在Java程序中获取错误以写入Kinesis Firehose流

Question

我试图将一些数据从API（Google股票/财务API）写入我的AWS Firehose流。 我已经在Eclipse上下载并安装了AWS插件，在AWS上设置了Firehose流，并且一切似乎都已正确设置。 不过，我遇到了一些问题。 以下行似乎已被弃用...我尝试了与Amazon SDK不同的变体，但似乎无法获得正确的代码。

AmazonKinesisFirehoseClient firehoseClient =新的AmazonKinesisFirehoseClient（凭证）;

接下来，我在以下方面遇到一些错误。 尽管我直接从Amazon的API参考中获取了该错误，但特定的错误是“ 对于类型PutRecordRequest，未定义setRecord（Record）方法” 。

request.setRecord（record）;

firehoseClient.putRecord（request）;

在上面的第二行上也出现错误： “ AmazonKinesisFirehoseClient类型的方法putRecord（com.amazonaws.services.kinesisfirehose.model.PutRecordRequest）不适用于参数（com.amazonaws.services.kinesis.model.PutRecordRequest） ”

package com.amazonaws.samples;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.ByteBuffer;

import org.apache.http.client.CredentialsProvider;

import com.amazonaws.*;
import com.amazonaws.AmazonClientException;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient;
import com.amazonaws.services.kinesis.AmazonKinesis;
import com.amazonaws.services.kinesis.AmazonKinesisClient;
import com.amazonaws.services.kinesis.AmazonKinesisClientBuilder;
import com.amazonaws.services.kinesis.clientlibrary.interfaces.IRecordProcessorFactory;
import com.amazonaws.services.kinesis.clientlibrary.lib.worker.InitialPositionInStream;
import com.amazonaws.services.kinesis.clientlibrary.lib.worker.KinesisClientLibConfiguration;
import com.amazonaws.services.kinesis.clientlibrary.lib.worker.Worker;
import com.amazonaws.services.kinesis.model.PutRecordRequest;
import com.amazonaws.services.kinesis.model.ResourceNotFoundException;
import com.amazonaws.services.kinesisfirehose.AmazonKinesisFirehoseClient;
import com.amazonaws.services.kinesisfirehose.model.PutRecordBatchRequest;
import com.amazonaws.services.kinesisfirehose.model.Record;

public class FirehoseExample {

    public static void main(String[] args) {
        AWSCredentials credentials = null;

        try {
            credentials = new ProfileCredentialsProvider().getCredentials();
        }

        catch (Exception e) {
            throw new AmazonClientException("Cannot load the credentials from the credential profiles file. "
                    + "Please make sure that your credentials file is at the correct "
                    + "location (/Users/elybenari/.aws/credentials), and is in valid format.", e);
        }

        AmazonKinesisFirehoseClient firehoseClient = new AmazonKinesisFirehoseClient(credentials);
        PutRecordRequest request = new PutRecordRequest();
        request.setStreamName("project-stream");

        Record record = new Record();

        for (int i = 0; i < 20*60; i++){
            try {
                URL url = new URL("https://www.google.com/finance/info?q=NASDAQ:AMZN");
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                StringBuilder response = new StringBuilder();
                String line;

                while ((line = reader.readLine()) != null) {
                    response.append(line);  
                }
                reader.close();

                System.out.println(response.toString().replace("\n", "").replaceAll(" ", ""));
                System.out.println("****\n");

                ByteBuffer buffer = ByteBuffer.wrap(response.toString().replace("\n", "").replaceAll(" ", "").getBytes());
                record.setData(buff);

                request.setRecord(record);

                firehoseClient.putRecord(request);

                Thread.sleep(2000);


            }
            catch(Exception e){
                e.printStackTrace();
            }
        }   

    }




    }

Answer 1

问题是您包含了Kinesis的某些类， 而不是 Kinesis Firehose Java包。 例如，您使用了：

import com.amazonaws.services.kinesis.model.PutRecordRequest;

而您应该使用：

import com.amazonaws.services.kinesisfirehose.model.PutRecordRequest;

Kinesis，Kinesis Firehose和Kinesis Analytics是不同的服务，即使它们属于AWS上的流服务的总括。 因此，它们在Java SDK中具有不同的包名称空间。 如果从此处的官方文档开始 ，您将在此处找到正确的Java SDK参考。

编辑 ：要回答您的另一个问题：是的，不推荐使用以下内容：

AmazonKinesisFirehoseClient firehoseClient = new AmazonKinesisFirehoseClient(credentials);

您应该改为使用以下内容：

 AmazonKinesisFirehoseClient firehoseClient = AmazonKinesisFirehoseClientBuilder.standard().withCredentials(new AWSStaticCredentialsProvider(awsCredentials)).build();

有关如何正确初始化AmazonKinesisFirehoseClient的信息，请参阅此处的官方文档。