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Modify /usr/bin/ansible and playbooks to use the new async API.

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This commit is contained in:
Jeroen Hoekx 2012-04-26 20:35:19 +02:00 committed by Michael DeHaan
parent ce9a8c9ffc
commit 029fe1273c
4 changed files with 30 additions and 143 deletions
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72
bin/ansible
View file

@ -21,7 +21,6 @@
import sys
import getpass
import time
import ansible.runner
import ansible.constants as C
@ -40,7 +39,6 @@ class Cli(object):
def __init__(self):
self.stats = callbacks.AggregateStats()
self.callbacks = callbacks.CliRunnerCallbacks()
self.silent_callbacks = callbacks.DefaultRunnerCallbacks()
# ----------------------------------------------
@ -85,8 +83,6 @@ class Cli(object):
if options.tree:
utils.prepare_writeable_dir(options.tree)
if options.seconds:
print "background launch...\n\n"
runner = ansible.runner.Runner(
module_name=options.module_name, module_path=options.module_path,
@ -94,72 +90,32 @@ class Cli(object):
remote_user=options.remote_user, remote_pass=sshpass,
inventory=inventory_manager, timeout=options.timeout,
forks=options.forks,
background=options.seconds, pattern=pattern,
pattern=pattern,
callbacks=self.callbacks, sudo=options.sudo,
sudo_pass=sudopass,
transport=options.connection, debug=options.debug
)
return (runner, runner.run())
if options.seconds:
print "background launch...\n\n"
results, poller = runner.runAsync(options.seconds)
results = self.poll_while_needed(poller, options)
else:
results = runner.run()
return (runner, results)
# ----------------------------------------------
def get_polling_runner(self, old_runner, jid):
return ansible.runner.Runner(
module_name='async_status', module_path=old_runner.module_path,
module_args="jid=%s" % jid, remote_user=old_runner.remote_user,
remote_pass=old_runner.remote_pass, inventory=old_runner.inventory,
timeout=old_runner.timeout, forks=old_runner.forks,
pattern='*', callbacks=self.silent_callbacks,
)
# ----------------------------------------------
def hosts_to_poll(self, results):
hosts = []
for (host, res) in results['contacted'].iteritems():
if res.get('started',False):
hosts.append(host)
return hosts
# ----------------------------------------------
def poll_if_needed(self, runner, results, options, args):
def poll_while_needed(self, poller, options):
''' summarize results from Runner '''
if results is None:
exit("No hosts matched")
# BACKGROUND POLL LOGIC when -B and -P are specified
# FIXME: refactor
if options.seconds and options.poll_interval > 0:
poll_hosts = results['contacted'].keys()
if len(poll_hosts) == 0:
exit("no jobs were launched successfully")
ahost = poll_hosts[0]
jid = results['contacted'][ahost].get('ansible_job_id', None)
if jid is None:
exit("unexpected error: unable to determine jid")
poller.wait(options.seconds, options.poll_interval)
return poller.results
clock = options.seconds
while (clock >= 0):
runner.inventory.restrict_to(poll_hosts)
polling_runner = self.get_polling_runner(runner, jid)
poll_results = polling_runner.run()
runner.inventory.lift_restriction()
if poll_results is None:
break
for (host, host_result) in poll_results['contacted'].iteritems():
# override last result with current status result for report
results['contacted'][host] = host_result
print utils.async_poll_status(jid, host, clock, host_result)
for (host, host_result) in poll_results['dark'].iteritems():
print "FAILED: %s => %s" % (host, host_result)
clock = clock - options.poll_interval
time.sleep(options.poll_interval)
poll_hosts = self.hosts_to_poll(poll_results)
if len(poll_hosts)==0:
break
########################################################
@ -172,6 +128,4 @@ if __name__ == '__main__':
# Generic handler for ansible specific errors
print "ERROR: %s" % str(e)
sys.exit(1)
else:
cli.poll_if_needed(runner, results, options, args)

86
lib/ansible/playbook.py
View file

@ -23,7 +23,6 @@ import ansible.constants as C
from ansible import utils
from ansible import errors
import os
import time
# used to transfer variables to Runner
SETUP_CACHE={ }
@ -254,83 +253,17 @@ class PlayBook(object):
# *****************************************************
def hosts_to_poll(self, results):
''' which hosts need more polling? '''
hosts = []
for (host, res) in results['contacted'].iteritems():
if (host in self.stats.failures) or (host in self.stats.dark):
continue
if not 'finished' in res and not 'skipped' in res and 'started' in res:
hosts.append(host)
return hosts
# *****************************************************
def _async_poll(self, runner, hosts, async_seconds, async_poll_interval, only_if):
def _async_poll(self, poller, async_seconds, async_poll_interval):
''' launch an async job, if poll_interval is set, wait for completion '''
runner.background = async_seconds
results = runner.run()
self.stats.compute(results, poll=True)
if async_poll_interval <= 0:
# if not polling, playbook requested fire and forget
# trust the user wanted that and return immediately
return results
poll_hosts = results['contacted'].keys()
if len(poll_hosts) == 0:
# no hosts launched ok, return that.
return results
ahost = poll_hosts[0]
jid = results['contacted'][ahost].get('ansible_job_id', None)
if jid is None:
# note: this really shouldn't happen, ever
self.callbacks.on_async_confused("unexpected error: unable to determine jid")
return results
clock = async_seconds
host_list = self.hosts_to_poll(results)
poll_results = results
while (clock >= 0):
# poll/loop until polling duration complete
runner.module_args = "jid=%s" % jid
runner.module_name = 'async_status'
runner.background = 0
runner.pattern = '*'
self.inventory.restrict_to(host_list)
poll_results = runner.run()
self.stats.compute(poll_results, poll=True)
host_list = self.hosts_to_poll(poll_results)
self.inventory.lift_restriction()
if len(host_list) == 0:
break
if poll_results is None:
break
# mention which hosts we're going to poll again...
for (host, host_result) in poll_results['contacted'].iteritems():
results['contacted'][host] = host_result
if not host in self.stats.dark and not host in self.stats.failures:
self.callbacks.on_async_poll(jid, host, clock, host_result)
# run down the clock
clock = clock - async_poll_interval
time.sleep(async_poll_interval)
results = poller.wait(async_seconds, async_poll_interval)
# mark any hosts that are still listed as started as failed
# since these likely got killed by async_wrapper
for (host, host_result) in poll_results['contacted'].iteritems():
if 'started' in host_result:
reason = { 'failed' : 1, 'rc' : None, 'msg' : 'timed out' }
self.runner_callbacks.on_failed(host, reason)
results['contacted'][host] = reason
for host in poller.hosts_to_poll:
reason = { 'failed' : 1, 'rc' : None, 'msg' : 'timed out' }
self.runner_callbacks.on_failed(host, reason)
results['contacted'][host] = reason
return results
@ -361,7 +294,12 @@ class PlayBook(object):
if async_seconds == 0:
results = runner.run()
else:
results = self._async_poll(runner, hosts, async_seconds, async_poll_interval, only_if)
results, poller = runner.runAsync(async_seconds)
self.stats.compute(results)
if async_poll_interval > 0:
# if not polling, playbook requested fire and forget
# trust the user wanted that and return immediately
results = self._async_poll(poller, async_seconds, async_poll_interval)
self.inventory.lift_restriction()
return results

8
lib/ansible/utils.py
View file

@ -170,14 +170,6 @@ def path_dwim(basedir, given):
else:
return os.path.join(basedir, given)
def async_poll_status(jid, host, clock, result):
if 'finished' in result:
return "<job %s> finished on %s" % (jid, host)
elif 'failed' in result:
return "<job %s> FAILED on %s" % (jid, host)
else:
return "<job %s> polling on %s, %s remaining" % (jid, host, clock)
def json_loads(data):
return json.loads(data)

9
test/TestPlayBook.py
View file

@ -74,12 +74,15 @@ class TestCallbacks(object):
def on_play_start(self, pattern):
EVENTS.append([ 'play start', [ pattern ]])
def on_async_confused(self, msg):
EVENTS.append([ 'async confused', [ msg ]])
def on_async_ok(self, host, res, jid):
EVENTS.append([ 'async ok', [ host ]])
def on_async_poll(self, jid, host, clock, host_result):
def on_async_poll(self, host, res, jid, clock):
EVENTS.append([ 'async poll', [ host ]])
def on_async_failed(self, host, res, jid):
EVENTS.append([ 'async failed', [ host ]])
def on_unreachable(self, host, msg):
EVENTS.append([ 'failed/dark', [ host, msg ]])