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RedLock implementation in Java
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‎.github/workflows/maven.yml‎

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name: Java CI with Maven
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on:
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push:
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branches: [ master ]
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pull_request:
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branches: [ master ]
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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- name: Set up JDK 8
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uses: actions/setup-java@v2
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with:
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java-version: '8'
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distribution: 'adopt'
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- name: Redis Server in GitHub Actions
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uses: supercharge/redis-github-action@1.1.0
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- name: Build with Maven
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run: mvn -B package --file pom.xml

‎.gitignore‎

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# Compiled class file
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*.class
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# Log file
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*.log
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# BlueJ files
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*.ctxt
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# Mobile Tools for Java (J2ME)
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.mtj.tmp/
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# Package Files #
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*.jar
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*.war
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*.nar
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*.ear
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*.zip
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*.tar.gz
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*.rar
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# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
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hs_err_pid*
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# IntelliJ files and folders
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.idea
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*.iml
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# Maven
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target

‎LICENSE‎

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MIT License
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Copyright (c) 2021 Sathish
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.md‎

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# redlock-java
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RedLock in Java
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Implementation based on [Redlock-rb](https://github.com/antirez/redlock-rb)
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This Java library implements the Redis-based distributed lock manager algorithm [described in this blog post](http://antirez.com/news/77).
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To create a lock manager:
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```java
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RedLock redLock = new RedLock();
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```
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To acquire a lock:
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```java
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String lockResult = redLock.lock("redlock");
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```
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To release a lock:
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```java
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List<Object> releaseLockResult = redLock.release("redlock", lockResult);
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```

‎pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>io.github.s-sathish</groupId>
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<artifactId>redlock-java</artifactId>
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<version>1.0</version>
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<name>RedLock-Java</name>
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<description>RedLock in Java</description>
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<url>https://github.com/s-sathish/redlock-java</url>
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<developers>
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<developer>
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<id>s-sathish</id>
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<name>Sathish S</name>
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<email>sathish1293@gmail.com</email>
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</developer>
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</developers>
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<licenses>
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<license>
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<name>MIT</name>
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<url>http://github.com/s-sathish/redlock-java/raw/master/LICENSE</url>
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<distribution>repo</distribution>
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</license>
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</licenses>
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<scm>
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<connection>scm:git:git@github.com:s-sathish/redlock-java.git</connection>
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<url>scm:git:git@github.com:s-sathish/redlock-java.git</url>
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<developerConnection>scm:git:git@github.com:s-sathish/redlock-java.git</developerConnection>
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<tag>redlock-java-1.0</tag>
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</scm>
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<properties>
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<jedis.version>3.6.0</jedis.version>
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<slf4j.version>1.7.30</slf4j.version>
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<junit.version>4.13.2</junit.version>
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<redlock.module.name>redis.lock.redlock</redlock.module.name>
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</properties>
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<dependencies>
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<dependency>
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<groupId>redis.clients</groupId>
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<artifactId>jedis</artifactId>
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<version>${jedis.version}</version>
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<type>jar</type>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-simple</artifactId>
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<version>${slf4j.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>${junit.version}</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<distributionManagement>
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<snapshotRepository>
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<id>ossrh</id>
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<url>https://oss.sonatype.org/content/repositories/snapshots</url>
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</snapshotRepository>
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<repository>
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<id>ossrh</id>
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<url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
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</repository>
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</distributionManagement>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.1</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>2.22.2</version>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-source-plugin</artifactId>
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<version>3.2.1</version>
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<configuration>
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<attach>true</attach>
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</configuration>
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<executions>
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<execution>
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<id>attach-sources</id>
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<goals>
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<goal>jar</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-javadoc-plugin</artifactId>
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<version>3.2.0</version>
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<configuration>
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<doclint>none</doclint>
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</configuration>
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<executions>
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<execution>
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<id>attach-javadoc</id>
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<goals>
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<goal>aggregate</goal>
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<goal>jar</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-release-plugin</artifactId>
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<version>2.5.3</version>
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</plugin>
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<plugin>
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<groupId>org.sonatype.plugins</groupId>
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<artifactId>nexus-staging-maven-plugin</artifactId>
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<version>1.6.8</version>
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<extensions>true</extensions>
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<configuration>
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<serverId>ossrh</serverId>
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<nexusUrl>https://oss.sonatype.org/</nexusUrl>
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<autoReleaseAfterClose>true</autoReleaseAfterClose>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-jar-plugin</artifactId>
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<version>3.2.0</version>
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<configuration>
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<archive>
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<manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
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<manifestEntries>
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<Automatic-Module-Name>${redlock.module.name}</Automatic-Module-Name>
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</manifestEntries>
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</archive>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.felix</groupId>
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<artifactId>maven-bundle-plugin</artifactId>
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<version>4.2.1</version>
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<executions>
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<execution>
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<id>bundle-manifest</id>
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<phase>process-classes</phase>
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<goals>
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<goal>manifest</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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<profiles>
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<profile>
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<id>release</id>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-gpg-plugin</artifactId>
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<version>1.6</version>
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<executions>
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<execution>
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<id>sign-artifacts</id>
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<phase>verify</phase>
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<goals>
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<goal>sign</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</profile>
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</profiles>
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</project>

‎src/main/java/redis/lock/redlock/LockResult.java‎

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package redis.lock.redlock;
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public class LockResult {
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private final String resource;
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private final String value;
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private final double validity;
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public LockResult(String resource, String value, double validityTime) {
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this.resource = resource;
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this.value = value;
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this.validity = validityTime;
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}
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public String getResource() {
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return resource;
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}
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public String getValue() {
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return value;
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}
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public double getValidity() {
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return validity;
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}
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}

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