Question

我正在尝试使用AWS Java SDK v1.7.5访问我的AWS DataPipelines，但listPipelines在下面的代码中返回一个空列表。

我有在美国东部地区安排的DataPipelines，我相信我应该能够使用DataPipelineClient的listPipelines方法列出。我已经使用ProfilesConfigFile进行身份验证并连接到S3，DynamoDB和Kinesis没有问题。我已将PowerUserAccess访问策略授予配置文件中指定的IAM用户。我也尝试将管理员访问策略应用于用户，但它没有改变任何内容。这是我正在使用的代码：

//Establish credentials for connecting to AWS.
File configFile = new File(System.getProperty("user.home"), ".aws/config");     
ProfilesConfigFile profilesConfigFile = new ProfilesConfigFile(configFile);             
AWSCredentialsProvider awsCredentialsProvider = new ProfileCredentialsProvider(profilesConfigFile, "default");

//Set up the AWS DataPipeline connection.
DataPipelineClient dataPipelineClient = new DataPipelineClient(awsCredentialsProvider);
Region usEast1 = Region.getRegion(Regions.US_EAST_1);
dataPipelineClient.setRegion(usEast1);

//List all pipelines we have access to.
ListPipelinesResult listPipelinesResult = dataPipelineClient.listPipelines();  //empty list returned here.
for (PipelineIdName p: listPipelinesResult.getPipelineIdList()) {
    System.out.println(p.getId());
}

Answer 1

确保检查是否有更多结果 - 我注意到有时API只返回很少的管道（甚至可能是空的），但有一个标志可以获得更多结果。您可以像这样检索它们：

void listPipelines(DataPipelineClient dataPipelineClient, String marker) {
    ListPipelinesRequest request = new ListPipelinesRequest();
    if (marker != null) {
        request.setMarker(marker);
    }

    ListPipelinesResult listPipelinesResult = client.listPipelines(request);
    for (PipelineIdName p: listPipelinesResult.getPipelineIdList()) {
        System.out.println(p.getId());
    }

    // Call recursively if there are more results:
    if (pipelineList.getHasMoreResults()) {
        listPipelines(dataPipelineClient, listPipelinesResult.getMarker());
    }
}

AWS DataPipelineClient - listPipelines不返回任何记录

1 个答案: