
# 查询新规格可扩容规格列表 - ShowEngineInstanceExtendProductInfo
#### 功能介绍
查询新规格实例可扩容列表
#### 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:instance:getDetail | Read | rabbitmq \* | - g:ResourceTag/\<tag-key\>   - g:EnterpriseProjectId    | dms:instance:get | -      |
     
  
 
#### URI
GET /v2/{engine}/{project_id}/instances/{instance_id}/extend
表1路径参数 
| 参数          | 是否必选 | 参数类型   | 描述                                                                                              |
|:---|:---|:---|:---|
| engine      | 是    | String | 消息引擎的类型。支持的类型为rabbitmq。                                                                         |
| 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。                                                                                           |
   
表2Query参数 
| 参数   | 是否必选 | 参数类型   | 描述                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|:---|:---|:---|:---|
| type | 否    | String | **参数解释**： 产品的类型。 **约束限制**： 不涉及。 **取值范围**： advanced：专享版 **默认取值**： 不涉及。 |
   
#### 请求参数
无
#### 响应参数
**状态码：200**
表3响应Body参数 
| 参数              | 参数类型                                                                                                                               | 描述         |
|:---|:---|:---|
| total           | Integer                                                                                                                            | 查询结果总数。    |
| next_offset     | Integer                                                                                                                            | 下一个偏移量。    |
| previous_offset | Integer                                                                                                                            | 前一个偏移量。    |
| engine          | String                                                                                                                             | 消息引擎类型。    |
| versions        | Array of strings                                                                                                                   | 消息引擎支持的版本。 |
| products        | Array of [RabbitMQExtendProductInfoEntity] objects | 规格变更的产品信息。 |
   
 表4RabbitMQExtendProductInfoEntity 
| 参数                    | 参数类型                                                                                                                                         | 描述                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|:---|:---|:---|
| type                  | String                                                                                                                                       | **参数解释**： 实例类型。 **取值范围**： - single：单机。   - cluster：集群。    |
| product_id            | String                                                                                                                                       | 产品ID。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| billing_code          | String                                                                                                                                       | 账单计费类型。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| ecs_flavor_id         | String                                                                                                                                       | 该产品使用的ECS规格。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| arch_types            | Array of strings                                                                                                                             | 支持的CPU架构类型                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| charging_mode         | Array of strings                                                                                                                             | 支持的计费模式类型。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| ios                   | Array of [RabbitMQExtendProductIosEntity] objects             | 磁盘IO信息。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| properties            | [RabbitMQExtendProductPropertiesEntity] object         | 功能特性的键值对。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| available_zones       | Array of strings                                                                                                                             | 有可用资源的可用区列表。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| unavailable_zones     | Array of strings                                                                                                                             | 资源售罄的可用区列表                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| support_features      | Array of [RabbitMQProductSupportFeaturesEntity] objects | 支持的特性功能。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| qingtian_incompatible | Boolean                                                                                                                                      | 是否兼容擎天。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
   
 表5RabbitMQExtendProductIosEntity 
| 参数                | 参数类型             | 描述                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|:---|:---|:---|
| io_spec           | String           | **参数解释**： 存储IO规格。 **取值范围**： - dms.physical.storage.high.v2：高IO云硬盘。   - dms.physical.storage.ultra.v2：超高IO云硬盘。   - dms.physical.storage.general：通用型SSD云硬盘。   - dms.physical.storage.extreme：极速型SSD云硬盘。    |
| available_zones   | Array of strings | 有可用资源的可用区列表                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| type              | String           | **参数解释**： IO类型。 **取值范围**： evs                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| unavailable_zones | Array of strings | 资源售罄的可用区列表。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
   
 表6RabbitMQExtendProductPropertiesEntity 
| 参数                        | 参数类型   | 描述               |
|:---|:---|:---|
| max_broker                | String | Broker的最大个数。     |
| max_storage_per_node      | String | 每个节点的最大存储。单位为GB。 |
| min_broker                | String | Broker的最小个数。     |
| min_storage_per_node      | String | 每个节点的最小存储。单位为GB。 |
| max_connection_per_broker | String | 最大连接数            |
| step_length               | String | 步长               |
| product_alias             | String | product_id的别名。   |
| max_queue_per_broker      | String | 最大队列             |
   
 表7RabbitMQProductSupportFeaturesEntity 
| 参数         | 参数类型                 | 描述        |
|:---|:---|:---|
| name       | String               | 特性名称。     |
| properties | Map\<String,String\> | 功能特性的键值对。 |
   
#### 请求示例
查询实例的扩容规格列表。
```
GET https://{endpoint}/v2/{engine}/{project_id}/instances/{instance_id}/extend
```
#### 响应示例
**状态码：200**
查询实例的扩容规格列表成功。
```
{
  "total" : 2,
  "next_offset" : -1,
  "previous_offset" : -1,
  "engine" : "rabbitmq",
  "versions" : [ "3.8.35" ],
  "products" : [ {
    "type" : "single",
    "product_id" : "c6.2u4g.single",
    "ecs_flavor_id" : "c6.large.2",
    "billing_code" : "dms.platinum.c6",
    "arch_types" : [ "X86" ],
    "charging_mode" : [ "monthly", "hourly" ],
    "ios" : [ {
      "io_spec" : "dms.physical.storage.ultra.v2",
      "available_zones" : [ "xxx" ],
      "type" : "evs",
      "unavailable_zones" : [ "xxx" ]
    }, {
      "io_spec" : "dms.physical.storage.high.v2",
      "available_zones" : [ "xxx" ],
      "type" : "evs",
      "unavailable_zones" : [ "xxx" ]
    } ],
    "support_features" : [ ],
    "properties" : {
      "max_connection_per_broker" : "2000",
      "max_broker" : "1",
      "max_queue_per_broker" : "100",
      "max_storage_per_node" : "30000",
      "min_broker" : "1",
      "product_alias" : "rabbitmq.2u4g.single",
      "step_length" : "0",
      "min_storage_per_node" : "100"
    },
    "available_zones" : [ "xxx" ],
    "unavailable_zones" : [ ],
    "qingtian_incompatible" : false
  }, {
    "type" : "single",
    "product_id" : "c6.4u8g.single",
    "ecs_flavor_id" : "c6.xlarge.2",
    "billing_code" : "dms.platinum.c6",
    "arch_types" : [ "X86" ],
    "charging_mode" : [ "monthly", "hourly" ],
    "ios" : [ {
      "io_spec" : "dms.physical.storage.high.v2",
      "available_zones" : [ "xxx" ],
      "type" : "evs",
      "unavailable_zones" : [ "xxx" ]
    }, {
      "io_spec" : "dms.physical.storage.ultra.v2",
      "available_zones" : [ "xxx" ],
      "type" : "evs",
      "unavailable_zones" : [ "xxx" ]
    } ],
    "support_features" : [ ],
    "properties" : {
      "max_connection_per_broker" : "3000",
      "max_broker" : "1",
      "max_queue_per_broker" : "200",
      "max_storage_per_node" : "30000",
      "min_broker" : "1",
      "product_alias" : "rabbitmq.4u8g.single",
      "step_length" : "0",
      "min_storage_per_node" : "100"
    },
    "available_zones" : [ "xxx" ],
    "unavailable_zones" : [ ],
    "qingtian_incompatible" : false
  } ]
}
```
#### SDK代码示例
SDK代码示例如下。
- [Java]
  ```
  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 ShowEngineInstanceExtendProductInfoSolution {
      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("<YOUR REGION>"))
                  .build();
          ShowEngineInstanceExtendProductInfoRequest request = new ShowEngineInstanceExtendProductInfoRequest();
          request.withEngine(ShowEngineInstanceExtendProductInfoRequest.EngineEnum.fromValue("{engine}"));
          request.withInstanceId("{instance_id}");
          try {
              ShowEngineInstanceExtendProductInfoResponse response = client.showEngineInstanceExtendProductInfo(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]
  ```
  # 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("<YOUR REGION>")) \
          .build()
      try:
          request = ShowEngineInstanceExtendProductInfoRequest()
          request.engine = "{engine}"
          request.instance_id = "{instance_id}"
          response = client.show_engine_instance_extend_product_info(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]
  ```
  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("<YOUR REGION>")).
           WithCredential(auth).
           SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      client := rabbitmq.NewRabbitMQClient(hcClient)
      request := &model.ShowEngineInstanceExtendProductInfoRequest{}
  request.Engine = model.GetShowEngineInstanceExtendProductInfoRequestEngineEnum().ENGINE
  request.InstanceId = "{instance_id}"
  response, err := client.ShowEngineInstanceExtendProductInfo(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=ShowEngineInstanceExtendProductInfo)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 | 查询实例的扩容规格列表成功。 |
   
#### 错误码
请参见[错误码](https://support.huaweicloud.com/api-rabbitmq/ErrorCode.html)。
