string) --
                • (string) --
            • unit (string) --

              The unit to assign to the metric. If you omit this, the unit is set as None .

        • creationTime (integer) --

          The creation time of the metric filter, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • logGroupName (string) --

          The name of the log group.

    • nextToken (string) --

      The token for the next set of items to return. The token expires after 24 hours.

Exceptions

describe_queries(**kwargs)

Returns a list of CloudWatch Logs Insights queries that are scheduled, running, or have been run recently in this account. You can request all queries or limit it to queries of a specific log group or queries with a certain status.

See also: AWS API Documentation

Request Syntax

response = client.describe_queries(
    logGroupName='string',
    status='Scheduled'|'Running'|'Complete'|'Failed'|'Cancelled'|'Timeout'|'Unknown',
    maxResults=123,
    nextToken='string'
)
Parameters
  • logGroupName (string) -- Limits the returned queries to only those for the specified log group.
  • status (string) -- Limits the returned queries to only those that have the specified status. Valid values are Cancelled , Complete , Failed , Running , and Scheduled .
  • maxResults (integer) -- Limits the number of returned queries to the specified number.
  • nextToken (string) -- The token for the next set of items to return. The token expires after 24 hours.
Return type

dict

Returns

Response Syntax

{
    'queries': [
        {
            'queryId': 'string',
            'queryString': 'string',
            'status': 'Scheduled'|'Running'|'Complete'|'Failed'|'Cancelled'|'Timeout'|'Unknown',
            'createTime': 123,
            'logGroupName': 'string'
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • queries (list) --

      The list of queries that match the request.

      • (dict) --

        Information about one CloudWatch Logs Insights query that matches the request in a DescribeQueries operation.

        • queryId (string) --

          The unique ID number of this query.

        • queryString (string) --

          The query string used in this query.

        • status (string) --

          The status of this query. Possible values are Cancelled , Complete , Failed , Running , Scheduled , and Unknown .

        • createTime (integer) --

          The date and time that this query was created.

        • logGroupName (string) --

          The name of the log group scanned by this query.

    • nextToken (string) --

      The token for the next set of items to return. The token expires after 24 hours.

Exceptions

describe_query_definitions(**kwargs)

This operation returns a paginated list of your saved CloudWatch Logs Insights query definitions.

You can use the queryDefinitionNamePrefix parameter to limit the results to only the query definitions that have names that start with a certain string.

See also: AWS API Documentation

Request Syntax

response = client.describe_query_definitions(
    queryDefinitionNamePrefix='string',
    maxResults=123,
    nextToken='string'
)
Parameters
  • queryDefinitionNamePrefix (string) -- Use this parameter to filter your results to only the query definitions that have names that start with the prefix you specify.
  • maxResults (integer) -- Limits the number of returned query definitions to the specified number.
  • nextToken (string) -- The token for the next set of items to return. The token expires after 24 hours.
Return type

dict

Returns

Response Syntax

{
    'queryDefinitions': [
        {
            'queryDefinitionId': 'string',
            'name': 'string',
            'queryString': 'string',
            'lastModified': 123,
            'logGroupNames': [
                'string',
            ]
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • queryDefinitions (list) --

      The list of query definitions that match your request.

      • (dict) --

        This structure contains details about a saved CloudWatch Logs Insights query definition.

        • queryDefinitionId (string) --

          The unique ID of the query definition.

        • name (string) --

          The name of the query definition.

        • queryString (string) --

          The query string to use for this definition. For more information, see CloudWatch Logs Insights Query Syntax.

        • lastModified (integer) --

          The date that the query definition was most recently modified.

        • logGroupNames (list) --

          If this query definition contains a list of log groups that it is limited to, that list appears here.

          • (string) --
    • nextToken (string) --

      The token for the next set of items to return. The token expires after 24 hours.

Exceptions

describe_resource_policies(**kwargs)

Lists the resource policies in this account.

See also: AWS API Documentation

Request Syntax

response = client.describe_resource_policies(
    nextToken='string',
    limit=123
)
Parameters
  • nextToken (string) -- The token for the next set of items to return. The token expires after 24 hours.
  • limit (integer) -- The maximum number of resource policies to be displayed with one call of this API.
Return type

dict

Returns

Response Syntax

{
    'resourcePolicies': [
        {
            'policyName': 'string',
            'policyDocument': 'string',
            'lastUpdatedTime': 123
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • resourcePolicies (list) --

      The resource policies that exist in this account.

      • (dict) --

        A policy enabling one or more entities to put logs to a log group in this account.

        • policyName (string) --

          The name of the resource policy.

        • policyDocument (string) --

          The details of the policy.

        • lastUpdatedTime (integer) --

          Timestamp showing when this policy was last updated, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

    • nextToken (string) --

      The token for the next set of items to return. The token expires after 24 hours.

Exceptions

describe_subscription_filters(**kwargs)

Lists the subscription filters for the specified log group. You can list all the subscription filters or filter the results by prefix. The results are ASCII-sorted by filter name.

See also: AWS API Documentation

Request Syntax

response = client.describe_subscription_filters(
    logGroupName='string',
    filterNamePrefix='string',
    nextToken='string',
    limit=123
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • filterNamePrefix (string) -- The prefix to match. If you don't specify a value, no prefix filter is applied.
  • nextToken (string) -- The token for the next set of items to return. (You received this token from a previous call.)
  • limit (integer) -- The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
Return type

dict

Returns

Response Syntax

{
    'subscriptionFilters': [
        {
            'filterName': 'string',
            'logGroupName': 'string',
            'filterPattern': 'string',
            'destinationArn': 'string',
            'roleArn': 'string',
            'distribution': 'Random'|'ByLogStream',
            'creationTime': 123
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • subscriptionFilters (list) --

      The subscription filters.

      • (dict) --

        Represents a subscription filter.

        • filterName (string) --

          The name of the subscription filter.

        • logGroupName (string) --

          The name of the log group.

        • filterPattern (string) --

          A symbolic description of how CloudWatch Logs should interpret the data in each log event. For example, a log event can contain timestamps, IP addresses, strings, and so on. You use the filter pattern to specify what to look for in the log event message.

        • destinationArn (string) --

          The Amazon Resource Name (ARN) of the destination.

        • roleArn (string) --

        • distribution (string) --

          The method used to distribute log data to the destination, which can be either random or grouped by log stream.

        • creationTime (integer) --

          The creation time of the subscription filter, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

    • nextToken (string) --

      The token for the next set of items to return. The token expires after 24 hours.

Exceptions

disassociate_kms_key(**kwargs)

Disassociates the associated KMS key from the specified log group.

After the KMS key is disassociated from the log group, CloudWatch Logs stops encrypting newly ingested data for the log group. All previously ingested data remains encrypted, and CloudWatch Logs requires permissions for the KMS key whenever the encrypted data is requested.

Note that it can take up to 5 minutes for this operation to take effect.

See also: AWS API Documentation

Request Syntax

response = client.disassociate_kms_key(
    logGroupName='string'
)
Parameters
logGroupName (string) --

[REQUIRED]

The name of the log group.

Returns
None

Exceptions

filter_log_events(**kwargs)

Lists log events from the specified log group. You can list all the log events or filter the results using a filter pattern, a time range, and the name of the log stream.

You must have the logs;FilterLogEvents permission to perform this operation.

By default, this operation returns as many log events as can fit in 1 MB (up to 10,000 log events) or all the events found within the specified time range. If the results include a token, that means there are more log events available. You can get additional results by specifying the token in a subsequent call. This operation can return empty results while there are more log events available through the token.

The returned log events are sorted by event timestamp, the timestamp when the event was ingested by CloudWatch Logs, and the ID of the PutLogEvents request.

If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account and view data from the linked source accounts. For more information, see CloudWatch cross-account observability.

See also: AWS API Documentation

Request Syntax

response = client.filter_log_events(
    logGroupName='string',
    logGroupIdentifier='string',
    logStreamNames=[
        'string',
    ],
    logStreamNamePrefix='string',
    startTime=123,
    endTime=123,
    filterPattern='string',
    nextToken='string',
    limit=123,
    interleaved=True|False,
    unmask=True|False
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group to search.

    Note

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logGroupIdentifier (string) --

    Specify either the name or ARN of the log group to view log events from. If the log group is in a source account and you are using a monitoring account, you must use the log group ARN.

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logStreamNames (list) --

    Filters the results to only logs from the log streams in this list.

    If you specify a value for both logStreamNamePrefix and logStreamNames , the action returns an InvalidParameterException error.

    • (string) --
  • logStreamNamePrefix (string) --

    Filters the results to include only events from log streams that have names starting with this prefix.

    If you specify a value for both logStreamNamePrefix and logStreamNames , but the value for logStreamNamePrefix does not match any log stream names specified in logStreamNames , the action returns an InvalidParameterException error.

  • startTime (integer) -- The start of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp before this time are not returned.
  • endTime (integer) -- The end of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp later than this time are not returned.
  • filterPattern (string) --

    The filter pattern to use. For more information, see Filter and Pattern Syntax.

    If not provided, all the events are matched.

  • nextToken (string) -- The token for the next set of events to return. (You received this token from a previous call.)
  • limit (integer) -- The maximum number of events to return. The default is 10,000 events.
  • interleaved (boolean) --

    If the value is true, the operation attempts to provide responses that contain events from multiple log streams within the log group, interleaved in a single response. If the value is false, all the matched log events in the first log stream are searched first, then those in the next log stream, and so on.

    Important As of June 17, 2019, this parameter is ignored and the value is assumed to be true. The response from this operation always interleaves events from multiple log streams within a log group.
  • unmask (boolean) --

    Specify true to display the log event fields with all sensitive data unmasked and visible. The default is false .

    To use this operation with this parameter, you must be signed into an account with the logs:Unmask permission.

Return type

dict

Returns

Response Syntax

{
    'events': [
        {
            'logStreamName': 'string',
            'timestamp': 123,
            'message': 'string',
            'ingestionTime': 123,
            'eventId': 'string'
        },
    ],
    'searchedLogStreams': [
        {
            'logStreamName': 'string',
            'searchedCompletely': True|False
        },
    ],
    'nextToken': 'string'
}

Response Structure

  • (dict) --

    • events (list) --

      The matched events.

      • (dict) --

        Represents a matched event.

        • logStreamName (string) --

          The name of the log stream to which this event belongs.

        • timestamp (integer) --

          The time the event occurred, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • message (string) --

          The data contained in the log event.

        • ingestionTime (integer) --

          The time the event was ingested, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • eventId (string) --

          The ID of the event.

    • searchedLogStreams (list) --

      Important As of May 15, 2020, this parameter is no longer supported. This parameter returns an empty list.

      Indicates which log streams have been searched and whether each has been searched completely.

      • (dict) --

        Represents the search status of a log stream.

        • logStreamName (string) --

          The name of the log stream.

        • searchedCompletely (boolean) --

          Indicates whether all the events in this log stream were searched.

    • nextToken (string) --

      The token to use when requesting the next set of items. The token expires after 24 hours.

Exceptions

get_data_protection_policy(**kwargs)

Returns information about a log group data protection policy.

See also: AWS API Documentation

Request Syntax

response = client.get_data_protection_policy(
    logGroupIdentifier='string'
)
Parameters
logGroupIdentifier (string) --

[REQUIRED]

The name or ARN of the log group that contains the data protection policy that you want to see.

Return type
dict
Returns
Response Syntax
{
    'logGroupIdentifier': 'string',
    'policyDocument': 'string',
    'lastUpdatedTime': 123
}

Response Structure

  • (dict) --
    • logGroupIdentifier (string) --

      The log group name or ARN that you specified in your request.

    • policyDocument (string) --

      The data protection policy document for this log group.

    • lastUpdatedTime (integer) --

      The date and time that this policy was most recently updated.

Exceptions

get_log_events(**kwargs)

Lists log events from the specified log stream. You can list all of the log events or filter using a time range.

By default, this operation returns as many log events as can fit in a response size of 1MB (up to 10,000 log events). You can get additional log events by specifying one of the tokens in a subsequent call. This operation can return empty results while there are more log events available through the token.

If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account and view data from the linked source accounts. For more information, see CloudWatch cross-account observability.

See also: AWS API Documentation

Request Syntax

response = client.get_log_events(
    logGroupName='string',
    logGroupIdentifier='string',
    logStreamName='string',
    startTime=123,
    endTime=123,
    nextToken='string',
    limit=123,
    startFromHead=True|False,
    unmask=True|False
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

    Note

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logGroupIdentifier (string) --

    Specify either the name or ARN of the log group to view events from. If the log group is in a source account and you are using a monitoring account, you must use the log group ARN.

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logStreamName (string) --

    [REQUIRED]

    The name of the log stream.

  • startTime (integer) -- The start of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp equal to this time or later than this time are included. Events with a timestamp earlier than this time are not included.
  • endTime (integer) -- The end of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp equal to or later than this time are not included.
  • nextToken (string) -- The token for the next set of items to return. (You received this token from a previous call.)
  • limit (integer) -- The maximum number of log events returned. If you don't specify a limit, the default is as many log events as can fit in a response size of 1 MB (up to 10,000 log events).
  • startFromHead (boolean) --

    If the value is true, the earliest log events are returned first. If the value is false, the latest log events are returned first. The default value is false.

    If you are using a previous nextForwardToken value as the nextToken in this operation, you must specify true for startFromHead .

  • unmask (boolean) --

    Specify true to display the log event fields with all sensitive data unmasked and visible. The default is false .

    To use this operation with this parameter, you must be signed into an account with the logs:Unmask permission.

Return type

dict

Returns

Response Syntax

{
    'events': [
        {
            'timestamp': 123,
            'message': 'string',
            'ingestionTime': 123
        },
    ],
    'nextForwardToken': 'string',
    'nextBackwardToken': 'string'
}

Response Structure

  • (dict) --

    • events (list) --

      The events.

      • (dict) --

        Represents a log event.

        • timestamp (integer) --

          The time the event occurred, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • message (string) --

          The data contained in the log event.

        • ingestionTime (integer) --

          The time the event was ingested, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

    • nextForwardToken (string) --

      The token for the next set of items in the forward direction. The token expires after 24 hours. If you have reached the end of the stream, it returns the same token you passed in.

    • nextBackwardToken (string) --

      The token for the next set of items in the backward direction. The token expires after 24 hours. This token is not null. If you have reached the end of the stream, it returns the same token you passed in.

Exceptions

get_log_group_fields(**kwargs)

Returns a list of the fields that are included in log events in the specified log group. Includes the percentage of log events that contain each field. The search is limited to a time period that you specify.

In the results, fields that start with @ are fields generated by CloudWatch Logs. For example, @timestamp is the timestamp of each log event. For more information about the fields that are generated by CloudWatch logs, see Supported Logs and Discovered Fields.

The response results are sorted by the frequency percentage, starting with the highest percentage.

If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account and view data from the linked source accounts. For more information, see CloudWatch cross-account observability.

See also: AWS API Documentation

Request Syntax

response = client.get_log_group_fields(
    logGroupName='string',
    time=123,
    logGroupIdentifier='string'
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group to search.

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • time (integer) --

    The time to set as the center of the query. If you specify time , the 15 minutes before this time are queries. If you omit time , the 8 minutes before and 8 minutes after this time are searched.

    The time value is specified as epoch time, which is the number of seconds since January 1, 1970, 00:00:00 UTC .

  • logGroupIdentifier (string) --

    Specify either the name or ARN of the log group to view. If the log group is in a source account and you are using a monitoring account, you must specify the ARN.

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

Return type

dict

Returns

Response Syntax

{
    'logGroupFields': [
        {
            'name': 'string',
            'percent': 123
        },
    ]
}

Response Structure

  • (dict) --

    • logGroupFields (list) --

      The array of fields found in the query. Each object in the array contains the name of the field, along with the percentage of time it appeared in the log events that were queried.

      • (dict) --

        The fields contained in log events found by a GetLogGroupFields operation, along with the percentage of queried log events in which each field appears.

        • name (string) --

          The name of a log field.

        • percent (integer) --

          The percentage of log events queried that contained the field.

Exceptions

get_log_record(**kwargs)

Retrieves all of the fields and values of a single log event. All fields are retrieved, even if the original query that produced the logRecordPointer retrieved only a subset of fields. Fields are returned as field name/field value pairs.

The full unparsed log event is returned within @message .

See also: AWS API Documentation

Request Syntax

response = client.get_log_record(
    logRecordPointer='string',
    unmask=True|False
)
Parameters
  • logRecordPointer (string) --

    [REQUIRED]

    The pointer corresponding to the log event record you want to retrieve. You get this from the response of a GetQueryResults operation. In that response, the value of the @ptr field for a log event is the value to use as logRecordPointer to retrieve that complete log event record.

  • unmask (boolean) --

    Specify true to display the log event fields with all sensitive data unmasked and visible. The default is false .

    To use this operation with this parameter, you must be signed into an account with the logs:Unmask permission.

Return type

dict

Returns

Response Syntax

{
    'logRecord': {
        'string': 'string'
    }
}

Response Structure

  • (dict) --

    • logRecord (dict) --

      The requested log event, as a JSON string.

      • (string) --
        • (string) --

Exceptions

get_paginator(operation_name)

Create a paginator for an operation.

Parameters
operation_name (string) -- The operation name. This is the same name as the method name on the client. For example, if the method name is create_foo, and you'd normally invoke the operation as client.create_foo(**kwargs), if the create_foo operation can be paginated, you can use the call client.get_paginator("create_foo").
Raises OperationNotPageableError
Raised if the operation is not pageable. You can use the client.can_paginate method to check if an operation is pageable.
Return type
L{botocore.paginate.Paginator}
Returns
A paginator object.
get_query_results(**kwargs)

Returns the results from the specified query.

Only the fields requested in the query are returned, along with a @ptr field, which is the identifier for the log record. You can use the value of @ptr in a GetLogRecord operation to get the full log record.

GetQueryResults does not start running a query. To run a query, use StartQuery.

If the value of the Status field in the output is Running , this operation returns only partial results. If you see a value of Scheduled or Running for the status, you can retry the operation later to see the final results.

If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account to start queries in linked source accounts. For more information, see CloudWatch cross-account observability.

See also: AWS API Documentation

Request Syntax

response = client.get_query_results(
    queryId='string'
)
Parameters
queryId (string) --

[REQUIRED]

The ID number of the query.

Return type
dict
Returns
Response Syntax
{
    'results': [
        [
            {
                'field': 'string',
                'value': 'string'
            },
        ],
    ],
    'statistics': {
        'recordsMatched': 123.0,
        'recordsScanned': 123.0,
        'bytesScanned': 123.0
    },
    'status': 'Scheduled'|'Running'|'Complete'|'Failed'|'Cancelled'|'Timeout'|'Unknown'
}

Response Structure

  • (dict) --
    • results (list) --

      The log events that matched the query criteria during the most recent time it ran.

      The results value is an array of arrays. Each log event is one object in the top-level array. Each of these log event objects is an array of field / value pairs.

      • (list) --
        • (dict) --

          Contains one field from one log event returned by a CloudWatch Logs Insights query, along with the value of that field.

          For more information about the fields that are generated by CloudWatch logs, see Supported Logs and Discovered Fields.

          • field (string) --

            The log event field.

          • value (string) --

            The value of this field.

    • statistics (dict) --

      Includes the number of log events scanned by the query, the number of log events that matched the query criteria, and the total number of bytes in the log events that were scanned. These values reflect the full raw results of the query.

      • recordsMatched (float) --

        The number of log events that matched the query string.

      • recordsScanned (float) --

        The total number of log events scanned during the query.

      • bytesScanned (float) --

        The total number of bytes in the log events scanned during the query.

    • status (string) --

      The status of the most recent running of the query. Possible values are Cancelled , Complete , Failed , Running , Scheduled , Timeout , and Unknown .

      Queries time out after 15 minutes of runtime. To avoid having your queries time out, reduce the time range being searched or partition your query into a number of queries.

Exceptions

get_waiter(waiter_name)

Returns an object that can wait for some condition.

Parameters
waiter_name (str) -- The name of the waiter to get. See the waiters section of the service docs for a list of available waiters.
Returns
The specified waiter object.
Return type
botocore.waiter.Waiter
list_tags_for_resource(**kwargs)

Displays the tags associated with a CloudWatch Logs resource. Currently, log groups and destinations support tagging.

See also: AWS API Documentation

Request Syntax

response = client.list_tags_for_resource(
    resourceArn='string'
)
Parameters
resourceArn (string) --

[REQUIRED]

The ARN of the resource that you want to view tags for.

The ARN format of a log group is arn:aws:logs:Region:account-id:log-group:log-group-name

The ARN format of a destination is arn:aws:logs:Region:account-id:destination:destination-name

For more information about ARN format, see CloudWatch Logs resources and operations.

Return type
dict
Returns
Response Syntax
{
    'tags': {
        'string': 'string'
    }
}

Response Structure

  • (dict) --
    • tags (dict) --

      The list of tags associated with the requested resource.>

      • (string) --
        • (string) --

Exceptions

list_tags_log_group(**kwargs)

Warning

The ListTagsLogGroup operation is on the path to deprecation. We recommend that you use ListTagsForResource instead.

Lists the tags for the specified log group.

Danger

This operation is deprecated and may not function as expected. This operation should not be used going forward and is only kept for the purpose of backwards compatiblity.

See also: AWS API Documentation

Request Syntax

response = client.list_tags_log_group(
    logGroupName='string'
)
Parameters
logGroupName (string) --

[REQUIRED]

The name of the log group.

Return type
dict
Returns
Response Syntax
{
    'tags': {
        'string': 'string'
    }
}

Response Structure

  • (dict) --
    • tags (dict) --

      The tags for the log group.

      • (string) --
        • (string) --

Exceptions

put_data_protection_policy(**kwargs)

Creates a data protection policy for the specified log group. A data protection policy can help safeguard sensitive data that's ingested by the log group by auditing and masking the sensitive log data.

Warning

Sensitive data is detected and masked when it is ingested into the log group. When you set a data protection policy, log events ingested into the log group before that time are not masked.

By default, when a user views a log event that includes masked data, the sensitive data is replaced by asterisks. A user who has the logs:Unmask permission can use a GetLogEvents or FilterLogEvents operation with the unmask parameter set to true to view the unmasked log events. Users with the logs:Unmask can also view unmasked data in the CloudWatch Logs console by running a CloudWatch Logs Insights query with the unmask query command.

For more information, including a list of types of data that can be audited and masked, see Protect sensitive log data with masking.

See also: AWS API Documentation

Request Syntax

response = client.put_data_protection_policy(
    logGroupIdentifier='string',
    policyDocument='string'
)
Parameters
  • logGroupIdentifier (string) --

    [REQUIRED]

    Specify either the log group name or log group ARN.

  • policyDocument (string) --

    [REQUIRED]

    Specify the data protection policy, in JSON.

    This policy must include two JSON blocks:

    • The first block must include both a DataIdentifer array and an Operation property with an Audit action. The DataIdentifer array lists the types of sensitive data that you want to mask. For more information about the available options, see Types of data that you can mask. The Operation property with an Audit action is required to find the sensitive data terms. This Audit action must contain a FindingsDestination object. You can optionally use that FindingsDestination object to list one or more destinations to send audit findings to. If you specify destinations such as log groups, Kinesis Data Firehose streams, and S3 buckets, they must already exist.
    • The second block must include both a DataIdentifer array and an Operation property with an Deidentify action. The DataIdentifer array must exactly match the DataIdentifer array in the first block of the policy. The Operation property with the Deidentify action is what actually masks the data, and it must contain the "MaskConfig": {} object. The "MaskConfig": {} object must be empty.

    For an example data protection policy, see the Examples section on this page.

    Warning

    The contents of two DataIdentifer arrays must match exactly.

Return type

dict

Returns

Response Syntax

{
    'logGroupIdentifier': 'string',
    'policyDocument': 'string',
    'lastUpdatedTime': 123
}

Response Structure

  • (dict) --

    • logGroupIdentifier (string) --

      The log group name or ARN that you specified in your request.

    • policyDocument (string) --

      The data protection policy used for this log group.

    • lastUpdatedTime (integer) --

      The date and time that this policy was most recently updated.

Exceptions

put_destination(**kwargs)

Creates or updates a destination. This operation is used only to create destinations for cross-account subscriptions.

A destination encapsulates a physical resource (such as an Amazon Kinesis stream). With a destination, you can subscribe to a real-time stream of log events for a different account, ingested using PutLogEvents.

Through an access policy, a destination controls what is written to it. By default, PutDestination does not set any access policy with the destination, which means a cross-account user cannot call PutSubscriptionFilter against this destination. To enable this, the destination owner must call PutDestinationPolicy after PutDestination .

To perform a PutDestination operation, you must also have the iam:PassRole permission.

See also: AWS API Documentation

Request Syntax

response = client.put_destination(
    destinationName='string',
    targetArn='string',
    roleArn='string',
    tags={
        'string': 'string'
    }
)
Parameters
  • destinationName (string) --

    [REQUIRED]

    A name for the destination.

  • targetArn (string) --

    [REQUIRED]

    The ARN of an Amazon Kinesis stream to which to deliver matching log events.

  • roleArn (string) --

    [REQUIRED]

    The ARN of an IAM role that grants CloudWatch Logs permissions to call the Amazon Kinesis PutRecord operation on the destination stream.

  • tags (dict) --

    An optional list of key-value pairs to associate with the resource.

    For more information about tagging, see Tagging Amazon Web Services resources

    • (string) --
      • (string) --
Return type

dict

Returns

Response Syntax

{
    'destination': {
        'destinationName': 'string',
        'targetArn': 'string',
        'roleArn': 'string',
        'accessPolicy': 'string',
        'arn': 'string',
        'creationTime': 123
    }
}

Response Structure

  • (dict) --

    • destination (dict) --

      The destination.

      • destinationName (string) --

        The name of the destination.

      • targetArn (string) --

        The Amazon Resource Name (ARN) of the physical target where the log events are delivered (for example, a Kinesis stream).

      • roleArn (string) --

        A role for impersonation, used when delivering log events to the target.

      • accessPolicy (string) --

        An IAM policy document that governs which Amazon Web Services accounts can create subscription filters against this destination.

      • arn (string) --

        The ARN of this destination.

      • creationTime (integer) --

        The creation time of the destination, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC.

Exceptions

put_destination_policy(**kwargs)

Creates or updates an access policy associated with an existing destination. An access policy is an IAM policy document that is used to authorize claims to register a subscription filter against a given destination.

If multiple Amazon Web Services accounts are sending logs to this destination, each sender account must be listed separately in the policy. The policy does not support specifying * as the Principal or the use of the aws:PrincipalOrgId global key.

See also: AWS API Documentation

Request Syntax

response = client.put_destination_policy(
    destinationName='string',
    accessPolicy='string',
    forceUpdate=True|False
)
Parameters
  • destinationName (string) --

    [REQUIRED]

    A name for an existing destination.

  • accessPolicy (string) --

    [REQUIRED]

    An IAM policy document that authorizes cross-account users to deliver their log events to the associated destination. This can be up to 5120 bytes.

  • forceUpdate (boolean) --

    Specify true if you are updating an existing destination policy to grant permission to an organization ID instead of granting permission to individual AWS accounts. Before you update a destination policy this way, you must first update the subscription filters in the accounts that send logs to this destination. If you do not, the subscription filters might stop working. By specifying true for forceUpdate , you are affirming that you have already updated the subscription filters. For more information, see Updating an existing cross-account subscription

    If you omit this parameter, the default of false is used.

Returns

None

Exceptions

put_log_events(**kwargs)

Uploads a batch of log events to the specified log stream.

You must include the sequence token obtained from the response of the previous call. An upload in a newly created log stream does not require a sequence token. You can also get the sequence token in the expectedSequenceToken field from InvalidSequenceTokenException . If you call PutLogEvents twice within a narrow time period using the same value for sequenceToken , both calls might be successful or one might be rejected.

The batch of events must satisfy the following constraints:

  • The maximum batch size is 1,048,576 bytes. This size is calculated as the sum of all event messages in UTF-8, plus 26 bytes for each log event.
  • None of the log events in the batch can be more than 2 hours in the future.
  • None of the log events in the batch can be more than 14 days in the past. Also, none of the log events can be from earlier than the retention period of the log group.
  • The log events in the batch must be in chronological order by their timestamp. The timestamp is the time that the event occurred, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . (In Amazon Web Services Tools for PowerShell and the Amazon Web Services SDK for .NET, the timestamp is specified in .NET format: yyyy-mm-ddThh:mm:ss . For example, 2017-09-15T13:45:30 .)
  • A batch of log events in a single request cannot span more than 24 hours. Otherwise, the operation fails.
  • The maximum number of log events in a batch is 10,000.
  • There is a quota of five requests per second per log stream. Additional requests are throttled. This quota can't be changed.

If a call to PutLogEvents returns "UnrecognizedClientException" the most likely cause is a non-valid Amazon Web Services access key ID or secret key.

See also: AWS API Documentation

Request Syntax

response = client.put_log_events(
    logGroupName='string',
    logStreamName='string',
    logEvents=[
        {
            'timestamp': 123,
            'message': 'string'
        },
    ],
    sequenceToken='string'
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • logStreamName (string) --

    [REQUIRED]

    The name of the log stream.

  • logEvents (list) --

    [REQUIRED]

    The log events.

    • (dict) --

      Represents a log event, which is a record of activity that was recorded by the application or resource being monitored.

      • timestamp (integer) -- [REQUIRED]

        The time the event occurred, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

      • message (string) -- [REQUIRED]

        The raw event message.

  • sequenceToken (string) -- The sequence token obtained from the response of the previous PutLogEvents call. An upload in a newly created log stream does not require a sequence token. You can also get the sequence token using DescribeLogStreams. If you call PutLogEvents twice within a narrow time period using the same value for sequenceToken , both calls might be successful or one might be rejected.
Return type

dict

Returns

Response Syntax

{
    'nextSequenceToken': 'string',
    'rejectedLogEventsInfo': {
        'tooNewLogEventStartIndex': 123,
        'tooOldLogEventEndIndex': 123,
        'expiredLogEventEndIndex': 123
    }
}

Response Structure

  • (dict) --

    • nextSequenceToken (string) --

      The next sequence token.

    • rejectedLogEventsInfo (dict) --

      The rejected events.

      • tooNewLogEventStartIndex (integer) --

        The log events that are too new.

      • tooOldLogEventEndIndex (integer) --

        The log events that are dated too far in the past.

      • expiredLogEventEndIndex (integer) --

        The expired log events.

Exceptions

put_metric_filter(**kwargs)

Creates or updates a metric filter and associates it with the specified log group. With metric filters, you can configure rules to extract metric data from log events ingested through PutLogEvents.

The maximum number of metric filters that can be associated with a log group is 100.

When you create a metric filter, you can also optionally assign a unit and dimensions to the metric that is created.

Warning

Metrics extracted from log events are charged as custom metrics. To prevent unexpected high charges, do not specify high-cardinality fields such as IPAddress or requestID as dimensions. Each different value found for a dimension is treated as a separate metric and accrues charges as a separate custom metric.

CloudWatch Logs disables a metric filter if it generates 1,000 different name/value pairs for your specified dimensions within a certain amount of time. This helps to prevent accidental high charges.

You can also set up a billing alarm to alert you if your charges are higher than expected. For more information, see Creating a Billing Alarm to Monitor Your Estimated Amazon Web Services Charges.

See also: AWS API Documentation

Request Syntax

response = client.put_metric_filter(
    logGroupName='string',
    filterName='string',
    filterPattern='string',
    metricTransformations=[
        {
            'metricName': 'string',
            'metricNamespace': 'string',
            'metricValue': 'string',
            'defaultValue': 123.0,
            'dimensions': {
                'string': 'string'
            },
            'unit': 'Seconds'|'Microseconds'|'Milliseconds'|'Bytes'|'Kilobytes'|'Megabytes'|'Gigabytes'|'Terabytes'|'Bits'|'Kilobits'|'Megabits'|'Gigabits'|'Terabits'|'Percent'|'Count'|'Bytes/Second'|'Kilobytes/Second'|'Megabytes/Second'|'Gigabytes/Second'|'Terabytes/Second'|'Bits/Second'|'Kilobits/Second'|'Megabits/Second'|'Gigabits/Second'|'Terabits/Second'|'Count/Second'|'None'
        },
    ]
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • filterName (string) --

    [REQUIRED]

    A name for the metric filter.

  • filterPattern (string) --

    [REQUIRED]

    A filter pattern for extracting metric data out of ingested log events.

  • metricTransformations (list) --

    [REQUIRED]

    A collection of information that defines how metric data gets emitted.

    • (dict) --

      Indicates how to transform ingested log events to metric data in a CloudWatch metric.

      • metricName (string) -- [REQUIRED]

        The name of the CloudWatch metric.

      • metricNamespace (string) -- [REQUIRED]

        A custom namespace to contain your metric in CloudWatch. Use namespaces to group together metrics that are similar. For more information, see Namespaces.

      • metricValue (string) -- [REQUIRED]

        The value to publish to the CloudWatch metric when a filter pattern matches a log event.

      • defaultValue (float) --

        (Optional) The value to emit when a filter pattern does not match a log event. This value can be null.

      • dimensions (dict) --

        The fields to use as dimensions for the metric. One metric filter can include as many as three dimensions.

        Warning

        Metrics extracted from log events are charged as custom metrics. To prevent unexpected high charges, do not specify high-cardinality fields such as IPAddress or requestID as dimensions. Each different value found for a dimension is treated as a separate metric and accrues charges as a separate custom metric.

        CloudWatch Logs disables a metric filter if it generates 1000 different name/value pairs for your specified dimensions within a certain amount of time. This helps to prevent accidental high charges.

        You can also set up a billing alarm to alert you if your charges are higher than expected. For more information, see Creating a Billing Alarm to Monitor Your Estimated Amazon Web Services Charges.

        • (string) --
          • (string) --
      • unit (string) --

        The unit to assign to the metric. If you omit this, the unit is set as None .

Returns

None

Exceptions

put_query_definition(**kwargs)

Creates or updates a query definition for CloudWatch Logs Insights. For more information, see Analyzing Log Data with CloudWatch Logs Insights.

To update a query definition, specify its queryDefinitionId in your request. The values of name , queryString , and logGroupNames are changed to the values that you specify in your update operation. No current values are retained from the current query definition. For example, imagine updating a current query definition that includes log groups. If you don't specify the logGroupNames parameter in your update operation, the query definition changes to contain no log groups.

You must have the logs:PutQueryDefinition permission to be able to perform this operation.

See also: AWS API Documentation

Request Syntax

response = client.put_query_definition(
    name='string',
    queryDefinitionId='string',
    logGroupNames=[
        'string',
    ],
    queryString='string'
)
Parameters
  • name (string) --

    [REQUIRED]

    A name for the query definition. If you are saving numerous query definitions, we recommend that you name them. This way, you can find the ones you want by using the first part of the name as a filter in the queryDefinitionNamePrefix parameter of DescribeQueryDefinitions.

  • queryDefinitionId (string) --

    If you are updating a query definition, use this parameter to specify the ID of the query definition that you want to update. You can use DescribeQueryDefinitions to retrieve the IDs of your saved query definitions.

    If you are creating a query definition, do not specify this parameter. CloudWatch generates a unique ID for the new query definition and include it in the response to this operation.

  • logGroupNames (list) --

    Use this parameter to include specific log groups as part of your query definition.

    If you are updating a query definition and you omit this parameter, then the updated definition will contain no log groups.

    • (string) --
  • queryString (string) --

    [REQUIRED]

    The query string to use for this definition. For more information, see CloudWatch Logs Insights Query Syntax.

Return type

dict

Returns

Response Syntax

{
    'queryDefinitionId': 'string'
}

Response Structure

  • (dict) --

    • queryDefinitionId (string) --

      The ID of the query definition.

Exceptions

put_resource_policy(**kwargs)

Creates or updates a resource policy allowing other Amazon Web Services services to put log events to this account, such as Amazon Route 53. An account can have up to 10 resource policies per Amazon Web Services Region.

See also: AWS API Documentation

Request Syntax

response = client.put_resource_policy(
    policyName='string',
    policyDocument='string'
)
Parameters
  • policyName (string) -- Name of the new policy. This parameter is required.
  • policyDocument (string) --

    Details of the new policy, including the identity of the principal that is enabled to put logs to this account. This is formatted as a JSON string. This parameter is required.

    The following example creates a resource policy enabling the Route 53 service to put DNS query logs in to the specified log group. Replace "logArn" with the ARN of your CloudWatch Logs resource, such as a log group or log stream.

    CloudWatch Logs also supports aws:SourceArn and aws:SourceAccount condition context keys.

    In the example resource policy, you would replace the value of SourceArn with the resource making the call from Route 53 to CloudWatch Logs. You would also replace the value of SourceAccount with the Amazon Web Services account ID making that call.

    { "Version": "2012-10-17", "Statement": [ { "Sid": "Route53LogsToCloudWatchLogs", "Effect": "Allow", "Principal": { "Service": [ "route53.amazonaws.com" ] }, "Action": "logs:PutLogEvents", "Resource": "logArn", "Condition": { "ArnLike": { "aws:SourceArn": "myRoute53ResourceArn" }, "StringEquals": { "aws:SourceAccount": "myAwsAccountId" } } } ] }
Return type

dict

Returns

Response Syntax

{
    'resourcePolicy': {
        'policyName': 'string',
        'policyDocument': 'string',
        'lastUpdatedTime': 123
    }
}

Response Structure

  • (dict) --

    • resourcePolicy (dict) --

      The new policy.

      • policyName (string) --

        The name of the resource policy.

      • policyDocument (string) --

        The details of the policy.

      • lastUpdatedTime (integer) --

        Timestamp showing when this policy was last updated, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

Exceptions

put_retention_policy(**kwargs)

Sets the retention of the specified log group. With a retention policy, you can configure the number of days for which to retain log events in the specified log group.

Note

CloudWatch Logs doesn’t immediately delete log events when they reach their retention setting. It typically takes up to 72 hours after that before log events are deleted, but in rare situations might take longer.

To illustrate, imagine that you change a log group to have a longer retention setting when it contains log events that are past the expiration date, but haven’t been deleted. Those log events will take up to 72 hours to be deleted after the new retention date is reached. To make sure that log data is deleted permanently, keep a log group at its lower retention setting until 72 hours after the previous retention period ends. Alternatively, wait to change the retention setting until you confirm that the earlier log events are deleted.

See also: AWS API Documentation

Request Syntax

response = client.put_retention_policy(
    logGroupName='string',
    retentionInDays=123
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • retentionInDays (integer) --

    [REQUIRED]

    The number of days to retain the log events in the specified log group. Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 2192, 2557, 2922, 3288, and 3653.

    To set a log group so that its log events do not expire, use DeleteRetentionPolicy.

Returns

None

Exceptions

put_subscription_filter(**kwargs)

Creates or updates a subscription filter and associates it with the specified log group. With subscription filters, you can subscribe to a real-time stream of log events ingested through PutLogEvents and have them delivered to a specific destination. When log events are sent to the receiving service, they are Base64 encoded and compressed with the GZIP format.

The following destinations are supported for subscription filters:

  • An Amazon Kinesis data stream belonging to the same account as the subscription filter, for same-account delivery.
  • A logical destination that belongs to a different account, for cross-account delivery.
  • An Amazon Kinesis Data Firehose delivery stream that belongs to the same account as the subscription filter, for same-account delivery.
  • An Lambda function that belongs to the same account as the subscription filter, for same-account delivery.

Each log group can have up to two subscription filters associated with it. If you are updating an existing filter, you must specify the correct name in filterName .

To perform a PutSubscriptionFilter operation, you must also have the iam:PassRole permission.

See also: AWS API Documentation

Request Syntax

response = client.put_subscription_filter(
    logGroupName='string',
    filterName='string',
    filterPattern='string',
    destinationArn='string',
    roleArn='string',
    distribution='Random'|'ByLogStream'
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • filterName (string) --

    [REQUIRED]

    A name for the subscription filter. If you are updating an existing filter, you must specify the correct name in filterName . To find the name of the filter currently associated with a log group, use DescribeSubscriptionFilters.

  • filterPattern (string) --

    [REQUIRED]

    A filter pattern for subscribing to a filtered stream of log events.

  • destinationArn (string) --

    [REQUIRED]

    The ARN of the destination to deliver matching log events to. Currently, the supported destinations are:

    • An Amazon Kinesis stream belonging to the same account as the subscription filter, for same-account delivery.
    • A logical destination (specified using an ARN) belonging to a different account, for cross-account delivery. If you're setting up a cross-account subscription, the destination must have an IAM policy associated with it. The IAM policy must allow the sender to send logs to the destination. For more information, see PutDestinationPolicy.
    • A Kinesis Data Firehose delivery stream belonging to the same account as the subscription filter, for same-account delivery.
    • A Lambda function belonging to the same account as the subscription filter, for same-account delivery.
  • roleArn (string) -- The ARN of an IAM role that grants CloudWatch Logs permissions to deliver ingested log events to the destination stream. You don't need to provide the ARN when you are working with a logical destination for cross-account delivery.
  • distribution (string) -- The method used to distribute log data to the destination. By default, log data is grouped by log stream, but the grouping can be set to random for a more even distribution. This property is only applicable when the destination is an Amazon Kinesis data stream.
Returns

None

Exceptions

start_query(**kwargs)

Schedules a query of a log group using CloudWatch Logs Insights. You specify the log group and time range to query and the query string to use.

For more information, see CloudWatch Logs Insights Query Syntax.

Queries time out after 15 minutes of runtime. If your queries are timing out, reduce the time range being searched or partition your query into a number of queries.

If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account to start a query in a linked source account. For more information, see CloudWatch cross-account observability. For a cross-account StartQuery operation, the query definition must be defined in the monitoring account.

You can have up to 20 concurrent CloudWatch Logs insights queries, including queries that have been added to dashboards.

See also: AWS API Documentation

Request Syntax

response = client.start_query(
    logGroupName='string',
    logGroupNames=[
        'string',
    ],
    logGroupIdentifiers=[
        'string',
    ],
    startTime=123,
    endTime=123,
    queryString='string',
    limit=123
)
Parameters
  • logGroupName (string) --

    The log group on which to perform the query.

    Note

    A StartQuery operation must include exactly one of the following parameters: logGroupName , logGroupNames or logGroupIdentifiers .

  • logGroupNames (list) --

    The list of log groups to be queried. You can include up to 50 log groups.

    Note

    A StartQuery operation must include exactly one of the following parameters: logGroupName , logGroupNames or logGroupIdentifiers .

    • (string) --
  • logGroupIdentifiers (list) --

    The list of log groups to query. You can include up to 50 log groups.

    You can specify them by the log group name or ARN. If a log group that you're querying is in a source account and you're using a monitoring account, you must specify the ARN of the log group here. The query definition must also be defined in the monitoring account.

    If you specify an ARN, the ARN can't end with an asterisk (*).

    A StartQuery operation must include exactly one of the following parameters: logGroupName , logGroupNames or logGroupIdentifiers .

    • (string) --
  • startTime (integer) --

    [REQUIRED]

    The beginning of the time range to query. The range is inclusive, so the specified start time is included in the query. Specified as epoch time, the number of seconds since January 1, 1970, 00:00:00 UTC .

  • endTime (integer) --

    [REQUIRED]

    The end of the time range to query. The range is inclusive, so the specified end time is included in the query. Specified as epoch time, the number of seconds since January 1, 1970, 00:00:00 UTC .

  • queryString (string) --

    [REQUIRED]

    The query string to use. For more information, see CloudWatch Logs Insights Query Syntax.

  • limit (integer) -- The maximum number of log events to return in the query. If the query string uses the fields command, only the specified fields and their values are returned. The default is 1000.
Return type

dict

Returns

Response Syntax

{
    'queryId': 'string'
}

Response Structure

  • (dict) --

    • queryId (string) --

      The unique ID of the query.

Exceptions

stop_query(**kwargs)

Stops a CloudWatch Logs Insights query that is in progress. If the query has already ended, the operation returns an error indicating that the specified query is not running.

See also: AWS API Documentation

Request Syntax

response = client.stop_query(
    queryId='string'
)
Parameters
queryId (string) --

[REQUIRED]

The ID number of the query to stop. To find this ID number, use DescribeQueries .

Return type
dict
Returns
Response Syntax
{
    'success': True|False
}

Response Structure

  • (dict) --
    • success (boolean) --

      This is true if the query was stopped by the StopQuery operation.

Exceptions

tag_log_group(**kwargs)

Warning

The TagLogGroup operation is on the path to deprecation. We recommend that you use TagResource instead.

Adds or updates the specified tags for the specified log group.

To list the tags for a log group, use ListTagsForResource. To remove tags, use UntagResource.

For more information about tags, see Tag Log Groups in Amazon CloudWatch Logs in the Amazon CloudWatch Logs User Guide .

CloudWatch Logs doesn’t support IAM policies that prevent users from assigning specified tags to log groups using the aws:Resource/key-name or aws:TagKeys condition keys. For more information about using tags to control access, see Controlling access to Amazon Web Services resources using tags.

Danger

This operation is deprecated and may not function as expected. This operation should not be used going forward and is only kept for the purpose of backwards compatiblity.

See also: AWS API Documentation

Request Syntax

response = client.tag_log_group(
    logGroupName='string',
    tags={
        'string': 'string'
    }
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • tags (dict) --

    [REQUIRED]

    The key-value pairs to use for the tags.

    • (string) --
      • (string) --
Returns

None

Exceptions

tag_resource(**kwargs)

Assigns one or more tags (key-value pairs) to the specified CloudWatch Logs resource. Currently, the only CloudWatch Logs resources that can be tagged are log groups and destinations.

Tags can help you organize and categorize your resources. You can also use them to scope user permissions by granting a user permission to access or change only resources with certain tag values.

Tags don't have any semantic meaning to Amazon Web Services and are interpreted strictly as strings of characters.

You can use the TagResource action with a resource that already has tags. If you specify a new tag key for the alarm, this tag is appended to the list of tags associated with the alarm. If you specify a tag key that is already associated with the alarm, the new tag value that you specify replaces the previous value for that tag.

You can associate as many as 50 tags with a CloudWatch Logs resource.

See also: AWS API Documentation

Request Syntax

response = client.tag_resource(
    resourceArn='string',
    tags={
        'string': 'string'
    }
)
Parameters
  • resourceArn (string) --

    [REQUIRED]

    The ARN of the resource that you're adding tags to.

    The ARN format of a log group is arn:aws:logs:Region:account-id:log-group:log-group-name

    The ARN format of a destination is arn:aws:logs:Region:account-id:destination:destination-name

    For more information about ARN format, see CloudWatch Logs resources and operations.

  • tags (dict) --

    [REQUIRED]

    The list of key-value pairs to associate with the resource.

    • (string) --
      • (string) --
Returns

None

Exceptions

test_metric_filter(**kwargs)

Tests the filter pattern of a metric filter against a sample of log event messages. You can use this operation to validate the correctness of a metric filter pattern.

See also: AWS API Documentation

Request Syntax

response = client.test_metric_filter(
    filterPattern='string',
    logEventMessages=[
        'string',
    ]
)
Parameters
  • filterPattern (string) --

    [REQUIRED]

    A symbolic description of how CloudWatch Logs should interpret the data in each log event. For example, a log event can contain timestamps, IP addresses, strings, and so on. You use the filter pattern to specify what to look for in the log event message.

  • logEventMessages (list) --

    [REQUIRED]

    The log event messages to test.

    • (string) --
Return type

dict

Returns

Response Syntax

{
    'matches': [
        {
            'eventNumber': 123,
            'eventMessage': 'string',
            'extractedValues': {
                'string': 'string'
            }
        },
    ]
}

Response Structure

  • (dict) --

    • matches (list) --

      The matched events.

      • (dict) --

        Represents a matched event.

        • eventNumber (integer) --

          The event number.

        • eventMessage (string) --

          The raw event data.

        • extractedValues (dict) --

          The values extracted from the event data by the filter.

          • (string) --
            • (string) --

Exceptions

untag_log_group(**kwargs)

Warning

The UntagLogGroup operation is on the path to deprecation. We recommend that you use UntagResource instead.

Removes the specified tags from the specified log group.

To list the tags for a log group, use ListTagsForResource. To add tags, use TagResource.

CloudWatch Logs doesn’t support IAM policies that prevent users from assigning specified tags to log groups using the aws:Resource/key-name or aws:TagKeys condition keys.

Danger

This operation is deprecated and may not function as expected. This operation should not be used going forward and is only kept for the purpose of backwards compatiblity.

See also: AWS API Documentation

Request Syntax

response = client.untag_log_group(
    logGroupName='string',
    tags=[
        'string',
    ]
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • tags (list) --

    [REQUIRED]

    The tag keys. The corresponding tags are removed from the log group.

    • (string) --
Returns

None

Exceptions

untag_resource(**kwargs)

Removes one or more tags from the specified resource.

See also: AWS API Documentation

Request Syntax

response = client.untag_resource(
    resourceArn='string',
    tagKeys=[
        'string',
    ]
)
Parameters
  • resourceArn (string) --

    [REQUIRED]

    The ARN of the CloudWatch Logs resource that you're removing tags from.

    The ARN format of a log group is arn:aws:logs:Region:account-id:log-group:log-group-name

    The ARN format of a destination is arn:aws:logs:Region:account-id:destination:destination-name

    For more information about ARN format, see CloudWatch Logs resources and operations.

  • tagKeys (list) --

    [REQUIRED]

    The list of tag keys to remove from the resource.

    • (string) --
Returns

None

Exceptions

Client Exceptions

Client exceptions are available on a client instance via the exceptions property. For more detailed instructions and examples on the exact usage of client exceptions, see the error handling user guide.

The available client exceptions are:

class CloudWatchLogs.Client.exceptions.DataAlreadyAcceptedException

The event was already logged.

Example

try:
  ...
except client.exceptions.DataAlreadyAcceptedException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{
    'expectedSequenceToken': 'string',
    'Error': {
        'Code': 'string',
        'Message': 'string'
    }
}

Structure

  • (dict) --

    The event was already logged.

    • expectedSequenceToken (string) --
    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.InvalidOperationException

The operation is not valid on the specified resource.

Example

try:
  ...
except client.exceptions.InvalidOperationException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{}

Structure

  • (dict) --

    The operation is not valid on the specified resource.

    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.InvalidParameterException

A parameter is specified incorrectly.

Example

try:
  ...
except client.exceptions.InvalidParameterException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{}

Structure

  • (dict) --

    A parameter is specified incorrectly.

    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.InvalidSequenceTokenException

The sequence token is not valid. You can get the correct sequence token in the expectedSequenceToken field in the InvalidSequenceTokenException message.

Example

try:
  ...
except client.exceptions.InvalidSequenceTokenException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{
    'expectedSequenceToken': 'string',
    'Error': {
        'Code': 'string',
        'Message': 'string'
    }
}

Structure

  • (dict) --

    The sequence token is not valid. You can get the correct sequence token in the expectedSequenceToken field in the InvalidSequenceTokenException message.

    • expectedSequenceToken (string) --
    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.LimitExceededException

You have reached the maximum number of resources that can be created.

Example

try:
  ...
except client.exceptions.LimitExceededException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{}

Structure

  • (dict) --

    You have reached the maximum number of resources that can be created.

    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.MalformedQueryException

The query string is not valid. Details about this error are displayed in a QueryCompileError object. For more information, see QueryCompileError.

For more information about valid query syntax, see CloudWatch Logs Insights Query Syntax.

Example

try:
  ...
except client.exceptions.MalformedQueryException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{
    'queryCompileError': {
        'location': {
            'startCharOffset': 123,
            'endCharOffset': 123
        },
        'message': 'string'
    },
    'Error': {
        'Code': 'string',
        'Message': 'string'
    }
}

Structure

  • (dict) --

    The query string is not valid. Details about this error are displayed in a QueryCompileError object. For more information, see QueryCompileError.

    For more information about valid query syntax, see CloudWatch Logs Insights Query Syntax.

    • queryCompileError (dict) --

      Reserved.

      • location (dict) --

        Reserved.

        • startCharOffset (integer) --

          Reserved.

        • endCharOffset (integer) --

          Reserved.

      • message (string) --

        Reserved.

    • Error (dict) -- Normalized access to common exception attributes.

      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.OperationAbortedException

Multiple concurrent requests to update the same resource were in conflict.

Example

try:
  ...
except client.exceptions.OperationAbortedException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{}

Structure

  • (dict) --

    Multiple concurrent requests to update the same resource were in conflict.

    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.ResourceAlreadyExistsException

The specified resource already exists.

Example

try:
  ...
except client.exceptions.ResourceAlreadyExistsException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{}

Structure

  • (dict) --

    The specified resource already exists.

    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.ResourceNotFoundException

The specified resource does not exist.

Example

try:
  ...
except client.exceptions.ResourceNotFoundException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{}

Structure

  • (dict) --

    The specified resource does not exist.

    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.ServiceUnavailableException

The service cannot complete the request.

Example

try:
  ...
except client.exceptions.ServiceUnavailableException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{}

Structure

  • (dict) --

    The service cannot complete the request.

    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.TooManyTagsException

A resource can have no more than 50 tags.

Example

try:
  ...
except client.exceptions.TooManyTagsException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{
    'message': 'string',
    'resourceName': 'string',
    'Error': {
        'Code': 'string',
        'Message': 'string'
    }
}

Structure

  • (dict) --

    A resource can have no more than 50 tags.

    • message (string) --

    • resourceName (string) --

      The name of the resource.

    • Error (dict) -- Normalized access to common exception attributes.

      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.
class CloudWatchLogs.Client.exceptions.UnrecognizedClientException

The most likely cause is an Amazon Web Services access key ID or secret key that's not valid.

Example

try:
  ...
except client.exceptions.UnrecognizedClientException as e:
  print(e.response)
response

The parsed error response. All exceptions have a top level Error key that provides normalized access to common exception atrributes. All other keys are specific to this service or exception class.

Syntax

{}

Structure

  • (dict) --

    The most likely cause is an Amazon Web Services access key ID or secret key that's not valid.

    • Error (dict) -- Normalized access to common exception attributes.
      • Code (string) -- An identifier specifying the exception type.
      • Message (string) -- A descriptive message explaining why the exception occured.

Paginators

The available paginators are:

class CloudWatchLogs.Paginator.DescribeDestinations
paginator = client.get_paginator('describe_destinations')
paginate(**kwargs)

Creates an iterator that will paginate through responses from CloudWatchLogs.Client.describe_destinations().

See also: AWS API Documentation

Request Syntax

response_iterator = paginator.paginate(
    DestinationNamePrefix='string',
    PaginationConfig={
        'MaxItems': 123,
        'PageSize': 123,
        'StartingToken': 'string'
    }
)
Parameters
  • DestinationNamePrefix (string) -- The prefix to match. If you don't specify a value, no prefix filter is applied.
  • PaginationConfig (dict) --

    A dictionary that provides parameters to control pagination.

    • MaxItems (integer) --

      The total number of items to return. If the total number of items available is more than the value specified in max-items then a NextToken will be provided in the output that you can use to resume pagination.

    • PageSize (integer) --

      The size of each page.

    • StartingToken (string) --

      A token to specify where to start paginating. This is the NextToken from a previous response.

Return type

dict

Returns

Response Syntax

{
    'destinations': [
        {
            'destinationName': 'string',
            'targetArn': 'string',
            'roleArn': 'string',
            'accessPolicy': 'string',
            'arn': 'string',
            'creationTime': 123
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --

    • destinations (list) --

      The destinations.

      • (dict) --

        Represents a cross-account destination that receives subscription log events.

        • destinationName (string) --

          The name of the destination.

        • targetArn (string) --

          The Amazon Resource Name (ARN) of the physical target where the log events are delivered (for example, a Kinesis stream).

        • roleArn (string) --

          A role for impersonation, used when delivering log events to the target.

        • accessPolicy (string) --

          An IAM policy document that governs which Amazon Web Services accounts can create subscription filters against this destination.

        • arn (string) --

          The ARN of this destination.

        • creationTime (integer) --

          The creation time of the destination, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC.

    • NextToken (string) --

      A token to resume pagination.

class CloudWatchLogs.Paginator.DescribeExportTasks
paginator = client.get_paginator('describe_export_tasks')
paginate(**kwargs)

Creates an iterator that will paginate through responses from CloudWatchLogs.Client.describe_export_tasks().

See also: AWS API Documentation

Request Syntax

response_iterator = paginator.paginate(
    taskId='string',
    statusCode='CANCELLED'|'COMPLETED'|'FAILED'|'PENDING'|'PENDING_CANCEL'|'RUNNING',
    PaginationConfig={
        'MaxItems': 123,
        'PageSize': 123,
        'StartingToken': 'string'
    }
)
Parameters
  • taskId (string) -- The ID of the export task. Specifying a task ID filters the results to one or zero export tasks.
  • statusCode (string) -- The status code of the export task. Specifying a status code filters the results to zero or more export tasks.
  • PaginationConfig (dict) --

    A dictionary that provides parameters to control pagination.

    • MaxItems (integer) --

      The total number of items to return. If the total number of items available is more than the value specified in max-items then a NextToken will be provided in the output that you can use to resume pagination.

    • PageSize (integer) --

      The size of each page.

    • StartingToken (string) --

      A token to specify where to start paginating. This is the NextToken from a previous response.

Return type

dict

Returns

Response Syntax

{
    'exportTasks': [
        {
            'taskId': 'string',
            'taskName': 'string',
            'logGroupName': 'string',
            'from': 123,
            'to': 123,
            'destination': 'string',
            'destinationPrefix': 'string',
            'status': {
                'code': 'CANCELLED'|'COMPLETED'|'FAILED'|'PENDING'|'PENDING_CANCEL'|'RUNNING',
                'message': 'string'
            },
            'executionInfo': {
                'creationTime': 123,
                'completionTime': 123
            }
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --

    • exportTasks (list) --

      The export tasks.

      • (dict) --

        Represents an export task.

        • taskId (string) --

          The ID of the export task.

        • taskName (string) --

          The name of the export task.

        • logGroupName (string) --

          The name of the log group from which logs data was exported.

        • from (integer) --

          The start time, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp before this time are not exported.

        • to (integer) --

          The end time, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp later than this time are not exported.

        • destination (string) --

          The name of the S3 bucket to which the log data was exported.

        • destinationPrefix (string) --

          The prefix that was used as the start of Amazon S3 key for every object exported.

        • status (dict) --

          The status of the export task.

          • code (string) --

            The status code of the export task.

          • message (string) --

            The status message related to the status code.

        • executionInfo (dict) --

          Execution information about the export task.

          • creationTime (integer) --

            The creation time of the export task, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

          • completionTime (integer) --

            The completion time of the export task, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

    • NextToken (string) --

      A token to resume pagination.

class CloudWatchLogs.Paginator.DescribeLogGroups
paginator = client.get_paginator('describe_log_groups')
paginate(**kwargs)

Creates an iterator that will paginate through responses from CloudWatchLogs.Client.describe_log_groups().

See also: AWS API Documentation

Request Syntax

response_iterator = paginator.paginate(
    accountIdentifiers=[
        'string',
    ],
    logGroupNamePrefix='string',
    logGroupNamePattern='string',
    includeLinkedAccounts=True|False,
    PaginationConfig={
        'MaxItems': 123,
        'PageSize': 123,
        'StartingToken': 'string'
    }
)
Parameters
  • accountIdentifiers (list) --

    When includeLinkedAccounts is set to True , use this parameter to specify the list of accounts to search. You can specify as many as 20 account IDs in the array.

    • (string) --
  • logGroupNamePrefix (string) --

    The prefix to match.

    Note

    logGroupNamePrefix and logGroupNamePattern are mutually exclusive. Only one of these parameters can be passed.

  • logGroupNamePattern (string) --

    If you specify a string for this parameter, the operation returns only log groups that have names that match the string based on a case-sensitive substring search. For example, if you specify Foo , log groups named FooBar , aws/Foo , and GroupFoo would match, but foo , F/o/o and Froo would not match.

    Note

    logGroupNamePattern and logGroupNamePrefix are mutually exclusive. Only one of these parameters can be passed.

  • includeLinkedAccounts (boolean) --

    If you are using a monitoring account, set this to True to have the operation return log groups in the accounts listed in accountIdentifiers .

    If this parameter is set to true and accountIdentifiers contains a null value, the operation returns all log groups in the monitoring account and all log groups in all source accounts that are linked to the monitoring account.

    Note

    If you specify includeLinkedAccounts in your request, then metricFilterCount , retentionInDays , and storedBytes are not included in the response.

  • PaginationConfig (dict) --

    A dictionary that provides parameters to control pagination.

    • MaxItems (integer) --

      The total number of items to return. If the total number of items available is more than the value specified in max-items then a NextToken will be provided in the output that you can use to resume pagination.

    • PageSize (integer) --

      The size of each page.

    • StartingToken (string) --

      A token to specify where to start paginating. This is the NextToken from a previous response.

Return type

dict

Returns

Response Syntax

{
    'logGroups': [
        {
            'logGroupName': 'string',
            'creationTime': 123,
            'retentionInDays': 123,
            'metricFilterCount': 123,
            'arn': 'string',
            'storedBytes': 123,
            'kmsKeyId': 'string',
            'dataProtectionStatus': 'ACTIVATED'|'DELETED'|'ARCHIVED'|'DISABLED'
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --

    • logGroups (list) --

      The log groups.

      If the retentionInDays value is not included for a log group, then that log group's events do not expire.

      • (dict) --

        Represents a log group.

        • logGroupName (string) --

          The name of the log group.

        • creationTime (integer) --

          The creation time of the log group, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC.

        • retentionInDays (integer) --

          The number of days to retain the log events in the specified log group. Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 2192, 2557, 2922, 3288, and 3653.

          To set a log group so that its log events do not expire, use DeleteRetentionPolicy.

        • metricFilterCount (integer) --

          The number of metric filters.

        • arn (string) --

          The Amazon Resource Name (ARN) of the log group.

        • storedBytes (integer) --

          The number of bytes stored.

        • kmsKeyId (string) --

          The Amazon Resource Name (ARN) of the KMS key to use when encrypting log data.

        • dataProtectionStatus (string) --

          Displays whether this log group has a protection policy, or whether it had one in the past. For more information, see PutDataProtectionPolicy.

    • NextToken (string) --

      A token to resume pagination.

class CloudWatchLogs.Paginator.DescribeLogStreams
paginator = client.get_paginator('describe_log_streams')
paginate(**kwargs)

Creates an iterator that will paginate through responses from CloudWatchLogs.Client.describe_log_streams().

See also: AWS API Documentation

Request Syntax

response_iterator = paginator.paginate(
    logGroupName='string',
    logGroupIdentifier='string',
    logStreamNamePrefix='string',
    orderBy='LogStreamName'|'LastEventTime',
    descending=True|False,
    PaginationConfig={
        'MaxItems': 123,
        'PageSize': 123,
        'StartingToken': 'string'
    }
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

    Note

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logGroupIdentifier (string) --

    Specify either the name or ARN of the log group to view. If the log group is in a source account and you are using a monitoring account, you must use the log group ARN.

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logStreamNamePrefix (string) --

    The prefix to match.

    If orderBy is LastEventTime , you cannot specify this parameter.

  • orderBy (string) --

    If the value is LogStreamName , the results are ordered by log stream name. If the value is LastEventTime , the results are ordered by the event time. The default value is LogStreamName .

    If you order the results by event time, you cannot specify the logStreamNamePrefix parameter.

    lastEventTimestamp represents the time of the most recent log event in the log stream in CloudWatch Logs. This number is expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . lastEventTimestamp updates on an eventual consistency basis. It typically updates in less than an hour from ingestion, but in rare situations might take longer.
  • descending (boolean) -- If the value is true, results are returned in descending order. If the value is to false, results are returned in ascending order. The default value is false.
  • PaginationConfig (dict) --

    A dictionary that provides parameters to control pagination.

    • MaxItems (integer) --

      The total number of items to return. If the total number of items available is more than the value specified in max-items then a NextToken will be provided in the output that you can use to resume pagination.

    • PageSize (integer) --

      The size of each page.

    • StartingToken (string) --

      A token to specify where to start paginating. This is the NextToken from a previous response.

Return type

dict

Returns

Response Syntax

{
    'logStreams': [
        {
            'logStreamName': 'string',
            'creationTime': 123,
            'firstEventTimestamp': 123,
            'lastEventTimestamp': 123,
            'lastIngestionTime': 123,
            'uploadSequenceToken': 'string',
            'arn': 'string',
            'storedBytes': 123
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --

    • logStreams (list) --

      The log streams.

      • (dict) --

        Represents a log stream, which is a sequence of log events from a single emitter of logs.

        • logStreamName (string) --

          The name of the log stream.

        • creationTime (integer) --

          The creation time of the stream, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • firstEventTimestamp (integer) --

          The time of the first event, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • lastEventTimestamp (integer) --

          The time of the most recent log event in the log stream in CloudWatch Logs. This number is expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . The lastEventTime value updates on an eventual consistency basis. It typically updates in less than an hour from ingestion, but in rare situations might take longer.

        • lastIngestionTime (integer) --

          The ingestion time, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • uploadSequenceToken (string) --

          The sequence token.

        • arn (string) --

          The Amazon Resource Name (ARN) of the log stream.

        • storedBytes (integer) --

          The number of bytes stored.

          Important: As of June 17, 2019, this parameter is no longer supported for log streams, and is always reported as zero. This change applies only to log streams. The storedBytes parameter for log groups is not affected.

    • NextToken (string) --

      A token to resume pagination.

class CloudWatchLogs.Paginator.DescribeMetricFilters
paginator = client.get_paginator('describe_metric_filters')
paginate(**kwargs)

Creates an iterator that will paginate through responses from CloudWatchLogs.Client.describe_metric_filters().

See also: AWS API Documentation

Request Syntax

response_iterator = paginator.paginate(
    logGroupName='string',
    filterNamePrefix='string',
    metricName='string',
    metricNamespace='string',
    PaginationConfig={
        'MaxItems': 123,
        'PageSize': 123,
        'StartingToken': 'string'
    }
)
Parameters
  • logGroupName (string) -- The name of the log group.
  • filterNamePrefix (string) -- The prefix to match. CloudWatch Logs uses the value that you set here only if you also include the logGroupName parameter in your request.
  • metricName (string) -- Filters results to include only those with the specified metric name. If you include this parameter in your request, you must also include the metricNamespace parameter.
  • metricNamespace (string) -- Filters results to include only those in the specified namespace. If you include this parameter in your request, you must also include the metricName parameter.
  • PaginationConfig (dict) --

    A dictionary that provides parameters to control pagination.

    • MaxItems (integer) --

      The total number of items to return. If the total number of items available is more than the value specified in max-items then a NextToken will be provided in the output that you can use to resume pagination.

    • PageSize (integer) --

      The size of each page.

    • StartingToken (string) --

      A token to specify where to start paginating. This is the NextToken from a previous response.

Return type

dict

Returns

Response Syntax

{
    'metricFilters': [
        {
            'filterName': 'string',
            'filterPattern': 'string',
            'metricTransformations': [
                {
                    'metricName': 'string',
                    'metricNamespace': 'string',
                    'metricValue': 'string',
                    'defaultValue': 123.0,
                    'dimensions': {
                        'string': 'string'
                    },
                    'unit': 'Seconds'|'Microseconds'|'Milliseconds'|'Bytes'|'Kilobytes'|'Megabytes'|'Gigabytes'|'Terabytes'|'Bits'|'Kilobits'|'Megabits'|'Gigabits'|'Terabits'|'Percent'|'Count'|'Bytes/Second'|'Kilobytes/Second'|'Megabytes/Second'|'Gigabytes/Second'|'Terabytes/Second'|'Bits/Second'|'Kilobits/Second'|'Megabits/Second'|'Gigabits/Second'|'Terabits/Second'|'Count/Second'|'None'
                },
            ],
            'creationTime': 123,
            'logGroupName': 'string'
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --

    • metricFilters (list) --

      The metric filters.

      • (dict) --

        Metric filters express how CloudWatch Logs would extract metric observations from ingested log events and transform them into metric data in a CloudWatch metric.

        • filterName (string) --

          The name of the metric filter.

        • filterPattern (string) --

          A symbolic description of how CloudWatch Logs should interpret the data in each log event. For example, a log event can contain timestamps, IP addresses, strings, and so on. You use the filter pattern to specify what to look for in the log event message.

        • metricTransformations (list) --

          The metric transformations.

          • (dict) --

            Indicates how to transform ingested log events to metric data in a CloudWatch metric.

            • metricName (string) --

              The name of the CloudWatch metric.

            • metricNamespace (string) --

              A custom namespace to contain your metric in CloudWatch. Use namespaces to group together metrics that are similar. For more information, see Namespaces.

            • metricValue (string) --

              The value to publish to the CloudWatch metric when a filter pattern matches a log event.

            • defaultValue (float) --

              (Optional) The value to emit when a filter pattern does not match a log event. This value can be null.

            • dimensions (dict) --

              The fields to use as dimensions for the metric. One metric filter can include as many as three dimensions.

              Warning

              Metrics extracted from log events are charged as custom metrics. To prevent unexpected high charges, do not specify high-cardinality fields such as IPAddress or requestID as dimensions. Each different value found for a dimension is treated as a separate metric and accrues charges as a separate custom metric.

              CloudWatch Logs disables a metric filter if it generates 1000 different name/value pairs for your specified dimensions within a certain amount of time. This helps to prevent accidental high charges.

              You can also set up a billing alarm to alert you if your charges are higher than expected. For more information, see Creating a Billing Alarm to Monitor Your Estimated Amazon Web Services Charges.

              • (string) --
                • (string) --
            • unit (string) --

              The unit to assign to the metric. If you omit this, the unit is set as None .

        • creationTime (integer) --

          The creation time of the metric filter, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • logGroupName (string) --

          The name of the log group.

    • NextToken (string) --

      A token to resume pagination.

class CloudWatchLogs.Paginator.DescribeQueries
paginator = client.get_paginator('describe_queries')
paginate(**kwargs)

Creates an iterator that will paginate through responses from CloudWatchLogs.Client.describe_queries().

See also: AWS API Documentation

Request Syntax

response_iterator = paginator.paginate(
    logGroupName='string',
    status='Scheduled'|'Running'|'Complete'|'Failed'|'Cancelled'|'Timeout'|'Unknown',
    PaginationConfig={
        'MaxItems': 123,
        'PageSize': 123,
        'StartingToken': 'string'
    }
)
Parameters
  • logGroupName (string) -- Limits the returned queries to only those for the specified log group.
  • status (string) -- Limits the returned queries to only those that have the specified status. Valid values are Cancelled , Complete , Failed , Running , and Scheduled .
  • PaginationConfig (dict) --

    A dictionary that provides parameters to control pagination.

    • MaxItems (integer) --

      The total number of items to return. If the total number of items available is more than the value specified in max-items then a NextToken will be provided in the output that you can use to resume pagination.

    • PageSize (integer) --

      The size of each page.

    • StartingToken (string) --

      A token to specify where to start paginating. This is the NextToken from a previous response.

Return type

dict

Returns

Response Syntax

{
    'queries': [
        {
            'queryId': 'string',
            'queryString': 'string',
            'status': 'Scheduled'|'Running'|'Complete'|'Failed'|'Cancelled'|'Timeout'|'Unknown',
            'createTime': 123,
            'logGroupName': 'string'
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --

    • queries (list) --

      The list of queries that match the request.

      • (dict) --

        Information about one CloudWatch Logs Insights query that matches the request in a DescribeQueries operation.

        • queryId (string) --

          The unique ID number of this query.

        • queryString (string) --

          The query string used in this query.

        • status (string) --

          The status of this query. Possible values are Cancelled , Complete , Failed , Running , Scheduled , and Unknown .

        • createTime (integer) --

          The date and time that this query was created.

        • logGroupName (string) --

          The name of the log group scanned by this query.

    • NextToken (string) --

      A token to resume pagination.

class CloudWatchLogs.Paginator.DescribeResourcePolicies
paginator = client.get_paginator('describe_resource_policies')
paginate(**kwargs)

Creates an iterator that will paginate through responses from CloudWatchLogs.Client.describe_resource_policies().

See also: AWS API Documentation

Request Syntax

response_iterator = paginator.paginate(
    PaginationConfig={
        'MaxItems': 123,
        'PageSize': 123,
        'StartingToken': 'string'
    }
)
Parameters
PaginationConfig (dict) --

A dictionary that provides parameters to control pagination.

  • MaxItems (integer) --

    The total number of items to return. If the total number of items available is more than the value specified in max-items then a NextToken will be provided in the output that you can use to resume pagination.

  • PageSize (integer) --

    The size of each page.

  • StartingToken (string) --

    A token to specify where to start paginating. This is the NextToken from a previous response.

Return type
dict
Returns
Response Syntax
{
    'resourcePolicies': [
        {
            'policyName': 'string',
            'policyDocument': 'string',
            'lastUpdatedTime': 123
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --
    • resourcePolicies (list) --

      The resource policies that exist in this account.

      • (dict) --

        A policy enabling one or more entities to put logs to a log group in this account.

        • policyName (string) --

          The name of the resource policy.

        • policyDocument (string) --

          The details of the policy.

        • lastUpdatedTime (integer) --

          Timestamp showing when this policy was last updated, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

    • NextToken (string) --

      A token to resume pagination.

class CloudWatchLogs.Paginator.DescribeSubscriptionFilters
paginator = client.get_paginator('describe_subscription_filters')
paginate(**kwargs)

Creates an iterator that will paginate through responses from CloudWatchLogs.Client.describe_subscription_filters().

See also: AWS API Documentation

Request Syntax

response_iterator = paginator.paginate(
    logGroupName='string',
    filterNamePrefix='string',
    PaginationConfig={
        'MaxItems': 123,
        'PageSize': 123,
        'StartingToken': 'string'
    }
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group.

  • filterNamePrefix (string) -- The prefix to match. If you don't specify a value, no prefix filter is applied.
  • PaginationConfig (dict) --

    A dictionary that provides parameters to control pagination.

    • MaxItems (integer) --

      The total number of items to return. If the total number of items available is more than the value specified in max-items then a NextToken will be provided in the output that you can use to resume pagination.

    • PageSize (integer) --

      The size of each page.

    • StartingToken (string) --

      A token to specify where to start paginating. This is the NextToken from a previous response.

Return type

dict

Returns

Response Syntax

{
    'subscriptionFilters': [
        {
            'filterName': 'string',
            'logGroupName': 'string',
            'filterPattern': 'string',
            'destinationArn': 'string',
            'roleArn': 'string',
            'distribution': 'Random'|'ByLogStream',
            'creationTime': 123
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --

    • subscriptionFilters (list) --

      The subscription filters.

      • (dict) --

        Represents a subscription filter.

        • filterName (string) --

          The name of the subscription filter.

        • logGroupName (string) --

          The name of the log group.

        • filterPattern (string) --

          A symbolic description of how CloudWatch Logs should interpret the data in each log event. For example, a log event can contain timestamps, IP addresses, strings, and so on. You use the filter pattern to specify what to look for in the log event message.

        • destinationArn (string) --

          The Amazon Resource Name (ARN) of the destination.

        • roleArn (string) --

        • distribution (string) --

          The method used to distribute log data to the destination, which can be either random or grouped by log stream.

        • creationTime (integer) --

          The creation time of the subscription filter, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

    • NextToken (string) --

      A token to resume pagination.

class CloudWatchLogs.Paginator.FilterLogEvents
paginator = client.get_paginator('filter_log_events')
paginate(**kwargs)

Creates an iterator that will paginate through responses from CloudWatchLogs.Client.filter_log_events().

See also: AWS API Documentation

Request Syntax

response_iterator = paginator.paginate(
    logGroupName='string',
    logGroupIdentifier='string',
    logStreamNames=[
        'string',
    ],
    logStreamNamePrefix='string',
    startTime=123,
    endTime=123,
    filterPattern='string',
    interleaved=True|False,
    unmask=True|False,
    PaginationConfig={
        'MaxItems': 123,
        'PageSize': 123,
        'StartingToken': 'string'
    }
)
Parameters
  • logGroupName (string) --

    [REQUIRED]

    The name of the log group to search.

    Note

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logGroupIdentifier (string) --

    Specify either the name or ARN of the log group to view log events from. If the log group is in a source account and you are using a monitoring account, you must use the log group ARN.

    If you specify values for both logGroupName and logGroupIdentifier , the action returns an InvalidParameterException error.

  • logStreamNames (list) --

    Filters the results to only logs from the log streams in this list.

    If you specify a value for both logStreamNamePrefix and logStreamNames , the action returns an InvalidParameterException error.

    • (string) --
  • logStreamNamePrefix (string) --

    Filters the results to include only events from log streams that have names starting with this prefix.

    If you specify a value for both logStreamNamePrefix and logStreamNames , but the value for logStreamNamePrefix does not match any log stream names specified in logStreamNames , the action returns an InvalidParameterException error.

  • startTime (integer) -- The start of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp before this time are not returned.
  • endTime (integer) -- The end of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC . Events with a timestamp later than this time are not returned.
  • filterPattern (string) --

    The filter pattern to use. For more information, see Filter and Pattern Syntax.

    If not provided, all the events are matched.

  • interleaved (boolean) --

    If the value is true, the operation attempts to provide responses that contain events from multiple log streams within the log group, interleaved in a single response. If the value is false, all the matched log events in the first log stream are searched first, then those in the next log stream, and so on.

    Important As of June 17, 2019, this parameter is ignored and the value is assumed to be true. The response from this operation always interleaves events from multiple log streams within a log group.
  • unmask (boolean) --

    Specify true to display the log event fields with all sensitive data unmasked and visible. The default is false .

    To use this operation with this parameter, you must be signed into an account with the logs:Unmask permission.

  • PaginationConfig (dict) --

    A dictionary that provides parameters to control pagination.

    • MaxItems (integer) --

      The total number of items to return. If the total number of items available is more than the value specified in max-items then a NextToken will be provided in the output that you can use to resume pagination.

    • PageSize (integer) --

      The size of each page.

    • StartingToken (string) --

      A token to specify where to start paginating. This is the NextToken from a previous response.

Return type

dict

Returns

Response Syntax

{
    'events': [
        {
            'logStreamName': 'string',
            'timestamp': 123,
            'message': 'string',
            'ingestionTime': 123,
            'eventId': 'string'
        },
    ],
    'searchedLogStreams': [
        {
            'logStreamName': 'string',
            'searchedCompletely': True|False
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --

    • events (list) --

      The matched events.

      • (dict) --

        Represents a matched event.

        • logStreamName (string) --

          The name of the log stream to which this event belongs.

        • timestamp (integer) --

          The time the event occurred, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • message (string) --

          The data contained in the log event.

        • ingestionTime (integer) --

          The time the event was ingested, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC .

        • eventId (string) --

          The ID of the event.

    • searchedLogStreams (list) --

      Important As of May 15, 2020, this parameter is no longer supported. This parameter returns an empty list.

      Indicates which log streams have been searched and whether each has been searched completely.

      • (dict) --

        Represents the search status of a log stream.

        • logStreamName (string) --

          The name of the log stream.

        • searchedCompletely (boolean) --

          Indicates whether all the events in this log stream were searched.

    • NextToken (string) --

      A token to resume pagination.