/*
* Copyright 2002-2024 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
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.scheduling.quartz;
import java.io.IOException;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import javax.sql.DataSource;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.impl.RemoteScheduler;
import org.quartz.impl.SchedulerRepository;
import org.quartz.impl.StdSchedulerFactory;
import org.quartz.simpl.Simple
ThreadPool;
import org.quartz.spi.JobFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.BeanNameAware;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.SmartLifecycle;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.io.support.PropertiesLoaderUtils;
import org.springframework.lang.Nullable;
import org.springframework.scheduling.SchedulingException;
import org.springframework.util.Assert;
import org.springframework.util.CollectionUtils;
/**
* {@link FactoryBean} that creates and configures a Quartz {@link org.quartz.Scheduler},
* manages its lifecycle as part of the Spring application context, and exposes the
* Scheduler as bean reference for dependency injection.
*
* <p>Allows registration of JobDetails, Calendars and Triggers, automatically
*
starting the scheduler on initialization and shutting it down on destruction.
* In scenarios that just require static registration of jobs at startup, there
* is no need to access the Scheduler instance itself in application code.
*
* <p>For dynamic registration of jobs at
runtime, use a bean reference to
* this SchedulerFactoryBean to get direct access to the Quartz Scheduler
* ({@code org.quartz.Scheduler}). This allows you to create new jobs
* and triggers, and also to control and monitor the entire Scheduler.
*
* <p>Note that Quartz instantiates a new Job for each execution, in
* contrast to Timer which uses a TimerTask instance that is shared
* between repeated executions. Just JobDetail descriptors are shared.
*
* <p>When using persistent jobs, it is strongly recommended to perform all
* operations on the Scheduler within Spring-managed (or plain JTA) transactions.
* Else, database locking will not properly work and might even break.
* (See {@link #setDataSource setDataSource} javadoc for details.)
*
* <p>The preferred way to achieve transactional execution is to demarcate
* declarative transactions at the business facade level, which will
* automatically apply to Scheduler operations performed within those scopes.
* Alternatively, you may add transactional advice for the Scheduler itself.
*
* <p>Compatible with Quartz 2.1.4 and higher, as of Spring 4.1.
*
* @author Juergen Hoeller
* @since 18.02.2004
* @see #setDataSource
* @see org.quartz.Scheduler
* @see org.quartz.SchedulerFactory
* @see org.quartz.impl.StdSchedulerFactory
* @see org.springframework.transaction.interceptor.TransactionProxyFactoryBean
*/
public class SchedulerFactoryBean extends SchedulerAccessor implements FactoryBean<Scheduler>,
BeanNameAware, ApplicationContextAware, InitializingBean, DisposableBean, SmartLifecycle {
/**
* The
thread count property.
*/
public static final String PROP_
THREAD_COUNT = "org.quartz.
threadPool.
threadCount";
/**
* The default
thread count.
*/
public static final int DEFAULT_
THREAD_COUNT = 10;
private static final
ThreadLocal<ResourceLoader> configTimeResourceLoaderHolder = new
ThreadLocal<>();
private static final
ThreadLocal<Executor> configTimeTaskExecutorHolder = new
ThreadLocal<>();
private static final
ThreadLocal<DataSource> configTimeDataSourceHolder = new
ThreadLocal<>();
private static final
ThreadLocal<DataSource> configTimeNonTransactionalDataSourceHolder = new
ThreadLocal<>();
/**
* Return the {@link ResourceLoader} for the currently configured Quartz Scheduler,
* to be used by {@link ResourceLoaderClassLoadHelper}.
* <p>This instance will be set before initialization of the corresponding Scheduler,
* and reset immediately afterwards. It is thus only available
during configuration.
* @see #setApplicationContext
* @see ResourceLoaderClassLoadHelper
*/
@Nullable
public static ResourceLoader getConfigTimeResourceLoader() {
return configTimeResourceLoaderHolder.get();
}
/**
* Return the {@link Executor} for the currently configured Quartz Scheduler,
* to be used by {@link LocalTaskExecutor
ThreadPool}.
* <p>This instance will be set before initialization of the corresponding Scheduler,
* and reset immediately afterwards. It is thus only available
during configuration.
* @since 2.0
* @see #setTaskExecutor
* @see LocalTaskExecutor
ThreadPool
*/
@Nullable
public static Executor getConfigTimeTaskExecutor() {
return configTimeTaskExecutorHolder.get();
}
/**
* Return the {@link DataSource} for the currently configured Quartz Scheduler,
* to be used by {@link LocalDataSourceJobStore}.
* <p>This instance will be set before initialization of the corresponding Scheduler,
* and reset immediately afterwards. It is thus only available
during configuration.
* @since 1.1
* @see #setDataSource
* @see LocalDataSourceJobStore
*/
@Nullable
public static DataSource getConfigTimeDataSource() {
return configTimeDataSourceHolder.get();
}
/**
* Return the non-transactional {@link DataSource} for the currently configured
* Quartz Scheduler, to be used by {@link LocalDataSourceJobStore}.
* <p>This instance will be set before initialization of the corresponding Scheduler,
* and reset immediately afterwards. It is thus only available
during configuration.
* @since 1.1
* @see #setNonTransactionalDataSource
* @see LocalDataSourceJobStore
*/
@Nullable
public static DataSource getConfigTimeNonTransactionalDataSource() {
return configTimeNonTransactionalDataSourceHolder.get();
}
@Nullable
private SchedulerFactory schedulerFactory;
private Class<? extends SchedulerFactory> schedulerFactoryClass = StdSchedulerFactory.class;
@Nullable
private String schedulerName;
@Nullable
private Resource configLocation;
@Nullable
private Properties quartzProperties;
@Nullable
private Executor taskExecutor;
@Nullable
private DataSource dataSource;
@Nullable
private DataSource nonTransactionalDataSource;
@Nullable
private Map<String, ?> schedulerContextMap;
@Nullable
private String applicationContextSchedulerContextKey;
@Nullable
private JobFactory jobFactory;
private boolean jobFactorySet = false;
private boolean autoStartup = true;
private int startupDelay = 0;
private int phase = DEFAULT_PHASE;
private boolean exposeSchedulerInRepository = false;
private boolean waitForJobsToCompleteOn
Shutdown = false;
@Nullable
private String beanName;
@Nullable
private ApplicationContext applicationContext;
@Nullable
private Scheduler scheduler;
/**
* Set an external Quartz {@link SchedulerFactory} instance to use.
* <p>Default is an internal {@link StdSchedulerFactory} instance. If this method is
* called, it overrides any class specified through {@link #setSchedulerFactoryClass}
* as well as any settings specified through {@link #setConfigLocation},
* {@link #setQuartzProperties}, {@link #setTaskExecutor} or {@link #setDataSource}.
* <p><b>NOTE:</b> With an externally provided {@code SchedulerFactory} instance,
* local settings such as {@link #setConfigLocation} or {@link #setQuartzProperties}
* will be ignored here in {@code SchedulerFactoryBean}, expecting the external
* {@code SchedulerFactory} instance to get initialized on its own.
* @since 4.3.15
* @see #setSchedulerFactoryClass
*/
public void setSchedulerFactory(SchedulerFactory schedulerFactory) {
this.schedulerFactory = schedulerFactory;
}
/**
* Set the Quartz {@link SchedulerFactory} implementation to use.
* <p>Default is the {@link StdSchedulerFactory} class, reading in the standard
* {@code quartz.properties} from {@code quartz.jar}. For applying custom Quartz
* properties, specify {@link #setConfigLocation "configLocation"} and/or
* {@link #setQuartzProperties "quartzProperties"} etc on this local
* {@code SchedulerFactoryBean} instance.
* @see org.quartz.impl.StdSchedulerFactory
* @see #setConfigLocation
* @see #setQuartzProperties
* @see #setTaskExecutor
* @see #setDataSource
*/
public void setSchedulerFactoryClass(Class<? extends SchedulerFactory> schedulerFactoryClass) {
this.schedulerFactoryClass = schedulerFactoryClass;
}
/**
* Set the name of the Scheduler to create via the SchedulerFactory, as an
* alternative to the {@code org.quartz.scheduler.instanceName} property.
* <p>If not specified, the name will be taken from Quartz properties
* ({@code org.quartz.scheduler.instanceName}), or from the declared
* {@code SchedulerFactoryBean} bean name as a fallback.
* @see #setBeanName
* @see StdSchedulerFactory#PROP_SCHED_INSTANCE_NAME
* @see org.quartz.SchedulerFactory#getScheduler()
* @see org.quartz.SchedulerFactory#getScheduler(String)
*/
public void setSchedulerName(String schedulerName) {
this.schedulerName = schedulerName;
}
/**
* Set the location of the Quartz properties config file, for example
* as classpath resource "classpath:quartz.properties".
* <p>Note: Can be omitted when all necessary properties are specified
* locally via this bean, or when relying on Quartz' default configuration.
* @see #setQuartzProperties
*/
public void setConfigLocation(Resource configLocation) {
this.configLocation = configLocation;
}
/**
* Set Quartz properties, like "org.quartz.
threadPool.class".
* <p>Can be used to override values in a Quartz properties config file,
* or to specify all necessary properties locally.
* @see #setConfigLocation
*/
public void setQuartzProperties(Properties quartzProperties) {
this.quartzProperties = quartzProperties;
}
/**
* Set a Spring-managed {@link Executor} to use as Quartz backend.
* Exposed as
thread pool through the Quartz SPI.
* <p>Can be used to assign a local JDK
ThreadPoolExecutor or a CommonJ
* WorkManager as Quartz backend, to avoid Quartz's manual
thread creation.
* <p>By default, a Quartz Simple
ThreadPool will be used, configured through
* the corresponding Quartz properties.
* @since 2.0
* @see #setQuartzProperties
* @see LocalTaskExecutor
ThreadPool
* @see org.springframework.scheduling.concurrent.
ThreadPoolTaskExecutor
* @see org.springframework.scheduling.concurrent.DefaultManagedTaskExecutor
*/
public void setTaskExecutor(Executor taskExecutor) {
this.taskExecutor = taskExecutor;
}
/**
* Set the default {@link DataSource} to be used by the Scheduler.
* <p>Note: If this is set, the Quartz settings should not define
* a job store "dataSource" to avoid meaningless double configuration.
* Also, do not define a "org.quartz.jobStore.class" property at all.
* (You may explicitly define Spring's {@link LocalDataSourceJobStore}
* but that's the default when using this method anyway.)
* <p>A Spring-specific subclass of Quartz' JobStoreCMT will be used.
* It is therefore strongly recommended to perform all operations on
* the Scheduler within Spring-managed (or plain JTA) transactions.
* Else, database locking will not properly work and might even break
* (for example, if trying to obtain a lock on Oracle without a transaction).
* <p>Supports both transactional and non-transactional DataSource access.
* With a non-XA DataSource and local Spring transactions, a single DataSource
* argument is sufficient. In case of an XA DataSource and global JTA transactions,
* SchedulerFactoryBean's "nonTransactionalDataSource" property should be set,
* passing in a non-XA DataSource that will not participate in global transactions.
* @since 1.1
* @see #setNonTransactionalDataSource
* @see #setQuartzProperties
* @see #setTransactionManager
* @see LocalDataSourceJobStore
*/
public void setDataSource(DataSource dataSource) {
this.dataSource = dataSource;
}
/**
* Set the {@link DataSource} to be used <i>for non-transactional access</i>.
* <p>This is only necessary if the default DataSource is an XA DataSource that will
* always participate in transactions: A non-XA version of that DataSource should
* be specified as "nonTransactionalDataSource" in such a scenario.
* <p>This is not relevant with a local DataSource instance and Spring transactions.
* Specifying a single default DataSource as "dataSource" is sufficient there.
* @since 1.1
* @see #setDataSource
* @see LocalDataSourceJobStore
*/
public void setNonTransactionalDataSource(DataSource nonTransactionalDataSource) {
this.nonTransactionalDataSource = nonTransactionalDataSource;
}
/**
* Register objects in the Scheduler context via a given Map.
* These objects will be available to any Job that runs in this Scheduler.
* <p>Note: When using persistent Jobs whose JobDetail will be kept in the
* database, do not put Spring-managed beans or an ApplicationContext
* reference into the JobDataMap but rather into the SchedulerContext.
* @param schedulerContextAsMap a Map with String keys and any objects as
* values (for example Spring-managed beans)
* @see JobDetailFactoryBean#setJobDataAsMap
*/
public void setSchedulerContextAsMap(Map<String, ?> schedulerContextAsMap) {
this.schedulerContextMap = schedulerContextAsMap;
}
/**
* Set the key of an {@link ApplicationContext} reference to expose in the
* SchedulerContext, for example "applicationContext". Default is none.
* Only applicable when running in a Spring ApplicationContext.
* <p>Note: When using persistent Jobs whose JobDetail will be kept in the
* database, do not put an ApplicationContext reference into the JobDataMap
* but rather into the SchedulerContext.
* <p>In case of a QuartzJobBean, the reference will be applied to the Job
* instance as bean property. An "applicationContext" attribute will
* correspond to a "setApplicationContext" method in that scenario.
* <p>Note that BeanFactory callback interfaces like ApplicationContextAware
* are not automatically applied to Quartz Job instances, because Quartz
* itself is responsible for the lifecycle of its Jobs.
* @see JobDetailFactoryBean#setApplicationContextJobDataKey
* @see org.springframework.context.ApplicationContext
*/
public void setApplicationContextSchedulerContextKey(String applicationContextSchedulerContextKey) {
this.applicationContextSchedulerContextKey = applicationContextSchedulerContextKey;
}
/**
* Set the Quartz {@link JobFactory} to use for this Scheduler.
* <p>Default is Spring's {@link AdaptableJobFactory}, which supports
* {@link java.lang.Runnable} objects as well as standard Quartz
* {@link org.quartz.Job} instances. Note that this default only applies
* to a <i>local</i> Scheduler, not to a RemoteScheduler (where setting
* a custom JobFactory is not supported by Quartz).
* <p>Specify an instance of Spring's {@link SpringBeanJobFactory} here
* (typically as an inner bean definition) to automatically populate a job's
* bean properties from the specified job data map and scheduler context.
* @since 2.0
* @see AdaptableJobFactory
* @see SpringBeanJobFactory
*/
public void setJobFactory(JobFactory jobFactory) {
this.jobFactory = jobFactory;
this.jobFactorySet = true;
}
/**
* Set whether to automatically start the scheduler after initialization.
* <p>Default is "true"; set this to "false" to allow for manual startup.
*/
public void setAutoStartup(boolean autoStartup) {
this.autoStartup = autoStartup;
}
/**
* Return whether this scheduler is configured for auto-startup. If "true",
* the scheduler will start after the context is refreshed and after the
* start delay, if any.
*/
@Override
public boolean isAutoStartup() {
return this.autoStartup;
}
/**
* Specify the phase in which this scheduler should be started and stopped.
* The startup order proceeds from lowest to highest, and the
shutdown order
* is the reverse of that. By default this value is {@code Integer.MAX_VALUE}
* meaning that this scheduler starts as late as possible and stops as soon
* as possible.
* @since 3.0
*/
public void setPhase(int phase) {
this.phase = phase;
}
/**
* Return the phase in which this scheduler will be started and stopped.
*/
@Override
public int getPhase() {
return this.phase;
}
/**
* Set the number of seconds to wait after initialization before
*
starting the scheduler asynchronously. Default is 0, meaning
* immediate synchronous startup on initialization of this bean.
* <p>Setting this to 10 or 20 seconds makes sense if no jobs
* should be run before the entire application has started up.
*/
public void setStartupDelay(int startupDelay) {
this.startupDelay = startupDelay;
}
/**
* Set whether to expose the Spring-managed {@link Scheduler} instance in the
* Quartz {@link SchedulerRepository}. Default is "false", since the Spring-managed
* Scheduler is usually exclusively intended for access within the Spring context.
* <p>Switch this flag to "true" in order to expose the Scheduler globally.
* This is not recommended unless you have an existing Spring application that
* relies on this behavior. Note that such global exposure was the accidental
* default in earlier Spring versions; this has been fixed as of Spring 2.5.6.
*/
public void setExposeSchedulerInRepository(boolean exposeSchedulerInRepository) {
this.exposeSchedulerInRepository = exposeSchedulerInRepository;
}
/**
* Set whether to wait for running jobs to complete on
shutdown.
* <p>Default is "false". Switch this to "true" if you prefer
* fully completed jobs at the expense of a longer
shutdown phase.
* @see org.quartz.Scheduler#
shutdown(boolean)
*/
public void setWaitForJobsToCompleteOn
Shutdown(boolean waitForJobsToCompleteOn
Shutdown) {
this.waitForJobsToCompleteOn
Shutdown = waitForJobsToCompleteOn
Shutdown;
}
@Override
public void setBeanName(String name) {
this.beanName = name;
}
@Override
public void setApplicationContext(ApplicationContext applicationContext) {
this.applicationContext = applicationContext;
}
//---------------------------------------------------------------------
// Implementation of InitializingBean interface
//---------------------------------------------------------------------
@Override
public void afterPropertiesSet() throws Exception {
if (this.dataSource == null && this.nonTransactionalDataSource != null) {
this.dataSource = this.nonTransactionalDataSource;
}
if (this.applicationContext != null && this.resourceLoader == null) {
this.resourceLoader = this.applicationContext;
}
// Initialize the Scheduler instance...
this.scheduler = prepareScheduler(prepareSchedulerFactory());
try {
registerListeners();
registerJobsAndTriggers();
}
catch (Exception ex) {
try {
this.scheduler.
shutdown(true);
}
catch (Exception ex2) {
logger.debug("Scheduler
shutdown exception after registration failure", ex2);
}
throw ex;
}
}
/**
* Create a SchedulerFactory if necessary and apply locally defined Quartz properties to it.
* @return the initialized SchedulerFactory
*/
private SchedulerFactory prepareSchedulerFactory() throws SchedulerException, IOException {
SchedulerFactory schedulerFactory = this.schedulerFactory;
if (schedulerFactory == null) {
// Create local SchedulerFactory instance (typically a StdSchedulerFactory)
schedulerFactory = BeanUtils.instantiateClass(this.schedulerFactoryClass);
if (schedulerFactory instanceof StdSchedulerFactory stdSchedulerFactory) {
initSchedulerFactory(stdSchedulerFactory);
}
else if (this.configLocation != null || this.quartzProperties != null ||
this.taskExecutor != null || this.dataSource != null) {
throw new IllegalArgumentException(
"StdSchedulerFactory required for applying Quartz properties: " + schedulerFactory);
}
// Otherwise, no local settings to be applied via StdSchedulerFactory.initialize(Properties)
}
// Otherwise, assume that externally provided factory has been initialized with appropriate settings
return schedulerFactory;
}
/**
* Initialize the given SchedulerFactory, applying locally defined Quartz properties to it.
* @param schedulerFactory the SchedulerFactory to initialize
*/
private void initSchedulerFactory(StdSchedulerFactory schedulerFactory) throws SchedulerException, IOException {
Properties mergedProps = new Properties();
if (this.resourceLoader != null) {
mergedProps.setProperty(StdSchedulerFactory.PROP_SCHED_CLASS_LOAD_HELPER_CLASS,
ResourceLoaderClassLoadHelper.class.getName());
}
if (this.taskExecutor != null) {
mergedProps.setProperty(StdSchedulerFactory.PROP_
THREAD_POOL_CLASS,
LocalTaskExecutor
ThreadPool.class.getName());
}
else {
// Set necessary default properties here, as Quartz will not apply
// its default configuration when explicitly given properties.
mergedProps.setProperty(StdSchedulerFactory.PROP_
THREAD_POOL_CLASS, Simple
ThreadPool.class.getName());
mergedProps.setProperty(PROP_
THREAD_COUNT, Integer.toString(DEFAULT_
THREAD_COUNT));
}
if (this.configLocation != null) {
if (logger.isDebugEnabled()) {
logger.debug("Loading Quartz config from [" + this.configLocation + "]");
}
PropertiesLoaderUtils.fillProperties(mergedProps, this.configLocation);
}
CollectionUtils.mergePropertiesIntoMap(this.quartzProperties, mergedProps);
if (this.dataSource != null) {
mergedProps.putIfAbsent(StdSchedulerFactory.PROP_JOB_STORE_CLASS, LocalDataSourceJobStore.class.getName());
}
// Determine scheduler name across local settings and Quartz properties...
if (this.schedulerName != null) {
mergedProps.setProperty(StdSchedulerFactory.PROP_SCHED_INSTANCE_NAME, this.schedulerName);
}
else {
String nameProp = mergedProps.getProperty(StdSchedulerFactory.PROP_SCHED_INSTANCE_NAME);
if (nameProp != null) {
this.schedulerName = nameProp;
}
else if (this.beanName != null) {
mergedProps.setProperty(StdSchedulerFactory.PROP_SCHED_INSTANCE_NAME, this.beanName);
this.schedulerName = this.beanName;
}
}
schedulerFactory.initialize(mergedProps);
}
private Scheduler prepareScheduler(SchedulerFactory schedulerFactory) throws SchedulerException {
if (this.resourceLoader != null) {
// Make given ResourceLoader available for SchedulerFactory configuration.
configTimeResourceLoaderHolder.set(this.resourceLoader);
}
if (this.taskExecutor != null) {
// Make given TaskExecutor available for SchedulerFactory configuration.
configTimeTaskExecutorHolder.set(this.taskExecutor);
}
if (this.dataSource != null) {
// Make given DataSource available for SchedulerFactory configuration.
configTimeDataSourceHolder.set(this.dataSource);
}
if (this.nonTransactionalDataSource != null) {
// Make given non-transactional DataSource available for SchedulerFactory configuration.
configTimeNonTransactionalDataSourceHolder.set(this.nonTransactionalDataSource);
}
// Get Scheduler instance from SchedulerFactory.
try {
Scheduler scheduler = createScheduler(schedulerFactory, this.schedulerName);
populateSchedulerContext(scheduler);
if (!this.jobFactorySet && !(scheduler instanceof RemoteScheduler)) {
// Use AdaptableJobFactory as default for a local Scheduler, unless when
// explicitly given a null value through the "jobFactory" bean property.
this.jobFactory = new AdaptableJobFactory();
}
if (this.jobFactory != null) {
if (this.applicationContext != null && this.jobFactory instanceof ApplicationContextAware applicationContextAware) {
applicationContextAware.setApplicationContext(this.applicationContext);
}
if (this.jobFactory instanceof SchedulerContextAware schedulerContextAware) {
schedulerContextAware.setSchedulerContext(scheduler.getContext());
}
scheduler.setJobFactory(this.jobFactory);
}
return scheduler;
}
finally {
if (this.resourceLoader != null) {
configTimeResourceLoaderHolder.remove();
}
if (this.taskExecutor != null) {
configTimeTaskExecutorHolder.remove();
}
if (this.dataSource != null) {
configTimeDataSourceHolder.remove();
}
if (this.nonTransactionalDataSource != null) {
configTimeNonTransactionalDataSourceHolder.remove();
}
}
}
/**
* Create the Scheduler instance for the given factory and scheduler name.
* Called by {@link #afterPropertiesSet}.
* <p>The default implementation invokes SchedulerFactory's {@code getScheduler}
* method. Can be overridden for custom Scheduler creation.
* @param schedulerFactory the factory to create the Scheduler with
* @param schedulerName the name of the scheduler to create
* @return the Scheduler instance
* @throws SchedulerException if thrown by Quartz methods
* @see #afterPropertiesSet
* @see org.quartz.SchedulerFactory#getScheduler
*/
@SuppressWarnings("NullAway")
protected Scheduler createScheduler(SchedulerFactory schedulerFactory, @Nullable String schedulerName)
throws SchedulerException {
// Override
thread context ClassLoader to work around naive Quartz ClassLoadHelper loading.
Thread current
Thread =
Thread.current
Thread();
ClassLoader
threadContextClassLoader = current
Thread.getContextClassLoader();
boolean overrideClassLoader = (this.resourceLoader != null &&
this.resourceLoader.getClassLoader() !=
threadContextClassLoader);
if (overrideClassLoader) {
current
Thread.setContextClassLoader(this.resourceLoader.getClassLoader());
}
try {
SchedulerRepository repository = SchedulerRepository.getInstance();
synchronized (repository) {
Scheduler existingScheduler = (schedulerName != null ? repository.lookup(schedulerName) : null);
Scheduler newScheduler = schedulerFactory.getScheduler();
if (newScheduler == existingScheduler) {
throw new IllegalStateException("Active Scheduler of name '" + schedulerName + "' already registered " +
"in Quartz SchedulerRepository. Cannot create a new Spring-managed Scheduler of the same name!");
}
if (!this.exposeSchedulerInRepository) {
// Need to remove it in this case, since Quartz shares the Scheduler instance by default!
SchedulerRepository.getInstance().remove(newScheduler.getSchedulerName());
}
return newScheduler;
}
}
finally {
if (overrideClassLoader) {
// Reset original
thread context ClassLoader.
current
Thread.setContextClassLoader(
threadContextClassLoader);
}
}
}
/**
* Expose the specified context attributes and/or the current
* ApplicationContext in the Quartz SchedulerContext.
*/
private void populateSchedulerContext(Scheduler scheduler) throws SchedulerException {
// Put specified objects into Scheduler context.
if (this.schedulerContextMap != null) {
scheduler.getContext().putAll(this.schedulerContextMap);
}
// Register ApplicationContext in Scheduler context.
if (this.applicationContextSchedulerContextKey != null) {
if (this.applicationContext == null) {
throw new IllegalStateException(
"SchedulerFactoryBean needs to be set up in an ApplicationContext " +
"to be able to handle an 'applicationContextSchedulerContextKey'");
}
scheduler.getContext().put(this.applicationContextSchedulerContextKey, this.applicationContext);
}
}
/**
* Start the Quartz Scheduler, respecting the "startupDelay" setting.
* @param scheduler the Scheduler to start
* @param startupDelay the number of seconds to wait before
starting
* the Scheduler asynchronously
*/
protected void startScheduler(final Scheduler scheduler, final int startupDelay) throws SchedulerException {
if (startupDelay <= 0) {
logger.info("
Starting Quartz Scheduler now");
scheduler.start();
}
else {
if (logger.isInfoEnabled()) {
logger.info("Will start Quartz Scheduler [" + scheduler.getSchedulerName() +
"] in " + startupDelay + " seconds");
}
// Not using the Quartz startDelayed method since we explicitly want a daemon
//
thread here, not keeping the JVM alive in case of all other
threads ending.
Thread scheduler
Thread = new
Thread(() -> {
try {
TimeUnit.SECONDS.sleep(startupDelay);
}
catch (InterruptedException ex) {
Thread.current
Thread().interrupt();
// simply proceed
}
if (logger.isInfoEnabled()) {
logger.info("
Starting Quartz Scheduler now, after delay of " + startupDelay + " seconds");
}
try {
scheduler.start();
}
catch (SchedulerException ex) {
throw new SchedulingException("Could not start Quartz Scheduler after delay", ex);
}
});
scheduler
Thread.setName("Quartz Scheduler [" + scheduler.getSchedulerName() + "]");
scheduler
Thread.setDaemon(true);
scheduler
Thread.start();
}
}
//---------------------------------------------------------------------
// Implementation of FactoryBean interface
//---------------------------------------------------------------------
@Override
public Scheduler getScheduler() {
Assert.state(this.scheduler != null, "No Scheduler set");
return this.scheduler;
}
@Override
@Nullable
public Scheduler getObject() {
return this.scheduler;
}
@Override
public Class<? extends Scheduler> getObjectType() {
return (this.scheduler != null ? this.scheduler.getClass() : Scheduler.class);
}
@Override
public boolean isSingleton() {
return true;
}
//---------------------------------------------------------------------
// Implementation of SmartLifecycle interface
//---------------------------------------------------------------------
@Override
public void start() throws SchedulingException {
if (this.scheduler != null) {
try {
startScheduler(this.scheduler, this.startupDelay);
}
catch (SchedulerException ex) {
throw new SchedulingException("Could not start Quartz Scheduler", ex);
}
}
}
@Override
public void stop() throws SchedulingException {
if (this.scheduler != null) {
try {
this.scheduler.standby();
}
catch (SchedulerException ex) {
throw new SchedulingException("Could not stop Quartz Scheduler", ex);
}
}
}
@Override
public boolean isRunning() throws SchedulingException {
if (this.scheduler != null) {
try {
return !this.scheduler.isInStandbyMode();
}
catch (SchedulerException ex) {
return false;
}
}
return false;
}
//---------------------------------------------------------------------
// Implementation of DisposableBean interface
//---------------------------------------------------------------------
/**
* Shut down the Quartz scheduler on bean factory
shutdown,
* stopping all scheduled jobs.
*/
@Override
public void destroy() throws SchedulerException {
if (this.scheduler != null) {
logger.info("Shutting down Quartz Scheduler");
this.scheduler.
shutdown(this.waitForJobsToCompleteOn
Shutdown);
}
}
}
我看到的start和你的不一样
探讨了在Android 5.0及以上版本中使用UncaughtExceptionHandler处理异常时遇到的问题，特别是当开启线程可能导致的java.lang.InternalError异常，并提供了解决方案。
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