[ aws . logs ]

describe-log-streams

Description

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.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

describe-log-streams is a paginated operation. Multiple API calls may be issued in order to retrieve the entire data set of results. You can disable pagination by providing the --no-paginate argument. When using --output text and the --query argument on a paginated response, the --query argument must extract data from the results of the following query expressions: logStreams

Synopsis

  describe-log-streams
--log-group-name <value>
[--log-stream-name-prefix <value>]
[--order-by <value>]
[--descending | --no-descending]
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]

Options

--log-group-name (string)

The name of the log group.

--log-stream-name-prefix (string)

The prefix to match.

If orderBy is LastEventTime , you cannot specify this parameter.

--order-by (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.

Possible values:

• LogStreamName

• LastEventTime

--descending | --no-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.

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--starting-token (string)

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

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command’s output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command’s output. If the total number of items available is more than the value specified, a NextToken is provided in the command’s output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

See ‘aws help’ for descriptions of global parameters.

Examples

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

The following command shows all log streams starting with the prefix 2015 in the log group my-logs:

aws logs describe-log-streams --log-group-name my-logs --log-stream-name-prefix 2015

Output:

{
    "logStreams": [
        {
            "creationTime": 1433189871774,
            "arn": "arn:aws:logs:us-west-2:0123456789012:log-group:my-logs:log-stream:20150531",
            "logStreamName": "20150531",
            "storedBytes": 0
        },
        {
            "creationTime": 1433189873898,
            "arn": "arn:aws:logs:us-west-2:0123456789012:log-group:my-logs:log-stream:20150601",
            "logStreamName": "20150601",
            "storedBytes": 0
        }
    ]
}

Output

logStreams -> (list)

The log streams.

(structure)

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 -> (long)

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

firstEventTimestamp -> (long)

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

lastEventTimestamp -> (long)

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 -> (long)

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 -> (long)

The number of bytes stored.

Important: On June 17, 2019, this parameter was deprecated 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.