Amazon Kinesis Client Library for Java's configuration steps in the Java library

Amazon Kinesis provides Kinesis Client Library (KCL) as an open source Java library to simplify the process of using Amazon Kinesis data stream processing data.This article will provide you with the configuration steps that use Amazon Kinesis Client Library in the Java library and provide related Java code examples. AWS environment settings: 1. Make sure you have appropriate AWS access keys and vouchers.You can set these vouchers by setting up environment variables `AWS_ACCESS_KEY_ID` and` AWS_SECRET_ACCESS_KEY`. Add dependencies: 1. In the Maven project, you need to add the following dependencies to the `pom.xml` file: <dependency> <groupId>software.amazon.kinesis</groupId> <artifactId>kinesis-client</artifactId> <version>2.3.5</version> </dependency> Configure KCL application: 1. Create a Java class and import related packages: import software.amazon.awssdk.auth.credentials.DefaultCredentialsProvider; import software.amazon.awssdk.regions.Region; import software.amazon.kinesis.coordinator.KinesisCoordinators; import software.amazon.kinesis.leases.horizon.HorizonSyncTaskManager; import software.amazon.kinesis.processor.Func; import software.amazon.kinesis.processor.ProcessorBuilder; import software.amazon.kinesis.retrieval.kpl.ExtendedSequenceNumber; import software.amazon.kinesis.retrieval.polling.PollingConfig; import software.amazon.kinesis.retrieval.polling.PollingConfigBuilder; import software.amazon.kinesis.retrieval.polling.PollingService; import software.amazon.kinesis.retrieval.polling.PollingServiceConfig; import software.amazon.kinesis.retrieval.polling.PollingServiceConfigBuilder; 2. Configure the app's AWS area and credential information: Region region = Region.US_WEST_2; DefaultCredentialsProvider credentialsProvider = DefaultCredentialsProvider.builder().build(); 3. Configure the information of Kinesis data stream: String streamName = "your-stream-name"; String applicationName = "your-application-name"; String workerId = "your-worker-id"; 4. Create a retrieval configuration implemented using KPL (Kinesis Producer Library): PollingConfig pollingConfig = new PollingConfigBuilder() .kinesisClient(credentialsProvider) .region(region) .streamName(streamName) .metricsLevel(MetricsLevel.SUMMARY) .build(); 5. Create the configuration of the KCL application: PollingServiceConfig pollingServiceConfig = new PollingServiceConfigBuilder() .kinesisClient(credentialsProvider) .metricsLevel(MetricsLevel.SUMMARY) .region(region) .streamName(streamName) .build(); 6. Create a mission manager of the KCL application: HorizonSyncTaskManager taskManager = new HorizonSyncTaskManager( new HorizonCredentialsProvider(credentialsProvider), pollingServiceConfig, pollingConfig, applicationName, StreamManager.DEFAULT_STREAM_LABEL, workerId, null); 7. Construct a processor for processing data records: ProcessorBuilder<String, MyClass> processorBuilder = new ProcessorBuilder<>(); processorBuilder.recordProcessorFactory(YourRecordProcessor::new); 8. Create and start the coordinator of the KCL application: KinesisCoordinators .standard(applicationName, workerId, credentialsProvider, region, taskManager, processorBuilder) .build() .run(); The above is the steps of using Amazon Kinesis Client Library for Java in the Java class library.You can customize the class and methods in the code according to the actual processing logic and requirements.