
# 查询所有可用区 - ShowAvailabilityZones
#### 功能介绍
查询CDM集群的所有可用区。
#### 调用方法
请参见[如何调用API](https://support.huaweicloud.com/api-dataartsstudio/making_request.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-dataartsstudio/abcd.html)。
- 如果使用身份策略授权，当前API调用无需身份策略权限。
 
#### URI
GET /v1.1/{project_id}/regions/{region_id}/availability_zones
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，获取方法请参见[项目ID和账号ID](https://support.huaweicloud.com/api-dataartsstudio/projectid_accountid.html)。 |
| region_id  | 是    | String | 通过调用IAM服务的"查询区域列表"接口获取响应消息中的区域ID。                                                                     |
   
#### 请求参数
表2请求Header参数 
| 参数           | 是否必选 | 参数类型   | 描述                                                                                                                                                       |
|:---|:---|:---|:---|
| X-Auth-Token | 是    | String | 用户Token，使用[Token认证](https://support.huaweicloud.com/api-dataartsstudio/dataartsstudio_02_0010.html)时必选。通过调用IAM服务的"获取用户Token"接口获取响应消息头中X-Subject-Token的值。 |
   
#### 响应参数
**状态码：200**
表3响应Body参数 
| 参数             | 参数类型                                                                                                       | 描述     |
|:---|:---|:---|
| regionId       | String                                                                                                     | 区域ID。  |
| defaultAZ      | String                                                                                                     | 默认可用区。 |
| availableZones | Array of [CdmClusterAvailabilityZone] objects | 可用区。   |
   
 表4CdmClusterAvailabilityZone 
| 参数                | 参数类型   | 描述                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|:---|:---|:---|
| availableZoneId   | String | 可用区ID。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| availableZoneName | String | 可用区名称。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| availableZoneCode | String | 可用区码。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| azStatus          | String | 可用区状态： - Available：可用。   - Allow：可见但无权限。                                                                                                                                                                           |
| type              | String | 可用区类型： - Core：核心可用区。   - Dedicated：专属可用区，只对内部客户开放。   - Edge：边缘可用区。    |
| tags              | Object | 可用区tag。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
   
#### 请求示例
```
GET /v1.1/1551c7f6c808414d8e9f3c514a170f2e/regions/xxx-xxx-xxx/availability_zones
```
#### 响应示例
**状态码：200**
请求成功。
```
{
  "regionId" : "xxx-xxx-xxx",
  "defaultAZ" : "xxx-xxx-xxx",
  "availableZones" : [ {
    "availableZoneId" : "xxx-xxx-xxx",
    "availableZoneName" : "xxx-xxx-xxx",
    "availableZoneCode" : "xxx-xxx-xxx",
    "azStatus" : "Available",
    "type" : null,
    "tags" : null
  } ]
}
```
#### 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.cdm.v1.region.CdmRegion;
  import com.huaweicloud.sdk.cdm.v1.*;
  import com.huaweicloud.sdk.cdm.v1.model.*;
  public class ShowAvailabilityZonesSolution {
      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);
          CdmClient client = CdmClient.newBuilder()
                  .withCredential(auth)
                  .withRegion(CdmRegion.valueOf("<YOUR REGION>"))
                  .build();
          ShowAvailabilityZonesRequest request = new ShowAvailabilityZonesRequest();
          request.withRegionId("{region_id}");
          try {
              ShowAvailabilityZonesResponse response = client.showAvailabilityZones(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 huaweicloudsdkcdm.v1.region.cdm_region import CdmRegion
  from huaweicloudsdkcore.exceptions import exceptions
  from huaweicloudsdkcdm.v1 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 = CdmClient.new_builder() \
          .with_credentials(credentials) \
          .with_region(CdmRegion.value_of("<YOUR REGION>")) \
          .build()
      try:
          request = ShowAvailabilityZonesRequest()
          request.region_id = "{region_id}"
          response = client.show_availability_zones(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"
      cdm "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cdm/v1"
  "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cdm/v1/model"
      region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cdm/v1/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 := cdm.CdmClientBuilder().
           WithRegion(region.ValueOf("<YOUR REGION>")).
           WithCredential(auth).
           SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      client := cdm.NewCdmClient(hcClient)
      request := &model.ShowAvailabilityZonesRequest{}
  request.RegionId = "{region_id}"
  response, err := client.ShowAvailabilityZones(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/CDM/sdk?api=ShowAvailabilityZones)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 | 请求成功。                 |
| 400 | 请求错误。                 |
| 401 | 鉴权失败。                 |
| 403 | 没有操作权限。               |
| 404 | 找不到资源。                |
| 500 | 服务内部错误，具体返回错误码请参考错误码。 |
| 503 | 服务不可用。                |
   
#### 错误码
请参见[错误码](https://support.huaweicloud.com/api-dataartsstudio/ErrorCode.html)。
