com.amazonaws.services.kinesis.clientlibrary.lib.worker

Class ProcessTask

java.lang.Object

com.amazonaws.services.kinesis.clientlibrary.lib.worker.ProcessTask

All Implemented Interfaces:

ITask, Callable<TaskResult>

public class ProcessTask
extends Object
implements ITask

Task for fetching data records and invoking processRecords() on the record processor instance.

Constructor Summary

Constructors

Constructor and Description
ProcessTask(ShardInfo shardInfo, StreamConfig streamConfig, IRecordProcessor recordProcessor, RecordProcessorCheckpointer recordProcessorCheckpointer, IDataFetcher dataFetcher, long backoffTimeMillis, boolean skipShardSyncAtWorkerInitializationIfLeasesExist, GetRecordsCache getRecordsCache)
ProcessTask(ShardInfo shardInfo, StreamConfig streamConfig, IRecordProcessor recordProcessor, RecordProcessorCheckpointer recordProcessorCheckpointer, IDataFetcher dataFetcher, long backoffTimeMillis, boolean skipShardSyncAtWorkerInitializationIfLeasesExist, com.amazonaws.services.kinesis.clientlibrary.lib.worker.ThrottlingReporter throttlingReporter, GetRecordsCache getRecordsCache)

Method Summary

Modifier and Type	Method and Description
TaskResult	call() Perform task logic.
TaskType	getTaskType()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ProcessTask

public ProcessTask(ShardInfo shardInfo,
                   StreamConfig streamConfig,
                   IRecordProcessor recordProcessor,
                   RecordProcessorCheckpointer recordProcessorCheckpointer,
                   IDataFetcher dataFetcher,
                   long backoffTimeMillis,
                   boolean skipShardSyncAtWorkerInitializationIfLeasesExist,
                   GetRecordsCache getRecordsCache)

Parameters:

shardInfo - contains information about the shard

streamConfig - Stream configuration

recordProcessor - Record processor used to process the data records for the shard

recordProcessorCheckpointer - Passed to the RecordProcessor so it can checkpoint progress

dataFetcher - Kinesis data fetcher (used to fetch records from Kinesis)

backoffTimeMillis - backoff time when catching exceptions

getRecordsCache - The retrieval strategy for fetching records from kinesis

ProcessTask

public ProcessTask(ShardInfo shardInfo,
                   StreamConfig streamConfig,
                   IRecordProcessor recordProcessor,
                   RecordProcessorCheckpointer recordProcessorCheckpointer,
                   IDataFetcher dataFetcher,
                   long backoffTimeMillis,
                   boolean skipShardSyncAtWorkerInitializationIfLeasesExist,
                   com.amazonaws.services.kinesis.clientlibrary.lib.worker.ThrottlingReporter throttlingReporter,
                   GetRecordsCache getRecordsCache)

Parameters:

shardInfo - contains information about the shard

streamConfig - Stream configuration

recordProcessor - Record processor used to process the data records for the shard

recordProcessorCheckpointer - Passed to the RecordProcessor so it can checkpoint progress

dataFetcher - Kinesis data fetcher (used to fetch records from Kinesis)

backoffTimeMillis - backoff time when catching exceptions

throttlingReporter - determines how throttling events should be reported in the log.

Method Detail

call

public TaskResult call()

Description copied from interface: ITask

Perform task logic. E.g. perform set up (e.g. fetch records) and invoke a callback (e.g. processRecords() API).

Specified by:

call in interface ITask

Specified by:

call in interface Callable<TaskResult>

Returns:

TaskResult (captures any exceptions encountered during execution of the task)

getTaskType

public TaskType getTaskType()

Specified by:

getTaskType in interface ITask

Returns:

TaskType