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Allow groups to be passed to runner API to make parse_hosts optional, misc fixes as a result of refactoring in Runner.

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Cleanup in Playbooks module is next.
This commit is contained in:
Michael DeHaan 2012-03-22 00:30:05 -04:00
parent 94605b811b
commit a8c921cbcc
4 changed files with 44 additions and 33 deletions
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2
examples/playbooks/tasks/base.yml
View file

@ -18,5 +18,5 @@
action: service name=iptables state=stopped
- name: made up task just to show variables work here
action: command /bin/echo release is {{ release }}
action: command /bin/echo release is $release

23
lib/ansible/playbook.py
View file

@ -85,6 +85,9 @@ class PlayBook(object):
self.basedir = os.path.dirname(playbook)
self.playbook = self._parse_playbook(playbook)
self.host_list, self.groups = ansible.runner.Runner.parse_hosts(host_list)
def _get_vars(self, play, dirname):
vars = play.get('vars', {})
if type(vars) != dict:
@ -165,7 +168,6 @@ class PlayBook(object):
# FIXME: TODO: use callback to reinstate per-host summary
# and add corresponding code in /bin/ansible-playbook
# print results
return results
def _prune_failed_hosts(self, host_list):
@ -285,6 +287,7 @@ class PlayBook(object):
''' run a particular module step in a playbook '''
runner = ansible.runner.Runner(
pattern=pattern,
groups=self.groups,
module_name=module,
module_args=args,
host_list=hosts,
@ -317,13 +320,6 @@ class PlayBook(object):
recursively run any subtasks.
'''
if host_list is None:
# pruned host lists occur when running triggered
# actions where not all hosts have changed
# though top-level tasks will pass in "None" here
host_list = self.host_list
(host_list, groups) = ansible.runner.Runner.parse_hosts(host_list)
# do not continue to run tasks on hosts that have had failures
host_list = self._prune_failed_hosts(host_list)
@ -446,6 +442,8 @@ class PlayBook(object):
# in it, which could happen on uncontacted hosts.
if vars_files is not None:
if type(vars_files) != list:
raise errors.AnsibleError("vars_files must be a list")
self.callbacks.on_setup_secondary()
for host in host_list:
cache_vars = SETUP_CACHE.get(host,{})
@ -492,6 +490,7 @@ class PlayBook(object):
# push any variables down to the system
setup_results = ansible.runner.Runner(
pattern=pattern,
groups=self.groups,
module_name='setup',
module_args=push_var_str,
host_list=self.host_list,
@ -540,22 +539,20 @@ class PlayBook(object):
handlers = pg.get('handlers', [])
user = pg.get('user', C.DEFAULT_REMOTE_USER)
self.host_list, groups = ansible.runner.Runner.parse_hosts(self.host_list)
self.callbacks.on_play_start(pattern)
# push any variables down to the system # and get facts/ohai/other data back up
host_list = self._do_setup_step(pattern, vars, user, self.host_list, None)
self.host_list = self._do_setup_step(pattern, vars, user, self.host_list, None)
# now with that data, handle contentional variable file imports!
if len(vars_files) > 0:
host_list = self._do_setup_step(pattern, vars, user, host_list, vars_files)
self.host_list = self._do_setup_step(pattern, vars, user, self.host_list, vars_files)
# run all the top level tasks, these get run on every node
for task in tasks:
self._run_task(
pattern=pattern,
host_list=host_list,
host_list=self.host_list,
task=task,
handlers=handlers,
remote_user=user

42
lib/ansible/runner.py
View file

@ -64,15 +64,21 @@ class Runner(object):
forks=C.DEFAULT_FORKS, timeout=C.DEFAULT_TIMEOUT, pattern=C.DEFAULT_PATTERN,
remote_user=C.DEFAULT_REMOTE_USER, remote_pass=C.DEFAULT_REMOTE_PASS,
background=0, basedir=None, setup_cache=None, transport='paramiko',
conditional='True', verbose=False):
conditional='True', groups={}, verbose=False):
if setup_cache is None:
setup_cache = {}
if basedir is None:
basedir = os.getcwd()
self.generated_jid = str(random.randint(0, 999999999999))
self.connector = ansible.connection.Connection(self, transport)
if type(host_list) == str:
self.host_list, self.groups = self.parse_hosts(host_list)
else:
self.host_list = host_list
self.groups = groups
self.setup_cache = setup_cache
self.conditional = conditional
@ -95,31 +101,37 @@ class Runner(object):
# *****************************************************
@classmethod
def parse_hosts_from_regular_file(cls, host_list, results, groups):
def parse_hosts_from_regular_file(cls, host_list):
''' parse a textual host file '''
results = []
groups = dict(ungrouped=[])
lines = file(host_list).read().split("\n")
group_name = 'ungrouped'
for item in lines:
item = item.lstrip().rstrip()
if item.startswith("#"):
# ignore commented out lines
continue
if item.startswith("["):
pass
elif item.startswith("["):
# looks like a group
group_name = item.replace("[","").replace("]","").lstrip().rstrip()
groups[group_name] = []
elif item != "":
# looks like a regular host
groups[group_name].append(item)
if not item in results:
results.append(item)
return (results, groups)
# *****************************************************
@classmethod
def parse_hosts_from_script(cls, host_list, results, groups):
def parse_hosts_from_script(cls, host_list):
''' evaluate a script that returns list of hosts by groups '''
results = []
groups = dict(ungrouped=[])
host_list = os.path.abspath(host_list)
cls._external_variable_script = host_list
cmd = subprocess.Popen([host_list], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=False)
@ -132,6 +144,7 @@ class Runner(object):
for host in hostlist:
if host not in results:
results.append(host)
return (results, groups)
# *****************************************************
@ -140,23 +153,21 @@ class Runner(object):
''' parse the host inventory file, returns (hosts, groups) '''
if type(host_list) == list:
return (host_list, {})
raise Exception("function can only be called on inventory files")
host_list = os.path.expanduser(host_list)
if not os.path.exists(host_list):
raise errors.AnsibleFileNotFound("inventory file not found: %s" % host_list)
results = []
groups = dict(ungrouped=[])
rc = None
if not os.access(host_list, os.X_OK):
Runner.parse_hosts_from_regular_file(host_list, results, groups)
return Runner.parse_hosts_from_regular_file(host_list)
else:
Runner.parse_hosts_from_script(host_list, results, groups)
return (results, groups)
return Runner.parse_hosts_from_script(host_list)
# *****************************************************
def _matches(self, host_name, pattern=None):
def _matches(self, host_name, pattern):
''' returns if a hostname is matched by the pattern '''
# a pattern is in fnmatch format but more than one pattern
@ -168,7 +179,9 @@ class Runner(object):
pattern = pattern.replace(";",":")
subpatterns = pattern.split(":")
for subpattern in subpatterns:
if subpattern == 'all' or fnmatch.fnmatch(host_name, subpattern):
if subpattern == 'all':
return True
if fnmatch.fnmatch(host_name, subpattern):
return True
elif subpattern in self.groups:
if host_name in self.groups[subpattern]:
@ -539,7 +552,8 @@ class Runner(object):
def _match_hosts(self, pattern):
''' return all matched hosts fitting a pattern '''
return [ h for h in self.host_list if self._matches(h, pattern) ]
rc = [ h for h in self.host_list if self._matches(h, pattern) ]
return rc
# *****************************************************

4
lib/ansible/utils.py
View file

@ -257,7 +257,7 @@ def varReplace(raw, vars):
# Determine replacement value (if unknown variable then preserve
# original)
varname = m.group(1).lower()
replacement = vars.get(varname, m.group())
replacement = str(vars.get(varname, m.group()))
start, end = m.span()
done.append(raw[:start]) # Keep stuff leading up to token
@ -268,7 +268,7 @@ def varReplace(raw, vars):
def template(text, vars):
''' run a text buffer through the templating engine '''
text = varReplace(text, vars)
text = varReplace(str(text), vars)
template = jinja2.Template(text)
return template.render(vars)