class JobManager(object):
def __init__(self, configuration):
logger.debug("Initialising JobManager.")
self.configuration = configuration
self.backend = RedisJobBackend(configuration)
self.runners = {}
self.in_startup = {}
self.abort_handlers = {}
self.double_process_filter = {}
logger.debug("Subscribing to job status updates.")
pub.subscribe(self.job_status, 'job.status')
def prepare(self, callback, error_callback):
"""
Prepare the job manager, setting up the appropriate backend.
Calls the supplied callbacks when ready.
"""
def abort_existing_jobs(message):
my_uuid = self.configuration.get_node_uuid()
def got_running_jobs(joblist):
# Abort them.
if len(joblist) == 0:
# Nothing to do.
callback(message)
else:
# Abort those jobs.
def abort_one(aborted_message):
try:
job_id = joblist.pop()
self.force_abort(job_id, my_uuid, abort_one)
except KeyError, ex:
# No more to pop off.
callback(message)
# end of abort_one()
# Start aborting.
abort_one('First job')
# end of got_running_jobs()
# On startup, mark any jobs that were RUNNING
# as ABORTED. This handles jobs that did not finish
# due to an error that caused Paasmaker to crash.
# This frees up other nodes who might be depending on
# the jobs.
self.backend.get_node_jobs(
my_uuid,
got_running_jobs,
state=constants.JOB.RUNNING
)
# end of abort_existing_jobs()
self.backend.setup(abort_existing_jobs, error_callback)
self.watchdog = JobManagerBackendWatchdog(self.configuration, self.backend)
def __init__(self, configuration):
logger.debug("Initialising JobManager.")
self.configuration = configuration
self.backend = RedisJobBackend(configuration)
self.runners = {}
self.in_startup = {}
self.abort_handlers = {}
self.double_process_filter = {}
logger.debug("Subscribing to job status updates.")
pub.subscribe(self.job_status, 'job.status')
