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[ aws . cloudwatch ]

get-metric-data

Description

You can use the GetMetricData API to retrieve as many as 100 different metrics in a single request, with a total of as many as 100,800 datapoints. You can also optionally perform math expressions on the values of the returned statistics, to create new time series that represent new insights into your data. For example, using Lambda metrics, you could divide the Errors metric by the Invocations metric to get an error rate time series. For more information about metric math expressions, see Metric Math Syntax and Functions in the Amazon CloudWatch User Guide .

Calls to the GetMetricData API have a different pricing structure than calls to GetMetricStatistics . For more information about pricing, see Amazon CloudWatch Pricing .

Amazon CloudWatch retains metric data as follows:

  • Data points with a period of less than 60 seconds are available for 3 hours. These data points are high-resolution metrics and are available only for custom metrics that have been defined with a StorageResolution of 1.
  • Data points with a period of 60 seconds (1-minute) are available for 15 days.
  • Data points with a period of 300 seconds (5-minute) are available for 63 days.
  • Data points with a period of 3600 seconds (1 hour) are available for 455 days (15 months).

Data points that are initially published with a shorter period are aggregated together for long-term storage. For example, if you collect data using a period of 1 minute, the data remains available for 15 days with 1-minute resolution. After 15 days, this data is still available, but is aggregated and retrievable only with a resolution of 5 minutes. After 63 days, the data is further aggregated and is available with a resolution of 1 hour.

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.

get-metric-data 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: MetricDataResults

Synopsis

  get-metric-data
--metric-data-queries <value>
--start-time <value>
--end-time <value>
[--scan-by <value>]
[--cli-input-json <value>]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]

Options

--metric-data-queries (list)

The metric queries to be returned. A single GetMetricData call can include as many as 100 MetricDataQuery structures. Each of these structures can specify either a metric to retrieve, or a math expression to perform on retrieved data.

JSON Syntax:

[
  {
    "Id": "string",
    "MetricStat": {
      "Metric": {
        "Namespace": "string",
        "MetricName": "string",
        "Dimensions": [
          {
            "Name": "string",
            "Value": "string"
          }
          ...
        ]
      },
      "Period": integer,
      "Stat": "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"
    },
    "Expression": "string",
    "Label": "string",
    "ReturnData": true|false
  }
  ...
]

--start-time (timestamp)

The time stamp indicating the earliest data to be returned.

For better performance, specify StartTime and EndTime values that align with the value of the metric's Period and sync up with the beginning and end of an hour. For example, if the Period of a metric is 5 minutes, specifying 12:05 or 12:30 as StartTime can get a faster response from CloudWatch then setting 12:07 or 12:29 as the StartTime .

--end-time (timestamp)

The time stamp indicating the latest data to be returned.

For better performance, specify StartTime and EndTime values that align with the value of the metric's Period and sync up with the beginning and end of an hour. For example, if the Period of a metric is 5 minutes, specifying 12:05 or 12:30 as EndTime can get a faster response from CloudWatch then setting 12:07 or 12:29 as the EndTime .

--scan-by (string)

The order in which data points should be returned. TimestampDescending returns the newest data first and paginates when the MaxDatapoints limit is reached. TimestampAscending returns the oldest data first and paginates when the MaxDatapoints limit is reached.

Possible values:

  • TimestampDescending
  • TimestampAscending

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI 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.

--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. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.

Output

MetricDataResults -> (list)

The metrics that are returned, including the metric name, namespace, and dimensions.

(structure)

A GetMetricData call returns an array of MetricDataResult structures. Each of these structures includes the data points for that metric, along with the timestamps of those data points and other identifying information.

Id -> (string)

The short name you specified to represent this metric.

Label -> (string)

The human-readable label associated with the data.

Timestamps -> (list)

The timestamps for the data points, formatted in Unix timestamp format. The number of timestamps always matches the number of values and the value for Timestamps[x] is Values[x].

(timestamp)

Values -> (list)

The data points for the metric corresponding to Timestamps . The number of values always matches the number of timestamps and the timestamp for Values[x] is Timestamps[x].

(double)

StatusCode -> (string)

The status of the returned data. Complete indicates that all data points in the requested time range were returned. PartialData means that an incomplete set of data points were returned. You can use the NextToken value that was returned and repeat your request to get more data points. NextToken is not returned if you are performing a math expression. InternalError indicates that an error occurred. Retry your request using NextToken , if present.

Messages -> (list)

A list of messages with additional information about the data returned.

(structure)

A message returned by the GetMetricData API, including a code and a description.

Code -> (string)

The error code or status code associated with the message.

Value -> (string)

The message text.

NextToken -> (string)

A token that marks the next batch of returned results.