Java tutorial
/* * Copyright (C) 2012 Facebook, 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.facebook.swift.codec.guice; import com.facebook.swift.codec.BonkConstructor; import com.facebook.swift.codec.ThriftCodec; import com.facebook.swift.codec.metadata.ThriftType; import com.google.common.base.Preconditions; import com.google.common.collect.ImmutableList; import com.google.common.collect.ImmutableMap; import com.google.inject.Binder; import com.google.inject.Guice; import com.google.inject.Injector; import com.google.inject.Key; import com.google.inject.Module; import com.google.inject.Stage; import com.google.inject.TypeLiteral; import org.apache.thrift.protocol.TCompactProtocol; import org.apache.thrift.protocol.TProtocol; import org.apache.thrift.transport.TMemoryBuffer; import org.testng.annotations.Test; import java.util.List; import java.util.Map; import static com.facebook.swift.codec.guice.ThriftCodecBinder.thriftCodecBinder; import static org.testng.Assert.assertEquals; import static org.testng.Assert.assertNotNull; public class TestThriftCodecModule { @Test public void testThriftClientAndServerModules() throws Exception { Injector injector = Guice.createInjector(Stage.PRODUCTION, new ThriftCodecModule(), new Module() { @Override public void configure(Binder binder) { thriftCodecBinder(binder).bindThriftCodec(BonkConstructor.class); thriftCodecBinder(binder).bindListThriftCodec(BonkConstructor.class); thriftCodecBinder(binder).bindMapThriftCodec(String.class, BonkConstructor.class); thriftCodecBinder(binder).bindThriftCodec(new TypeLiteral<Map<Integer, List<String>>>() { }); thriftCodecBinder(binder).bindCustomThriftCodec(new ThriftCodec<ValueClass>() { @Override public ThriftType getType() { return new ThriftType(ThriftType.STRING, ValueClass.class); } @Override public ValueClass read(TProtocol protocol) throws Exception { return new ValueClass(protocol.readString()); } @Override public void write(ValueClass value, TProtocol protocol) throws Exception { protocol.writeString(value.getValue()); } }); } }); testRoundTripSerialize(injector.getInstance(Key.get(new TypeLiteral<ThriftCodec<BonkConstructor>>() { })), new BonkConstructor("message", 42)); testRoundTripSerialize(injector.getInstance(Key.get(new TypeLiteral<ThriftCodec<List<BonkConstructor>>>() { })), ImmutableList.of(new BonkConstructor("one", 1), new BonkConstructor("two", 2))); testRoundTripSerialize( injector.getInstance(Key.get(new TypeLiteral<ThriftCodec<Map<String, BonkConstructor>>>() { })), ImmutableMap.of("uno", new BonkConstructor("one", 1), "dos", new BonkConstructor("two", 2))); testRoundTripSerialize( injector.getInstance(Key.get(new TypeLiteral<ThriftCodec<Map<Integer, List<String>>>>() { })), ImmutableMap.<Integer, List<String>>of(1, ImmutableList.of("one", "uno"), 2, ImmutableList.of("two", "dos"))); testRoundTripSerialize(injector.getInstance(Key.get(new TypeLiteral<ThriftCodec<ValueClass>>() { })), new ValueClass("my value")); } public static <T> void testRoundTripSerialize(ThriftCodec<T> codec, T value) throws Exception { // write value TMemoryBuffer transport = new TMemoryBuffer(10 * 1024); TCompactProtocol protocol = new TCompactProtocol(transport); codec.write(value, protocol); // read value back T copy = codec.read(protocol); assertNotNull(copy); // verify they are the same assertEquals(copy, value); } public static class ValueClass { private final String value; public ValueClass(String value) { Preconditions.checkNotNull(value, "value is null"); this.value = value; } public String getValue() { return value; } @Override public boolean equals(Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } ValueClass that = (ValueClass) o; if (!value.equals(that.value)) { return false; } return true; } @Override public int hashCode() { return value.hashCode(); } @Override public String toString() { final StringBuilder sb = new StringBuilder(); sb.append("ValueClass"); sb.append("{value='").append(value).append('\''); sb.append('}'); return sb.toString(); } } }