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Add polling logic in runner such that all actions get kicked off everywhere then polling

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happens only on needed hosts, allowing some hosts to fail and drop out of the running.
This commit is contained in:
Michael DeHaan 2012-03-11 20:54:54 -04:00
parent 49a636d8a0
commit db7ba87111
4 changed files with 71 additions and 50 deletions
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70
bin/ansible
View file

@ -28,10 +28,11 @@ import sys
import os
import getpass
import shlex
import time
from optparse import OptionParser
import ansible.runner
import ansible.playbook
import ansible.constants as C
from optparse import OptionParser
from ansible.utils import *
########################################################
@ -91,7 +92,7 @@ class Cli(object):
if options.ask_pass:
sshpass = getpass.getpass(prompt="SSH password: ")
return ansible.runner.Runner(
runner = ansible.runner.Runner(
module_name=options.module_name,
module_path=options.module_path,
module_args=shlex.split(options.module_args),
@ -101,15 +102,40 @@ class Cli(object):
timeout=options.timeout,
forks=options.forks,
background=options.seconds,
poll_interval=options.poll_interval,
async_poll_callback=async_poll_status,
pattern=pattern,
verbose=True,
).run()
)
return (runner, runner.run())
# ----------------------------------------------
def output(self, results, options, args):
def get_polling_runner(self, old_runner, hosts, 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,
host_list=hosts,
timeout=old_runner.timeout,
forks=old_runner.forks,
pattern='*',
verbose=True,
)
# ----------------------------------------------
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 output(self, runner, results, options, args):
''' summarize results from Runner '''
if results is None:
@ -117,6 +143,34 @@ class Cli(object):
if options.tree:
prepare_writeable_dir(options.tree)
# 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")
clock = options.seconds
while (clock >= 0):
polling_runner = self.get_polling_runner(runner, poll_hosts, jid)
poll_results = polling_runner.run()
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 async_poll_status(jid, host, clock, host_result)
clock = clock - options.poll_interval
time.sleep(options.poll_interval)
poll_hosts = self.hosts_to_poll(poll_results)
for (host, host_result) in results['contacted'].iteritems():
if 'started' in host_result:
results['contacted'][host] = { 'failed' : 1, 'rc' : None, 'msg' : 'timed out' }
buf = ''
for hostname in contacted_hosts(results):
msg = host_report_msg(
@ -139,7 +193,7 @@ class Cli(object):
if __name__ == '__main__':
cli = Cli()
(options, args) = cli.parse()
results = cli.run(options, args)
cli.output(results, options, args)
(runner, results) = cli.run(options, args)
cli.output(runner, results, options, args)

34
lib/ansible/runner.py
View file

@ -68,8 +68,6 @@ class Runner(object):
basedir=None,
setup_cache={},
transport='paramiko',
poll_interval=None,
async_poll_callback=None,
verbose=False):
'''
@ -99,11 +97,6 @@ class Runner(object):
self.remote_user = remote_user
self.remote_pass = remote_pass
self.background = background
self.poll_interval = poll_interval
self.async_poll_callback = async_poll_callback
if self.async_poll_callback is None:
self.async_poll_callback = async_poll_status
if basedir is None:
basedir = os.getcwd()
@ -363,33 +356,6 @@ class Runner(object):
result = self._execute_normal_module(conn, host, tmp)
else:
result = self._execute_async_module(conn, host, tmp)
if self.poll_interval > 0:
# poll for completion
# FIXME: refactor
(host, ok, launch_result) = result
jid = launch_result.get('ansible_job_id', None)
if jid is None:
return result
if self.async_poll_callback is None:
self.async_poll_callback = async_poll_callback
self.module_name = 'async_status'
self.module_args = [ "jid=%s" % jid ]
clock = self.background
while (clock >= 0):
time.sleep(self.poll_interval)
clock -= self.poll_interval
result = self._execute_normal_module(conn, host, tmp)
(host, ok, real_result) = result
self.async_poll_callback(self, clock, self.poll_interval, ok, host, jid, real_result)
if 'finished' in real_result or 'failed' in real_result:
clock=-1
elif (clock < 0 and not 'finished' in real_result):
return [ host, False, "timer expired" ]
self._delete_remote_files(conn, tmp)
conn.close()
return result
elif self.module_name == 'copy':
result = self._execute_copy(conn, host, tmp)

12
lib/ansible/utils.py
View file

@ -175,12 +175,12 @@ def path_dwim(basedir, given):
else:
return os.path.join(basedir, given)
def async_poll_status(runner, clock, poll_interval, ok, host, jid, result):
if ok and 'finished' in result:
print "<job %s> finished on %s" % (jid, host)
elif not ok or 'failed' in result:
print "<job %s> FAILED on %s" % (jid, host)
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:
print "<job %s> polling on %s, %s remaining" % (jid, host, clock)
return "<job %s> polling on %s, %s remaining" % (jid, host, clock)

5
library/async_status
View file

@ -81,12 +81,13 @@ if mode == 'cleanup':
data = file(log_path).read()
try:
data = json.loads(data)
except:
except Exception, e:
if data == '':
# file not written yet? That means it is running
print json.dumps({
"results_file" : log_path,
"ansible_job_id" : jid,
"traceback" : str(e),
"started" : 1,
})
else:
@ -96,7 +97,7 @@ except:
"results_file" : log_path,
"msg" : "Could not parse job output: %s" % data,
})
sys.exit(1)
sys.exit(0)
if not data.has_key("started"):
data['finished'] = 1