com.hazelcast.jet.examples.protobuf.ProtobufSerializerHookAdapter Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, Hazelcast, Inc. 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.
* 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.hazelcast.jet.examples.protobuf;
import com.hazelcast.jet.Jet;
import com.hazelcast.jet.JetInstance;
import com.hazelcast.jet.pipeline.Pipeline;
import com.hazelcast.jet.pipeline.Sinks;
import com.hazelcast.jet.pipeline.test.TestSources;
import com.hazelcast.jet.protobuf.Messages.Product;
import com.hazelcast.jet.protobuf.ProtobufSerializerHook;
/**
* Demonstrates the usage of Protobuf serializer hook adapter.
*
* {@link ProductSerializerHook} is discovered & registered via
* 'META-INF/services/com.hazelcast.SerializerHook' and then used to
* serialize local {@link com.hazelcast.collection.IList} items.
*/
public class ProtobufSerializerHookAdapter {
private static final String LIST_NAME = "products";
private JetInstance jet;
public static void main(String[] args) {
new ProtobufSerializerHookAdapter().go();
}
private void go() {
try {
setup();
jet.newJob(buildPipeline()).join();
} finally {
Jet.shutdownAll();
}
}
private void setup() {
jet = Jet.bootstrappedInstance();
}
private static Pipeline buildPipeline() {
Pipeline p = Pipeline.create();
p.readFrom(TestSources.items("jam", "marmalade"))
.map(name -> Product.newBuilder().setName(name).build())
.writeTo(Sinks.list(LIST_NAME));
return p;
}
@SuppressWarnings("unused")
private static class ProductSerializerHook extends ProtobufSerializerHook {
private static final int TYPE_ID = 17;
ProductSerializerHook() {
super(Product.class, TYPE_ID);
}
}
}