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"""Action driver"""
import Bcfg2.Client.Tools
from Bcfg2.Client.Frame import matches_white_list, passes_black_list
"""
<Action timing='pre|post|both'
name='name'
command='cmd text'
when='always|modified'
status='ignore|check'/>
<PostInstall name='foo'/>
=> <Action timing='post'
when='modified'
name='n'
command='foo'
status='ignore'/>
"""
class Action(Bcfg2.Client.Tools.Tool):
"""Implement Actions"""
name = 'Action'
__handles__ = [('PostInstall', None), ('Action', None)]
__req__ = {'PostInstall': ['name'],
'Action': ['name', 'timing', 'when', 'command', 'status']}
def _action_allowed(self, action):
if self.setup['decision'] == 'whitelist' and \
not matches_white_list(action, self.setup['decision_list']):
self.logger.info("In whitelist mode: suppressing Action:" + \
action.get('name'))
return False
if self.setup['decision'] == 'blacklist' and \
not passes_black_list(action, self.setup['decision_list']):
self.logger.info("In blacklist mode: suppressing Action:" + \
action.get('name'))
return False
return True
def RunAction(self, entry):
"""This method handles command execution and status return."""
if not self.setup['dryrun']:
if self.setup['interactive']:
prompt = ('Run Action %s, %s: (y/N): ' %
(entry.get('name'), entry.get('command')))
# py3k compatibility
try:
ans = raw_input(prompt)
except NameError:
ans = input(prompt)
if ans not in ['y', 'Y']:
return False
if self.setup['servicemode'] == 'build':
if entry.get('build', 'true') == 'false':
self.logger.debug("Action: Deferring execution of %s due to build mode" % (entry.get('command')))
return False
self.logger.debug("Running Action %s" % (entry.get('name')))
rc = self.cmd.run(entry.get('command'))[0]
self.logger.debug("Action: %s got rc %s" % (entry.get('command'), rc))
entry.set('rc', str(rc))
if entry.get('status', 'check') == 'ignore':
return True
else:
return rc == 0
else:
self.logger.debug("In dryrun mode: not running action:\n %s" %
(entry.get('name')))
return False
def VerifyAction(self, dummy, _):
"""Actions always verify true."""
return True
def VerifyPostInstall(self, dummy, _):
"""Actions always verify true."""
return True
def InstallAction(self, entry):
"""Run actions as pre-checks for bundle installation."""
if entry.get('timing') != 'post':
return self.RunAction(entry)
return True
def InstallPostInstall(self, entry):
return self.InstallAction(self, entry)
def BundleUpdated(self, bundle, states):
"""Run postinstalls when bundles have been updated."""
for postinst in bundle.findall("PostInstall"):
if not self._action_allowed(postinst):
continue
self.cmd.run(postinst.get('name'))
for action in bundle.findall("Action"):
if action.get('timing') in ['post', 'both']:
if not self._action_allowed(action):
continue
states[action] = self.RunAction(action)
def BundleNotUpdated(self, bundle, states):
"""Run Actions when bundles have not been updated."""
for action in bundle.findall("Action"):
if action.get('timing') in ['post', 'both'] and \
action.get('when') != 'modified':
if not self._action_allowed(action):
continue
states[action] = self.RunAction(action)
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