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Apache ZooKeeper Server Source Code
Apache ZooKeeper is an open-source server which enables highly reliable distributed coordination.
Apache ZooKeeper Server Source Code files are provided in the source package file, apache-zookeeper-3.8.0.tar.gz.
You can download apache-zookeeper-3.8.0.tar.gz as described in the previous tutorial and go to the "zookeeper-server" sub-folder to view Apache ZooKeeper Server Source Code files.
You can also browse Apache ZooKeeper Server Source Code below:
✍: FYIcenter.com
⏎ org/apache/zookeeper/common/AtomicFileOutputStream.java
/* * 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.zookeeper.common; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.FilterOutputStream; import java.io.IOException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /* * This code is originally from HDFS, see the similarly named files there * in case of bug fixing, history, etc... */ /** * A FileOutputStream that has the property that it will only show up at its * destination once it has been entirely written and flushed to disk. While * being written, it will use a .tmp suffix. * * When the output stream is closed, it is flushed, fsynced, and will be moved * into place, overwriting any file that already exists at that location. * * <b>NOTE</b>: on Windows platforms, it will not atomically replace the target * file - instead the target file is deleted before this one is moved into * place. */ public class AtomicFileOutputStream extends FilterOutputStream { public static final String TMP_EXTENSION = ".tmp"; private static final Logger LOG = LoggerFactory.getLogger(AtomicFileOutputStream.class); private final File origFile; private final File tmpFile; public AtomicFileOutputStream(File f) throws FileNotFoundException { // Code unfortunately must be duplicated below since we can't assign // anything // before calling super super(new FileOutputStream(new File(f.getParentFile(), f.getName() + TMP_EXTENSION))); origFile = f.getAbsoluteFile(); tmpFile = new File(f.getParentFile(), f.getName() + TMP_EXTENSION).getAbsoluteFile(); } /** * The default write method in FilterOutputStream does not call the write * method of its underlying input stream with the same arguments. Instead * it writes the data byte by byte, override it here to make it more * efficient. */ @Override public void write(byte[] b, int off, int len) throws IOException { out.write(b, off, len); } @Override public void close() throws IOException { boolean triedToClose = false, success = false; try { flush(); ((FileOutputStream) out).getFD().sync(); triedToClose = true; super.close(); success = true; } finally { if (success) { boolean renamed = tmpFile.renameTo(origFile); if (!renamed) { // On windows, renameTo does not replace. if (!origFile.delete() || !tmpFile.renameTo(origFile)) { throw new IOException("Could not rename temporary file " + tmpFile + " to " + origFile); } } } else { if (!triedToClose) { // If we failed when flushing, try to close it to not leak // an FD IOUtils.closeStream(out); } // close wasn't successful, try to delete the tmp file if (!tmpFile.delete()) { LOG.warn("Unable to delete tmp file {}", tmpFile); } } } } /** * Close the atomic file, but do not "commit" the temporary file on top of * the destination. This should be used if there is a failure in writing. */ public void abort() { try { super.close(); } catch (IOException ioe) { LOG.warn("Unable to abort file {}", tmpFile, ioe); } if (!tmpFile.delete()) { LOG.warn("Unable to delete tmp file during abort {}", tmpFile); } } }
⏎ org/apache/zookeeper/common/AtomicFileOutputStream.java
Or download all of them as a single archive file:
File name: zookeeper-server-3.8.0-fyi.zip File size: 885581 bytes Release date: 2022-02-25 Download
⇒ Apache ZooKeeper Jute Source Code
⇐ Download and Install Apache ZooKeeper Source Package
2022-11-16, 13921👍, 0💬
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