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RATIS-1879. Handle RaftLog corruption when unsafe flush is enabled.
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ratis-server/src/main/java/org/apache/ratis/server/raftlog/RaftLogConf.java
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| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * 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.ratis.server.raftlog; | ||
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| import org.apache.ratis.conf.RaftProperties; | ||
| import org.apache.ratis.server.RaftServerConfigKeys; | ||
| import org.apache.ratis.util.MemoizedSupplier; | ||
| import org.apache.ratis.util.SizeInBytes; | ||
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| import java.util.function.Supplier; | ||
|
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| /** | ||
| * {@link RaftLog} related {@link RaftServerConfigKeys}. | ||
| */ | ||
| public final class RaftLogConf { | ||
| private static final Supplier<RaftLogConf> DEFAULT = MemoizedSupplier.valueOf(() -> get(new RaftProperties())); | ||
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| /** @return the default conf. */ | ||
| public static RaftLogConf get() { | ||
| return DEFAULT.get(); | ||
| } | ||
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| /** @return the conf from the given properties. */ | ||
| public static RaftLogConf get(RaftProperties properties) { | ||
| return new RaftLogConf(properties); | ||
| } | ||
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| private final long segmentMaxSize; | ||
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| private final int maxCachedSegments; | ||
| private final long maxSegmentCacheSize; | ||
| private final SizeInBytes maxOpSize; | ||
| private final boolean unsafeFlush; | ||
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| private RaftLogConf(RaftProperties properties) { | ||
| this.segmentMaxSize = RaftServerConfigKeys.Log.segmentSizeMax(properties).getSize(); | ||
| this.maxCachedSegments = RaftServerConfigKeys.Log.segmentCacheNumMax(properties); | ||
| this.maxSegmentCacheSize = RaftServerConfigKeys.Log.segmentCacheSizeMax(properties).getSize(); | ||
| this.unsafeFlush = RaftServerConfigKeys.Log.unsafeFlushEnabled(properties); | ||
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| this.maxOpSize = RaftServerConfigKeys.Log.Appender.bufferByteLimit(properties); | ||
| } | ||
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| public long getSegmentMaxSize() { | ||
| return segmentMaxSize; | ||
| } | ||
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| public int getMaxCachedSegments() { | ||
| return maxCachedSegments; | ||
| } | ||
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| public long getMaxSegmentCacheSize() { | ||
| return maxSegmentCacheSize; | ||
| } | ||
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| public SizeInBytes getMaxOpSize() { | ||
| return maxOpSize; | ||
| } | ||
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| public boolean isUnsafeFlush() { | ||
| return unsafeFlush; | ||
| } | ||
| } |
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