
# 查询API版本信息列表 - ShowVersion
#### 功能介绍
该API用于查询CCE服务当前支持的API版本信息列表。
#### 调用方法
请参见[如何调用API](https://support.huaweicloud.com/api-cce/cce_02_0099.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-cce/cce_02_0395.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 /
#### 请求参数
无
#### 响应参数
**状态码：200**
表1响应Body参数 
| 参数       | 参数类型                                                                         | 描述                                                                                                                             |
|:---|:---|:---|
| versions | Array of [APIVersionDetail] objects | **参数解释：** API版本信息列表 **取值范围：** 不涉及 |
   
 表2APIVersionDetail 
| 参数          | 参数类型                                                                     | 描述                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|:---|:---|:---|
| id          | String                                                                   | **参数解释：** API版本ID，例如v3。 **取值范围：** - v3   - v3.1                                                                                                                                                                                              |
| links       | Array of [APIVersionLink] objects | **参数解释：** API版本的URL链接信息。 **取值范围：** 不涉及                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| min_version | String                                                                   | **参数解释：** 如果API的这个版本支持微版本，则支持最小的微版本。如果不支持微版本，这将是空字符串。 **取值范围：** 不涉及                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| status      | String                                                                   | **参数解释：** API版本的状态。 **取值范围：** - CURRENT：这是使用的API的首选版本   - SUPPORTED：这是一个较老的，但仍然支持的API版本   - DEPRECATED：一个被废弃的API版本，该版本将被删除    |
| updated     | String                                                                   | **参数解释：** API发布时间（UTC格式）。例如API版本为v3时，值为'2018-09-15 00:00:00Z'。 **取值范围：** 不涉及                                                                                                                                                                                                                                                                                                                                                                                                                              |
| version     | String                                                                   | **参数解释：** 如果API的这个版本支持微版本，则支持最大的微版本。如果不支持微版本，这将是空字符串。 **取值范围：** 不涉及                                                                                                                                                                                                                                                                                                                                                                                                                                       |
   
 表3APIVersionLink 
| 参数   | 参数类型   | 描述                                                                                                                                                                                                                                                                                                        |
|:---|:---|:---|
| href | String | **参数解释：** API版本信息的链接。 **取值范围：** 不涉及                                                                                                                                                                          |
| rel  | String | **参数解释：** 链接属性。 **取值范围：** - self：自助链接包含版本链接的资源。立即链接后使用这些链接。    |
   
#### 请求示例
无
#### 响应示例
**状态码：200**
表示查询API版本信息列表成功。
```
{
  "versions" : [ {
    "id" : "v3",
    "links" : [ {
      "href" : "https://cce.region.***.com/v3",
      "rel" : "self"
    } ],
    "min_version" : "",
    "status" : "CURRENT",
    "updated" : "2018-09-15 00:00:00Z",
    "version" : ""
  } ]
}
```
#### 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.cce.v3.region.CceRegion;
  import com.huaweicloud.sdk.cce.v3.*;
  import com.huaweicloud.sdk.cce.v3.model.*;
  public class ShowVersionSolution {
      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");
          ICredential auth = new BasicCredentials()
                  .withAk(ak)
                  .withSk(sk);
          CceClient client = CceClient.newBuilder()
                  .withCredential(auth)
                  .withRegion(CceRegion.valueOf("<YOUR REGION>"))
                  .build();
          ShowVersionRequest request = new ShowVersionRequest();
          try {
              ShowVersionResponse response = client.showVersion(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 huaweicloudsdkcce.v3.region.cce_region import CceRegion
  from huaweicloudsdkcore.exceptions import exceptions
  from huaweicloudsdkcce.v3 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"]
      credentials = BasicCredentials(ak, sk)
      client = CceClient.new_builder() \
          .with_credentials(credentials) \
          .with_region(CceRegion.value_of("<YOUR REGION>")) \
          .build()
      try:
          request = ShowVersionRequest()
          response = client.show_version(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"
      cce "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cce/v3"
  "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cce/v3/model"
      region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cce/v3/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")
      auth, err := basic.NewCredentialsBuilder().
          WithAk(ak).
          WithSk(sk).
          SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      hcClient, err := cce.CceClientBuilder().
           WithRegion(region.ValueOf("<YOUR REGION>")).
           WithCredential(auth).
           SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      client := cce.NewCceClient(hcClient)
      request := &model.ShowVersionRequest{}
  response, err := client.ShowVersion(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/CCE/sdk?api=ShowVersion)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 | 表示查询API版本信息列表成功。 |
   
#### 错误码
请参见[错误码](https://support.huaweicloud.com/api-cce/ErrorCode.html)。
