AWS describeLogGroups() 不返回日志组答案

【问题标题】：AWS describeLogGroups() does not return the log groupsAWS describeLogGroups() 不返回日志组
【发布时间】：2016-02-21 04:46:37
【问题描述】：

AWS describeLogGroups() 不返回日志组。有没有人遇到过这个？如果是，你是如何克服的？这是代码...

import java.util.List;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.services.logs.AWSLogsClient;
import com.amazonaws.services.logs.model.DescribeLogGroupsResult;
import com.amazonaws.services.logs.model.LogGroup;

public class MyAWSLogGroups {

  public static void main(String[] args) {

    AWSCredentials credentials = new ProfileCredentialsProvider().getCredentials();
    AWSLogsClient client = new AWSLogsClient(credentials);

    DescribeLogGroupsResult logGroupsResult = client.describeLogGroups();
    List<LogGroup> logGroups = logGroupsResult.getLogGroups();

    // why does logGroups.size() return 0 ?
    System.out.println("=> Number of Log Groups: " + logGroups.size()); 

    for (LogGroup lg : logGroups) {
      String logGroupName = lg.getLogGroupName();
      System.out.println(logGroupName);
    }

  }

}

此 AWS CLI 显示日志组 ...

$ aws logs describe-log-groups

【问题讨论】：

标签： java amazon-web-services aws-sdk amazon-cloudwatch

【解决方案1】：

我知道这有点晚了，但我自己也遇到了这个问题。您的 Cloudfront 日志是否位于美国东部以外的区域？

我们在美国西部。 Java SKD defaults to us-east-1 但您可能在不久前设置了客户端默认区域。

在您的客户端上使用 configureRegion 继承方法来设置您的位置区域。从区域class documentation 获取您的区域枚举。

对我来说，解决方案是这样的（使用上面的示例代码）：

import java.util.List;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.services.logs.AWSLogsClient;
import com.amazonaws.services.logs.model.DescribeLogGroupsResult;
import com.amazonaws.services.logs.model.LogGroup;
import com.amazonaws.regions.Regions;

public class MyAWSLogGroups {

  public static void main(String[] args) {

    AWSCredentials credentials = new ProfileCredentialsProvider().getCredentials();
    AWSLogsClient client = new AWSLogsClient(credentials);
    client.configureRegion(Regions.US_WEST_2);

    DescribeLogGroupsResult logGroupsResult = client.describeLogGroups();
    List<LogGroup> logGroups = logGroupsResult.getLogGroups();

    // why does logGroups.size() return 0 ?
    System.out.println("=> Number of Log Groups: " + logGroups.size()); 

    for (LogGroup lg : logGroups) {
      String logGroupName = lg.getLogGroupName();
      System.out.println(logGroupName);
    }

  }

}

【讨论】：