Resending Dead Letter Messages
Function
Resending dead letter messages
Calling Method
For details, see Calling APIs.
URI
POST /v2/{engine}/{project_id}/instances/{instance_id}/messages/deadletter-resend
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
engine |
Yes |
String |
Message engine. |
project_id |
Yes |
String |
Project ID. For details, see Obtaining a Project ID. |
instance_id |
Yes |
String |
Instance ID. |
Request Parameters
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
topic |
No |
String |
Topic. |
msg_id_list |
No |
Array of strings |
Message list. |
Response Parameters
Status code: 200
Parameter |
Type |
Description |
---|---|---|
resend_results |
Array of resend_results objects |
Result of resending a dead letter message. |
Example Requests
Resending dead letter messages
POST https://{endpoint}/v2/{engine}/{project_id}/instances/{instance_id}/messages/deadletter-resend { "topic" : "%DLQ%group1", "msg_id_list" : [ "id1" ] }
Example Responses
Status code: 200
Dead letter messages resent.
{ "resend_results" : [ { "msg_id" : "C0A8149E0000277600000000000B6835", "error_code" : "DMS.00000000", "error_message" : "Success." } ] }
SDK Sample Code
The SDK sample code is as follows.
Resending dead letter messages
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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.rocketmq.v2.region.RocketMQRegion; import com.huaweicloud.sdk.rocketmq.v2.*; import com.huaweicloud.sdk.rocketmq.v2.model.*; import java.util.List; import java.util.ArrayList; public class SendDlqMessageSolution { 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"); String projectId = "{project_id}"; ICredential auth = new BasicCredentials() .withProjectId(projectId) .withAk(ak) .withSk(sk); RocketMQClient client = RocketMQClient.newBuilder() .withCredential(auth) .withRegion(RocketMQRegion.valueOf("<YOUR REGION>")) .build(); SendDlqMessageRequest request = new SendDlqMessageRequest(); request.withEngine(SendDlqMessageRequest.EngineEnum.fromValue("{engine}")); request.withInstanceId("{instance_id}"); DeadletterResendReq body = new DeadletterResendReq(); List<String> listbodyMsgIdList = new ArrayList<>(); listbodyMsgIdList.add("id1"); body.withMsgIdList(listbodyMsgIdList); body.withTopic("%DLQ%group1"); request.withBody(body); try { SendDlqMessageResponse response = client.sendDlqMessage(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()); } } } |
Resending dead letter messages
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# coding: utf-8 import os from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkrocketmq.v2.region.rocketmq_region import RocketMQRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkrocketmq.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"] projectId = "{project_id}" credentials = BasicCredentials(ak, sk, projectId) client = RocketMQClient.new_builder() \ .with_credentials(credentials) \ .with_region(RocketMQRegion.value_of("<YOUR REGION>")) \ .build() try: request = SendDlqMessageRequest() request.engine = "{engine}" request.instance_id = "{instance_id}" listMsgIdListbody = [ "id1" ] request.body = DeadletterResendReq( msg_id_list=listMsgIdListbody, topic="%DLQ%group1" ) response = client.send_dlq_message(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg) |
Resending dead letter messages
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package main import ( "fmt" "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic" rocketmq "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/v2" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/v2/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/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") projectId := "{project_id}" auth := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). WithProjectId(projectId). Build() client := rocketmq.NewRocketMQClient( rocketmq.RocketMQClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.SendDlqMessageRequest{} request.Engine = model.GetSendDlqMessageRequestEngineEnum().ENGINE request.InstanceId = "{instance_id}" var listMsgIdListbody = []string{ "id1", } topicDeadletterResendReq:= "%DLQ%group1" request.Body = &model.DeadletterResendReq{ MsgIdList: &listMsgIdListbody, Topic: &topicDeadletterResendReq, } response, err := client.SendDlqMessage(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } } |
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 |
---|---|
200 |
Dead letter messages resent. |
Error Codes
See Error Codes.
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