From e8629d78b63f0019e2bd880dc3f901a4b493ce9c Mon Sep 17 00:00:00 2001 From: moparisthebest Date: Thu, 1 Aug 2013 12:09:44 -0400 Subject: [PATCH] first commit, everything should be functional as-is --- .gitignore | 5 + core/pom.xml | 57 ++ .../jbgjob/AbstractScheduler.java | 50 ++ .../moparisthebest/jbgjob/BackgroundJob.java | 36 ++ .../moparisthebest/jbgjob/ScheduledItem.java | 82 +++ .../jbgjob/ScheduledItemExecutor.java | 113 ++++ .../com/moparisthebest/jbgjob/Scheduler.java | 52 ++ .../jbgjob/pool/ObjectPool.java | 76 +++ .../jbgjob/result/ExecutionResult.java | 30 ++ .../PrintStackTraceExecutionResult.java | 35 ++ .../jbgjob/AbstractSchedulerTests.java | 64 +++ .../moparisthebest/jbgjob/test/PrintDTO.java | 68 +++ .../jbgjob/test/PrintDTOChild.java | 28 + .../jbgjob/test/PrintingJob.java | 53 ++ license.txt | 502 ++++++++++++++++++ pom.xml | 105 ++++ readme.md | 61 +++ redisprocessor/pom.xml | 84 +++ .../processor/RedisErrorQueueThread.java | 107 ++++ .../processor/RedisProcessingQueueThread.java | 117 ++++ .../jbgjob/processor/RedisThread.java | 167 ++++++ .../jbgjob/processor/ScheduledItemError.java | 61 +++ .../processor/RedisErrorQueueThreadTest.java | 34 ++ .../RedisProcessingQueueThreadTest.java | 34 ++ .../jbgjob/processor/RedisThreadTest.java | 49 ++ redisscheduler/pom.xml | 68 +++ .../moparisthebest/jbgjob/RedisScheduler.java | 86 +++ .../jbgjob/RedisSchedulerTest.java | 31 ++ threadscheduler/pom.xml | 58 ++ .../jbgjob/ThreadScheduler.java | 49 ++ .../jbgjob/ThreadSchedulerTest.java | 31 ++ 31 files changed, 2393 insertions(+) create mode 100644 .gitignore create mode 100755 core/pom.xml create mode 100644 core/src/main/java/com/moparisthebest/jbgjob/AbstractScheduler.java create mode 100644 core/src/main/java/com/moparisthebest/jbgjob/BackgroundJob.java create mode 100644 core/src/main/java/com/moparisthebest/jbgjob/ScheduledItem.java create mode 100644 core/src/main/java/com/moparisthebest/jbgjob/ScheduledItemExecutor.java create mode 100644 core/src/main/java/com/moparisthebest/jbgjob/Scheduler.java create mode 100644 core/src/main/java/com/moparisthebest/jbgjob/pool/ObjectPool.java create mode 100644 core/src/main/java/com/moparisthebest/jbgjob/result/ExecutionResult.java create mode 100644 core/src/main/java/com/moparisthebest/jbgjob/result/PrintStackTraceExecutionResult.java create mode 100644 core/src/test/java/com/moparisthebest/jbgjob/AbstractSchedulerTests.java create mode 100644 core/src/test/java/com/moparisthebest/jbgjob/test/PrintDTO.java create mode 100644 core/src/test/java/com/moparisthebest/jbgjob/test/PrintDTOChild.java create mode 100644 core/src/test/java/com/moparisthebest/jbgjob/test/PrintingJob.java create mode 100644 license.txt create mode 100755 pom.xml create mode 100644 readme.md create mode 100755 redisprocessor/pom.xml create mode 100644 redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisErrorQueueThread.java create mode 100644 redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisProcessingQueueThread.java create mode 100644 redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisThread.java create mode 100644 redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/ScheduledItemError.java create mode 100644 redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisErrorQueueThreadTest.java create mode 100644 redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisProcessingQueueThreadTest.java create mode 100644 redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisThreadTest.java create mode 100755 redisscheduler/pom.xml create mode 100644 redisscheduler/src/main/java/com/moparisthebest/jbgjob/RedisScheduler.java create mode 100644 redisscheduler/src/test/java/com/moparisthebest/jbgjob/RedisSchedulerTest.java create mode 100755 threadscheduler/pom.xml create mode 100644 threadscheduler/src/main/java/com/moparisthebest/jbgjob/ThreadScheduler.java create mode 100644 threadscheduler/src/test/java/com/moparisthebest/jbgjob/ThreadSchedulerTest.java diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..978fa8a --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +.idea/ +*.iml +*/target/ +target/ +*~ diff --git a/core/pom.xml b/core/pom.xml new file mode 100755 index 0000000..9a046c0 --- /dev/null +++ b/core/pom.xml @@ -0,0 +1,57 @@ + + + + + + com.moparisthebest.jbgjob + jbgjob + 0.1-SNAPSHOT + + 4.0.0 + core + + + run-tests + + + maven.test.skip + false + + + + + + maven-jar-plugin + 2.4 + + + + test-jar + + + + + + + + + \ No newline at end of file diff --git a/core/src/main/java/com/moparisthebest/jbgjob/AbstractScheduler.java b/core/src/main/java/com/moparisthebest/jbgjob/AbstractScheduler.java new file mode 100644 index 0000000..e41b881 --- /dev/null +++ b/core/src/main/java/com/moparisthebest/jbgjob/AbstractScheduler.java @@ -0,0 +1,50 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +public abstract class AbstractScheduler implements Scheduler { + + public static final String defaultQueue = System.getProperty("scheduler.default.queue", "default"); + + @Override + public boolean schedule(final Class> bgClass, final T dto) { + return schedule(defaultQueue, bgClass, dto); + } + + @Override + public boolean schedule(final String queue, final Class> bgClass, final T dto) { + if (queue == null || bgClass == null || dto == null) + throw new NullPointerException("No parameters can be null!"); + return schedule(queue, new ScheduledItem(bgClass, dto)); + } + + @Override + public boolean schedule(final String queue, final ScheduledItem scheduledItem) { + if (queue == null || scheduledItem == null) + throw new NullPointerException("No parameters can be null!"); + return true; + } + + @Override + public void close() { + //nothing to close here + } +} diff --git a/core/src/main/java/com/moparisthebest/jbgjob/BackgroundJob.java b/core/src/main/java/com/moparisthebest/jbgjob/BackgroundJob.java new file mode 100644 index 0000000..6c82fd3 --- /dev/null +++ b/core/src/main/java/com/moparisthebest/jbgjob/BackgroundJob.java @@ -0,0 +1,36 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +/** + * Represents a background job to operate on a DTO. This is guaranteed to be ran in a single thread only, but may be + * ran on any number of DTOs before being discarded. + *

+ * An implementing class MUST have a public no-args constructor to instantiate this by. + */ +public interface BackgroundJob { + /** + * Process this DTO now, in this thread. + * + * @param dto dto to be processed + */ + public void process(T dto); +} diff --git a/core/src/main/java/com/moparisthebest/jbgjob/ScheduledItem.java b/core/src/main/java/com/moparisthebest/jbgjob/ScheduledItem.java new file mode 100644 index 0000000..cc2b64b --- /dev/null +++ b/core/src/main/java/com/moparisthebest/jbgjob/ScheduledItem.java @@ -0,0 +1,82 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +import com.moparisthebest.jbgjob.pool.ObjectPool; +import com.moparisthebest.jbgjob.result.ExecutionResult; + +/** + * Storage class that can be used by an implementation of Scheduler + */ +public class ScheduledItem implements Runnable { + public final Class> bgClass; + //@com.fasterxml.jackson.annotation.JsonTypeInfo(use = com.fasterxml.jackson.annotation.JsonTypeInfo.Id.CLASS) + public final T dto; + + private ObjectPool pool; + private ExecutionResult result; + + public ScheduledItem() { + this(null, null); + } + + public ScheduledItem(Class> bgClass, T dto) { + this.bgClass = bgClass; + this.dto = dto; + } + + @Override + public void run() { + BackgroundJob bgJob = null; + try { + bgJob = pool == null ? bgClass.newInstance() : pool.getResource(bgClass); + bgJob.process(dto); + if (result != null) + result.success(); + } catch (Throwable e) { + if (result != null) + result.error(e); + } finally { + if (pool != null && bgJob != null) + try { + pool.releaseResource(bgJob); + } catch (Throwable e) { + e.printStackTrace(); + } + } + } + + public void setPool(ObjectPool pool) { + this.pool = pool; + } + + public void setResult(ExecutionResult result) { + this.result = result; + } + + @Override + public String toString() { + return "ScheduledItem{" + + "bgClass=" + bgClass + + ", dto=" + dto + + "} " + super.toString(); + } +} diff --git a/core/src/main/java/com/moparisthebest/jbgjob/ScheduledItemExecutor.java b/core/src/main/java/com/moparisthebest/jbgjob/ScheduledItemExecutor.java new file mode 100644 index 0000000..4a7008f --- /dev/null +++ b/core/src/main/java/com/moparisthebest/jbgjob/ScheduledItemExecutor.java @@ -0,0 +1,113 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +import com.moparisthebest.jbgjob.pool.ObjectPool; +import com.moparisthebest.jbgjob.result.ExecutionResult; + +import java.io.Closeable; +import java.util.concurrent.*; + +/** + * Using a ThreadPool with a configurable number of Threads and an ObjectPool, schedules jobs to be executed in the future. + */ +public class ScheduledItemExecutor implements Closeable { + + public static final int defaultNumThreads; + + static { + int numThreads = 5; // 5 threads by default + try { + numThreads = Integer.parseInt(System.getProperty("scheduler.executor.numThreads", numThreads + "")); + } catch (Throwable e) { + e.printStackTrace(); + } + defaultNumThreads = numThreads; + } + + private final ExecutorService executor; + private final ObjectPool pool; + + public ScheduledItemExecutor() { + this(true); + } + public ScheduledItemExecutor(final boolean blockAddWhenSaturated) { + this(defaultNumThreads, blockAddWhenSaturated); + } + + public ScheduledItemExecutor(final int numThreads, final boolean blockAddWhenSaturated) { + this.pool = new ObjectPool(numThreads); + // grr... + // http://stackoverflow.com/questions/2001086/how-to-make-threadpoolexecutors-submit-method-block-if-it-is-saturated + // https://today.java.net/pub/a/today/2008/10/23/creating-a-notifying-blocking-thread-pool-executor.html + // http://stackoverflow.com/questions/3446011/threadpoolexecutor-block-when-queue-is-full/3518588#3518588 + this.executor = !blockAddWhenSaturated ? Executors.newFixedThreadPool(numThreads) : + new ThreadPoolExecutor(numThreads, numThreads, + 0L, TimeUnit.MILLISECONDS, + new LinkedBlockingQueue()) { + private final Semaphore semaphore = new Semaphore(numThreads); + + @Override + public void execute(final Runnable command) { + // acquire a lock + boolean lockAcquired = false; + do { + try { + semaphore.acquire(); + lockAcquired = true; + } catch (Throwable e) { + } + } while (!lockAcquired); + // run it + try { + super.execute(new Runnable() { + @Override + public void run() { + try { + command.run(); + } finally { + semaphore.release(); + } + } + }); + } catch (RuntimeException e) { + semaphore.release(); + throw e; + } + } + }; + } + + public void execute(final ScheduledItem scheduledItem) { + this.execute(scheduledItem, null); + } + + public void execute(final ScheduledItem scheduledItem, final ExecutionResult result) { + scheduledItem.setPool(pool); + scheduledItem.setResult(result); + executor.execute(scheduledItem); + } + + @Override + public void close() { + executor.shutdown(); + } +} diff --git a/core/src/main/java/com/moparisthebest/jbgjob/Scheduler.java b/core/src/main/java/com/moparisthebest/jbgjob/Scheduler.java new file mode 100644 index 0000000..7007b4f --- /dev/null +++ b/core/src/main/java/com/moparisthebest/jbgjob/Scheduler.java @@ -0,0 +1,52 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +import java.io.Closeable; + +/** + * This schedules a DTO to be processed by an instance of a particular BackgroundJob + *

+ * This class needs to be entirely Thread-Safe, it is generally meant to be declared final and static and accessed from a single place. + */ +public interface Scheduler extends Closeable { + /** + * This schedules a DTO to be processed by an instance of a particular BackgroundJob in the default queue. + * + * @param bgClass BackgroundJob to process the DTO + * @param dto to be processed in the background + * @param Type of DTO + * @return true if scheduling was successful, false otherwise + */ + public boolean schedule(final Class> bgClass, final T dto); + + /** + * This schedules a DTO to be processed by an instance of a particular BackgroundJob in the specified queue. + * + * @param bgClass BackgroundJob to process the DTO + * @param dto to be processed in the background + * @param Type of DTO + * @return true if scheduling was successful, false otherwise + */ + public boolean schedule(final String queue, final Class> bgClass, final T dto); + + public boolean schedule(final String queue, final ScheduledItem scheduledItem); +} diff --git a/core/src/main/java/com/moparisthebest/jbgjob/pool/ObjectPool.java b/core/src/main/java/com/moparisthebest/jbgjob/pool/ObjectPool.java new file mode 100644 index 0000000..a9f91cc --- /dev/null +++ b/core/src/main/java/com/moparisthebest/jbgjob/pool/ObjectPool.java @@ -0,0 +1,76 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.pool; + +import java.util.ArrayDeque; +import java.util.Deque; +import java.util.HashMap; +import java.util.Map; + +/** + * Represents pools of objects grouped by Class, if one isn't available when requested a new one is constructed with a default constructor. + */ +public class ObjectPool { + + protected final int queueSize; + protected final Map pool = new HashMap(); + + public ObjectPool() { + this(16); + } + + public ObjectPool(int queueSize) { + this.queueSize = queueSize; + } + + @SuppressWarnings({"unchecked"}) + public T getResource(Class obClass) throws IllegalAccessException, InstantiationException { + if (obClass == null) + throw new NullPointerException("Class cannot be null!"); + synchronized (pool) { + Deque deque = pool.get(obClass); + if (deque == null) { + deque = new ArrayDeque(queueSize); + pool.put(obClass, deque); + } + return deque.isEmpty() ? obClass.newInstance() : (T) deque.pop(); + } + + } + + @SuppressWarnings({"unchecked"}) + public void releaseResource(T resource) { + if (resource == null) + throw new NullPointerException("Released resource cannot be null!"); + synchronized (pool) { + pool.get(resource.getClass()).push(resource); + System.out.println("pool: " + pool); + } + } + + @Override + public String toString() { + return "ObjectPool{" + + "queueSize=" + queueSize + + ", pool=" + pool + + "} " + super.toString(); + } +} diff --git a/core/src/main/java/com/moparisthebest/jbgjob/result/ExecutionResult.java b/core/src/main/java/com/moparisthebest/jbgjob/result/ExecutionResult.java new file mode 100644 index 0000000..74a6cfd --- /dev/null +++ b/core/src/main/java/com/moparisthebest/jbgjob/result/ExecutionResult.java @@ -0,0 +1,30 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.result; + +/** + * Callback used by ScheduledItemExecutor + */ +public interface ExecutionResult { + public void success(); + + public void error(Throwable e); +} diff --git a/core/src/main/java/com/moparisthebest/jbgjob/result/PrintStackTraceExecutionResult.java b/core/src/main/java/com/moparisthebest/jbgjob/result/PrintStackTraceExecutionResult.java new file mode 100644 index 0000000..90d4d6f --- /dev/null +++ b/core/src/main/java/com/moparisthebest/jbgjob/result/PrintStackTraceExecutionResult.java @@ -0,0 +1,35 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.result; + +/** + * Does nothing on any result, except prints errors + */ +public class PrintStackTraceExecutionResult implements ExecutionResult { + @Override + public void success() { + } + + @Override + public void error(Throwable e) { + e.printStackTrace(); + } +} diff --git a/core/src/test/java/com/moparisthebest/jbgjob/AbstractSchedulerTests.java b/core/src/test/java/com/moparisthebest/jbgjob/AbstractSchedulerTests.java new file mode 100644 index 0000000..d7259eb --- /dev/null +++ b/core/src/test/java/com/moparisthebest/jbgjob/AbstractSchedulerTests.java @@ -0,0 +1,64 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +import com.moparisthebest.jbgjob.test.PrintDTO; +import com.moparisthebest.jbgjob.test.PrintDTOChild; +import com.moparisthebest.jbgjob.test.PrintingJob; +import org.junit.AfterClass; +import org.junit.Assert; +import org.junit.Test; + +public class AbstractSchedulerTests { + public static Scheduler bg; + + + @AfterClass + public static void closeBg() throws Throwable { + if (bg != null) + bg.close(); + } + + @Test + public void testScheduleDTO() throws Throwable { + Assert.assertTrue(bg.schedule(PrintingJob.class, new PrintDTO())); + } + + @Test + public void testScheduleChildDTO() throws Throwable { + Assert.assertTrue(bg.schedule(PrintingJob.class, new PrintDTOChild())); + } + + @Test + public void testScheduleErrorCausingDTO() throws Throwable { + Assert.assertTrue(bg.schedule(PrintingJob.class, new PrintDTO(true))); + } + + @Test + public void testFastJobs() throws Throwable { + int x = 0; + for (; x < 10; ++x) + Assert.assertTrue(bg.schedule(PrintingJob.class, new PrintDTO("fastJob " + x))); + Thread.sleep(5000); + for (; x < 20; ++x) + Assert.assertTrue(bg.schedule(PrintingJob.class, new PrintDTO("fastJob " + x))); + } +} diff --git a/core/src/test/java/com/moparisthebest/jbgjob/test/PrintDTO.java b/core/src/test/java/com/moparisthebest/jbgjob/test/PrintDTO.java new file mode 100644 index 0000000..e6127c5 --- /dev/null +++ b/core/src/test/java/com/moparisthebest/jbgjob/test/PrintDTO.java @@ -0,0 +1,68 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.test; + +public class PrintDTO { + private static final int maxSleep = 10000; + private static final int minSleep = 2000; + + private final String message; + private final int sleep = minSleep + (int) (Math.random() * ((maxSleep - minSleep) + 1)); + private final boolean throwException; + + public PrintDTO() { + this(false); + } + + public PrintDTO(boolean throwException) { + this("default test message", throwException); + } + + public PrintDTO(String message) { + this(message, false); + } + + public PrintDTO(String message, boolean throwException) { + this.message = message; + this.throwException = throwException; + } + + public String getMessage() { + return message; + } + + public int getSleep() { + return sleep; + } + + public boolean isThrowException() { + return throwException; + } + + @Override + public String toString() { + return "PrintDTO{" + + "message='" + message + '\'' + + ", sleep=" + sleep + + ", throwException=" + throwException + + "} " + super.toString(); + } +} diff --git a/core/src/test/java/com/moparisthebest/jbgjob/test/PrintDTOChild.java b/core/src/test/java/com/moparisthebest/jbgjob/test/PrintDTOChild.java new file mode 100644 index 0000000..ab4dbb7 --- /dev/null +++ b/core/src/test/java/com/moparisthebest/jbgjob/test/PrintDTOChild.java @@ -0,0 +1,28 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.test; + +public class PrintDTOChild extends PrintDTO { + @Override + public String toString() { + return "PrintDTOChild{} " + super.toString(); + } +} diff --git a/core/src/test/java/com/moparisthebest/jbgjob/test/PrintingJob.java b/core/src/test/java/com/moparisthebest/jbgjob/test/PrintingJob.java new file mode 100644 index 0000000..2c9a8dd --- /dev/null +++ b/core/src/test/java/com/moparisthebest/jbgjob/test/PrintingJob.java @@ -0,0 +1,53 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.test; + +import com.moparisthebest.jbgjob.BackgroundJob; + +import java.util.concurrent.atomic.AtomicInteger; + +public class PrintingJob implements BackgroundJob { + + private static final AtomicInteger instanceCount = new AtomicInteger(-1); + + private final int instance; + + public PrintingJob() { + System.out.println("new instance of PrintingJob created in thread: " + Thread.currentThread().getName()); + instance = instanceCount.incrementAndGet(); + } + + @Override + public void process(PrintDTO dto) { + System.out.printf("++++++++++++\nPrintingJob(%d): %s\ncurrent thread: %s\n--------------\n", instance, dto, Thread.currentThread().getName()); + try { + Thread.sleep(dto.getSleep()); + } catch (InterruptedException e) { + } + if (dto.isThrowException()) + throw new RuntimeException("oh my, something quite unexpected happened!"); + } + + @Override + public String toString() { + return String.format("PrintingJob(%d)", instance); + } +} diff --git a/license.txt b/license.txt new file mode 100644 index 0000000..4362b49 --- /dev/null +++ b/license.txt @@ -0,0 +1,502 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. 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See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/pom.xml b/pom.xml new file mode 100755 index 0000000..c85a3e5 --- /dev/null +++ b/pom.xml @@ -0,0 +1,105 @@ + + + + + + org.sonatype.oss + oss-parent + 7 + + 4.0.0 + com.moparisthebest.jbgjob + jbgjob + 0.1-SNAPSHOT + jbgjob + + jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + + https://github.com/moparisthebest/jBgJob + + moparisthebest.com + http://www.moparisthebest.com + + + + moparisthebest + Travis Burtrum + admin@moparisthebest.com + http://www.moparisthebest.com/ + + + + scm:git:https://github.com/moparisthebest/jBgJob.git + scm:git:https://github.com/moparisthebest/jBgJob.git + https://github.com/moparisthebest/jBgJob + + + + GNU Lesser General Public License, Version 2.1 + http://www.gnu.org/licenses/lgpl-2.1.html + + + pom + + true + UTF-8 + + + core + threadscheduler + redisscheduler + redisprocessor + + + + junit + junit + 4.11 + test + + + + + + maven-compiler-plugin + 3.1 + + 1.5 + 1.5 + false + + + + + + + run-tests + + + maven.test.skip + false + + + + + diff --git a/readme.md b/readme.md new file mode 100644 index 0000000..32c7407 --- /dev/null +++ b/readme.md @@ -0,0 +1,61 @@ +# jBgJob + +jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + +Sample Usage +```java +// somewhere in your application, you probably only need one instance +public static final Scheduler bgScheduler = new ThreadScheduler(); +// or +public static final Scheduler bgScheduler = new RedisScheduler(); + +// then, to schedule a background job anywhere in your code +if(bgScheduler.schedule(PrintingJob.class, new PrintDTO()) + System.out.println("job successfully scheduled!"); +else + System.out.println("error scheduling job, handle..."); +// for definitions of referenced PrintingJob and PrintDTO, look in the included test classes +``` + +Basically, you implement the method BackgroundJob.process(T dto), then use an implementation of Scheduler to schedule any number of DTOs to be processed by that BackgroundJob in a particular queue. Wherever those jobs end up getting executed at, an instance of that BackgroundJob gets created and potentially cached to process as many of those DTOs as is needed. Each instance of BackgroundJob is guaranteed to only run in a single thread so it doesn't need to worry about concurrency. ScheduledItemExecutor, used by all currently implemented processors, currently creates instances of particular BackgroundJob's when needed up to the number of threads running in the thread pool and caches them when not being used, using ObjectPool. + +There are currently two implementations of Scheduler: +* ThreadScheduler - This starts a Thread pool in the current JVM and schedules DTOs to be processed in it. This is surely useful for testing when no redis instance is available, but may be useful for small amounts of asynchronous jobs you may want to schedule as well. +* RedisScheduler - This serializes DTOs to a [redis][1] list acting as a FIFO queue, which can then be read and processed by an instance of RedisThread running anywhere with access to the same redis server. + +There are currently three implementations of a Redis Processor: +* RedisThread: Simply reads from the specified queue with BRPOP and processes the job, no errors are recorded and there is no visibility into which jobs are currently being processed. +* RedisProcessingQueueThread: Extends RedisThread, but reads from the queue with BRPOPLPUSH, pushing into a 'processing' queue and then removes the job from the processing queue when finished, either after success or an error. +* RedisErrorQueueThread: Extends RedisProcessingQueueThread, but if the job ends in an error (throws Throwable), a serialized ScheduledItemError is placed into the 'error' queue with the currentTimeMillis the exception occurred, the full stack trace, and the job that caused it. This can then be examined programmatically or manually later with the possibility of fixing the issue and re-running the job. + +Useful system properties (set with -DpropertyName=propertyValue) +------------ +* scheduler.executor.numThreads (default '5'): Number of threads in each ScheduledItemExecutor ThreadPool +* scheduler.default.queue (default 'default'): Queue to place job in when no queue is specified +* redis.host (default 'localhost'): Redis host to connect to +* redis.debug (default 'false'): Print debug statements about interaction with redis, useful for development +* redis.queuePrefix (default java.net.InetAddress.getLocalHost().getHostName()): Prefix to place in front of queue name, so one redis instance can be used by multiple machines if desired +* redis.timeout (default '5'): Used in RedisThread, timeout for blocking reads waiting for items to be put in the queue. After each timeout it checks the key queuePrefix + 'shutdown' for value 'shutdown' to see if it should shutdown after processing what it has already read. +* redis.maxTimeoutsBeforeClose (default '0' (never close)): If greater than 0, will shutdown after this many read timeouts, probably only useful for automated testing, or making it shutdown after processing the entire queue. +* redis.processingQueueSuffix (default 'processing'): Only used in instances of RedisProcessingQueueThread, suffix to add onto queue name for name of processing queue +* redis.errorQueueSuffix (default 'error'): Only used in instances of RedisErrorQueueThread, suffix to add onto queue name for name of error queue + +As an illustration, for host 'foo', using all the defaults above the default redis queue would be 'foo-default', the processing queue would be 'foo-default-processing' and the error queue would be 'foo-default-error'. + +Licensing +------------ +This project is licensed under the [GNU/LGPLv2.1][2], which allows use in Open Source or Proprietary programs. If you need to modify this code though, you should contribute back to it. + +Contributing +------------ + +1. Fork it. (Alternatively, if you **really** can't use github/git, email me a patch.) +2. Create a branch (`git checkout -b my_jBgJob`) +3. Commit your changes (`git commit -am "Implemented method X"`) +4. Push to the branch (`git push origin my_jBgJob`) +5. Open a [Pull Request][3] +6. Enjoy a refreshing beverage and wait + +[1]: http://redis.io/ +[2]: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html +[3]: https://github.com/moparisthebest/jBgJob/pulls diff --git a/redisprocessor/pom.xml b/redisprocessor/pom.xml new file mode 100755 index 0000000..0a760aa --- /dev/null +++ b/redisprocessor/pom.xml @@ -0,0 +1,84 @@ + + + + + + com.moparisthebest.jbgjob + jbgjob + 0.1-SNAPSHOT + + 4.0.0 + redisprocessor + + + ${project.groupId} + redisscheduler + ${project.version} + + + + + + maven-shade-plugin + 2.1 + + + package + + shade + + + false + false + + + com.moparisthebest.jbgjob.processor.RedisErrorQueueThread + + + + + + + + + + + run-tests + + + maven.test.skip + false + + + + + ${project.groupId} + core + ${project.version} + test-jar + test + + + + + \ No newline at end of file diff --git a/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisErrorQueueThread.java b/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisErrorQueueThread.java new file mode 100644 index 0000000..8fef15f --- /dev/null +++ b/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisErrorQueueThread.java @@ -0,0 +1,107 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.processor; + +import com.moparisthebest.jbgjob.result.ExecutionResult; +import redis.clients.jedis.Jedis; +import redis.clients.jedis.JedisPool; + +/** + * If the job ends in an error (throws Throwable), a serialized ScheduledItemError is placed into the 'error' queue with + * the currentTimeMillis the exception occurred, the full stack trace, and the job that caused it. This can then be + * examined programmatically or manually later with the possibility of fixing the issue and re-running the job. + */ +public class RedisErrorQueueThread extends RedisProcessingQueueThread { + + public static final String defaultErrorQueueSuffix; + + static { + final String suffix = System.getProperty("redis.errorQueueSuffix"); + defaultErrorQueueSuffix = (suffix == null || suffix.isEmpty()) ? "-error" : ("-" + suffix); + } + + public final String errorQueue; + + public RedisErrorQueueThread() { + this(defaultErrorQueueSuffix); + } + + public RedisErrorQueueThread(String errorQueueSuffix) { + this(defaultProcessingQueueSuffix, errorQueueSuffix); + } + + public RedisErrorQueueThread(String processingQueueSuffix, String errorQueueSuffix) { + this(defaultQueue, processingQueueSuffix, errorQueueSuffix); + } + + public RedisErrorQueueThread(String queue, String processingQueueSuffix, String errorQueueSuffix) { + this(null, queue, processingQueueSuffix, errorQueueSuffix); + } + + public RedisErrorQueueThread(JedisPool pool, String queue, String processingQueueSuffix, String errorQueueSuffix) { + this(defaultQueuePrefix, pool, queue, processingQueueSuffix, errorQueueSuffix); + } + + public RedisErrorQueueThread(String queuePrefix, JedisPool pool, String queue, String processingQueueSuffix, String errorQueueSuffix) { + super(queuePrefix, pool, queue, processingQueueSuffix); + this.errorQueue = this.queue + errorQueueSuffix; + } + + protected ExecutionResult getExecutionResult(final String scheduledItemString) { + return new RemoveFromProcessingQueuePutErrorQueue(scheduledItemString); + } + + protected class RemoveFromProcessingQueuePutErrorQueue extends RemoveFromProcessingQueueOnCompletion { + public RemoveFromProcessingQueuePutErrorQueue(String scheduledItemString) { + super(scheduledItemString); + } + + @Override + public void error(Throwable e) { + e.printStackTrace(); + // success, so remove 1 from processing queue + Jedis jedis = null; + try { + jedis = pool.getResource(); + // push to error queue + final String error = om.writeValueAsString(new ScheduledItemError(e, scheduledItemString)); + if (debug) System.out.printf("redis> LPUSH %s \"%s\"\n", errorQueue, error); + jedis.lpush(errorQueue, error); + // remove from processing queue + removeFromProcessingQueue(jedis); + } catch (Throwable e2) { + e2.printStackTrace(); + } finally { + tryReturn(jedis); + } + } + } + + @Override + void deleteQueue() { + deleteQueue(queue, processingQueue, errorQueue); + } + + public static void main(String[] args) { + // set all needed arguments with system properties + new RedisErrorQueueThread().run(); + } +} diff --git a/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisProcessingQueueThread.java b/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisProcessingQueueThread.java new file mode 100644 index 0000000..7079583 --- /dev/null +++ b/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisProcessingQueueThread.java @@ -0,0 +1,117 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.processor; + +import com.moparisthebest.jbgjob.result.ExecutionResult; +import com.moparisthebest.jbgjob.result.PrintStackTraceExecutionResult; +import redis.clients.jedis.Jedis; +import redis.clients.jedis.JedisPool; + +/** + * Reads from the queue with BRPOPLPUSH, pushing into a 'processing' queue and then removes the job from the processing queue when finished, either after success or an error. + */ +public class RedisProcessingQueueThread extends RedisThread { + + public static final String defaultProcessingQueueSuffix; + + static { + final String suffix = System.getProperty("redis.processingQueueSuffix"); + defaultProcessingQueueSuffix = (suffix == null || suffix.isEmpty()) ? "-processing" : ("-" + suffix); + } + + public final String processingQueue; + + public RedisProcessingQueueThread() { + this(defaultProcessingQueueSuffix); + } + + public RedisProcessingQueueThread(String processingQueueSuffix) { + this(defaultQueue, processingQueueSuffix); + } + + public RedisProcessingQueueThread(String queue, String processingQueueSuffix) { + this(null, queue, processingQueueSuffix); + } + + public RedisProcessingQueueThread(JedisPool pool, String queue, String processingQueueSuffix) { + this(defaultQueuePrefix, pool, queue, processingQueueSuffix); + } + + public RedisProcessingQueueThread(String queuePrefix, JedisPool pool, String queue, String processingQueueSuffix) { + super(queuePrefix, pool, queue); + this.processingQueue = this.queue + processingQueueSuffix; + } + + @Override + protected String pollRedis(final Jedis jedis, final int timeout) { + if (debug) System.out.printf("redis> BRPOPLPUSH %s %s %d\n", queue, processingQueue, timeout); + return jedis.brpoplpush(queue, processingQueue, timeout); + } + + protected ExecutionResult getExecutionResult(final String scheduledItemString) { + return new RemoveFromProcessingQueueOnCompletion(scheduledItemString); + } + + protected class RemoveFromProcessingQueueOnCompletion extends PrintStackTraceExecutionResult { + protected final String scheduledItemString; + + public RemoveFromProcessingQueueOnCompletion(String scheduledItemString) { + this.scheduledItemString = scheduledItemString; + } + + protected void removeFromProcessingQueue(Jedis jedis) { + boolean returnJedis = jedis == null; + try { + if (returnJedis) + jedis = pool.getResource(); + if (debug) System.out.printf("redis> LREM %s 1 \"%s\"\n", processingQueue, scheduledItemString); + jedis.lrem(processingQueue, 1, scheduledItemString); + } catch (Throwable e) { + e.printStackTrace(); + } finally { + if (returnJedis) + tryReturn(jedis); + } + } + + @Override + public void success() { + // success, so remove 1 from processing queue + removeFromProcessingQueue(null); + } + + @Override + public void error(Throwable e) { + super.error(e); + removeFromProcessingQueue(null); + } + } + + @Override + void deleteQueue() { + deleteQueue(queue, processingQueue); + } + + public static void main(String[] args) { + // set all needed arguments with system properties + new RedisProcessingQueueThread().run(); + } +} diff --git a/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisThread.java b/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisThread.java new file mode 100644 index 0000000..8a1905d --- /dev/null +++ b/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/RedisThread.java @@ -0,0 +1,167 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.processor; + +import com.moparisthebest.jbgjob.AbstractScheduler; +import com.moparisthebest.jbgjob.RedisScheduler; +import com.moparisthebest.jbgjob.ScheduledItem; +import com.moparisthebest.jbgjob.ScheduledItemExecutor; +import com.moparisthebest.jbgjob.result.ExecutionResult; +import com.moparisthebest.jbgjob.result.PrintStackTraceExecutionResult; +import redis.clients.jedis.Jedis; +import redis.clients.jedis.JedisPool; + +import java.util.Arrays; +import java.util.List; + +/** + * Simply reads from the specified queue with BRPOP and processes the job, no errors are recorded and there is no visibility into which jobs are currently being processed. + */ +public class RedisThread extends RedisScheduler implements Runnable { + + public static final int defaultTimeout; + public static final int maxTimeoutsBeforeClose; + + public static int getIntSystemProperty(final String property, final int timeout) { + try { + return Integer.parseInt(System.getProperty(property, timeout + "")); + } catch (Throwable e) { + e.printStackTrace(); + return timeout; + } + } + + static { + defaultTimeout = getIntSystemProperty("redis.timeout", 5);// 5 seconds by default + maxTimeoutsBeforeClose = getIntSystemProperty("redis.maxTimeoutsBeforeClose", 0);// 0 by default, never close + } + + private int timeoutCounter = 0; + + protected final String queue; + protected final String shutdownKey; + protected final ScheduledItemExecutor executor = new ScheduledItemExecutor(); + + public RedisThread() { + this(AbstractScheduler.defaultQueue); + } + + public RedisThread(String queue) { + this(null, queue); + } + + public RedisThread(JedisPool pool, String queue) { + this(defaultQueuePrefix, pool, queue); + } + + public RedisThread(String queuePrefix, JedisPool pool, String queue) { + super(queuePrefix, pool); + this.queue = this.queuePrefix + queue; + this.shutdownKey = this.queuePrefix + "shutdown"; + } + + protected String pollRedis(final Jedis jedis, final int timeout) { + if (debug) System.out.printf("redis> BRPOP %s %d\n", queue, timeout); + final List items = jedis.brpop(timeout, queue); + //System.out.println("items: " + items); + return (items == null || items.size() < 2) ? null : items.get(1); + } + + private static final ExecutionResult noop = new PrintStackTraceExecutionResult(); + + protected ExecutionResult getExecutionResult(final String scheduledItemString) { + return noop; + } + + @Override + public final void run() { + Jedis jedis = null; + outer: + while (true) + try { + jedis = pool.getResource(); + while (true) { + if (debug && maxTimeoutsBeforeClose > 0) System.out.printf("maxTimeoutsBeforeClose: %d timeoutCounter: %d\n", maxTimeoutsBeforeClose, timeoutCounter); + // check to see if we should shutdown + if ("shutdown".equals(jedis.get(this.shutdownKey))) + break outer; + // grab an item, if it's null (probably timed out) try again + final String scheduledItemString = pollRedis(jedis, defaultTimeout); + if (scheduledItemString == null) { + // timed out + if (maxTimeoutsBeforeClose > 0 && ++timeoutCounter >= maxTimeoutsBeforeClose) + break outer; + continue; + } + timeoutCounter = 0; + if (debug) System.out.println("scheduledItemString: " + scheduledItemString); + final ScheduledItem scheduledItem = om.readValue(scheduledItemString, ScheduledItem.class); + if (debug) System.out.println("scheduledItem object: " + scheduledItem); + executor.execute(scheduledItem, getExecutionResult(scheduledItemString)); + } + } catch (Throwable e) { + e.printStackTrace(); + } finally { + tryReturn(jedis); + } + this.close(); + } + + public final void tryReturn(final Jedis jedis) { + if (jedis != null) + try { + pool.returnResource(jedis); + } catch (Throwable e) { + e.printStackTrace(); + } + } + + @Override + public void close() { + super.close(); + executor.close(); + } + + protected void deleteQueue(final String... queue) { + Jedis jedis = null; + try { + jedis = pool.getResource(); + if (debug) System.out.printf("redis> DEL %s\n", Arrays.toString(queue)); + jedis.del(queue); + } catch (Throwable e) { + e.printStackTrace(); + } finally { + tryReturn(jedis); + } + } + + /** + * Only meant to be used by testing frameworks like JUnit + */ + void deleteQueue() { + deleteQueue(queue); + } + + public static void main(String[] args) { + // set all needed arguments with system properties + new RedisThread().run(); + } +} diff --git a/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/ScheduledItemError.java b/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/ScheduledItemError.java new file mode 100644 index 0000000..2841fe1 --- /dev/null +++ b/redisprocessor/src/main/java/com/moparisthebest/jbgjob/processor/ScheduledItemError.java @@ -0,0 +1,61 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.processor; + +import java.io.PrintWriter; +import java.io.StringWriter; + +/** + * Represents an Exception and a serialized ScheduledItem to put in the Redis error queue + */ +public class ScheduledItemError { + private final long date = System.currentTimeMillis(); + private final String exception; + private final String scheduledItemString; + + public ScheduledItemError(final Throwable e, final String scheduledItemString) { + this.scheduledItemString = scheduledItemString; + final StringWriter sw = new StringWriter(); + e.printStackTrace(new PrintWriter(sw)); + this.exception = sw.toString(); + } + + public long getDate() { + return date; + } + + public String getException() { + return exception; + } + + public String getScheduledItemString() { + return scheduledItemString; + } + + @Override + public String toString() { + return "ScheduledItemError{" + + "date=" + date + + ", exception='" + exception + '\'' + + ", scheduledItemString='" + scheduledItemString + '\'' + + "} " + super.toString(); + } +} diff --git a/redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisErrorQueueThreadTest.java b/redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisErrorQueueThreadTest.java new file mode 100644 index 0000000..4b1b2fb --- /dev/null +++ b/redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisErrorQueueThreadTest.java @@ -0,0 +1,34 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.processor; + +import org.junit.BeforeClass; + +public class RedisErrorQueueThreadTest extends RedisThreadTest { + + @BeforeClass + public static void setUpRedisThread() throws Throwable { + System.setProperty("redis.maxTimeoutsBeforeClose", "1"); + rt = new RedisErrorQueueThread(); + rt.deleteQueue(); + } + +} diff --git a/redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisProcessingQueueThreadTest.java b/redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisProcessingQueueThreadTest.java new file mode 100644 index 0000000..13dca83 --- /dev/null +++ b/redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisProcessingQueueThreadTest.java @@ -0,0 +1,34 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.processor; + +import org.junit.BeforeClass; + +public class RedisProcessingQueueThreadTest extends RedisThreadTest { + + @BeforeClass + public static void setUpRedisThread() throws Throwable { + System.setProperty("redis.maxTimeoutsBeforeClose", "1"); + rt = new RedisProcessingQueueThread(); + rt.deleteQueue(); + } + +} diff --git a/redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisThreadTest.java b/redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisThreadTest.java new file mode 100644 index 0000000..b50c959 --- /dev/null +++ b/redisprocessor/src/test/java/com/moparisthebest/jbgjob/processor/RedisThreadTest.java @@ -0,0 +1,49 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob.processor; + +import com.moparisthebest.jbgjob.AbstractSchedulerTests; +import com.moparisthebest.jbgjob.RedisScheduler; +import org.junit.AfterClass; +import org.junit.BeforeClass; + +public class RedisThreadTest extends AbstractSchedulerTests { + + static RedisThread rt; + + @BeforeClass + public static void setUpRedisThread() throws Throwable { + System.setProperty("redis.maxTimeoutsBeforeClose", "1"); + rt = new RedisThread(); + rt.deleteQueue(); + } + + @BeforeClass + public static void setUp() throws Throwable { + bg = new RedisScheduler(); + } + + @AfterClass + public static void testRunRedisThread() throws Throwable { + rt.run(); + rt.deleteQueue(); + } +} diff --git a/redisscheduler/pom.xml b/redisscheduler/pom.xml new file mode 100755 index 0000000..c344ab5 --- /dev/null +++ b/redisscheduler/pom.xml @@ -0,0 +1,68 @@ + + + + + + com.moparisthebest.jbgjob + jbgjob + 0.1-SNAPSHOT + + 4.0.0 + redisscheduler + + + ${project.groupId} + core + ${project.version} + + + redis.clients + jedis + 2.1.0 + + + com.fasterxml.jackson.core + jackson-databind + 2.2.2 + + + + + run-tests + + + maven.test.skip + false + + + + + ${project.groupId} + core + ${project.version} + test-jar + test + + + + + \ No newline at end of file diff --git a/redisscheduler/src/main/java/com/moparisthebest/jbgjob/RedisScheduler.java b/redisscheduler/src/main/java/com/moparisthebest/jbgjob/RedisScheduler.java new file mode 100644 index 0000000..fee2fba --- /dev/null +++ b/redisscheduler/src/main/java/com/moparisthebest/jbgjob/RedisScheduler.java @@ -0,0 +1,86 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +import com.fasterxml.jackson.databind.ObjectMapper; +import redis.clients.jedis.Jedis; +import redis.clients.jedis.JedisPool; +import redis.clients.jedis.JedisPoolConfig; + +/** + * This implementation of Scheduler that serializes the DTO into a redis list for processing elsewhere. + */ +public class RedisScheduler extends AbstractScheduler { + + public static final boolean debug = "true".equalsIgnoreCase(System.getProperty("redis.debug")); // print debug statements, for development only + + public static final String defaultQueuePrefix; + + static { + String prefix = System.getProperty("redis.queuePrefix"); + if (prefix == null) + try { + prefix = java.net.InetAddress.getLocalHost().getHostName(); + } catch (Throwable e) { + } + defaultQueuePrefix = (prefix == null || prefix.isEmpty()) ? "" : (prefix + "-"); + } + + protected final String queuePrefix; + + protected final ObjectMapper om = new ObjectMapper().enableDefaultTyping(); + protected final JedisPool pool; + + public RedisScheduler() { + this(null); + } + + public RedisScheduler(JedisPool pool) { + this(defaultQueuePrefix, pool); + } + + public RedisScheduler(String queuePrefix, JedisPool pool) { + this.queuePrefix = queuePrefix; + this.pool = pool != null ? pool : new JedisPool(new JedisPoolConfig(), System.getProperty("redis.host", "localhost")); + } + + @Override + public boolean schedule(final String queue, final ScheduledItem scheduledItem) { + super.schedule(queue, scheduledItem); + Jedis jedis = null; + try { + final String scheduledItemString = om.writeValueAsString(scheduledItem); + if (debug) System.out.printf("redis> LPUSH %s \"%s\"\n", queuePrefix + queue, scheduledItemString); + jedis = pool.getResource(); + return jedis.lpush(queuePrefix + queue, scheduledItemString) > 0; + } catch (Throwable e) { + e.printStackTrace(); + return false; + } finally { + if (jedis != null) + try { + pool.returnResource(jedis); + } catch (Throwable e) { + e.printStackTrace(); + } + } + } +} diff --git a/redisscheduler/src/test/java/com/moparisthebest/jbgjob/RedisSchedulerTest.java b/redisscheduler/src/test/java/com/moparisthebest/jbgjob/RedisSchedulerTest.java new file mode 100644 index 0000000..7535918 --- /dev/null +++ b/redisscheduler/src/test/java/com/moparisthebest/jbgjob/RedisSchedulerTest.java @@ -0,0 +1,31 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +import org.junit.BeforeClass; + +public class RedisSchedulerTest extends AbstractSchedulerTests { + + @BeforeClass + public static void setUp() throws Throwable { + bg = new RedisScheduler(); + } +} diff --git a/threadscheduler/pom.xml b/threadscheduler/pom.xml new file mode 100755 index 0000000..c500147 --- /dev/null +++ b/threadscheduler/pom.xml @@ -0,0 +1,58 @@ + + + + + + com.moparisthebest.jbgjob + jbgjob + 0.1-SNAPSHOT + + 4.0.0 + threadscheduler + + + ${project.groupId} + core + ${project.version} + + + + + run-tests + + + maven.test.skip + false + + + + + ${project.groupId} + core + ${project.version} + test-jar + test + + + + + \ No newline at end of file diff --git a/threadscheduler/src/main/java/com/moparisthebest/jbgjob/ThreadScheduler.java b/threadscheduler/src/main/java/com/moparisthebest/jbgjob/ThreadScheduler.java new file mode 100644 index 0000000..93fab66 --- /dev/null +++ b/threadscheduler/src/main/java/com/moparisthebest/jbgjob/ThreadScheduler.java @@ -0,0 +1,49 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +/** + * This implementation of Scheduler has a thread pool with a configurable number of threads (default 5) with which to process the DTO inside this JVM. + *

+ * This implementation ignores 'queue', all Jobs are put in the same queue. + */ +public class ThreadScheduler extends AbstractScheduler { + + private static final ScheduledItemExecutor executor = new ScheduledItemExecutor(false); + + @Override + public boolean schedule(final String queue, final ScheduledItem scheduledItem) { + super.schedule(queue, scheduledItem); + try { + executor.execute(scheduledItem); + return true; + } catch (Throwable e) { + e.printStackTrace(); + return false; + } + } + + @Override + public void close() { + super.close(); + executor.close(); + } +} diff --git a/threadscheduler/src/test/java/com/moparisthebest/jbgjob/ThreadSchedulerTest.java b/threadscheduler/src/test/java/com/moparisthebest/jbgjob/ThreadSchedulerTest.java new file mode 100644 index 0000000..432ca7d --- /dev/null +++ b/threadscheduler/src/test/java/com/moparisthebest/jbgjob/ThreadSchedulerTest.java @@ -0,0 +1,31 @@ +/* + * jBgJob (Java Background Job) lets you schedule Java jobs to be ran in the background. They can run in any + * combination of other threads in the same JVM, other JVMs, or multiple other JVMs, even on different machines. + * Copyright (C) 2013 Travis Burtrum (moparisthebest) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package com.moparisthebest.jbgjob; + +import org.junit.BeforeClass; + +public class ThreadSchedulerTest extends AbstractSchedulerTests { + + @BeforeClass + public static void setUp() throws Throwable { + bg = new ThreadScheduler(); + } +}