Scheduler

Generate messages in specified intervals using java.util.concurrent.ScheduledExecutorService.

Metadata

Property	Value
Scheme	`scheduler`
Support Level	Stable
Labels	core,scheduling
Version	4.10.2

Maven Dependency

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-scheduler</artifactId>
    <version>4.10.2</version>
</dependency>

Endpoint Properties

Name	Type	Required	Default	Description
`name`	string	✓		The name of the scheduler
`includeMetadata`	boolean		`false`	Whether to include metadata in the exchange such as fired time, timer name, timer count etc.
`sendEmptyMessageWhenIdle`	boolean		`false`	If the polling consumer did not poll any files, you can enable this option to send an empty message (no body) instead.
`bridgeErrorHandler`	boolean		`false`	Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions (if possible) occurred while the Camel consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. Important: This is only possible if the 3rd party component allows Camel to be alerted if an exception was thrown. Some components handle this internally only, and therefore bridgeErrorHandler is not possible. In other situations we may improve the Camel component to hook into the 3rd party component and make this possible for future releases. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.
`exceptionHandler`	object			To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored.
`exchangePattern`	object			Sets the exchange pattern when the consumer creates an exchange.
`pollStrategy`	object			A pluggable org.apache.camel.PollingConsumerPollingStrategy allowing you to provide your custom implementation to control error handling usually occurred during the poll operation before an Exchange have been created and being routed in Camel.
`synchronous`	boolean		`false`	Sets whether synchronous processing should be strictly used
`backoffErrorThreshold`	integer			The number of subsequent error polls (failed due some error) that should happen before the backoffMultipler should kick-in.
`backoffIdleThreshold`	integer			The number of subsequent idle polls that should happen before the backoffMultipler should kick-in.
`backoffMultiplier`	integer			To let the scheduled polling consumer backoff if there has been a number of subsequent idles/errors in a row. The multiplier is then the number of polls that will be skipped before the next actual attempt is happening again. When this option is in use then backoffIdleThreshold and/or backoffErrorThreshold must also be configured.
`delay`	integer		`500`	Milliseconds before the next poll.
`greedy`	boolean		`false`	If greedy is enabled, then the ScheduledPollConsumer will run immediately again, if the previous run polled 1 or more messages.
`initialDelay`	integer		`1000`	Milliseconds before the first poll starts.
`poolSize`	integer		`1`	Number of core threads in the thread pool used by the scheduling thread pool. Is by default using a single thread
`repeatCount`	integer		`0`	Specifies a maximum limit of number of fires. So if you set it to 1, the scheduler will only fire once. If you set it to 5, it will only fire five times. A value of zero or negative means fire forever.
`runLoggingLevel`	object		`TRACE`	The consumer logs a start/complete log line when it polls. This option allows you to configure the logging level for that.
`scheduledExecutorService`	object			Allows for configuring a custom/shared thread pool to use for the consumer. By default each consumer has its own single threaded thread pool.
`scheduler`	object		`none`	To use a cron scheduler from either camel-spring or camel-quartz component. Use value spring or quartz for built in scheduler
`schedulerProperties`	object			To configure additional properties when using a custom scheduler or any of the Quartz, Spring based scheduler.
`startScheduler`	boolean		`true`	Whether the scheduler should be auto started.
`timeUnit`	object		`MILLISECONDS`	Time unit for initialDelay and delay options.
`useFixedDelay`	boolean		`true`	Controls if fixed delay or fixed rate is used. See ScheduledExecutorService in JDK for details.