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/*
* Copyright 2010-2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.amazonaws.services.kinesis;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.handlers.AsyncHandler;
import com.amazonaws.ClientConfiguration;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
import com.amazonaws.services.kinesis.model.*;
/**
* Asynchronous client for accessing AmazonKinesis.
* All asynchronous calls made using this client are non-blocking. Callers could either
* process the result and handle the exceptions in the worker thread by providing a callback handler
* when making the call, or use the returned Future object to check the result of the call in the calling thread.
* Amazon Kinesis Service API Reference
* Amazon Kinesis is a managed service that scales elastically for real
* time processing of streaming big data.
*
*/
public class AmazonKinesisAsyncClient extends AmazonKinesisClient
implements AmazonKinesisAsync {
/**
* Executor service for executing asynchronous requests.
*/
private ExecutorService executorService;
private static final int DEFAULT_THREAD_POOL_SIZE = 50;
/**
* Constructs a new asynchronous client to invoke service methods on
* AmazonKinesis. A credentials provider chain will be used
* that searches for credentials in this order:
*
* - Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
* - Java System Properties - aws.accessKeyId and aws.secretKey
* - Instance profile credentials delivered through the Amazon EC2 metadata service
*
*
*
* All service calls made using this new client object are blocking, and will not
* return until the service call completes.
*
* @see DefaultAWSCredentialsProviderChain
*/
public AmazonKinesisAsyncClient() {
this(new DefaultAWSCredentialsProviderChain());
}
/**
* Constructs a new asynchronous client to invoke service methods on
* AmazonKinesis. A credentials provider chain will be used
* that searches for credentials in this order:
*
* - Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
* - Java System Properties - aws.accessKeyId and aws.secretKey
* - Instance profile credentials delivered through the Amazon EC2 metadata service
*
*
*
* All service calls made using this new client object are blocking, and will not
* return until the service call completes.
*
* @param clientConfiguration The client configuration options controlling how this
* client connects to AmazonKinesis
* (ex: proxy settings, retry counts, etc.).
*
* @see DefaultAWSCredentialsProviderChain
*/
public AmazonKinesisAsyncClient(ClientConfiguration clientConfiguration) {
this(new DefaultAWSCredentialsProviderChain(), clientConfiguration, Executors.newFixedThreadPool(clientConfiguration.getMaxConnections()));
}
/**
* Constructs a new asynchronous client to invoke service methods on
* AmazonKinesis using the specified AWS account credentials.
* Default client settings will be used, and a fixed size thread pool will be
* created for executing the asynchronous tasks.
*
*
* All calls made using this new client object are non-blocking, and will immediately
* return a Java Future object that the caller can later check to see if the service
* call has actually completed.
*
* @param awsCredentials The AWS credentials (access key ID and secret key) to use
* when authenticating with AWS services.
*/
public AmazonKinesisAsyncClient(AWSCredentials awsCredentials) {
this(awsCredentials, Executors.newFixedThreadPool(DEFAULT_THREAD_POOL_SIZE));
}
/**
* Constructs a new asynchronous client to invoke service methods on
* AmazonKinesis using the specified AWS account credentials
* and executor service. Default client settings will be used.
*
*
* All calls made using this new client object are non-blocking, and will immediately
* return a Java Future object that the caller can later check to see if the service
* call has actually completed.
*
* @param awsCredentials
* The AWS credentials (access key ID and secret key) to use
* when authenticating with AWS services.
* @param executorService
* The executor service by which all asynchronous requests will
* be executed.
*/
public AmazonKinesisAsyncClient(AWSCredentials awsCredentials, ExecutorService executorService) {
super(awsCredentials);
this.executorService = executorService;
}
/**
* Constructs a new asynchronous client to invoke service methods on
* AmazonKinesis using the specified AWS account credentials,
* executor service, and client configuration options.
*
*
* All calls made using this new client object are non-blocking, and will immediately
* return a Java Future object that the caller can later check to see if the service
* call has actually completed.
*
* @param awsCredentials
* The AWS credentials (access key ID and secret key) to use
* when authenticating with AWS services.
* @param clientConfiguration
* Client configuration options (ex: max retry limit, proxy
* settings, etc).
* @param executorService
* The executor service by which all asynchronous requests will
* be executed.
*/
public AmazonKinesisAsyncClient(AWSCredentials awsCredentials,
ClientConfiguration clientConfiguration, ExecutorService executorService) {
super(awsCredentials, clientConfiguration);
this.executorService = executorService;
}
/**
* Constructs a new asynchronous client to invoke service methods on
* AmazonKinesis using the specified AWS account credentials provider.
* Default client settings will be used, and a fixed size thread pool will be
* created for executing the asynchronous tasks.
*
*
* All calls made using this new client object are non-blocking, and will immediately
* return a Java Future object that the caller can later check to see if the service
* call has actually completed.
*
* @param awsCredentialsProvider
* The AWS credentials provider which will provide credentials
* to authenticate requests with AWS services.
*/
public AmazonKinesisAsyncClient(AWSCredentialsProvider awsCredentialsProvider) {
this(awsCredentialsProvider, Executors.newFixedThreadPool(DEFAULT_THREAD_POOL_SIZE));
}
/**
* Constructs a new asynchronous client to invoke service methods on
* AmazonKinesis using the specified AWS account credentials provider
* and executor service. Default client settings will be used.
*
*
* All calls made using this new client object are non-blocking, and will immediately
* return a Java Future object that the caller can later check to see if the service
* call has actually completed.
*
* @param awsCredentialsProvider
* The AWS credentials provider which will provide credentials
* to authenticate requests with AWS services.
* @param executorService
* The executor service by which all asynchronous requests will
* be executed.
*/
public AmazonKinesisAsyncClient(AWSCredentialsProvider awsCredentialsProvider, ExecutorService executorService) {
this(awsCredentialsProvider, new ClientConfiguration(), executorService);
}
/**
* Constructs a new asynchronous client to invoke service methods on
* AmazonKinesis using the specified AWS account credentials
* provider and client configuration options.
*
*
* All calls made using this new client object are non-blocking, and will immediately
* return a Java Future object that the caller can later check to see if the service
* call has actually completed.
*
* @param awsCredentialsProvider
* The AWS credentials provider which will provide credentials
* to authenticate requests with AWS services.
* @param clientConfiguration
* Client configuration options (ex: max retry limit, proxy
* settings, etc).
*/
public AmazonKinesisAsyncClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration) {
this(awsCredentialsProvider, clientConfiguration, Executors.newFixedThreadPool(clientConfiguration.getMaxConnections()));
}
/**
* Constructs a new asynchronous client to invoke service methods on
* AmazonKinesis using the specified AWS account credentials
* provider, executor service, and client configuration options.
*
*
* All calls made using this new client object are non-blocking, and will immediately
* return a Java Future object that the caller can later check to see if the service
* call has actually completed.
*
* @param awsCredentialsProvider
* The AWS credentials provider which will provide credentials
* to authenticate requests with AWS services.
* @param clientConfiguration
* Client configuration options (ex: max retry limit, proxy
* settings, etc).
* @param executorService
* The executor service by which all asynchronous requests will
* be executed.
*/
public AmazonKinesisAsyncClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration, ExecutorService executorService) {
super(awsCredentialsProvider, clientConfiguration);
this.executorService = executorService;
}
/**
* Returns the executor service used by this async client to execute
* requests.
*
* @return The executor service used by this async client to execute
* requests.
*/
public ExecutorService getExecutorService() {
return executorService;
}
/**
* Shuts down the client, releasing all managed resources. This includes
* forcibly terminating all pending asynchronous service calls. Clients who
* wish to give pending asynchronous service calls time to complete should
* call getExecutorService().shutdown() followed by
* getExecutorService().awaitTermination() prior to calling this method.
*/
@Override
public void shutdown() {
super.shutdown();
executorService.shutdownNow();
}
/**
*
* This operation returns the following information about the stream:
* the current status of the stream, the stream Amazon Resource Name
* (ARN), and an array of shard objects that comprise the stream. For
* each shard object there is information about the hash key and sequence
* number ranges that the shard spans, and the IDs of any earlier shards
* that played in a role in a MergeShards or SplitShard operation that
* created the shard. A sequence number is the identifier associated with
* every record ingested in the Amazon Kinesis stream. The sequence
* number is assigned by the Amazon Kinesis service when a record is put
* into the stream.
*
*
* You can limit the number of returned shards using the
* Limit parameter. The number of shards in a stream may be
* too large to return from a single call to DescribeStream
* . You can detect this by using the HasMoreShards flag in
* the returned output. HasMoreShards is set to
* true when there is more data available.
*
*
* If there are more shards available, you can request more shards by
* using the shard ID of the last shard returned by the
* DescribeStream request, in the
* ExclusiveStartShardId parameter in a subsequent request
* to DescribeStream . DescribeStream is a
* paginated operation.
*
*
* DescribeStream has a limit of 10 transactions per second
* per account.
*
*
* @param describeStreamRequest Container for the necessary parameters to
* execute the DescribeStream operation on AmazonKinesis.
*
* @return A Java Future object containing the response from the
* DescribeStream service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future describeStreamAsync(final DescribeStreamRequest describeStreamRequest)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public DescribeStreamResult call() throws Exception {
return describeStream(describeStreamRequest);
}
});
}
/**
*
* This operation returns the following information about the stream:
* the current status of the stream, the stream Amazon Resource Name
* (ARN), and an array of shard objects that comprise the stream. For
* each shard object there is information about the hash key and sequence
* number ranges that the shard spans, and the IDs of any earlier shards
* that played in a role in a MergeShards or SplitShard operation that
* created the shard. A sequence number is the identifier associated with
* every record ingested in the Amazon Kinesis stream. The sequence
* number is assigned by the Amazon Kinesis service when a record is put
* into the stream.
*
*
* You can limit the number of returned shards using the
* Limit parameter. The number of shards in a stream may be
* too large to return from a single call to DescribeStream
* . You can detect this by using the HasMoreShards flag in
* the returned output. HasMoreShards is set to
* true when there is more data available.
*
*
* If there are more shards available, you can request more shards by
* using the shard ID of the last shard returned by the
* DescribeStream request, in the
* ExclusiveStartShardId parameter in a subsequent request
* to DescribeStream . DescribeStream is a
* paginated operation.
*
*
* DescribeStream has a limit of 10 transactions per second
* per account.
*
*
* @param describeStreamRequest Container for the necessary parameters to
* execute the DescribeStream operation on AmazonKinesis.
* @param asyncHandler Asynchronous callback handler for events in the
* life-cycle of the request. Users could provide the implementation of
* the four callback methods in this interface to process the operation
* result or handle the exception.
*
* @return A Java Future object containing the response from the
* DescribeStream service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future describeStreamAsync(
final DescribeStreamRequest describeStreamRequest,
final AsyncHandler asyncHandler)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public DescribeStreamResult call() throws Exception {
DescribeStreamResult result;
try {
result = describeStream(describeStreamRequest);
} catch (Exception ex) {
asyncHandler.onError(ex);
throw ex;
}
asyncHandler.onSuccess(describeStreamRequest, result);
return result;
}
});
}
/**
*
* This operation returns a shard iterator in ShardIterator
* . The shard iterator specifies the position in the shard from which
* you want to start reading data records sequentially. A shard iterator
* specifies this position using the sequence number of a data record in
* a shard. A sequence number is the identifier associated with every
* record ingested in the Amazon Kinesis stream. The sequence number is
* assigned by the Amazon Kinesis service when a record is put into the
* stream.
*
*
* You must specify the shard iterator type in the
* GetShardIterator request. For example, you can set the
* ShardIteratorType parameter to read exactly from the
* position denoted by a specific sequence number by using the
* AT_SEQUENCE_NUMBER shard iterator type, or right after the sequence
* number by using the AFTER_SEQUENCE_NUMBER shard iterator type, using
* sequence numbers returned by earlier PutRecord, GetRecords or
* DescribeStream requests. You can specify the shard iterator type
* TRIM_HORIZON in the request to cause ShardIterator to
* point to the last untrimmed record in the shard in the system, which
* is the oldest data record in the shard. Or you can point to just after
* the most recent record in the shard, by using the shard iterator type
* LATEST, so that you always read the most recent data in the shard.
*
*
* Note: Each shard iterator expires five minutes after it is
* returned to the requester.
*
*
* When you repeatedly read from an Amazon Kinesis stream use a
* GetShardIterator request to get the first shard iterator to to use in
* your first GetRecords request and then use the shard
* iterator returned by the GetRecords request in
* NextShardIterator for subsequent reads. A new shard
* iterator is returned by every GetRecords request in
* NextShardIterator , which you use in the
* ShardIterator parameter of the next
* GetRecords request.
*
*
* If a GetShardIterator request is made too often, you
* will receive a ProvisionedThroughputExceededException .
* For more information about throughput limits, see the
* Amazon Kinesis Developer Guide
* .
*
*
* GetShardIterator can return null for its
* ShardIterator to indicate that the shard has been closed
* and that the requested iterator will return no more data. A shard can
* be closed by a SplitShard or MergeShards operation.
*
*
* GetShardIterator has a limit of 5 transactions per
* second per account per open shard.
*
*
* @param getShardIteratorRequest Container for the necessary parameters
* to execute the GetShardIterator operation on AmazonKinesis.
*
* @return A Java Future object containing the response from the
* GetShardIterator service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future getShardIteratorAsync(final GetShardIteratorRequest getShardIteratorRequest)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public GetShardIteratorResult call() throws Exception {
return getShardIterator(getShardIteratorRequest);
}
});
}
/**
*
* This operation returns a shard iterator in ShardIterator
* . The shard iterator specifies the position in the shard from which
* you want to start reading data records sequentially. A shard iterator
* specifies this position using the sequence number of a data record in
* a shard. A sequence number is the identifier associated with every
* record ingested in the Amazon Kinesis stream. The sequence number is
* assigned by the Amazon Kinesis service when a record is put into the
* stream.
*
*
* You must specify the shard iterator type in the
* GetShardIterator request. For example, you can set the
* ShardIteratorType parameter to read exactly from the
* position denoted by a specific sequence number by using the
* AT_SEQUENCE_NUMBER shard iterator type, or right after the sequence
* number by using the AFTER_SEQUENCE_NUMBER shard iterator type, using
* sequence numbers returned by earlier PutRecord, GetRecords or
* DescribeStream requests. You can specify the shard iterator type
* TRIM_HORIZON in the request to cause ShardIterator to
* point to the last untrimmed record in the shard in the system, which
* is the oldest data record in the shard. Or you can point to just after
* the most recent record in the shard, by using the shard iterator type
* LATEST, so that you always read the most recent data in the shard.
*
*
* Note: Each shard iterator expires five minutes after it is
* returned to the requester.
*
*
* When you repeatedly read from an Amazon Kinesis stream use a
* GetShardIterator request to get the first shard iterator to to use in
* your first GetRecords request and then use the shard
* iterator returned by the GetRecords request in
* NextShardIterator for subsequent reads. A new shard
* iterator is returned by every GetRecords request in
* NextShardIterator , which you use in the
* ShardIterator parameter of the next
* GetRecords request.
*
*
* If a GetShardIterator request is made too often, you
* will receive a ProvisionedThroughputExceededException .
* For more information about throughput limits, see the
* Amazon Kinesis Developer Guide
* .
*
*
* GetShardIterator can return null for its
* ShardIterator to indicate that the shard has been closed
* and that the requested iterator will return no more data. A shard can
* be closed by a SplitShard or MergeShards operation.
*
*
* GetShardIterator has a limit of 5 transactions per
* second per account per open shard.
*
*
* @param getShardIteratorRequest Container for the necessary parameters
* to execute the GetShardIterator operation on AmazonKinesis.
* @param asyncHandler Asynchronous callback handler for events in the
* life-cycle of the request. Users could provide the implementation of
* the four callback methods in this interface to process the operation
* result or handle the exception.
*
* @return A Java Future object containing the response from the
* GetShardIterator service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future getShardIteratorAsync(
final GetShardIteratorRequest getShardIteratorRequest,
final AsyncHandler asyncHandler)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public GetShardIteratorResult call() throws Exception {
GetShardIteratorResult result;
try {
result = getShardIterator(getShardIteratorRequest);
} catch (Exception ex) {
asyncHandler.onError(ex);
throw ex;
}
asyncHandler.onSuccess(getShardIteratorRequest, result);
return result;
}
});
}
/**
*
* This operation puts a data record into an Amazon Kinesis stream from
* a producer. This operation must be called to send data from the
* producer into the Amazon Kinesis stream for real-time ingestion and
* subsequent processing. The PutRecord operation requires
* the name of the stream that captures, stores, and transports the data;
* a partition key; and the data blob itself. The data blob could be a
* segment from a log file, geographic/location data, website clickstream
* data, or any other data type.
*
*
* The partition key is used to distribute data across shards. Amazon
* Kinesis segregates the data records that belong to a data stream into
* multiple shards, using the partition key associated with each data
* record to determine which shard a given data record belongs to.
*
*
* Partition keys are Unicode strings, with a maximum length limit of
* 256 bytes. An MD5 hash function is used to map partition keys to
* 128-bit integer values and to map associated data records to shards
* using the hash key ranges of the shards. You can override hashing the
* partition key to determine the shard by explicitly specifying a hash
* value using the ExplicitHashKey parameter. For more
* information, see the
* Amazon Kinesis Developer Guide
* .
*
*
* PutRecord returns the shard ID of where the data record
* was placed and the sequence number that was assigned to the data
* record.
*
*
* Sequence numbers generally increase over time. To guarantee strictly
* increasing ordering, use the SequenceNumberForOrdering
* parameter. For more information, see the
* Amazon Kinesis Developer Guide
* .
*
*
* If a PutRecord request cannot be processed because of
* insufficient provisioned throughput on the shard involved in the
* request, PutRecord throws
* ProvisionedThroughputExceededException .
*
*
* Data records are accessible for only 24 hours from the time that they
* are added to an Amazon Kinesis stream.
*
*
* @param putRecordRequest Container for the necessary parameters to
* execute the PutRecord operation on AmazonKinesis.
*
* @return A Java Future object containing the response from the
* PutRecord service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future putRecordAsync(final PutRecordRequest putRecordRequest)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public PutRecordResult call() throws Exception {
return putRecord(putRecordRequest);
}
});
}
/**
*
* This operation puts a data record into an Amazon Kinesis stream from
* a producer. This operation must be called to send data from the
* producer into the Amazon Kinesis stream for real-time ingestion and
* subsequent processing. The PutRecord operation requires
* the name of the stream that captures, stores, and transports the data;
* a partition key; and the data blob itself. The data blob could be a
* segment from a log file, geographic/location data, website clickstream
* data, or any other data type.
*
*
* The partition key is used to distribute data across shards. Amazon
* Kinesis segregates the data records that belong to a data stream into
* multiple shards, using the partition key associated with each data
* record to determine which shard a given data record belongs to.
*
*
* Partition keys are Unicode strings, with a maximum length limit of
* 256 bytes. An MD5 hash function is used to map partition keys to
* 128-bit integer values and to map associated data records to shards
* using the hash key ranges of the shards. You can override hashing the
* partition key to determine the shard by explicitly specifying a hash
* value using the ExplicitHashKey parameter. For more
* information, see the
* Amazon Kinesis Developer Guide
* .
*
*
* PutRecord returns the shard ID of where the data record
* was placed and the sequence number that was assigned to the data
* record.
*
*
* Sequence numbers generally increase over time. To guarantee strictly
* increasing ordering, use the SequenceNumberForOrdering
* parameter. For more information, see the
* Amazon Kinesis Developer Guide
* .
*
*
* If a PutRecord request cannot be processed because of
* insufficient provisioned throughput on the shard involved in the
* request, PutRecord throws
* ProvisionedThroughputExceededException .
*
*
* Data records are accessible for only 24 hours from the time that they
* are added to an Amazon Kinesis stream.
*
*
* @param putRecordRequest Container for the necessary parameters to
* execute the PutRecord operation on AmazonKinesis.
* @param asyncHandler Asynchronous callback handler for events in the
* life-cycle of the request. Users could provide the implementation of
* the four callback methods in this interface to process the operation
* result or handle the exception.
*
* @return A Java Future object containing the response from the
* PutRecord service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future putRecordAsync(
final PutRecordRequest putRecordRequest,
final AsyncHandler asyncHandler)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public PutRecordResult call() throws Exception {
PutRecordResult result;
try {
result = putRecord(putRecordRequest);
} catch (Exception ex) {
asyncHandler.onError(ex);
throw ex;
}
asyncHandler.onSuccess(putRecordRequest, result);
return result;
}
});
}
/**
*
* This operation returns one or more data records from a shard. A
* GetRecords operation request can retrieve up to 10 MB of
* data.
*
*
* You specify a shard iterator for the shard that you want to read data
* from in the ShardIterator parameter. The shard iterator
* specifies the position in the shard from which you want to start
* reading data records sequentially. A shard iterator specifies this
* position using the sequence number of a data record in the shard. For
* more information about the shard iterator, see GetShardIterator.
*
*
* GetRecords may return a partial result if the response
* size limit is exceeded. You will get an error, but not a partial
* result if the shard's provisioned throughput is exceeded, the shard
* iterator has expired, or an internal processing failure has occurred.
* Clients can request a smaller amount of data by specifying a maximum
* number of returned records using the Limit parameter. The
* Limit parameter can be set to an integer value of up to
* 10,000. If you set the value to an integer greater than 10,000, you
* will receive InvalidArgumentException .
*
*
* A new shard iterator is returned by every GetRecords
* request in NextShardIterator , which you use in the
* ShardIterator parameter of the next
* GetRecords request. When you repeatedly read from an
* Amazon Kinesis stream use a GetShardIterator request to get the first
* shard iterator to use in your first GetRecords request
* and then use the shard iterator returned in
* NextShardIterator for subsequent reads.
*
*
* GetRecords can return null for the
* NextShardIterator to reflect that the shard has been
* closed and that the requested shard iterator would never have returned
* more data.
*
*
* If no items can be processed because of insufficient provisioned
* throughput on the shard involved in the request,
* GetRecords throws
* ProvisionedThroughputExceededException .
*
*
* @param getRecordsRequest Container for the necessary parameters to
* execute the GetRecords operation on AmazonKinesis.
*
* @return A Java Future object containing the response from the
* GetRecords service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future getRecordsAsync(final GetRecordsRequest getRecordsRequest)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public GetRecordsResult call() throws Exception {
return getRecords(getRecordsRequest);
}
});
}
/**
*
* This operation returns one or more data records from a shard. A
* GetRecords operation request can retrieve up to 10 MB of
* data.
*
*
* You specify a shard iterator for the shard that you want to read data
* from in the ShardIterator parameter. The shard iterator
* specifies the position in the shard from which you want to start
* reading data records sequentially. A shard iterator specifies this
* position using the sequence number of a data record in the shard. For
* more information about the shard iterator, see GetShardIterator.
*
*
* GetRecords may return a partial result if the response
* size limit is exceeded. You will get an error, but not a partial
* result if the shard's provisioned throughput is exceeded, the shard
* iterator has expired, or an internal processing failure has occurred.
* Clients can request a smaller amount of data by specifying a maximum
* number of returned records using the Limit parameter. The
* Limit parameter can be set to an integer value of up to
* 10,000. If you set the value to an integer greater than 10,000, you
* will receive InvalidArgumentException .
*
*
* A new shard iterator is returned by every GetRecords
* request in NextShardIterator , which you use in the
* ShardIterator parameter of the next
* GetRecords request. When you repeatedly read from an
* Amazon Kinesis stream use a GetShardIterator request to get the first
* shard iterator to use in your first GetRecords request
* and then use the shard iterator returned in
* NextShardIterator for subsequent reads.
*
*
* GetRecords can return null for the
* NextShardIterator to reflect that the shard has been
* closed and that the requested shard iterator would never have returned
* more data.
*
*
* If no items can be processed because of insufficient provisioned
* throughput on the shard involved in the request,
* GetRecords throws
* ProvisionedThroughputExceededException .
*
*
* @param getRecordsRequest Container for the necessary parameters to
* execute the GetRecords operation on AmazonKinesis.
* @param asyncHandler Asynchronous callback handler for events in the
* life-cycle of the request. Users could provide the implementation of
* the four callback methods in this interface to process the operation
* result or handle the exception.
*
* @return A Java Future object containing the response from the
* GetRecords service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future getRecordsAsync(
final GetRecordsRequest getRecordsRequest,
final AsyncHandler asyncHandler)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public GetRecordsResult call() throws Exception {
GetRecordsResult result;
try {
result = getRecords(getRecordsRequest);
} catch (Exception ex) {
asyncHandler.onError(ex);
throw ex;
}
asyncHandler.onSuccess(getRecordsRequest, result);
return result;
}
});
}
/**
*
* This operation splits a shard into two new shards in the stream, to
* increase the stream's capacity to ingest and transport data.
* SplitShard is called when there is a need to increase the
* overall capacity of stream because of an expected increase in the
* volume of data records being ingested.
*
*
* SplitShard can also be used when a given shard appears
* to be approaching its maximum utilization, for example, when the set
* of producers sending data into the specific shard are suddenly sending
* more than previously anticipated. You can also call the
* SplitShard operation to increase stream capacity, so that
* more Amazon Kinesis applications can simultaneously read data from the
* stream for real-time processing.
*
*
* The SplitShard operation requires that you specify the
* shard to be split and the new hash key, which is the position in the
* shard where the shard gets split in two. In many cases, the new hash
* key might simply be the average of the beginning and ending hash key,
* but it can be any hash key value in the range being mapped into the
* shard. For more information about splitting shards, see the
* Amazon Kinesis Developer Guide
* .
*
*
* You can use the DescribeStream operation to determine the shard ID
* and hash key values for the ShardToSplit and
* NewStartingHashKey parameters that are specified in the
* SplitShard request.
*
*
* SplitShard is an asynchronous operation. Upon receiving
* a SplitShard request, Amazon Kinesis immediately returns
* a response and sets the stream status to UPDATING. After the operation
* is completed, Amazon Kinesis sets the stream status to ACTIVE. Read
* and write operations continue to work while the stream is in the
* UPDATING state.
*
*
* You can use DescribeStream to check the status of the
* stream, which is returned in StreamStatus . If the stream
* is in the ACTIVE state, you can call SplitShard . If a
* stream is in CREATING or UPDATING or DELETING states, then Amazon
* Kinesis returns a ResourceInUseException .
*
*
* If the specified stream does not exist, Amazon Kinesis returns a
* ResourceNotFoundException . If you try to create more
* shards than are authorized for your account, you receive a
* LimitExceededException .
*
*
* Note: The default limit for an AWS account is 10 shards per
* stream. If you need to create a stream with more than 10 shards,
* contact AWS Support
* to increase the limit on your account.
*
*
* If you try to operate on too many streams in parallel using
* CreateStream, DeleteStream, MergeShards or SplitShard, you will
* receive a LimitExceededException .
*
*
* SplitShard has limit of 5 transactions per second per
* account.
*
*
* @param splitShardRequest Container for the necessary parameters to
* execute the SplitShard operation on AmazonKinesis.
*
* @return A Java Future object containing the response from the
* SplitShard service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future splitShardAsync(final SplitShardRequest splitShardRequest)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public Void call() throws Exception {
splitShard(splitShardRequest);
return null;
}
});
}
/**
*
* This operation splits a shard into two new shards in the stream, to
* increase the stream's capacity to ingest and transport data.
* SplitShard is called when there is a need to increase the
* overall capacity of stream because of an expected increase in the
* volume of data records being ingested.
*
*
* SplitShard can also be used when a given shard appears
* to be approaching its maximum utilization, for example, when the set
* of producers sending data into the specific shard are suddenly sending
* more than previously anticipated. You can also call the
* SplitShard operation to increase stream capacity, so that
* more Amazon Kinesis applications can simultaneously read data from the
* stream for real-time processing.
*
*
* The SplitShard operation requires that you specify the
* shard to be split and the new hash key, which is the position in the
* shard where the shard gets split in two. In many cases, the new hash
* key might simply be the average of the beginning and ending hash key,
* but it can be any hash key value in the range being mapped into the
* shard. For more information about splitting shards, see the
* Amazon Kinesis Developer Guide
* .
*
*
* You can use the DescribeStream operation to determine the shard ID
* and hash key values for the ShardToSplit and
* NewStartingHashKey parameters that are specified in the
* SplitShard request.
*
*
* SplitShard is an asynchronous operation. Upon receiving
* a SplitShard request, Amazon Kinesis immediately returns
* a response and sets the stream status to UPDATING. After the operation
* is completed, Amazon Kinesis sets the stream status to ACTIVE. Read
* and write operations continue to work while the stream is in the
* UPDATING state.
*
*
* You can use DescribeStream to check the status of the
* stream, which is returned in StreamStatus . If the stream
* is in the ACTIVE state, you can call SplitShard . If a
* stream is in CREATING or UPDATING or DELETING states, then Amazon
* Kinesis returns a ResourceInUseException .
*
*
* If the specified stream does not exist, Amazon Kinesis returns a
* ResourceNotFoundException . If you try to create more
* shards than are authorized for your account, you receive a
* LimitExceededException .
*
*
* Note: The default limit for an AWS account is 10 shards per
* stream. If you need to create a stream with more than 10 shards,
* contact AWS Support
* to increase the limit on your account.
*
*
* If you try to operate on too many streams in parallel using
* CreateStream, DeleteStream, MergeShards or SplitShard, you will
* receive a LimitExceededException .
*
*
* SplitShard has limit of 5 transactions per second per
* account.
*
*
* @param splitShardRequest Container for the necessary parameters to
* execute the SplitShard operation on AmazonKinesis.
* @param asyncHandler Asynchronous callback handler for events in the
* life-cycle of the request. Users could provide the implementation of
* the four callback methods in this interface to process the operation
* result or handle the exception.
*
* @return A Java Future object containing the response from the
* SplitShard service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future splitShardAsync(
final SplitShardRequest splitShardRequest,
final AsyncHandler asyncHandler)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public Void call() throws Exception {
try {
splitShard(splitShardRequest);
} catch (Exception ex) {
asyncHandler.onError(ex);
throw ex;
}
asyncHandler.onSuccess(splitShardRequest, null);
return null;
}
});
}
/**
*
* This operation adds a new Amazon Kinesis stream to your AWS account.
* A stream captures and transports data records that are continuously
* emitted from different data sources or producers . Scale-out
* within an Amazon Kinesis stream is explicitly supported by means of
* shards, which are uniquely identified groups of data records in an
* Amazon Kinesis stream.
*
*
* You specify and control the number of shards that a stream is
* composed of. Each open shard can support up to 5 read transactions per
* second, up to a maximum total of 2 MB of data read per second. Each
* shard can support up to 1000 write transactions per second, up to a
* maximum total of 1 MB data written per second. You can add shards to a
* stream if the amount of data input increases and you can remove shards
* if the amount of data input decreases.
*
*
* The stream name identifies the stream. The name is scoped to the AWS
* account used by the application. It is also scoped by region. That is,
* two streams in two different accounts can have the same name, and two
* streams in the same account, but in two different regions, can have
* the same name.
*
*
* CreateStream is an asynchronous operation. Upon
* receiving a CreateStream request, Amazon Kinesis
* immediately returns and sets the stream status to CREATING. After the
* stream is created, Amazon Kinesis sets the stream status to ACTIVE.
* You should perform read and write operations only on an ACTIVE stream.
*
*
* You receive a LimitExceededException when making a
* CreateStream request if you try to do one of the
* following:
*
*
*
* - Have more than five streams in the CREATING state at any point in
* time.
* - Create more shards than are authorized for your account.
*
*
*
* Note: The default limit for an AWS account is 10 shards per
* stream. If you need to create a stream with more than 10 shards,
* contact AWS Support
* to increase the limit on your account.
*
*
* You can use the DescribeStream operation to check the
* stream status, which is returned in StreamStatus .
*
*
* CreateStream has a limit of 5 transactions per second
* per account.
*
*
* @param createStreamRequest Container for the necessary parameters to
* execute the CreateStream operation on AmazonKinesis.
*
* @return A Java Future object containing the response from the
* CreateStream service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future createStreamAsync(final CreateStreamRequest createStreamRequest)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public Void call() throws Exception {
createStream(createStreamRequest);
return null;
}
});
}
/**
*
* This operation adds a new Amazon Kinesis stream to your AWS account.
* A stream captures and transports data records that are continuously
* emitted from different data sources or producers . Scale-out
* within an Amazon Kinesis stream is explicitly supported by means of
* shards, which are uniquely identified groups of data records in an
* Amazon Kinesis stream.
*
*
* You specify and control the number of shards that a stream is
* composed of. Each open shard can support up to 5 read transactions per
* second, up to a maximum total of 2 MB of data read per second. Each
* shard can support up to 1000 write transactions per second, up to a
* maximum total of 1 MB data written per second. You can add shards to a
* stream if the amount of data input increases and you can remove shards
* if the amount of data input decreases.
*
*
* The stream name identifies the stream. The name is scoped to the AWS
* account used by the application. It is also scoped by region. That is,
* two streams in two different accounts can have the same name, and two
* streams in the same account, but in two different regions, can have
* the same name.
*
*
* CreateStream is an asynchronous operation. Upon
* receiving a CreateStream request, Amazon Kinesis
* immediately returns and sets the stream status to CREATING. After the
* stream is created, Amazon Kinesis sets the stream status to ACTIVE.
* You should perform read and write operations only on an ACTIVE stream.
*
*
* You receive a LimitExceededException when making a
* CreateStream request if you try to do one of the
* following:
*
*
*
* - Have more than five streams in the CREATING state at any point in
* time.
* - Create more shards than are authorized for your account.
*
*
*
* Note: The default limit for an AWS account is 10 shards per
* stream. If you need to create a stream with more than 10 shards,
* contact AWS Support
* to increase the limit on your account.
*
*
* You can use the DescribeStream operation to check the
* stream status, which is returned in StreamStatus .
*
*
* CreateStream has a limit of 5 transactions per second
* per account.
*
*
* @param createStreamRequest Container for the necessary parameters to
* execute the CreateStream operation on AmazonKinesis.
* @param asyncHandler Asynchronous callback handler for events in the
* life-cycle of the request. Users could provide the implementation of
* the four callback methods in this interface to process the operation
* result or handle the exception.
*
* @return A Java Future object containing the response from the
* CreateStream service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future createStreamAsync(
final CreateStreamRequest createStreamRequest,
final AsyncHandler asyncHandler)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public Void call() throws Exception {
try {
createStream(createStreamRequest);
} catch (Exception ex) {
asyncHandler.onError(ex);
throw ex;
}
asyncHandler.onSuccess(createStreamRequest, null);
return null;
}
});
}
/**
*
* This operation deletes a stream and all of its shards and data. You
* must shut down any applications that are operating on the stream
* before you delete the stream. If an application attempts to operate on
* a deleted stream, it will receive the exception
* ResourceNotFoundException .
*
*
* If the stream is in the ACTIVE state, you can delete it. After a
* DeleteStream request, the specified stream is in the
* DELETING state until Amazon Kinesis completes the deletion.
*
*
* Note: Amazon Kinesis might continue to accept data read and
* write operations, such as PutRecord and GetRecords, on a stream in the
* DELETING state until the stream deletion is complete.
*
*
* When you delete a stream, any shards in that stream are also deleted.
*
*
* You can use the DescribeStream operation to check the state of the
* stream, which is returned in StreamStatus .
*
*
* DeleteStream has a limit of 5 transactions per second
* per account.
*
*
* @param deleteStreamRequest Container for the necessary parameters to
* execute the DeleteStream operation on AmazonKinesis.
*
* @return A Java Future object containing the response from the
* DeleteStream service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future deleteStreamAsync(final DeleteStreamRequest deleteStreamRequest)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public Void call() throws Exception {
deleteStream(deleteStreamRequest);
return null;
}
});
}
/**
*
* This operation deletes a stream and all of its shards and data. You
* must shut down any applications that are operating on the stream
* before you delete the stream. If an application attempts to operate on
* a deleted stream, it will receive the exception
* ResourceNotFoundException .
*
*
* If the stream is in the ACTIVE state, you can delete it. After a
* DeleteStream request, the specified stream is in the
* DELETING state until Amazon Kinesis completes the deletion.
*
*
* Note: Amazon Kinesis might continue to accept data read and
* write operations, such as PutRecord and GetRecords, on a stream in the
* DELETING state until the stream deletion is complete.
*
*
* When you delete a stream, any shards in that stream are also deleted.
*
*
* You can use the DescribeStream operation to check the state of the
* stream, which is returned in StreamStatus .
*
*
* DeleteStream has a limit of 5 transactions per second
* per account.
*
*
* @param deleteStreamRequest Container for the necessary parameters to
* execute the DeleteStream operation on AmazonKinesis.
* @param asyncHandler Asynchronous callback handler for events in the
* life-cycle of the request. Users could provide the implementation of
* the four callback methods in this interface to process the operation
* result or handle the exception.
*
* @return A Java Future object containing the response from the
* DeleteStream service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future deleteStreamAsync(
final DeleteStreamRequest deleteStreamRequest,
final AsyncHandler asyncHandler)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public Void call() throws Exception {
try {
deleteStream(deleteStreamRequest);
} catch (Exception ex) {
asyncHandler.onError(ex);
throw ex;
}
asyncHandler.onSuccess(deleteStreamRequest, null);
return null;
}
});
}
/**
*
* This operation returns an array of the names of all the streams that
* are associated with the AWS account making the
* ListStreams request. A given AWS account can have many
* streams active at one time.
*
*
* The number of streams may be too large to return from a single call
* to ListStreams . You can limit the number of returned
* streams using the Limit parameter. If you do not specify
* a value for the Limit parameter, Amazon Kinesis uses the
* default limit, which is currently 10.
*
*
* You can detect if there are more streams available to list by using
* the HasMoreStreams flag from the returned output. If
* there are more streams available, you can request more streams by
* using the name of the last stream returned by the
* ListStreams request in the
* ExclusiveStartStreamName parameter in a subsequent
* request to ListStreams . The group of stream names
* returned by the subsequent request is then added to the list. You can
* continue this process until all the stream names have been collected
* in the list.
*
*
* ListStreams has a limit of 5 transactions per second per
* account.
*
*
* @param listStreamsRequest Container for the necessary parameters to
* execute the ListStreams operation on AmazonKinesis.
*
* @return A Java Future object containing the response from the
* ListStreams service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future listStreamsAsync(final ListStreamsRequest listStreamsRequest)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public ListStreamsResult call() throws Exception {
return listStreams(listStreamsRequest);
}
});
}
/**
*
* This operation returns an array of the names of all the streams that
* are associated with the AWS account making the
* ListStreams request. A given AWS account can have many
* streams active at one time.
*
*
* The number of streams may be too large to return from a single call
* to ListStreams . You can limit the number of returned
* streams using the Limit parameter. If you do not specify
* a value for the Limit parameter, Amazon Kinesis uses the
* default limit, which is currently 10.
*
*
* You can detect if there are more streams available to list by using
* the HasMoreStreams flag from the returned output. If
* there are more streams available, you can request more streams by
* using the name of the last stream returned by the
* ListStreams request in the
* ExclusiveStartStreamName parameter in a subsequent
* request to ListStreams . The group of stream names
* returned by the subsequent request is then added to the list. You can
* continue this process until all the stream names have been collected
* in the list.
*
*
* ListStreams has a limit of 5 transactions per second per
* account.
*
*
* @param listStreamsRequest Container for the necessary parameters to
* execute the ListStreams operation on AmazonKinesis.
* @param asyncHandler Asynchronous callback handler for events in the
* life-cycle of the request. Users could provide the implementation of
* the four callback methods in this interface to process the operation
* result or handle the exception.
*
* @return A Java Future object containing the response from the
* ListStreams service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future listStreamsAsync(
final ListStreamsRequest listStreamsRequest,
final AsyncHandler asyncHandler)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public ListStreamsResult call() throws Exception {
ListStreamsResult result;
try {
result = listStreams(listStreamsRequest);
} catch (Exception ex) {
asyncHandler.onError(ex);
throw ex;
}
asyncHandler.onSuccess(listStreamsRequest, result);
return result;
}
});
}
/**
*
* This operation merges two adjacent shards in a stream and combines
* them into a single shard to reduce the stream's capacity to ingest and
* transport data. Two shards are considered adjacent if the union of the
* hash key ranges for the two shards form a contiguous set with no gaps.
* For example, if you have two shards, one with a hash key range of
* 276...381 and the other with a hash key range of 382...454, then you
* could merge these two shards into a single shard that would have a
* hash key range of 276...454. After the merge, the single child shard
* receives data for all hash key values covered by the two parent
* shards.
*
*
* MergeShards is called when there is a need to reduce the
* overall capacity of a stream because of excess capacity that is not
* being used. The operation requires that you specify the shard to be
* merged and the adjacent shard for a given stream. For more information
* about merging shards, see the
* Amazon Kinesis Developer Guide
* .
*
*
* If the stream is in the ACTIVE state, you can call
* MergeShards . If a stream is in CREATING or UPDATING or
* DELETING states, then Amazon Kinesis returns a
* ResourceInUseException . If the specified stream does not
* exist, Amazon Kinesis returns a ResourceNotFoundException
* .
*
*
* You can use the DescribeStream operation to check the state of the
* stream, which is returned in StreamStatus .
*
*
* MergeShards is an asynchronous operation. Upon receiving
* a MergeShards request, Amazon Kinesis immediately returns
* a response and sets the StreamStatus to UPDATING. After
* the operation is completed, Amazon Kinesis sets the
* StreamStatus to ACTIVE. Read and write operations
* continue to work while the stream is in the UPDATING state.
*
*
* You use the DescribeStream operation to determine the shard IDs that
* are specified in the MergeShards request.
*
*
* If you try to operate on too many streams in parallel using
* CreateStream, DeleteStream, MergeShards or SplitShard,
* you will receive a LimitExceededException .
*
*
* MergeShards has limit of 5 transactions per second per
* account.
*
*
* @param mergeShardsRequest Container for the necessary parameters to
* execute the MergeShards operation on AmazonKinesis.
*
* @return A Java Future object containing the response from the
* MergeShards service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future mergeShardsAsync(final MergeShardsRequest mergeShardsRequest)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public Void call() throws Exception {
mergeShards(mergeShardsRequest);
return null;
}
});
}
/**
*
* This operation merges two adjacent shards in a stream and combines
* them into a single shard to reduce the stream's capacity to ingest and
* transport data. Two shards are considered adjacent if the union of the
* hash key ranges for the two shards form a contiguous set with no gaps.
* For example, if you have two shards, one with a hash key range of
* 276...381 and the other with a hash key range of 382...454, then you
* could merge these two shards into a single shard that would have a
* hash key range of 276...454. After the merge, the single child shard
* receives data for all hash key values covered by the two parent
* shards.
*
*
* MergeShards is called when there is a need to reduce the
* overall capacity of a stream because of excess capacity that is not
* being used. The operation requires that you specify the shard to be
* merged and the adjacent shard for a given stream. For more information
* about merging shards, see the
* Amazon Kinesis Developer Guide
* .
*
*
* If the stream is in the ACTIVE state, you can call
* MergeShards . If a stream is in CREATING or UPDATING or
* DELETING states, then Amazon Kinesis returns a
* ResourceInUseException . If the specified stream does not
* exist, Amazon Kinesis returns a ResourceNotFoundException
* .
*
*
* You can use the DescribeStream operation to check the state of the
* stream, which is returned in StreamStatus .
*
*
* MergeShards is an asynchronous operation. Upon receiving
* a MergeShards request, Amazon Kinesis immediately returns
* a response and sets the StreamStatus to UPDATING. After
* the operation is completed, Amazon Kinesis sets the
* StreamStatus to ACTIVE. Read and write operations
* continue to work while the stream is in the UPDATING state.
*
*
* You use the DescribeStream operation to determine the shard IDs that
* are specified in the MergeShards request.
*
*
* If you try to operate on too many streams in parallel using
* CreateStream, DeleteStream, MergeShards or SplitShard,
* you will receive a LimitExceededException .
*
*
* MergeShards has limit of 5 transactions per second per
* account.
*
*
* @param mergeShardsRequest Container for the necessary parameters to
* execute the MergeShards operation on AmazonKinesis.
* @param asyncHandler Asynchronous callback handler for events in the
* life-cycle of the request. Users could provide the implementation of
* the four callback methods in this interface to process the operation
* result or handle the exception.
*
* @return A Java Future object containing the response from the
* MergeShards service method, as returned by AmazonKinesis.
*
*
* @throws AmazonClientException
* If any internal errors are encountered inside the client while
* attempting to make the request or handle the response. For example
* if a network connection is not available.
* @throws AmazonServiceException
* If an error response is returned by AmazonKinesis indicating
* either a problem with the data in the request, or a server side issue.
*/
public Future mergeShardsAsync(
final MergeShardsRequest mergeShardsRequest,
final AsyncHandler asyncHandler)
throws AmazonServiceException, AmazonClientException {
return executorService.submit(new Callable() {
public Void call() throws Exception {
try {
mergeShards(mergeShardsRequest);
} catch (Exception ex) {
asyncHandler.onError(ex);
throw ex;
}
asyncHandler.onSuccess(mergeShardsRequest, null);
return null;
}
});
}
}