You can use the get_metric_data API to retrieve CloudWatch metric values. The operation can also include a CloudWatch Metrics Insights query, and one or more metric math functions.
See https://www.paws-r-sdk.com/docs/cloudwatch_get_metric_data/ for full documentation.
cloudwatch_get_metric_data(
MetricDataQueries,
StartTime,
EndTime,
NextToken = NULL,
ScanBy = NULL,
MaxDatapoints = NULL,
LabelOptions = NULL
)[required] The metric queries to be returned. A single
get_metric_data call can include as many
as 500 MetricDataQuery structures. Each of these structures can
specify either a metric to retrieve, a Metrics Insights query, or a math
expression to perform on retrieved data.
[required] The time stamp indicating the earliest data to be returned.
The value specified is inclusive; results include data points with the specified time stamp.
CloudWatch rounds the specified time stamp as follows:
Start time less than 15 days ago - Round down to the nearest whole minute. For example, 12:32:34 is rounded down to 12:32:00.
Start time between 15 and 63 days ago - Round down to the nearest 5-minute clock interval. For example, 12:32:34 is rounded down to 12:30:00.
Start time greater than 63 days ago - Round down to the nearest 1-hour clock interval. For example, 12:32:34 is rounded down to 12:00:00.
If you set Period to 5, 10, or 30, the start time of your request is
rounded down to the nearest time that corresponds to even 5-, 10-, or
30-second divisions of a minute. For example, if you make a query at
(HH:mm:ss) 01:05:23 for the previous 10-second period, the start time of
your request is rounded down and you receive data from 01:05:10 to
01:05:20. If you make a query at 15:07:17 for the previous 5 minutes of
data, using a period of 5 seconds, you receive data timestamped between
15:02:15 and 15:07:15.
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 than setting 12:07 or 12:29 as the StartTime.
[required] The time stamp indicating the latest data to be returned.
The value specified is exclusive; results include data points up to the specified time stamp.
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 than setting 12:07 or 12:29 as the EndTime.
Include this value, if it was returned by the previous
get_metric_data operation, to get the
next set of data points.
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.
If you omit this parameter, the default of TimestampDescending is
used.
The maximum number of data points the request should return before paginating. If you omit this, the default of 100,800 is used.
This structure includes the Timezone parameter, which you can use to
specify your time zone so that the labels of returned data display the
correct time for your time zone.