Executes Jobs periodically at a specific point in time and repeats this at a time-intervalby Swing Entwicklung betrieblicher Informationssysteme GmbH http://www.swing-system.com
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|Also available in version||v 8.0 v 7.0|
Executes job at a specific point in time and repeats this at a time-interval.
- Main features:
- Executes a function "Function" on object "Object" with arguments "Arguments"
- Starts the function at precise time "Start Time" (or on following periods, see below)
- Periodic execution according to specified, precise intervals (see below)
- Jobs may be executed in parallel, according to their start time
- Double-start protection (do not execute the same job more than once in parallel)
- The termination of the last successfull execution is stored ("Last Execution Time")
- Jobs are terminated when the server terminates
- Insertion, deletion of jobs take immediate effect
- Optionally, the missed executions can be repeated after a server outage ("Repeat Missed")
- Optionally, a fixed number of execution times can be specified ("Number of Calls")
- Optionally, a notification mail will be sent in case of errors
- Optionally, an execution dependency between jobs during server-startup can be specified ("Startup Predecessor") This specifies the job that has to be executed in advance during a server-startup.
- Interval Types:
- 'Minutes' : Jobs are executed at "Interval Number" minutes relative to "Start Time"
- 'Hours' : Jobs are executed at "Interval Number" hours relative to "Start Time"
- 'Days' : Jobs are executed at "Interval Number" days at "Start Time"
- 'Days of Week' : Jobs are executed at specified weekday (according to ISO-numbering: 1=monday, 2=tuesday, ..., 7=sunday) at "Start Time"
- 'Days of Month' : Jobs are executed at specified day of month at "Start Time" (1=first day, 2=second day, -1=ultimo).
Notes: Carefully planned time-triggered jobs can be very resource-efficient.
When using interval type 'Days', it is assumed that the start day is irrelevant. Note that - depending on the calendar and on the interval - this day will shift anyway over years. The implementation calculates the interval relative to the "Last execution time". Therefore, by deleting/reinserting of a job this day can be specified.
With "Startup Predecessor" complex dependency trees can be specified. Circular dependencies are (obviously) not allowed.
"Repeat Missed" and "Startup Predecessor" have a necessary - but not obvious - drawback: During server startup, those jobs have to be executed prior to any other job - this may take a long time. Use those features judiciously.
Depending on the log_level of the server, information (elapsed time / CPU time) about the executed jobs are written to the server log.
The specified 'Function' must be known to the 'Object'.
- The object 'Timed Job' provides two convenience functions for testing and sanity:
- test(self, cr, uid, args=) : for testing - args is a floating point number of seconds that this function will last - args is a String that will be written to the server log
- thread_watchdog(self, cr, uid, args=) : checks all threads and their states and writes anomalies to the server log
- Programmatic interface :
- _time_granule: A datetime.timedelta (default 10sec) that specifies the sparse time base (a value of 0 will not work!)
- _max_scheduler_delta: A datetime.timedelta (default 6hours) that specifies the maximum interval for the scheduler to be executed
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