1a8335d088
* Move monasca-agent and extend user detection from postfix
detection plugin to
monasca_setup.detection.utils.get_agent_username()
* Use get_agent_username() rather than static user name in
mon detection plugin
* Add logic for determining monasca-notification user from
process to mon detection plugin
Change-Id: I6a00a8d6574da27274718a71fd813dedd61442b4
(cherry picked from commit f2e00f6ebc)
82 lines
3.1 KiB
Python
82 lines
3.1 KiB
Python
# (c) Copyright 2015-2016 Hewlett Packard Enterprise Development LP
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# Copyright 2017 Fujitsu LIMITED
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# Copyright 2017 SUSE Linux GmbH
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import logging
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import os
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import yaml
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from monasca_setup import agent_config
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from monasca_setup.detection import plugin
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from monasca_setup.detection import utils
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log = logging.getLogger(__name__)
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_POSTFIX_PROC_NAME = 'postfix'
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_POSTFIX_DIRECTORY = """/var/spool/postfix"""
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_POSTFIX_CHECK_COMMAND = ('sudo -l -U {0} find %s/incoming '
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'-type f > /dev/null' % _POSTFIX_DIRECTORY)
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"""Command to verify if user running monasca-agent
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has sudo permission to access postfix directory"""
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class Postfix(plugin.Plugin):
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"""If postfix is running install the default config.
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"""
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ERROR_MSG = 'postfix plugin will not be configured.'
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def _detect(self):
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"""Run detection, set self.available True if the service is detected.
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"""
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try:
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has_process = (utils.find_process_cmdline(_POSTFIX_PROC_NAME)
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is not None)
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agent_user = utils.get_agent_username() if has_process else None
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has_user = agent_user is not None
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has_sudoers = (self._has_sudoers(agent_user)
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if agent_user else False)
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except Exception:
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self.available = False
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detailed_msg = ('Unexpected exception while '
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'running postfix detection.')
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log.exception('%s\n%s' % (detailed_msg, self.ERROR_MSG))
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else:
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self.available = has_process and has_sudoers
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if not self.available:
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if not has_process:
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detailed_msg = ('%s process was not found.'
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% _POSTFIX_PROC_NAME)
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log.info('%s\n%s' % (detailed_msg, self.ERROR_MSG))
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elif not has_user:
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detailed_msg = 'Did not locate agent\'s username.'
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log.error('%s\n%s' % (detailed_msg, self.ERROR_MSG))
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elif not has_sudoers:
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detailed_msg = ('%s cannot access %s directory. '
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'\n Refer to postfix plugin documentation '
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'for more details.'
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% (agent_user, _POSTFIX_DIRECTORY))
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log.error('%s\n%s' % (detailed_msg, self.ERROR_MSG))
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def build_config(self):
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"""Build the config as a Plugins object and return.
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"""
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# A bit silly to parse the yaml only for it to be converted back but this
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# plugin is the exception not the rule
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with open(os.path.join(self.template_dir, 'conf.d/postfix.yaml.example'), 'r') as postfix_template:
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default_net_config = yaml.safe_load(postfix_template.read())
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config = agent_config.Plugins()
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config['postfix'] = default_net_config
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return config
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def dependencies_installed(self):
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return True
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@staticmethod
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def _has_sudoers(agent_user):
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test_sudo = os.system(_POSTFIX_CHECK_COMMAND.format(agent_user))
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return test_sudo == 0
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