本教程介绍如何使用Alibaba Cloud SDK for Java调用RDS的DescribeDBInstancePerformance接口获取实例的性能指标情况。
前提条件
在使用本教程之前,请确保已完成以下操作:
- 使用RDS管理控制台或通过API获取到想要查看性能指标的RDS实例ID,API的相关操作,请参见DescribeDBInstances。
- 使用Alibaba Cloud SDK for Java,您需要一个阿里云账号和访问密钥(AccessKey)。 请在阿里云控制台中的AccessKey管理页面上创建和查看您的AccessKey。
- 确保您已经安装了Alibaba Cloud SDK for Java,准确的SDK版本号,请参见 阿里云开发工具包(SDK)。
<project> <modelVersion>4.0.0</modelVersion> <groupId>java.demo</groupId> <artifactId>test</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <!-- https://mvnrepository.com/artifact/com.aliyun/aliyun-java-sdk-core --> <dependency> <groupId>com.aliyun</groupId> <artifactId>aliyun-java-sdk-core</artifactId> <version>4.4.3</version> </dependency> <!-- https://mvnrepository.com/artifact/com.aliyun/aliyun-java-sdk-rds --> <dependency> <groupId>com.aliyun</groupId> <artifactId>aliyun-java-sdk-rds</artifactId> <version>2.3.10</version> </dependency> </dependencies> </project>
代码示例
本文操作示例主要以代码形式体现,具体代码如下:
import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.exceptions.ServerException;
import com.aliyuncs.profile.DefaultProfile;
import com.aliyuncs.rds.model.v20140815.DescribeDBInstancePerformanceRequest;
import com.aliyuncs.rds.model.v20140815.DescribeDBInstancePerformanceResponse;
import com.google.gson.Gson;
public class DescribeDBInstancePerformanceDemo {
// RDS实例ID
private static final String dbInstanceId = "rm-bp1io2x7682t1****";
// 性能参数key:CPU和内存使用率,多个值用英文逗号(,)分隔
private static final String performanceKeys = "MySQL_MemCpuUsage";
// 查询开始时间。格式:yyyy-MM-ddTHH:mmZ(UTC时间)
private static final String startTime = "2019-11-04T16:00Z";
// 查询结束时间。格式:yyyy-MM-ddTHH:mmZ(UTC时间)
private static final String endTime = "2019-11-04T18:00Z";
public static void main(String[] args) {
DefaultProfile profile = DefaultProfile.getProfile(
"<your-region-id>", // 您的地域ID
"<your-access-key-id>", // 您的AccessKey ID
"<your-access-key-secret>");// 您的AccessKey Secret
IAcsClient client = new DefaultAcsClient(profile);
DescribeDBInstancePerformanceRequest request = new DescribeDBInstancePerformanceRequest();
request.setDBInstanceId(dbInstanceId);
request.setKey(performanceKeys);
request.setStartTime(startTime);
request.setEndTime(endTime);
try {
DescribeDBInstancePerformanceResponse response = client.getAcsResponse(request);
System.out.println(new Gson().toJson(response));
} catch (ServerException e) {
e.printStackTrace();
} catch (ClientException e) {
System.out.println("ErrCode:" + e.getErrCode());
System.out.println("ErrMsg:" + e.getErrMsg());
System.out.println("RequestId:" + e.getRequestId());
}
}
}
运行结果
正确运行结果类似如下:
{
"requestId": "0512859A-1A61-4E43-962B-F6890F553336",
"dBInstanceId": "rm-bp1io2x7682t1****",
"engine": "MySQL",
"startTime": "2019-11-04T16:00Z",
"endTime": "2019-11-04T18:00Z",
"performanceKeys": [
{
"key": "MySQL_MemCpuUsage",
"unit": "%",
"valueFormat": "cpuusagememusage",
"values": [
{
"value": "0.48&8.8",
"date": "2019-11-04T16:00:31Z"
},
{
"value": "0.48&8.8",
"date": "2019-11-04T16:01:31Z"
},
{
"value": "0.0&8.8",
"date": "2019-11-04T16:02:31Z"
},
{
"value": "0.48&8.8",
"date": "2019-11-04T16:03:32Z"
},
{
"value": "0.0&8.8",
"date": "2019-11-04T16:04:31Z"
},
......
{
"value": "0.0&8.8",
"date": "2019-11-04T17:58:39Z"
},
{
"value": "0.48&8.8",
"date": "2019-11-04T17:59:39Z"
}
]
}
]
}
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