HDDS-11650. ContainerId list to track all containers created in a datanode #7402
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you 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 org.apache.hadoop.hdds.utils.db; | ||
|
|
||
| import org.apache.ratis.thirdparty.com.google.protobuf.ProtocolMessageEnum; | ||
| import jakarta.annotation.Nonnull; | ||
|
|
||
| import java.io.IOException; | ||
| import java.lang.reflect.InvocationTargetException; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.concurrent.ConcurrentMap; | ||
|
|
||
| /** | ||
| * Codecs to serialize/deserialize Protobuf v2 enums. | ||
| */ | ||
| public final class Proto2EnumCodec<M extends ProtocolMessageEnum> | ||
| implements Codec<M> { | ||
| private static final ConcurrentMap<Class<? extends ProtocolMessageEnum>, | ||
| Codec<? extends ProtocolMessageEnum>> CODECS | ||
| = new ConcurrentHashMap<>(); | ||
| private static final IntegerCodec INTEGER_CODEC = IntegerCodec.get(); | ||
|
|
||
| /** | ||
| * @return the {@link Codec} for the given class. | ||
| */ | ||
| public static <T extends ProtocolMessageEnum> Codec<T> get(T t) { | ||
| final Codec<?> codec = CODECS.computeIfAbsent(t.getClass(), | ||
| key -> new Proto2EnumCodec<>(t)); | ||
| return (Codec<T>) codec; | ||
| } | ||
|
|
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| private final Class<M> clazz; | ||
|
|
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| private Proto2EnumCodec(M m) { | ||
| this.clazz = (Class<M>) m.getClass(); | ||
| } | ||
|
|
||
| @Override | ||
| public Class<M> getTypeClass() { | ||
| return clazz; | ||
| } | ||
|
|
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| @Override | ||
| public boolean supportCodecBuffer() { | ||
| return INTEGER_CODEC.supportCodecBuffer(); | ||
| } | ||
|
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| @Override | ||
| public CodecBuffer toCodecBuffer(@Nonnull M value, | ||
| CodecBuffer.Allocator allocator) throws IOException { | ||
| return INTEGER_CODEC.toCodecBuffer(value.getNumber(), allocator); | ||
| } | ||
|
|
||
| private M parseFrom(Integer value) throws IOException { | ||
| try { | ||
| return (M) this.clazz.getDeclaredMethod("forNumber", int.class).invoke(null, value); | ||
| } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) { | ||
| throw new IOException(e); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public M fromCodecBuffer(@Nonnull CodecBuffer buffer) | ||
| throws IOException { | ||
| return parseFrom(INTEGER_CODEC.fromCodecBuffer(buffer)); | ||
| } | ||
|
|
||
| @Override | ||
| public byte[] toPersistedFormat(M value) { | ||
| return INTEGER_CODEC.toPersistedFormat(value.getNumber()); | ||
| } | ||
|
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| @Override | ||
| public M fromPersistedFormat(byte[] bytes) throws IOException { | ||
| return parseFrom(INTEGER_CODEC.fromPersistedFormat(bytes)); | ||
| } | ||
|
|
||
| @Override | ||
| public M copyObject(M message) { | ||
| // proto messages are immutable | ||
| return message; | ||
| } | ||
| } |
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