osgi.enroute.scheduler.api

Problem

You use the Scheduler API in the following cases:

• Delays – scheduler.after( ()-> foo(), 100 )
• Running at a certain time – scheduler.at( Instant.from( dateTime ) )
• Periodic Schedules – scheduler.schedule( ()-> foo(), 10, 20 , 40, 100 )
• Cron Schedules – scheduler.schedule( () -> foo(), "10 10 10 FRI#3 JAN-JUN ?" )
• Timeout on Promises – CancelablePromise<Integer> cp = scheduler.before( p, 100 )
• Execute some work on another thread – scheduler.after( C::work, 0)

Background

Basically the API replaces the Java Timer and ScheduledExecutor while providing quite a bit more bang for the buck. It is bundle aware so that any schedules or delays are properly canceled when the bundle is stopped.

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Configuration

Implementations must follow the PID osgi.enroute.rest which must support at least the following fields:

• alias – The primary end-point