Fixed UDF jar metadata handling in UDFInfo when multiple UDFs share the same jar
#17732
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.iotdb.commons.executable; | ||
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| import org.apache.tsfile.utils.ReadWriteIOUtils; | ||
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| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.OutputStream; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Objects; | ||
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| public class ReferenceCountedJarMetaKeeper { | ||
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| private final Map<String, String> jarNameToMd5Map = new HashMap<>(); | ||
| private final Map<String, Integer> jarNameToReferenceCountMap = new HashMap<>(); | ||
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| public synchronized boolean containsJar(final String jarName) { | ||
| return jarNameToMd5Map.containsKey(jarName); | ||
| } | ||
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| public synchronized boolean needToSaveJar(final String jarName) { | ||
| return !containsJar(jarName); | ||
| } | ||
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| public synchronized boolean jarNameExistsAndMatchesMd5(final String jarName, final String md5) { | ||
| return containsJar(jarName) && Objects.equals(jarNameToMd5Map.get(jarName), md5); | ||
| } | ||
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| public synchronized void addReference(final String jarName, final String md5) { | ||
| if (jarNameToReferenceCountMap.containsKey(jarName)) { | ||
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Check warning on line 49 in iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/executable/ReferenceCountedJarMetaKeeper.java
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| jarNameToReferenceCountMap.put(jarName, jarNameToReferenceCountMap.get(jarName) + 1); | ||
| return; | ||
| } | ||
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| jarNameToReferenceCountMap.put(jarName, 1); | ||
| jarNameToMd5Map.put(jarName, md5); | ||
| } | ||
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| public synchronized void removeReference(final String jarName) { | ||
| final Integer referenceCount = jarNameToReferenceCountMap.get(jarName); | ||
| if (referenceCount == null || referenceCount <= 1) { | ||
| jarNameToReferenceCountMap.remove(jarName); | ||
| jarNameToMd5Map.remove(jarName); | ||
| return; | ||
| } | ||
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| jarNameToReferenceCountMap.put(jarName, referenceCount - 1); | ||
| } | ||
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| public synchronized void clear() { | ||
| jarNameToMd5Map.clear(); | ||
| jarNameToReferenceCountMap.clear(); | ||
| } | ||
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| public synchronized Map<String, String> getJarNameToMd5Map() { | ||
| return new HashMap<>(jarNameToMd5Map); | ||
| } | ||
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| public synchronized void serializeJarNameToMd5(final OutputStream outputStream) | ||
| throws IOException { | ||
| ReadWriteIOUtils.write(jarNameToMd5Map.size(), outputStream); | ||
| for (final Map.Entry<String, String> entry : jarNameToMd5Map.entrySet()) { | ||
| ReadWriteIOUtils.write(entry.getKey(), outputStream); | ||
| ReadWriteIOUtils.write(entry.getValue(), outputStream); | ||
| } | ||
| } | ||
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| public synchronized void deserializeJarNameToMd5(final InputStream inputStream) | ||
| throws IOException { | ||
| clear(); | ||
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| int size = ReadWriteIOUtils.readInt(inputStream); | ||
| while (size > 0) { | ||
| addReference( | ||
| ReadWriteIOUtils.readString(inputStream), ReadWriteIOUtils.readString(inputStream)); | ||
| size--; | ||
| } | ||
| } | ||
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| public synchronized void serializeJarNameToMd5AndReferenceCount(final OutputStream outputStream) | ||
| throws IOException { | ||
| ReadWriteIOUtils.write(jarNameToMd5Map.size(), outputStream); | ||
| for (final Map.Entry<String, String> entry : jarNameToMd5Map.entrySet()) { | ||
| final String jarName = entry.getKey(); | ||
| ReadWriteIOUtils.write(jarName, outputStream); | ||
| ReadWriteIOUtils.write(entry.getValue(), outputStream); | ||
| ReadWriteIOUtils.write(jarNameToReferenceCountMap.getOrDefault(jarName, 0), outputStream); | ||
| } | ||
| } | ||
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| public synchronized void deserializeJarNameToMd5AndReferenceCount(final InputStream inputStream) | ||
| throws IOException { | ||
| clear(); | ||
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| final int jarSize = ReadWriteIOUtils.readInt(inputStream); | ||
| for (int i = 0; i < jarSize; i++) { | ||
| final String jarName = ReadWriteIOUtils.readString(inputStream); | ||
| jarNameToMd5Map.put(jarName, ReadWriteIOUtils.readString(inputStream)); | ||
| jarNameToReferenceCountMap.put(jarName, ReadWriteIOUtils.readInt(inputStream)); | ||
| } | ||
| } | ||
| } | ||
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After deserializeExistedJarToMD5, rebuildJarMetadataFromUDFTable() clears both maps and rebuilds from udfTable. That makes udfTable the source of truth on load.
A short comment here explaining that deserialized existedJarToMD5 is intentionally discarded would help future readers.