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[ROCKETMQ-335] Reload server certificate, private key and root ca whe…
…n these are changed (apache#207)
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106 changes: 106 additions & 0 deletions
106
srvutil/src/main/java/org/apache/rocketmq/srvutil/FileWatchService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| /* | ||
| * 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.rocketmq.srvutil; | ||
|
|
||
| import com.google.common.base.Strings; | ||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
| import java.security.MessageDigest; | ||
| import java.security.NoSuchAlgorithmException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import org.apache.rocketmq.common.ServiceThread; | ||
| import org.apache.rocketmq.common.UtilAll; | ||
| import org.apache.rocketmq.common.constant.LoggerName; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
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| public class FileWatchService extends ServiceThread { | ||
| private static final Logger log = LoggerFactory.getLogger(LoggerName.COMMON_LOGGER_NAME); | ||
|
|
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| private final List<String> watchFiles; | ||
| private final List<String> fileCurrentHash; | ||
| private final Listener listener; | ||
| private static final int WATCH_INTERVAL = 500; | ||
| private MessageDigest md = MessageDigest.getInstance("MD5"); | ||
|
|
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| public FileWatchService(final String[] watchFiles, | ||
| final Listener listener) throws Exception { | ||
| this.listener = listener; | ||
| this.watchFiles = new ArrayList<>(); | ||
| this.fileCurrentHash = new ArrayList<>(); | ||
|
|
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| for (int i = 0; i < watchFiles.length; i++) { | ||
| if (!Strings.isNullOrEmpty(watchFiles[i]) && new File(watchFiles[i]).exists()) { | ||
| this.watchFiles.add(watchFiles[i]); | ||
| this.fileCurrentHash.add(hash(watchFiles[i])); | ||
| } | ||
| } | ||
| } | ||
|
|
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| @Override | ||
| public String getServiceName() { | ||
| return "FileWatchService"; | ||
| } | ||
|
|
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| @Override | ||
| public void run() { | ||
| log.info(this.getServiceName() + " service started"); | ||
|
|
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| while (!this.isStopped()) { | ||
| try { | ||
| this.waitForRunning(WATCH_INTERVAL); | ||
|
|
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| for (int i = 0; i < watchFiles.size(); i++) { | ||
| String newHash; | ||
| try { | ||
| newHash = hash(watchFiles.get(i)); | ||
| } catch (Exception ignored) { | ||
| log.warn(this.getServiceName() + " service has exception when calculate the file hash. ", ignored); | ||
| continue; | ||
| } | ||
| if (!newHash.equals(fileCurrentHash.get(i))) { | ||
| fileCurrentHash.set(i, newHash); | ||
| listener.onChanged(watchFiles.get(i)); | ||
| } | ||
| } | ||
| } catch (Exception e) { | ||
| log.warn(this.getServiceName() + " service has exception. ", e); | ||
| } | ||
| } | ||
| log.info(this.getServiceName() + " service end"); | ||
| } | ||
|
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| private String hash(String filePath) throws IOException, NoSuchAlgorithmException { | ||
| Path path = Paths.get(filePath); | ||
| md.update(Files.readAllBytes(path)); | ||
| byte[] hash = md.digest(); | ||
| return UtilAll.bytes2string(hash); | ||
| } | ||
|
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| public interface Listener { | ||
| /** | ||
| * Will be called when the target files are changed | ||
| * @param path the changed file path | ||
| */ | ||
| void onChanged(String path); | ||
| } | ||
| } |
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