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0003282: Common batch extracts may fail when a cluster is using a shared
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95 changes: 95 additions & 0 deletions
95
symmetric-io/src/main/java/org/jumpmind/symmetric/io/stage/StagingFileLock.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| /** | ||
| * Licensed to JumpMind Inc under one or more contributor | ||
| * license agreements. See the NOTICE file distributed | ||
| * with this work for additional information regarding | ||
| * copyright ownership. JumpMind Inc licenses this file | ||
| * to you under the GNU General Public License, version 3.0 (GPLv3) | ||
| * (the "License"); you may not use this file except in compliance | ||
| * with the License. | ||
| * | ||
| * You should have received a copy of the GNU General Public License, | ||
| * version 3.0 (GPLv3) along with this library; if not, see | ||
| * <http://www.gnu.org/licenses/>. | ||
| * | ||
| * 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.jumpmind.symmetric.io.stage; | ||
|
|
||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.attribute.FileTime; | ||
|
|
||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
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| public class StagingFileLock { | ||
|
|
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| protected static final Logger log = LoggerFactory.getLogger(StagingFileLock.class); | ||
|
|
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| boolean acquired = false; | ||
| private File lockFile; | ||
| private String lockFailureMessage; | ||
|
|
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| public long getLockAge() { | ||
| if (lockFile != null) { | ||
| FileTime lastModifiedTime; | ||
| try { | ||
| lastModifiedTime = Files.getLastModifiedTime(lockFile.toPath()); | ||
| return System.currentTimeMillis() - lastModifiedTime.toMillis(); | ||
| } catch (IOException ex) { | ||
| if (log.isDebugEnabled()) { | ||
| log.debug("Failed to get last modified time for file " + lockFile, ex); | ||
| } | ||
| return 0; | ||
| } | ||
| } else { | ||
| return 0; | ||
| } | ||
| } | ||
|
|
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| public boolean isAcquired() { | ||
| return acquired; | ||
| } | ||
| public void setAcquired(boolean acquired) { | ||
| this.acquired = acquired; | ||
| } | ||
| public File getLockFile() { | ||
| return lockFile; | ||
| } | ||
| public void setLockFile(File lockFile) { | ||
| this.lockFile = lockFile; | ||
| } | ||
| public String getLockFailureMessage() { | ||
| return lockFailureMessage; | ||
| } | ||
| public void setLockFailureMessage(String lockFailureMessage) { | ||
| this.lockFailureMessage = lockFailureMessage; | ||
| } | ||
|
|
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| public void releaseLock() { | ||
| if (lockFile.delete()) { | ||
| log.debug("Lock {} released successfully.", lockFile); | ||
| } else { | ||
| log.warn("Failed to release lock {}", lockFile); | ||
| } | ||
| } | ||
|
|
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| public void breakLock() { | ||
| if (lockFile.delete()) { | ||
| log.info("Lock {} broken successfully.", lockFile); | ||
| } else { | ||
| log.warn("Failed to break lock {}", lockFile); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public String toString() { | ||
| return String.format("%s [%s]", super.toString(), lockFile); | ||
| } | ||
| } |
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