Package software.amazon.awscdk.services.kinesis.analytics.flink

@Stability(Experimental) @Deprecated package software.amazon.awscdk.services.kinesis.analytics.flink
Deprecated.

Kinesis Analytics Flink

---

End-of-Support

AWS CDK v1 has reached End-of-Support on 2023-06-01. This package is no longer being updated, and users should migrate to AWS CDK v2.

For more information on how to migrate, see the Migrating to AWS CDK v2 guide.

This package provides constructs for creating Kinesis Analytics Flink applications. To learn more about using using managed Flink applications, see the AWS developer guide.

To create a new Flink application, use the Application construct: 

 import path.*;
 import software.amazon.awscdk.core.*;
 import software.amazon.awscdk.services.kinesis.analytics.flink.*;
 import software.amazon.awscdk.services.cloudwatch.*;
 
 App app = new App();
 Stack stack = new Stack(app, "FlinkAppTest");
 
 Application flinkApp = Application.Builder.create(stack, "App")
         .code(ApplicationCode.fromAsset(join(__dirname, "code-asset")))
         .runtime(Runtime.FLINK_1_11)
         .build();
 
 Alarm.Builder.create(stack, "Alarm")
         .metric(flinkApp.metricFullRestarts())
         .evaluationPeriods(1)
         .threshold(3)
         .build();
 
 app.synth();

The code property can use fromAsset as shown above to reference a local jar file in s3 or fromBucket to reference a file in s3. 

 import path.*;
 import software.amazon.awscdk.services.s3.assets.*;
 import software.amazon.awscdk.core.*;
 import software.amazon.awscdk.services.kinesis.analytics.flink.*;
 
 App app = new App();
 Stack stack = new Stack(app, "FlinkAppCodeFromBucketTest");
 
 Asset asset = Asset.Builder.create(stack, "CodeAsset")
         .path(join(__dirname, "code-asset"))
         .build();
 IBucket bucket = asset.getBucket();
 String fileKey = asset.getS3ObjectKey();
 
 Application.Builder.create(stack, "App")
         .code(ApplicationCode.fromBucket(bucket, fileKey))
         .runtime(Runtime.FLINK_1_11)
         .build();
 
 app.synth();

The propertyGroups property provides a way of passing arbitrary runtime properties to your Flink application. You can use the aws-kinesisanalytics-runtime library to retrieve these properties. 

 Bucket bucket;
 
 Application flinkApp = Application.Builder.create(this, "Application")
         .propertyGroups(PropertyGroups.builder()
                 .FlinkApplicationProperties(Map.of(
                         "inputStreamName", "my-input-kinesis-stream",
                         "outputStreamName", "my-output-kinesis-stream"))
                 .build())
         // ...
         .runtime(Runtime.FLINK_1_13)
         .code(ApplicationCode.fromBucket(bucket, "my-app.jar"))
         .build();

Flink applications also have specific configuration for passing parameters when the Flink job starts. These include parameters for checkpointing, snapshotting, monitoring, and parallelism. 

 Bucket bucket;
 
 Application flinkApp = Application.Builder.create(this, "Application")
         .code(ApplicationCode.fromBucket(bucket, "my-app.jar"))
         .runtime(Runtime.FLINK_1_13)
         .checkpointingEnabled(true) // default is true
         .checkpointInterval(Duration.seconds(30)) // default is 1 minute
         .minPauseBetweenCheckpoints(Duration.seconds(10)) // default is 5 seconds
         .logLevel(LogLevel.ERROR) // default is INFO
         .metricsLevel(MetricsLevel.PARALLELISM) // default is APPLICATION
         .autoScalingEnabled(false) // default is true
         .parallelism(32) // default is 1
         .parallelismPerKpu(2) // default is 1
         .snapshotsEnabled(false) // default is true
         .logGroup(new LogGroup(this, "LogGroup"))
         .build();
Deprecated: AWS CDK v1 has reached End-of-Support on 2023-06-01. This package is no longer being updated, and users should migrate to AWS CDK v2. For more information on how to migrate, see https://docs.aws.amazon.com/cdk/v2/guide/migrating-v2.html