Create the DeployerPartitionHandler and related

DeployerStepExecutionHandler

Created a PartitionHandler that delegates to a TaskLauncher from Spring
Cloud Deployer to execute workers.

Resolves spring-cloud/spring-cloud-task#109

Updates per code review

spring-cloud-task-samples/batch-job/pom.xml

@@ -19,6 +19,7 @@
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.7</java.version>
 	</properties>
 
 	<dependencies>

spring-cloud-task-samples/batch-job/src/main/java/io/spring/BatchJobApplication.java

@@ -1,4 +1,4 @@
-package demo;
+package io.spring;
 
 import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
 import org.springframework.boot.SpringApplication;

spring-cloud-task-samples/batch-job/src/main/java/io/spring/configuration/JobConfiguration.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package demo.configuration;
+package io.spring.configuration;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;

spring-cloud-task-samples/batch-job/src/test/java/io/spring/BatchJobApplicationTests.java

@@ -14,19 +14,20 @@
  * limitations under the License.
  */
 
-package demo;
-
-import static junit.framework.Assert.assertEquals;
-import static junit.framework.Assert.assertTrue;
+package io.spring;
 
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import org.junit.Rule;
 import org.junit.Test;
+
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.test.OutputCapture;
 
+import static junit.framework.Assert.assertEquals;
+import static junit.framework.Assert.assertTrue;
+
 /**
  * Verifies that the Task Application outputs the correct task log entries.
  *
@@ -69,6 +70,7 @@ public class BatchJobApplicationTests {
 		String taskTitle = "Demo Batch Job Task";
 		Pattern pattern = Pattern.compile(taskTitle);
 		Matcher matcher = pattern.matcher(output);
+
 		int count = 0;
 		while (matcher.find()) {
 			count++;

spring-cloud-task-samples/partitioned-batch-job/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1 @@
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.3.3/apache-maven-3.3.3-bin.zip

spring-cloud-task-samples/partitioned-batch-job/README.adoc

@@ -0,0 +1,27 @@
+= Partitioned Job
+
+An example of the usage of the `DeployerPartitionHandler` and
+`DeployerStepExecutionHandler` to partition a Spring Batch job.
+
+== Requirements:
+
+* Java 7 or Above
+
+== Build:
+
+[source,shell,indent=2]
+----
+$ ./mvnw clean install
+----
+
+== Execute:
+
+[source,shell,indent=2]
+----
+$ java -jar -Dspring.profiles.active=master target/partitioned-batch-job-1.0.0.BUILD-SNAPSHOT.jar
+----
+
+== Dependencies:
+
+A datasource (not in memory) must be configured based on normal Spring Boot conventions
+(application.properties/application.yml/environment variables/etc).

spring-cloud-task-samples/partitioned-batch-job/mvnw

@@ -0,0 +1,233 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# 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.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven2 Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+           #
+           # Look for the Apple JDKs first to preserve the existing behaviour, and then look
+           # for the new JDKs provided by Oracle.
+           #
+           if [ -z "$JAVA_HOME" ] && [ -L /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK ] ; then
+             #
+             # Apple JDKs
+             #
+             export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home
+           fi
+
+           if [ -z "$JAVA_HOME" ] && [ -L /System/Library/Java/JavaVirtualMachines/CurrentJDK ] ; then
+             #
+             # Apple JDKs
+             #
+             export JAVA_HOME=/System/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home
+           fi
+
+           if [ -z "$JAVA_HOME" ] && [ -L "/Library/Java/JavaVirtualMachines/CurrentJDK" ] ; then
+             #
+             # Oracle JDKs
+             #
+             export JAVA_HOME=/Library/Java/JavaVirtualMachines/CurrentJDK/Contents/Home
+           fi
+
+           if [ -z "$JAVA_HOME" ] && [ -x "/usr/libexec/java_home" ]; then
+             #
+             # Apple JDKs
+             #
+             export JAVA_HOME=`/usr/libexec/java_home`
+           fi
+           ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Migwn, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+  # TODO classpath?
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+fi
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+  local basedir=$(pwd)
+  local wdir=$(pwd)
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    wdir=$(cd "$wdir/.."; pwd)
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-$(find_maven_basedir)}
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} "$@"

spring-cloud-task-samples/partitioned-batch-job/mvnw.cmd

@@ -0,0 +1,145 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven2 Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM enable echoing my setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+set MAVEN_CMD_LINE_ARGS=%*
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+
+set WRAPPER_JAR="".\.mvn\wrapper\maven-wrapper.jar""
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CMD_LINE_ARGS%
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%

spring-cloud-task-samples/partitioned-batch-job/pom.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>io.spring.cloud</groupId>
+	<artifactId>partitioned-batch-job</artifactId>
+	<packaging>jar</packaging>
+	<name>Partitioned Batch Job</name>
+	<version>1.0.0.BUILD-SNAPSHOT</version>
+	<description>Sample of using the DeployerPartitionHandler</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>1.3.3.RELEASE</version>
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.7</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-batch</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-task-batch</artifactId>
+			<version>1.0.0.BUILD-SNAPSHOT</version>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.batch</groupId>
+			<artifactId>spring-batch-integration</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-deployer-local</artifactId>
+			<version>1.0.0.BUILD-SNAPSHOT</version>
+		</dependency>
+
+		<dependency>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-jdbc</artifactId>
+		</dependency>
+		
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+	
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+	
+
+</project>

spring-cloud-task-samples/partitioned-batch-job/src/main/java/io/spring/JobConfiguration.java

@@ -0,0 +1,173 @@
+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * Licensed 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 io.spring;
+
+import java.util.HashMap;
+import java.util.Map;
+import javax.sql.DataSource;
+
+import org.springframework.batch.core.Job;
+import org.springframework.batch.core.Step;
+import org.springframework.batch.core.StepContribution;
+import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
+import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
+import org.springframework.batch.core.configuration.annotation.StepScope;
+import org.springframework.batch.core.explore.JobExplorer;
+import org.springframework.batch.core.explore.support.JobExplorerFactoryBean;
+import org.springframework.batch.core.explore.support.SimpleJobExplorer;
+import org.springframework.batch.core.partition.PartitionHandler;
+import org.springframework.batch.core.partition.support.Partitioner;
+import org.springframework.batch.core.repository.JobRepository;
+import org.springframework.batch.core.scope.context.ChunkContext;
+import org.springframework.batch.core.step.tasklet.Tasklet;
+import org.springframework.batch.item.ExecutionContext;
+import org.springframework.batch.repeat.RepeatStatus;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.cloud.deployer.resource.maven.MavenResource;
+import org.springframework.cloud.deployer.spi.local.LocalDeployerProperties;
+import org.springframework.cloud.deployer.spi.local.LocalTaskLauncher;
+import org.springframework.cloud.deployer.spi.task.TaskLauncher;
+import org.springframework.cloud.task.batch.partition.DeployerPartitionHandler;
+import org.springframework.cloud.task.batch.partition.DeployerStepExecutionHandler;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+
+/**
+ * @author Michael Minella
+ */
+@Configuration
+public class JobConfiguration {
+
+	@Autowired
+	public JobBuilderFactory jobBuilderFactory;
+
+	@Autowired
+	public StepBuilderFactory stepBuilderFactory;
+
+	@Autowired
+	public DataSource dataSource;
+
+	@Autowired
+	public JobRepository jobRepository;
+
+	@Autowired
+	private ConfigurableApplicationContext context;
+
+	private static final int GRID_SIZE = 4;
+
+	@Bean
+	public JobExplorerFactoryBean jobExplorer() {
+		JobExplorerFactoryBean jobExplorerFactoryBean = new JobExplorerFactoryBean();
+
+		jobExplorerFactoryBean.setDataSource(this.dataSource);
+
+		return jobExplorerFactoryBean;
+	}
+
+	@Bean
+	public TaskLauncher taskLauncher() {
+		LocalDeployerProperties localDeployerProperties = new LocalDeployerProperties();
+
+		localDeployerProperties.setDeleteFilesOnExit(false);
+
+		return new LocalTaskLauncher(localDeployerProperties);
+	}
+
+	@Bean
+	public PartitionHandler partitionHandler(TaskLauncher taskLauncher, JobExplorer jobExplorer) throws Exception {
+		MavenResource resource = MavenResource.parse("io.spring.cloud:partitioned-batch-job:1.0.0.BUILD-SNAPSHOT");
+
+		DeployerPartitionHandler partitionHandler = new DeployerPartitionHandler(taskLauncher, jobExplorer, resource, "workerStep");
+
+		Map<String, String> environmentProperties = new HashMap<>();
+		environmentProperties.put("spring.profiles.active", "worker");
+
+		partitionHandler.setEnvironmentProperties(environmentProperties);
+		partitionHandler.setMaxWorkers(2);
+
+		return partitionHandler;
+	}
+
+	@Bean
+	public Partitioner partitioner() {
+		return new Partitioner() {
+			@Override
+			public Map<String, ExecutionContext> partition(int gridSize) {
+
+				Map<String, ExecutionContext> partitions = new HashMap<>(gridSize);
+
+				for(int i = 0; i < GRID_SIZE; i++) {
+					ExecutionContext context1 = new ExecutionContext();
+					context1.put("partitionNumber", i);
+
+					partitions.put("partition" + i, context1);
+				}
+
+				return partitions;
+			}
+		};
+	}
+
+	@Bean
+	@Profile("worker")
+	public DeployerStepExecutionHandler stepExecutionHandler(JobExplorer jobExplorer) {
+		DeployerStepExecutionHandler handler = new DeployerStepExecutionHandler(this.context, jobExplorer, this.jobRepository);
+
+		return handler;
+	}
+
+	@Bean
+	@StepScope
+	public Tasklet workerTasklet(
+			final @Value("#{stepExecutionContext['partitionNumber']}")Integer partitionNumber) {
+
+		return new Tasklet() {
+			@Override
+			public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
+				System.out.println("This tasklet ran partition: " + partitionNumber);
+
+				return RepeatStatus.FINISHED;
+			}
+		};
+	}
+
+	@Bean
+	public Step step1(PartitionHandler partitionHandler) throws Exception {
+		return stepBuilderFactory.get("step1")
+				.partitioner(workerStep().getName(), partitioner())
+				.step(workerStep())
+				.partitionHandler(partitionHandler)
+				.build();
+	}
+
+	@Bean
+	public Step workerStep() {
+		return stepBuilderFactory.get("workerStep")
+				.tasklet(workerTasklet(null))
+				.build();
+	}
+
+	@Bean
+	@Profile("master")
+	public Job job(PartitionHandler partitionHandler) throws Exception {
+		return jobBuilderFactory.get("job")
+				.start(step1(partitionHandler))
+				.build();
+	}
+}

spring-cloud-task-samples/partitioned-batch-job/src/main/java/io/spring/PartitionedBatchJobApplication.java

@@ -0,0 +1,16 @@
+package io.spring;
+
+import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.task.configuration.EnableTask;
+
+@SpringBootApplication
+@EnableBatchProcessing
+@EnableTask
+public class PartitionedBatchJobApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(PartitionedBatchJobApplication.class, args);
+	}
+}

spring-cloud-task-samples/pom.xml

@@ -26,6 +26,7 @@
 		<module>batch-job</module>
 		<module>tasksink</module>
 		<module>taskprocessor</module>
+		<module>partitioned-batch-job</module>
 	</modules>
 
 	<build>