CKafka - Topic Monitoring API

Last updated: 2020-05-15 17:42:31

1. API Description

API: GetMonitorData
Domain name for API request: monitor.tencentcloudapi.com

This API is used to get the monitoring data of a Tencent Cloud product by passing in the product's namespace, object dimension, and monitoring metrics.

API call rate limit: 20 calls/second (1,200 calls/minute). A single request can get the data of up to 10 instances and up to 1,440 data points.

This API may fail due to the rate limit if you need to call many metrics and objects. We recommend spreading call requests across a period of time.

To query the monitoring data of a CKafka topic, use the following input parameters:
&Namespace=QCE/CKAFKA
&Instances.N.Dimensions.0.Name=instanceId
&Instances.N.Dimensions.0.Value=Instance ID
&Instances.N.Dimensions.1.Name=topicId
&Instances.N.Dimensions.1.Value=Topic ID

2. Input Parameters

The list below contains only the API request parameters and some common request parameters. Common request parameters need to be added when a call is made. For more information, see Common Params.

2.1 Input parameters

2.1.1. Overview of input parameters

Parameter Name Required Type Description
Action Yes String Common parameter. Value: GetMonitorData
Version Yes String Common parameter. Value: 2018-07-24
Region No String Common parameter, indicating the region of the instance to be queried. For supported regions, see the list of regions supported by Ckafka
Namespace Yes String Namespace. Each Tencent Cloud product has a namespace, such as QCE/CKAFKA for Ckafka topics. This value must be capitalized for API 3.0
MetricName Yes String Metric name. For more information, see section 2.2
Instances.N Yes Array of Instance Combination of instance object dimensions
Period No Integer Statistical period for monitoring data in seconds. Default value: 300
StartTime No Timestamp Start time, such as "2016-01-01 10:25:00". The default value is "00:00:00" of the current day
EndTime No Timestamp End time, which is the current time by default. endTime cannot be earlier than startTime

2.1.2. Overview of parameters in each dimension

Parameter Name Dimension Name Dimension Description Format
Instances.N.Dimensions.0.Name instanceId instanceId Enter a string-type dimension name, such as instanceId
Instances.N.Dimensions.0.Value instanceId CKafka instance ID Enter a specific instance ID, such as ckafka-test
Instances.N.Dimensions.1.Name topicId topicId Enter a string-type dimension name, such as topicId
Instances.N.Dimensions.1.Value topicId Instance topic ID Enter a specific topic ID, such as topic-test

2.2. Metric name

The statistical granularity (period) and dimension (dimension) may vary by metric. The DescribeBaseMetrics API can be used to get the period and dimension supported by each metric.

Metric Name Description Unit Dimension
CtopicProFlow Production traffic in the topic MB instanceId, topicId
CtopicConFlow Consumption traffic in the topic MB instanceId, topicId
CtopicMsgHeap Message heap in the topic MB instanceId, topicId
CtopicProCount Messages produced by the topic - instanceId, topicId
CtopicProReqCount Production requests in the topic - instanceId, topicId
CtopicConReqCount Consumption requests in the topic - instanceId, topicId
CtopicMsgCount Persistent messages in the topic - instanceId, topicId
CtopicConCount Messages consumed by the topic - instanceId, topicId

3. Output Parameters

Parameter Name Type Description
MetricName String Monitoring metric
StartTime Timestamp Data point start time
EndTime Timestamp Data point end time
Period Integer Statistical period
DataPoints Array of PointsObject Monitoring data list
RequestId String Unique request ID. Each request returns a unique ID. RequestId is required to troubleshoot issues

4. Error Codes

Error Code Error Description Error Message
-502 Resource does not exist OperationDenied.SourceNotExists
-503 Incorrect request parameter InvalidParameter
-505 Missing parameter InvalidParameter.MissingParameter
-507 Limit exceeded OperationDenied.ExceedLimit
-509 Incorrect dimension combination InvalidParameter.DimensionGroupError
-513 DB operation failed InternalError.DBoperationFail

5. Samples

Sample 1

This example shows you how to get the monitoring data for the production traffic of one CKafka topic using a statistical period of 60 seconds for a specified length of time.

Sample input code

https://monitor.tencentcloudapi.com/?Action=GetMonitorData
&Namespace=QCE/CKAFKA
&MetricName=CtopicProFlow
&Period=60
&StartTime=2019-05-08T16:40:00+08:00
&EndTime=2019-05-08T16:45:00+08:00
&Instances.0.Dimensions.0.Name=instanceId
&Instances.0.Dimensions.0.Value=ckafka-test
&Instances.0.Dimensions.1.Name=topicId
&Instances.0.Dimensions.1.Value=topic-test
&<Common request parameters>

Sample output code

{
  "Response": {
    "StartTime": "2019-05-08 16:40:00",
    "EndTime": "2019-05-08 16:45:00",
    "Period": 60,
    "MetricName": "CtopicProFlow",
    "DataPoints": [
      {
        "Dimensions": [
          {
            "Name": "instanceId",
            "Value": "ckafka-test"
          },
          {
            "Name": "topicId",
            "Value": "topic-test"
          }
        ],
        "Timestamps": [
          1558429200,
          1558429260,
          1558429320,
          1558429380,
          1558429440,
          1558429500
        ],
        "Values": [
          18.213,
          18.219,
          17.911,
          18.243,
          17.916,
          17.939
        ]
      }
    ],
    "RequestId": "68a1ffe1-b314-4da8-8f8c-cdcfcff1d3fd"
  }
}

Sample 2

This example shows you how to get the monitoring data for the production traffic of multiple CKafka topics using a statistical period of 60 seconds for a specified length of time.

Sample input code

https://monitor.tencentcloudapi.com/?Action=GetMonitorData
&Namespace=QCE/CKAFKA
&MetricName=CtopicProFlow
&Period=60
&StartTime=2019-05-08T16:40:00+08:00
&EndTime=2019-05-08T16:45:00+08:00
&Instances.0.Dimensions.0.Name=instanceId
&Instances.0.Dimensions.0.Value=ckafka-test1
&Instances.0.Dimensions.1.Name=topicId
&Instances.0.Dimensions.1.Value=topic-test1
&Instances.1.Dimensions.0.Name=instanceId
&Instances.1.Dimensions.0.Value=ckafka-test2
&Instances.1.Dimensions.1.Name=topicId
&Instances.1.Dimensions.1.Value=topic-test2
&<Common request parameters>

Sample output code

{
  "Response": {
    "StartTime": "2019-05-08 16:40:00",
    "EndTime": "2019-05-08 16:45:00",
    "Period": 60,
    "MetricName": "CtopicProFlow",
    "DataPoints": [
      {
        "Dimensions": [
          {
            "Name": "instanceId",
            "Value": "ckafka-test1"
          },
          {
            "Name": "topicId",
            "Value": "topic-test1"
          }
        ],
        "Timestamps": [
          1558429200,
          1558429260,
          1558429320,
          1558429380,
          1558429440,
          1558429500
        ],
        "Values": [
          18.213,
          18.219,
          17.911,
          18.243,
          17.916,
          17.939
        ]
      },
      {
        "Dimensions": [
          {
            "Name": "instanceId",
            "Value": "ckafka-test2"
          },
          {
            "Name": "topicId",
            "Value": "topic-test2"
          }
        ],
        "Timestamps": [
          1558429200,
          1558429260,
          1558429320,
          1558429380,
          1558429440,
          1558429500
        ],
        "Values": [
          18.213,
          18.219,
          17.911,
          18.243,
          17.916,
          17.939
        ]
      }
    ],
    "RequestId": "68a1ffe1-b314-4da8-8f8c-cdcfcff1d3fd"
  }
}