Get CloudWatch metrics data for insights and analytics
POST /insights
Authorizations
Section titled “Authorizations ”Request Body required
Section titled “Request Body required ”object
This structure is used in both GetMetricData and PutMetricAlarm. The supported use of this structure is different for those two operations.
When used in GetMetricData, it indicates the metric data to return, and whether this call is just retrieving a batch set of data for one metric, or is performing a Metrics Insights query or a math expression. A single GetMetricData call can include up to 500 MetricDataQuery structures.
When used in PutMetricAlarm, it enables you to create an alarm based on a metric math expression. Each MetricDataQuery in the array specifies either a metric to retrieve, or a math expression to be performed on retrieved metrics. A single PutMetricAlarm call can include up to 20 MetricDataQuery structures in the array. The 20 structures can include as many as 10 structures that contain a MetricStat parameter to retrieve a metric, and as many as 10 structures that contain the Expression parameter to perform a math expression. Of those Expression structures, one must have true as the value for ReturnData. The result of this expression is the value the alarm watches.
Any expression used in a PutMetricAlarm operation must return a single time series. For more information, see Metric Math Syntax and Functions in the Amazon CloudWatch User Guide.
Some of the parameters of this structure also have different uses whether you are using this structure in a GetMetricData operation or a PutMetricAlarm operation. These differences are explained in the following parameter list.
object
A short name used to tie this object to the results in the response. This name must be unique within a single call to GetMetricData. If you are performing math expressions on this set of data, this name represents that data and can serve as a variable in the mathematical expression. The valid characters are letters, numbers, and underscore. The first character must be a lowercase letter.
This structure defines the metric to be returned, along with the statistics, period, and units.
object
Represents a specific metric.
object
The namespace of the metric.
The name of the metric. This is a required field.
The dimensions for the metric.
A dimension is a name/value pair that is part of the identity of a metric. Because dimensions are part of the unique identifier for a metric, whenever you add a unique name/value pair to one of your metrics, you are creating a new variation of that metric. For example, many Amazon EC2 metrics publish InstanceId as a dimension name, and the actual instance ID as the value for that dimension.
You can assign up to 30 dimensions to a metric.
object
The name of the dimension. Dimension names must contain only ASCII characters, must include at least one non-whitespace character, and cannot start with a colon (:). ASCII control characters are not supported as part of dimension names.
The value of the dimension. Dimension values must contain only ASCII characters and must include at least one non-whitespace character. ASCII control characters are not supported as part of dimension values.
The granularity, in seconds, of the returned data points. For metrics with regular resolution, a period can be as short as one minute (60 seconds) and must be a multiple of 60. For high-resolution metrics that are collected at intervals of less than one minute, the period can be 1, 5, 10, 20, 30, 60, or any multiple of 60. High-resolution metrics are those metrics stored by a PutMetricData call that includes a StorageResolution of 1 second.
If the StartTime parameter specifies a time stamp that is greater than 3 hours ago, you must specify the period as follows or no data points in that time range is returned:
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Start time between 3 hours and 15 days ago - Use a multiple of 60 seconds (1 minute).
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Start time between 15 and 63 days ago - Use a multiple of 300 seconds (5 minutes).
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Start time greater than 63 days ago - Use a multiple of 3600 seconds (1 hour).
The statistic to return. It can include any CloudWatch statistic or extended statistic.
This field can contain either a Metrics Insights query, or a metric math expression to be performed on the returned data. For more information about Metrics Insights queries, see Metrics Insights query components and syntax in the Amazon CloudWatch User Guide.
A math expression can use the Id of the other metrics or queries to refer to those metrics, and can also use the Id of other expressions to use the result of those expressions. For more information about metric math expressions, see Metric Math Syntax and Functions in the Amazon CloudWatch User Guide.
Within each MetricDataQuery object, you must specify either Expression or MetricStat but not both.
A human-readable label for this metric or expression. This is especially useful if this is an expression, so that you know what the value represents. If the metric or expression is shown in a CloudWatch dashboard widget, the label is shown. If Label is omitted, CloudWatch generates a default.
You can put dynamic expressions into a label, so that it is more descriptive. For more information, see Using Dynamic Labels.
When used in GetMetricData, this option indicates whether to return the timestamps and raw data values of this metric. If you are performing this call just to do math expressions and do not also need the raw data returned, you can specify false. If you omit this, the default of true is used.
When used in PutMetricAlarm, specify true for the one expression result to use as the alarm. For all other metrics and expressions in the same PutMetricAlarm operation, specify ReturnData as False.
The granularity, in seconds, of the returned data points. For metrics with regular resolution, a period can be as short as one minute (60 seconds) and must be a multiple of 60. For high-resolution metrics that are collected at intervals of less than one minute, the period can be 1, 5, 10, 20, 30, 60, or any multiple of 60. High-resolution metrics are those metrics stored by a PutMetricData operation that includes a StorageResolution of 1 second.
The ID of the account where the metrics are located.
If you are performing a GetMetricData operation in a monitoring account, use this to specify which account to retrieve this metric from.
If you are performing a PutMetricAlarm operation, use this to specify which account contains the metric that the alarm is watching.
object
Responses
Section titled “ Responses ”Successful response
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.
object
The short name you specified to represent this metric.
The human-readable label associated with the data.
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].
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].
A list of messages with additional information about the data returned.
A message returned by the GetMetricDataAPI, including a code and a description.
If a cross-Region GetMetricData operation fails with a code of Forbidden and a value of Authentication too complex to retrieve cross region data, you can correct the problem by running the GetMetricData operation in the same Region where the metric data is.
object
The error code or status code associated with the message.
The message text.
Bad Request
Unauthorized
Internal Server Error