
# 查询消息积压诊断报告列表 - ListMessageDiagnosisReports
#### 功能介绍
查询消息积压诊断报告列表
#### 调用方法
请参见[如何调用API](https://support.huaweicloud.com/api-kafka/api-call-process.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-kafka/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:listDiagnosisReport | List | rocketmq \* | - g:ResourceTag/\<tag-key\>   - g:EnterpriseProjectId    | dms:instance:get | -      |
     
  
 
#### URI
GET /v2/{project_id}/kafka/instances/{instance_id}/message-diagnosis-tasks
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-kafka/kafka-api-0036212547.html)。 |
| instance_id | 是    | String | 实例ID                                                                                       |
   
表2Query参数 
| 参数     | 是否必选 | 参数类型    | 描述                |
|:---|:---|:---|:---|
| offset | 否    | Integer | 偏移量，表示查询该偏移量后面的记录 |
| limit  | 否    | Integer | 查询返回记录的数量限制       |
   
#### 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     |
|:---|:---|:---|
| report_list | Array of [KafkaMessageDiagnosisReportInfoEntity] objects | 诊断报告列表 |
| total_num   | Integer                                                                                                                                | 诊断报告总数 |
   
 表4KafkaMessageDiagnosisReportInfoEntity 
| 参数                     | 参数类型    | 描述                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|:---|:---|:---|
| report_id              | String  | 诊断报告ID                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| status                 | String  | 消息积压诊断任务状态。 - diagnosing：诊断中   - failed：诊断失败   - deleted：手动删除   - finished：诊断完成   - normal：诊断结果正常   - abnormal：诊断结果异常    |
| begin_time             | String  | 诊断任务开始时间                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| end_time               | String  | 诊断任务结束时间                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| group_name             | String  | 该次诊断任务诊断的消费组名称                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| topic_name             | String  | 该次诊断任务诊断的Topic名称                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| accumulated_partitions | Integer | 该次诊断任务发现的存在消息堆积的分区数                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
   
#### 请求示例
查询消息积压诊断报告列表。
```
GET https://{endpoint}/v2/{project_id}/kafka/instances/{instance_id}/message-diagnosis-tasks?offset=1&limit=10
```
#### 响应示例
**状态码：200**
查询消息积压诊断报告列表成功
```
{
  "report_list" : [ {
    "report_id" : "89b202d5-1f34-4a89-af9d-698496d0b7b1",
    "status" : "diagnosing",
    "begin_time" : "2022-11-11T10:00:00.000Z",
    "end_time" : "2022-11-11T10:00:00.000Z",
    "group_name" : "group-test",
    "topic_name" : "topic-test",
    "accumulated_partitions" : 3
  } ],
  "total_num" : 1
}
```
#### 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.kafka.v2.region.KafkaRegion;
  import com.huaweicloud.sdk.kafka.v2.*;
  import com.huaweicloud.sdk.kafka.v2.model.*;
  public class ListMessageDiagnosisReportsSolution {
      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);
          KafkaClient client = KafkaClient.newBuilder()
                  .withCredential(auth)
                  .withRegion(KafkaRegion.valueOf("<YOUR REGION>"))
                  .build();
          ListMessageDiagnosisReportsRequest request = new ListMessageDiagnosisReportsRequest();
          request.withInstanceId("{instance_id}");
          try {
              ListMessageDiagnosisReportsResponse response = client.listMessageDiagnosisReports(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 huaweicloudsdkkafka.v2.region.kafka_region import KafkaRegion
  from huaweicloudsdkcore.exceptions import exceptions
  from huaweicloudsdkkafka.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 = KafkaClient.new_builder() \
          .with_credentials(credentials) \
          .with_region(KafkaRegion.value_of("<YOUR REGION>")) \
          .build()
      try:
          request = ListMessageDiagnosisReportsRequest()
          request.instance_id = "{instance_id}"
          response = client.list_message_diagnosis_reports(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"
      kafka "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2"
  "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/model"
      region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/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 := kafka.KafkaClientBuilder().
           WithRegion(region.ValueOf("<YOUR REGION>")).
           WithCredential(auth).
           SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      client := kafka.NewKafkaClient(hcClient)
      request := &model.ListMessageDiagnosisReportsRequest{}
  request.InstanceId = "{instance_id}"
  response, err := client.ListMessageDiagnosisReports(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/Kafka/sdk?api=ListMessageDiagnosisReports)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 | 查询消息积压诊断报告列表成功 |
   
#### 错误码
请参见[错误码](https://support.huaweicloud.com/api-kafka/ErrorCode.html)。
