更新时间:2025-07-18 GMT+08:00
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修改主题

功能介绍

修改主题。

调用方法

请参见如何调用API

URI

PUT /v2/{project_id}/instances/{instance_id}/topics/{topic}

表1 路径参数

参数

是否必选

参数类型

描述

project_id

String

项目ID,获取方式请参见获取项目ID

instance_id

String

实例ID。

topic

String

主题名称。

请求参数

表2 请求Body参数

参数

是否必选

参数类型

描述

read_queue_num

Number

参数解释

总读队列个数。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

write_queue_num

Number

参数解释

总写队列个数。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

permission

String

参数解释

权限。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

queues

Array of UpdateTopicQueueEntity objects

参数解释

队列。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

topic_desc

String

参数解释

Topic描述。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

表3 UpdateTopicQueueEntity

参数

是否必选

参数类型

描述

broker

String

参数解释

Broker名称。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

read_queue_num

Number

参数解释

读队列个数。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

write_queue_num

Number

参数解释

写队列个数。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

响应参数

状态码:204

表4 响应Body参数

参数

参数类型

描述

job_id

String

参数解释

规格变更任务ID。

取值范围

不涉及。

请求示例

修改指定主题的参数,总读队列个数修改为3,总写队列个数修改为3。

PUT https://{endpoint}/v2/{project_id}/instances/{instance_id}/topics/{topic}

{
  "read_queue_num" : 3,
  "write_queue_num" : 3,
  "permission" : "all"
}

响应示例

状态码:204

修改主题成功。

{
  "job_id" : "93b94287-728d-4bb1-a158-cb66cb0854e7"
}

SDK代码示例

SDK代码示例如下。

修改指定主题的参数,总读队列个数修改为3,总写队列个数修改为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());
        }
    }
}

修改指定主题的参数,总读队列个数修改为3,总写队列个数修改为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)

修改指定主题的参数,总读队列个数修改为3,总写队列个数修改为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)
    }
}

更多编程语言的SDK代码示例,请参见API Explorer的代码示例页签,可生成自动对应的SDK代码示例。

状态码

状态码

描述

204

修改主题成功。

错误码

请参见错误码

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