+# Copyright 2019 Nokia
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import os
+import subprocess
+import pwd
+import logging
+
+from cmframework.apis import cmerror
+
+
+class CMActivator(object):
+ ansible_bin = '/usr/local/bin/openstack-ansible'
+ admin_user_file = '/etc/admin_user'
+
+ def __init__(self):
+ self.plugin_client = None
+ try:
+ with open(CMActivator.admin_user_file, 'r') as f:
+ self.admin_user = f.read()
+ except IOError:
+ pass
+
+ # pylint: disable=no-self-use
+ def get_subscription_info(self):
+ """get the subscription filter
+
+ This API is used to get the re for matching the properties which the
+ activation plugin is concerned about.
+
+ Return:
+
+ A string representing the regular expression used to match the
+ properties which the activation plugin is concerned about.
+
+ Raise:
+
+ CMError can be raised in-case of a failure.
+ """
+ raise cmerror.CMError('Not implemented')
+
+ # pylint: disable=no-self-use, unused-argument
+ def activate_set(self, props):
+ """activate a configuration data addition/update
+
+ Arguments:
+
+ props: A dictionary of name-value pairs representing the changed
+ properties.
+
+ Raise:
+
+ CMError can be raised in-case of an error
+ """
+ raise cmerror.CMError('Not implemented')
+
+ # pylint: disable=no-self-use, unused-argument
+ def activate_delete(self, props):
+ """activate a configuration data deletion
+
+ Arguments:
+
+ props: A list of deleted property names.
+
+ Raise:
+
+ CMError can be raised in-case of an error
+ """
+ raise cmerror.CMError('Not implemented')
+
+ # pylint: disable=no-self-use, unused-argument
+ def activate_full(self, target):
+ """perform a full activation
+
+ Arguments:
+
+ target: None if activating all nodes
+ Node name string if activating only one node
+
+ Raise:
+
+ CMError can be raised in-case of an error
+ """
+ raise cmerror.CMError('Not implemented')
+
+ # pylint: disable=no-self-use
+ def get_plugin_client(self):
+ """get the plugin client object
+
+ This API can be used by the plugin to get the client object which the
+ plugin can use to access the configuration data. Notice that the data
+ accessed by this is what is stored in the backend. The changed data
+ is passed as argument to the different validate functions.
+
+ Return:
+
+ The plugin client object
+ """
+ return self.plugin_client
+
+ def run_playbook(self, playbook, target=None):
+ playbook_dir = os.path.dirname(playbook)
+
+ arguments = []
+ arguments.append('-b')
+ arguments.append('-u {}'.format(self.admin_user))
+ if target:
+ arguments.append('--limit {}'.format(target))
+ arguments.append(playbook)
+
+ cmd = '{} {}'.format(CMActivator.ansible_bin, ' '.join(arguments))
+ out, result = self._run_cmd_as_user(cmd, playbook_dir, self.admin_user)
+ if result != 0:
+ raise cmerror.CMError('Playbook {} failed: {}'.format(playbook, out))
+ logging.debug('Playbook out: %s', out)
+
+ def _run_cmd_as_user(self, cmd, cwd, user):
+ pw_record = pwd.getpwnam(user)
+ user_name = pw_record.pw_name
+ user_home_dir = pw_record.pw_dir
+ user_uid = pw_record.pw_uid
+ user_gid = pw_record.pw_gid
+ env = os.environ.copy()
+ env['CONFIG_PHASE'] = 'postconfig'
+ env['HOME'] = user_home_dir
+ env['LOGNAME'] = user_name
+ env['PWD'] = cwd
+ env['USER'] = user_name
+ p = subprocess.Popen(cmd.split(), preexec_fn=self._demote(user_uid, user_gid),
+ cwd=cwd, env=env, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+ out, _ = p.communicate()
+ return (out, p.returncode)
+
+ def _demote(self, user_uid, user_gid):
+ def result():
+ os.setgid(user_gid)
+ os.setuid(user_uid)
+
+ return result
+
+
+class CMGlobalActivator(CMActivator):
+ def __init__(self):
+ super(CMGlobalActivator, self).__init__()
+
+
+class CMLocalActivator(CMActivator):
+ def __init__(self):
+ super(CMLocalActivator, self).__init__()
+ self.hostname = None
+
+ def get_hostname(self):
+ """get the node name
+
+ This API is used to get the name of the node where activation is
+ ongoing.
+
+ Return:
+
+ The node name
+ """
+ return self.hostname
+
+
+def main():
+ def print_type(activator):
+ if isinstance(activator, CMLocalActivator):
+ print 'Local activator'
+ elif isinstance(activator, CMActivator):
+ print 'Activator'
+ else:
+ print 'Unknown'
+
+ activator = CMActivator()
+ localactivator = CMLocalActivator()
+
+ x = 100
+
+ print_type(activator)
+ print_type(localactivator)
+ print_type(x)
+
+
+if __name__ == '__main__':
+ main()