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/**
* Copyright (C) 2016-2019 Expedia, Inc.
*
* 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 com.hotels.road.client.partitioning;
import static java.util.concurrent.TimeUnit.MINUTES;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.function.Function;
import java.util.function.Supplier;
import com.fasterxml.jackson.databind.JsonNode;
import lombok.NonNull;
import com.hotels.road.client.OnrampOptions;
import com.hotels.road.client.RoadClient;
import com.hotels.road.client.simple.SimpleRoadClient;
import com.hotels.road.partition.MessageHashCodeFunctionSupplier;
import com.hotels.road.rest.model.StandardResponse;
public class PartitionerFactory {
public CloseableFunction> newInstance(
OnrampOptions options,
int bufferSize,
int maxBatchSize,
@NonNull EnqueueBehaviour enqueueBehaviour) {
DefinitionSupplier definitionSupplier = new DefinitionSupplier(options);
PartitionPathSupplier partitionPathSupplier = new PartitionPathSupplier(definitionSupplier);
MessageHashCodeFunctionSupplier hashCodeFunctionSupplier = new MessageHashCodeFunctionSupplier(partitionPathSupplier);
ScheduledSupplier> hasherSupplier = new ScheduledSupplier<>(hashCodeFunctionSupplier,
5, MINUTES);
RoadClient client = new SimpleRoadClient<>(options);
MessagePartitioner> partitioner = new MessagePartitioner<>(
hasherSupplier, listFilledWith(options.getThreads(),
() -> new MessageBatcher<>(bufferSize, maxBatchSize, enqueueBehaviour, client::sendMessages)));
Function> function = partitioner.compose(options.getObjectMapper()::valueToTree);
return new CloseableFunction>() {
@Override
public CompletableFuture apply(@NonNull T message) {
return function.apply(message);
}
@Override
public void close() throws Exception {
partitioner.close();
hasherSupplier.close();
client.close();
}
};
}
private List listFilledWith(int size, Supplier supplier) {
List list = new ArrayList<>(size);
for (int i = 0; i < size; i++) {
list.add(supplier.get());
}
return list;
}
}