ceph/teuthology/task/parallel.py
Sage Weil 68888862a1 sequential, parallel: allow entries to be references to top-level config
Often we want to build a test collection that substitutes different
sequences of tasks into a parallel/sequential construction.  However, the
yaml combination that happens when generating jobs is not smart enough to
substitute some fragment into a deeply-nested piece of yaml.

Instead, make these sequences top-level entries in the config dict, and
reference them.  For example:

tasks:
- install:
- ceph:
- parallel:
  - workload
  - upgrade-sequence
workload:
  workunit:
    - something
upgrade-sequence:
  install.restart: [osd.0, osd.1]

Signed-off-by: Sage Weil <sage@inktank.com>
2013-07-23 15:38:29 -07:00

55 lines
1.3 KiB
Python

import sys
import logging
import contextlib
from teuthology import run_tasks
from teuthology import parallel
from ..orchestra import run
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 task 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):
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