/
PollingConfig.java
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/
PollingConfig.java
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/*
* Copyright 2019 Amazon.com, Inc. or its affiliates.
* Licensed under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License 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 software.amazon.kinesis.retrieval.polling;
import java.time.Duration;
import java.util.Optional;
import java.util.function.Function;
import lombok.AccessLevel;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.NonNull;
import lombok.Setter;
import lombok.ToString;
import lombok.experimental.Accessors;
import software.amazon.awssdk.services.kinesis.KinesisAsyncClient;
import software.amazon.awssdk.services.kinesis.model.GetRecordsRequest;
import software.amazon.kinesis.retrieval.DataFetcherProviderConfig;
import software.amazon.kinesis.retrieval.RecordsFetcherFactory;
import software.amazon.kinesis.retrieval.RetrievalFactory;
import software.amazon.kinesis.retrieval.RetrievalSpecificConfig;
@Accessors(fluent = true)
@Getter
@Setter
@ToString
@EqualsAndHashCode
public class PollingConfig implements RetrievalSpecificConfig {
public static final Duration DEFAULT_REQUEST_TIMEOUT = Duration.ofSeconds(30);
public static final int DEFAULT_MAX_RECORDS = 10000;
/**
* Configurable functional interface to override the existing DataFetcher.
*/
Function<DataFetcherProviderConfig, DataFetcher> dataFetcherProvider;
/**
* Name of the Kinesis stream.
*/
private String streamName;
private boolean usePollingConfigIdleTimeValue;
/**
* @param kinesisClient Client used to access Kinesis services.
*/
public PollingConfig(KinesisAsyncClient kinesisClient) {
this.kinesisClient = kinesisClient;
}
/**
* Client used to access to Kinesis service.
*/
@NonNull
private final KinesisAsyncClient kinesisClient;
/**
* Max records to fetch from Kinesis in a single GetRecords call.
*
* <p>
* Default value: 10000
* </p>
*/
private int maxRecords = DEFAULT_MAX_RECORDS;
/**
* @param streamName Name of Kinesis stream.
* @param kinesisClient Client used to access Kinesis serivces.
*/
public PollingConfig(String streamName, KinesisAsyncClient kinesisClient) {
this.kinesisClient = kinesisClient;
this.streamName = streamName;
}
/**
* The value for how long the ShardConsumer should sleep in between calls to
* {@link KinesisAsyncClient#getRecords(GetRecordsRequest)}.
*
* If this is not set using {@link PollingConfig#idleTimeBetweenReadsInMillis},
* it defaults to 1500 ms.
*
* <p>
* Default value: 1500L
* </p>
*/
@Setter(AccessLevel.NONE)
private long idleTimeBetweenReadsInMillis = 1500L;
/**
* Time to wait in seconds before the worker retries to get a record.
*
* <p>
* Default value: {@link Optional#empty()}
* </p>
*/
private Optional<Integer> retryGetRecordsInSeconds = Optional.empty();
/**
* The max number of threads in the records thread pool.
*
* <p>
* Default value: {@link Optional#empty()}
* </p>
*/
private Optional<Integer> maxGetRecordsThreadPool = Optional.empty();
/**
* The factory that creates the RecordsPublisher used to records from Kinesis.
*
* <p>
* Default value: {@link SimpleRecordsFetcherFactory}
* </p>
*/
private RecordsFetcherFactory recordsFetcherFactory = new SimpleRecordsFetcherFactory();
/**
* @Deprecated Use {@link PollingConfig#idleTimeBetweenReadsInMillis} instead
*/
@Deprecated
public void setIdleTimeBetweenReadsInMillis(long idleTimeBetweenReadsInMillis) {
idleTimeBetweenReadsInMillis(idleTimeBetweenReadsInMillis);
}
/**
* Set the value for how long the ShardConsumer should sleep in between calls to
* {@link KinesisAsyncClient#getRecords(GetRecordsRequest)}. If this is not specified here the value provided in
* {@link RecordsFetcherFactory} will be used.
*/
public PollingConfig idleTimeBetweenReadsInMillis(long idleTimeBetweenReadsInMillis) {
usePollingConfigIdleTimeValue = true;
this.idleTimeBetweenReadsInMillis = idleTimeBetweenReadsInMillis;
return this;
}
public PollingConfig maxRecords(int maxRecords) {
if (maxRecords > DEFAULT_MAX_RECORDS) {
throw new IllegalArgumentException(
"maxRecords must be less than or equal to " + DEFAULT_MAX_RECORDS + " but current value is " + maxRecords());
}
this.maxRecords = maxRecords;
return this;
}
/**
* The maximum time to wait for a future request from Kinesis to complete
*/
private Duration kinesisRequestTimeout = DEFAULT_REQUEST_TIMEOUT;
@Override
public RetrievalFactory retrievalFactory() {
// Prioritize the PollingConfig specified value if its updated.
if (usePollingConfigIdleTimeValue) {
recordsFetcherFactory.idleMillisBetweenCalls(idleTimeBetweenReadsInMillis);
}
return new SynchronousBlockingRetrievalFactory(streamName(), kinesisClient(), recordsFetcherFactory,
maxRecords(), kinesisRequestTimeout, dataFetcherProvider);
}
@Override
public void validateState(final boolean isMultiStream) {
if (isMultiStream) {
if (streamName() != null) {
throw new IllegalArgumentException(
"PollingConfig must not have streamName configured in multi-stream mode");
}
}
}
}