ceph/teuthology/task/parallel.py
2014-03-06 16:56:14 -08:00

58 lines
1.3 KiB
Python

"""
Task to group parallel running tasks
"""
import sys
import logging
from teuthology import run_tasks
from teuthology import parallel
log = logging.getLogger(__name__)
def task(ctx, config):
"""
Run a group of tasks in parallel.
example:
- parallel:
- tasktest:
- tasktest:
You can also reference the job from elsewhere:
foo:
tasktest:
tasks:
- parallel:
- foo
- tasktest:
That is, if the entry is not a dict, we will look it up in the top-level
config.
Sequential tasks and Parallel tasks can be nested.
"""
log.info('starting parallel...')
with parallel.parallel() as p:
for entry in config:
if not isinstance(entry, dict):
entry = ctx.config.get(entry, {})
((taskname, confg),) = entry.iteritems()
p.spawn(_run_spawned, ctx, confg, taskname)
def _run_spawned(ctx,config,taskname):
"""Run one of the tasks (this runs in parallel with others)"""
mgr = {}
try:
log.info('In parallel, running task %s...' % taskname)
mgr = run_tasks.run_one_task(taskname, ctx=ctx, config=config)
if hasattr(mgr, '__enter__'):
mgr.__enter__()
finally:
exc_info = sys.exc_info()
if hasattr(mgr, '__exit__'):
mgr.__exit__(*exc_info)
del exc_info