Modifying a Topic
Function
This API is used to modify a topic.
Calling Method
For details, see Calling APIs.
URI
PUT /v2/{project_id}/instances/{instance_id}/topics/{topic}
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
project_id |
Yes |
String |
Project ID. For details, see Obtaining a Project ID. |
instance_id |
Yes |
String |
Instance ID. |
topic |
Yes |
String |
Topic name. |
Request Parameters
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
read_queue_num |
No |
Number |
Total number of read queues. |
write_queue_num |
No |
Number |
Total number of write queues. |
permission |
No |
String |
Permissions. |
Response Parameters
None
Example Requests
Changing a specified topic's total read queues to 3 and total write queues to 3
PUT https://{endpoint}/v2/{project_id}/instances/{instance_id}/topics/{topic} { "read_queue_num" : 3, "write_queue_num" : 3, "permission" : "all" }
Example Responses
None
SDK Sample Code
The SDK sample code is as follows.
Changing a specified topic's total read queues to 3 and total write queues to 3
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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.*; public class UpdateTopicSolution { 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(); UpdateTopicRequest request = new UpdateTopicRequest(); request.withInstanceId("{instance_id}"); request.withTopic("{topic}"); UpdateTopicReq body = new UpdateTopicReq(); body.withPermission(UpdateTopicReq.PermissionEnum.fromValue("all")); body.withWriteQueueNum(java.math.BigDecimal.valueOf(3)); body.withReadQueueNum(java.math.BigDecimal.valueOf(3)); request.withBody(body); try { UpdateTopicResponse response = client.updateTopic(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()); } } } |
Changing a specified topic's total read queues to 3 and total write queues to 3
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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 = UpdateTopicRequest() request.instance_id = "{instance_id}" request.topic = "{topic}" request.body = UpdateTopicReq( permission="all", write_queue_num=3, read_queue_num=3 ) response = client.update_topic(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg) |
Changing a specified topic's total read queues to 3 and total write queues to 3
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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.UpdateTopicRequest{} request.InstanceId = "{instance_id}" request.Topic = "{topic}" permissionUpdateTopicReq:= model.GetUpdateTopicReqPermissionEnum().ALL writeQueueNumUpdateTopicReq:= float32(3) readQueueNumUpdateTopicReq:= float32(3) request.Body = &model.UpdateTopicReq{ Permission: &permissionUpdateTopicReq, WriteQueueNum: &writeQueueNumUpdateTopicReq, ReadQueueNum: &readQueueNumUpdateTopicReq, } response, err := client.UpdateTopic(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 |
---|---|
204 |
The operation is successful. |
Error Codes
See Error Codes.
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