Request Syntax Request Parameters Response Syntax Response Elements Errors Examples See Also

ListAvailableResourceMetrics

Retrieve metrics of the specified types that can be queried for a specified DB instance.

Request Syntax


{
   "Identifier": "string",
   "MaxResults": number,
   "MetricTypes": [ "string" ],
   "NextToken": "string",
   "ServiceType": "string"
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

Note

In the following list, the required parameters are described first.

Identifier

An immutable identifier for a data source that is unique within an AWS Region. Performance Insights gathers metrics from this data source. To use an Amazon RDS DB instance as a data source, specify its DbiResourceId value. For example, specify db-ABCDEFGHIJKLMNOPQRSTU1VWZ.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 256.

Pattern: ^[a-zA-Z0-9-]+$

Required: Yes

MetricTypes

The types of metrics to return in the response. Valid values in the array include the following:

os (OS counter metrics) - All engines
db (DB load metrics) - All engines except for Amazon DocumentDB
db.sql.stats (per-SQL metrics) - All engines except for Amazon DocumentDB
db.sql_tokenized.stats (per-SQL digest metrics) - All engines except for Amazon DocumentDB

Type: Array of strings

Length Constraints: Minimum length of 0. Maximum length of 256.

Pattern: ^[a-zA-Z0-9-_\.:/*)( ]+$

Required: Yes

ServiceType

The AWS service for which Performance Insights returns metrics.

Type: String

Valid Values: RDS | DOCDB

Required: Yes

MaxResults

The maximum number of items to return. If the MaxRecords value is less than the number of existing items, the response includes a pagination token.

Type: Integer

Valid Range: Minimum value of 0. Maximum value of 25.

Required: No

NextToken

An optional pagination token provided by a previous request. If this parameter is specified, the response includes only records beyond the token, up to the value specified by MaxRecords.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 8192.

Pattern: ^[a-zA-Z0-9_=-]+$

Required: No

Response Syntax


{
   "Metrics": [ 
      { 
         "Description": "string",
         "Metric": "string",
         "Unit": "string"
      }
   ],
   "NextToken": "string"
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

Metrics

An array of metrics available to query. Each array element contains the full name, description, and unit of the metric.

Type: Array of ResponseResourceMetric objects

NextToken

A pagination token that indicates the response didn’t return all available records because MaxRecords was specified in the previous request. To get the remaining records, specify NextToken in a separate request with this value.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 8192.

Pattern: ^[a-zA-Z0-9_=-]+$

Errors

For information about the errors that are common to all actions, see Common Errors.

InternalServiceError

The request failed due to an unknown error.

HTTP Status Code: 500

InvalidArgumentException

One of the arguments provided is invalid for this request.

HTTP Status Code: 400

NotAuthorizedException

The user is not authorized to perform this request.

HTTP Status Code: 400

Examples

List specified metrics

The following example requests the metrics for metric types os and db.

Sample Request


POST / HTTP/1.1
Host: <Hostname>
Accept-Encoding: identity
X-Amz-Target: PerformanceInsightsv20180227.ListAvailableResourceMetrics
Content-Type: application/x-amz-json-1.1
User-Agent: <UserAgentString>
X-Amz-Date: <Date>
Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=<Headers>, Signature=<Signature>
Content-Length: <PayloadSizeBytes>

{
    "ServiceType": "RDS",
    "Identifier": "db-ABC1DEFGHIJKL2MNOPQRSTUV3W",
    "MetricTypes": [ "os", "db" ]
}

Sample Response


HTTP/1.1 200 OK
Content-Type: application/x-amz-json-1.1
Date: <Date>
x-amzn-RequestId: <RequestId>
Content-Length: <PayloadSizeBytes>
Connection: keep-alive

{    
    "Metrics": [        
        {
            "Description": "The number of virtual CPUs for the DB instance",
            "Metric": "os.general.numVCPUs",
            "Unit": "vCPUs"
        },
        ......,
        {
            "Description": "Time spent reading data file blocks by backends in this instance",
            "Metric": "db.IO.read_latency",
            "Unit": "Milliseconds per block"
        },
        ......
    ]
}