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Fix handling of list=status such that it will actually work in absense of the state command, to

make it useful from /usr/bin/ansible and the API.  Also some minor style fixes.
This commit is contained in:
Michael DeHaan 2012-04-26 22:43:36 -04:00
parent ea296e9edb
commit b56efa7809

View file

@ -25,18 +25,19 @@ import sys
import shlex
import subprocess
# TODO: switch to fail_json and other helper functions
# like other modules are using
# ===========================================
SERVICE = '/sbin/service'
def _run(cmd):
''' :Return: A tuple of ``(returncode, stdout, stderr)`` resulting from executing
`cmd` with the shell. '''
# returns (rc, stdout, stderr) from shell command
process = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
stdout, stderr = process.communicate()
return (process.returncode, stdout, stderr)
argfile = sys.argv[1]
args = open(argfile, 'r').read()
items = shlex.split(args)
@ -48,84 +49,113 @@ if not len(items):
params = {}
for arg in items:
if "=" not in arg:
print json.dumps(dict(failed=True, msg='expected arguments of the form name=value'))
print json.dumps(dict(failed=True, msg='expected key=value format arguments'))
sys.exit(1)
(name, value) = arg.split("=")
params[name] = value
name = params['name']
state = params.get('state','unknown')
list_ = params.get('list')
name = params.get('name', None)
if name is None:
print json.dumps(dict(failed=True, msg='missing name'))
sys.exit(1)
state = params.get('state', None)
list_items = params.get('list', None)
# running and started are the same
if state not in [ 'running', 'started', 'stopped', 'restarted' ]:
print json.dumps(dict(failed=True, msg='invalid state'))
if state and state not in [ 'running', 'started', 'stopped', 'restarted' ]:
print json.dumps(dict(failed=True, msg='invalid value for state'))
sys.exit(1)
if list_ and list_ not in ('status',):
print json.dumps(dict(failed=True, msg='invalid argument to list'))
if list_items and list_items not in [ 'status' ]:
print json.dumps(dict(failed=True, msg='invalid value for list'))
sys.exit(1)
# ===========================================
# get service status
rc, stdout, stderr = _run("%s %s status" % (SERVICE, name))
rc, status_stdout, status_stderr = _run("%s %s status" % (SERVICE, name))
status = status_stdout + status_stderr
# ===========================================
# determine if we are going to change anything
running = False
if stdout.find("not running") != -1:
if status_stdout.find("not running") != -1:
running = False
elif stdout.find("running") != -1:
elif status_stdout.find("running") != -1:
running = True
elif name == 'iptables' and stdout.find("ACCEPT") != -1:
elif name == 'iptables' and status_stdout.find("ACCEPT") != -1:
# iptables status command output is lame
# TODO: lookup if we can use a return code for this instead?
running = True
changed = False
if not running and state == "started":
changed = True
elif running and state == "stopped":
changed = True
elif state == "restarted":
changed = True
# ===========================================
# run change commands if we need to
if state:
# a state change command has been requested
# ===========================================
# determine if we are going to change anything
changed = False
if not running and state == "started":
changed = True
elif running and state == "stopped":
changed = True
elif state == "restarted":
changed = True
# ===========================================
# run change commands if we need to
rc = 0
if changed:
if state in ('started', 'running'):
rc, stdout, stderr = _run("%s %s start" % (SERVICE, name))
elif state == 'stopped':
rc, stdout, stderr = _run("%s %s stop" % (SERVICE, name))
elif state == 'restarted':
rc1, stdout1, stderr1 = _run("%s %s stop" % (SERVICE, name))
rc2, stdout2, stderr2 = _run("%s %s start" % (SERVICE, name))
rc = rc1 and rc2
stdout = stdout1 + stdout2
stderr = stderr1 + stderr2
if rc != 0:
print json.dumps({
"failed" : 1,
"rc" : rc,
})
print >> sys.stderr, stdout + stderr
sys.exit(1)
rc = 0
if changed:
if state in ('started', 'running'):
rc, stdout, stderr = _run("%s %s start" % (SERVICE, name))
elif state == 'stopped':
rc, stdout, stderr = _run("%s %s stop" % (SERVICE, name))
elif state == 'restarted':
rc1, stdout1, stderr1 = _run("%s %s stop" % (SERVICE, name))
rc2, stdout2, stderr2 = _run("%s %s start" % (SERVICE, name))
rc = rc1 and rc2
stdout = stdout1 + stdout2
stderr = stderr1 + stderr2
# ===============================================
# success
if rc != 0:
print json.dumps({
"failed" : 1,
"rc" : rc,
})
print >> sys.stderr, stdout + stderr
sys.exit(1)
result = {"changed": changed}
# ===============================================
# success
result = {"changed": changed}
if list_ == 'status':
rc, stdout, stderr = _run("%s %s status" % (SERVICE, name))
result['status'] = stdout
print json.dumps(result)
if list_items and list_items in [ 'status' ]:
result['status'] = stdout
print json.dumps(result)
elif list_items is not None:
# solo list=status mode, don't change anything, just return
# suitable for /usr/bin/ansible usage or API, playbooks
# not so much
print json.dumps({
"status" : status
})
else:
print json.dumps(dict(failed=True, msg="expected state or list parameters"))
sys.exit(0)