# 创建Queue - CreateQueue #### 功能介绍 创建Queue。 #### 调用方法 请参见[如何调用API](https://support.huaweicloud.com/api-rabbitmq/rabbitmq-api-190611003.html)。 #### 授权信息 账号具备所有API的调用权限，如果使用账号下的IAM用户调用当前API，该IAM用户需具备调用API所需的权限。 - 如果使用角色与策略授权，具体权限要求请参见[权限和授权项](https://support.huaweicloud.com/api-rabbitmq/api-grant-policy.html)。 - 如果使用身份策略授权，需具备如下身份策略权限。 | 授权项 | 访问级别 | 资源类型（\*为必须） | 条件键 | 别名 | 依赖的授权项 | |:---|:---|:---|:---|:---|:---| | dms:amqpQueue:create | Write | rabbitmq \* | - g:ResourceTag/\ - g:EnterpriseProjectId | dms:instance:modify | - | | dms:amqpQueue:create | Write | amqpQueue \* | - | dms:instance:modify | - | #### URI PUT /v2/rabbitmq/{project_id}/instances/{instance_id}/vhosts/{vhost}/queues 表1路径参数 | 参数 | 是否必选 | 参数类型 | 描述 | |:---|:---|:---|:---| | project_id | 是 | String | 项目ID，获取方式请参见[获取项目ID](https://support.huaweicloud.com/api-rabbitmq/rabbitmq-api-190611012.html)。 | | instance_id | 是 | String | 实例ID。 | | vhost | 是 | String | vhost名称，名称中包含/时，需要将/替换为__F_SLASH__，否则会调用失败。例如：Vhost名称为/test，入参值为__F_SLASH__test。 | #### 请求参数 表2请求Body参数 | 参数 | 是否必选 | 参数类型 | 描述 | |:---|:---|:---|:---| | name | 是 | String | **参数解释**： Queue名称。 **约束限制**： - 只能由英文字母、数字、点、百分号、竖线、中划线、下划线、斜杠组成。 - 3.x.x版本：长度范围为2\~128个字符。 - AMQP-0-9-1版本：长度范围为2\~64个字符。在计算AMQP-0-9-1版本实例的Queue名称长度时，每个特殊字符（点、百分号、竖线和斜杠）算三个字符长度。 **取值范围**： 不涉及。 **默认取值**： 不涉及。 | | auto_delete | 是 | Boolean | 是否自动删除。 | | durable | 否 | Boolean | 是否持久化（AMQP版本默认持久化，不涉及此字段） | | dead_letter_exchange | 否 | String | 死信Exchange名称，消息被拒绝或过期时将重新发布到该Exchange。 | | dead_letter_routing_key | 否 | String | 死信Exchange的RoutingKey，死信Exchange会发送死信消息到绑定对应RoutingKey的Queue上。 | | message_ttl | 否 | Long | 发布到Queue的消息在被丢弃之前可以存活多长时间。 | | lazy_mode | 否 | String | 若设置惰性队列，请输入lazy。惰性队列模式会在磁盘上存储尽可能多的消息以减少内存使用；若不设置，队列将消息存储在内存缓存以尽可能快地传递消息。（AMQP版本默认将消息存储到磁盘，不涉及此字段） | #### 响应参数 **状态码：200** 表3响应Body参数 | 参数 | 参数类型 | 描述 | |:---|:---|:---| | name | String | **参数解释**： Queue名称。 **取值范围**： 不涉及。 | | auto_delete | Boolean | 是否自动删除。 | | durable | Boolean | 是否持久化（AMQP版本默认持久化，不涉及此字段） | | dead_letter_exchange | String | 死信Exchange名称，消息被拒绝或过期时将重新发布到该Exchange。 | | dead_letter_routing_key | String | 死信Exchange的RoutingKey，死信Exchange会发送死信消息到绑定对应RoutingKey的Queue上。 | | message_ttl | Long | 发布到Queue的消息在被丢弃之前可以存活多长时间。 | | lazy_mode | String | 若设置惰性队列，请输入lazy。惰性队列模式会在磁盘上存储尽可能多的消息以减少内存使用；若不设置，队列将消息存储在内存缓存以尽可能快地传递消息。（AMQP版本默认将消息存储到磁盘，不涉及此字段） | #### 请求示例 创建Queue ``` PUT https://{endpoint}/v2/rabbitmq/{project_id}/instances/{instance_id}/vhosts/{vhost}/queues { "name" : "string", "auto_delete" : true, "durable" : true, "dead_letter_exchange" : "string", "dead_letter_routing_key" : "string", "message_ttl" : 6000, "lazy_mode" : "lazy" } ``` #### 响应示例 **状态码：200** 创建Queue成功。 ``` { "name" : "string", "auto_delete" : true, "durable" : true, "dead_letter_exchange" : "string", "dead_letter_routing_key" : "string", "message_ttl" : 60000, "lazy_mode" : "lazy" } ``` #### SDK代码示例 SDK代码示例如下。 - [Java] 创建Queue ``` 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.rabbitmq.v2.region.RabbitMQRegion; import com.huaweicloud.sdk.rabbitmq.v2.*; import com.huaweicloud.sdk.rabbitmq.v2.model.*; public class CreateQueueSolution { 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); RabbitMQClient client = RabbitMQClient.newBuilder() .withCredential(auth) .withRegion(RabbitMQRegion.valueOf("")) .build(); CreateQueueRequest request = new CreateQueueRequest(); request.withInstanceId("{instance_id}"); request.withVhost("{vhost}"); CreateQueueBody body = new CreateQueueBody(); body.withLazyMode("lazy"); body.withMessageTtl(6000L); body.withDeadLetterRoutingKey("string"); body.withDeadLetterExchange("string"); body.withDurable(true); body.withAutoDelete(true); body.withName("string"); request.withBody(body); try { CreateQueueResponse response = client.createQueue(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] 创建Queue ``` # coding: utf-8 import os from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkrabbitmq.v2.region.rabbitmq_region import RabbitMQRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkrabbitmq.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 = RabbitMQClient.new_builder() \ .with_credentials(credentials) \ .with_region(RabbitMQRegion.value_of("")) \ .build() try: request = CreateQueueRequest() request.instance_id = "{instance_id}" request.vhost = "{vhost}" request.body = CreateQueueBody( lazy_mode="lazy", message_ttl=6000, dead_letter_routing_key="string", dead_letter_exchange="string", durable=True, auto_delete=True, name="string" ) response = client.create_queue(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] 创建Queue ``` package main import ( "fmt" "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic" rabbitmq "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rabbitmq/v2" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rabbitmq/v2/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rabbitmq/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, err := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). WithProjectId(projectId). SafeBuild() if err != nil { fmt.Println(err) return } hcClient, err := rabbitmq.RabbitMQClientBuilder(). WithRegion(region.ValueOf("")). WithCredential(auth). SafeBuild() if err != nil { fmt.Println(err) return } client := rabbitmq.NewRabbitMQClient(hcClient) request := &model.CreateQueueRequest{} request.InstanceId = "{instance_id}" request.Vhost = "{vhost}" lazyModeCreateQueueBody:= "lazy" messageTtlCreateQueueBody:= int64(6000) deadLetterRoutingKeyCreateQueueBody:= "string" deadLetterExchangeCreateQueueBody:= "string" durableCreateQueueBody:= true request.Body = &model.CreateQueueBody{ LazyMode: &lazyModeCreateQueueBody, MessageTtl: &messageTtlCreateQueueBody, DeadLetterRoutingKey: &deadLetterRoutingKeyCreateQueueBody, DeadLetterExchange: &deadLetterExchangeCreateQueueBody, Durable: &durableCreateQueueBody, AutoDelete: true, Name: "string", } response, err := client.CreateQueue(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } } ``` - [更多] 更多编程语言的SDK代码示例，请参见[API Explorer](https://console.huaweicloud.com/apiexplorer/#/openapi/RabbitMQ/sdk?api=CreateQueue)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 | |:---|:---| | 200 | 创建Queue成功。 | #### 错误码 请参见[错误码](https://support.huaweicloud.com/api-rabbitmq/ErrorCode.html)。