
# 查询通道监控 - ShowStreamMetrics
#### 功能介绍
本接口用于查询指定通道的监控数据。
#### 调用方法
请参见[如何调用API](https://support.huaweicloud.com/api-dis/dis_02_0400.html)。
#### URI
GET /v2/{project_id}/streams/{stream_name}/metrics
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。 |
| stream_name | 是    | String | 通道名称。 |
   
表2Query参数 
| 参数         | 是否必选 | 参数类型   | 描述                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|:---|:---|:---|:---|
| label      | 否    | String | 通道监控指标。（label与label_list必须二选一，label_list与label同时存在时，以label_list为准） - total_put_bytes_per_stream：总输入流量（Byte）   - total_get_bytes_per_stream：总输出流量（Byte）   - total_put_records_per_stream：总输入记录数（个）   - total_get_records_per_stream：总输出记录数（个）   - total_put_req_latency：上传请求平均处理时间（毫秒）   - total_get_req_latency：下载请求平均处理时间（毫秒）   - total_put_req_suc_per_stream：上传请求成功次数（个）   - total_get_req_suc_per_stream：下载请求成功次数（个）   - traffic_control_put：因流控拒绝的上传请求次数 （个）   - traffic_control_get：因流控拒绝的下载请求次数 （个）    |
| label_list | 否    | String | 使用label用逗号拼接组成，用于批量查询多个label的指标。（label与label_list必须二选一，label_list与label同时存在时，以label_list为准）                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| start_time | 是    | Long   | 监控开始时间点，10位时间戳。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| end_time   | 是    | Long   | 监控结束时间点，10位时间戳。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
   
#### 请求参数
表3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。 通过调用IAM服务获取用户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4响应Body参数 
| 参数           | 参数类型                                                             | 描述        |
|:---|:---|:---|
| metrics      | [Metrics] object           | 数据对象。     |
| metrics_list | Array of [Metrics] objects | 监控数据对象列表。 |
   
 表5Metrics 
| 参数         | 参数类型                                                                 | 描述    |
|:---|:---|:---|
| dataPoints | Array of [DataPoint] objects | 监控数据。 |
| label      | String                                                               | 监控指标。 |
   
 表6DataPoint 
| 参数        | 参数类型 | 描述         |
|:---|:---|:---|
| timestamp | Long | 时间戳。       |
| value     | Long | 时间戳对应的监控值。 |
   
#### 请求示例
查询通道监控数据
```
GET https://{Endpoint}/v2/{project_id}/streams/{stream_name}/metrics
```
#### 响应示例
无
#### 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.dis.v2.region.DisRegion;
import com.huaweicloud.sdk.dis.v2.*;
import com.huaweicloud.sdk.dis.v2.model.*;
public class ShowStreamMetricsSolution {
    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);
        DisClient client = DisClient.newBuilder()
                .withCredential(auth)
                .withRegion(DisRegion.valueOf("<YOUR REGION>"))
                .build();
        ShowStreamMetricsRequest request = new ShowStreamMetricsRequest();
        request.withStreamName("{stream_name}");
        try {
            ShowStreamMetricsResponse response = client.showStreamMetrics(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 huaweicloudsdkdis.v2.region.dis_region import DisRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkdis.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 = DisClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(DisRegion.value_of("<YOUR REGION>")) \
        .build()
    try:
        request = ShowStreamMetricsRequest()
        request.stream_name = "{stream_name}"
        response = client.show_stream_metrics(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"
    dis "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dis/v2"
"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dis/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dis/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 := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()
    client := dis.NewDisClient(
        dis.DisClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())
    request := &model.ShowStreamMetricsRequest{}
request.StreamName = "{stream_name}"
response, err := client.ShowStreamMetrics(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/DIS/sdk?api=ShowStreamMetrics)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 | 正常返回 |
   
#### 错误码
请参见[错误码](https://support.huaweicloud.com/api-dis/ErrorCode.html)。
