Submitting Checkpoints
Function
This API is used to submit checkpoints.
Calling Method
For details, see Calling APIs.
URI
POST /v2/{project_id}/checkpoints
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
project_id |
Yes |
String |
Project ID |
Request Parameters
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
X-Auth-Token |
Yes |
String |
User token It can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is the user token. |
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
app_name |
Yes |
String |
Name of the app, which is the unique identifier of a user data consumption program. |
checkpoint_type |
Yes |
String |
Type of the checkpoint.
Enumeration values:
|
stream_name |
Yes |
String |
Name of the stream |
partition_id |
Yes |
String |
Partition identifier of the stream.Two partition ID formats are available:- shardId-0000000000- 0For example, if a stream has three partitions, the partition IDs are 0, 1, and 2, or shardId-0000000000, shardId-0000000001, and shardId-0000000002. |
sequence_number |
Yes |
String |
Sequence number to be submitted, which is used to record the consumption checkpoint of the stream. Ensure that the sequence number is within the valid range. |
metadata |
No |
String |
Metadata information of the consumer application. The metadata information can contain a maximum of 1,000 characters. Maximum: 1000 |
Response Parameters
None
Example Requests
Submitting Checkpoints
POST https://{Endpoint}/v2/{project_id}/checkpoints { "stream_name" : "newstream", "app_name" : "newapp", "partition_id" : "0", "sequence_number" : "2", "checkpoint_type" : "LAST_READ" }
Example Responses
None
SDK Sample Code
The SDK sample code is as follows.
Java
Submitting Checkpoints
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package com.huaweicloud.sdk.test; import com.huaweicloud.sdk.core.auth.ICredential; import com.huaweicloud.sdk.core.auth.BasicCredentials; import com.huaweicloud.sdk.core.exception.ConnectionException; import com.huaweicloud.sdk.core.exception.RequestTimeoutException; import com.huaweicloud.sdk.core.exception.ServiceResponseException; import com.huaweicloud.sdk.dis.v2.region.DisRegion; import com.huaweicloud.sdk.dis.v2.*; import com.huaweicloud.sdk.dis.v2.model.*; public class CommitCheckpointSolution { public static void main(String[] args) { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK"); ICredential auth = new BasicCredentials() .withAk(ak) .withSk(sk); DisClient client = DisClient.newBuilder() .withCredential(auth) .withRegion(DisRegion.valueOf("<YOUR REGION>")) .build(); CommitCheckpointRequest request = new CommitCheckpointRequest(); CommitCheckpointReq body = new CommitCheckpointReq(); body.withSequenceNumber("2"); body.withPartitionId("0"); body.withStreamName("newstream"); body.withCheckpointType(CommitCheckpointReq.CheckpointTypeEnum.fromValue("LAST_READ")); body.withAppName("newapp"); request.withBody(body); try { CommitCheckpointResponse response = client.commitCheckpoint(request); System.out.println(response.toString()); } catch (ConnectionException e) { e.printStackTrace(); } catch (RequestTimeoutException e) { e.printStackTrace(); } catch (ServiceResponseException e) { e.printStackTrace(); System.out.println(e.getHttpStatusCode()); System.out.println(e.getRequestId()); System.out.println(e.getErrorCode()); System.out.println(e.getErrorMsg()); } } } |
Python
Submitting Checkpoints
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# coding: utf-8 import os from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkdis.v2.region.dis_region import DisRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkdis.v2 import * if __name__ == "__main__": # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] credentials = BasicCredentials(ak, sk) client = DisClient.new_builder() \ .with_credentials(credentials) \ .with_region(DisRegion.value_of("<YOUR REGION>")) \ .build() try: request = CommitCheckpointRequest() request.body = CommitCheckpointReq( sequence_number="2", partition_id="0", stream_name="newstream", checkpoint_type="LAST_READ", app_name="newapp" ) response = client.commit_checkpoint(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg) |
Go
Submitting Checkpoints
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package main import ( "fmt" "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic" dis "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dis/v2" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dis/v2/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dis/v2/region" ) func main() { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak := os.Getenv("CLOUD_SDK_AK") sk := os.Getenv("CLOUD_SDK_SK") auth := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). Build() client := dis.NewDisClient( dis.DisClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.CommitCheckpointRequest{} request.Body = &model.CommitCheckpointReq{ SequenceNumber: "2", PartitionId: "0", StreamName: "newstream", CheckpointType: model.GetCommitCheckpointReqCheckpointTypeEnum().LAST_READ, AppName: "newapp", } response, err := client.CommitCheckpoint(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } } |
More
For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.
Status Codes
Status Code |
Description |
---|---|
201 |
Normal response |
Error Codes
See Error Codes.
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