Initial commit

[ta/config-manager.git] / cmframework / src / cmframework / agent / cmagent.py

diff --git a/cmframework/src/cmframework/agent/cmagent.py b/cmframework/src/cmframework/agent/cmagent.py
new file mode 100755 (executable)
index 0000000..c2abaa1
--- /dev/null
+++ b/cmframework/src/cmframework/agent/cmagent.py
@@ -0,0 +1,158 @@
+#! /usr/bin/python
+
+# 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.
+
+from __future__ import print_function
+import sys
+import argparse
+import socket
+import logging
+import subprocess
+
+from cmframework.apis import cmmanage
+from cmframework.apis import cmerror
+from cmframework.utils import cmlogger
+from cmframework.utils import cmalarm
+
+
+class VerboseLogger(object):
+    def __call__(self, msg):
+        print (msg)
+
+
+class CMAgent(object):
+    def __init__(self):
+        self.prog = 'cmagent'
+        self.ip = None
+        self.port = None
+        self.verbose = False
+        self.log_level = cmlogger.CMLogger.str_to_level('debug')
+        self.log_dest = cmlogger.CMLogger.str_to_dest('syslog')
+        self.api = None
+        self.verbose_logger = VerboseLogger()
+
+    @staticmethod
+    def log_level_parser(level):
+        try:
+            return cmlogger.CMLogger.str_to_level(level)
+        except cmerror.CMError as exp:
+            raise argparse.ArgumentTypeError(str(exp))
+
+    @staticmethod
+    def log_dest_parser(dest):
+        try:
+            return cmlogger.CMLogger.str_to_dest(dest)
+        except cmerror.CMError as exp:
+            raise argparse.ArgumentTypeError(str(exp))
+
+    def __call__(self, args):
+        parser = argparse.ArgumentParser(description='Configuration Management Agent',
+                                         prog=self.prog)
+        parser.add_argument('--ip',
+                            dest='ip',
+                            metavar='SERVER-IP',
+                            default='config-manager',
+                            type=str,
+                            action='store')
+
+        parser.add_argument('--port',
+                            dest='port',
+                            metavar='SERVER-PORT',
+                            default=61100,
+                            type=int,
+                            action='store')
+
+        parser.add_argument('--client-lib',
+                            dest='client_lib',
+                            metavar='CLIENT-LIB',
+                            default='cmframework.lib.CMClientImpl',
+                            type=str,
+                            action='store')
+
+        parser.add_argument('--log-level',
+                            dest='log_level',
+                            metavar='LOG-LEVEL',
+                            required=False,
+                            help=('The enabled logging level, possible values are '
+                                  '{debug, info, warn, error}'),
+                            type=CMAgent.log_level_parser,
+                            default=self.log_level,
+                            action='store')
+
+        parser.add_argument('--log-dest',
+                            dest='log_dest',
+                            metavar='LOG-DEST',
+                            required=False,
+                            help='The logs destination, possible values are {console, syslog}',
+                            type=CMAgent.log_dest_parser,
+                            default=self.log_dest,
+                            action='store')
+
+        parser.add_argument('--verbose',
+                            required=False,
+                            default=False,
+                            action='store_true')
+
+        args = parser.parse_args(args)
+
+        self.process(args)
+
+    def _init_api(self, ip, port, client_lib):
+        try:
+            serverip = socket.gethostbyname(ip)
+        except socket.gaierror:
+            # use localhost in-case we cannot resolve the provided hostname
+            serverip = '127.0.0.1'
+
+        self.api = cmmanage.CMManage(serverip, port, client_lib, self.verbose_logger)
+
+    @staticmethod
+    def _reboot_node():
+        cmd = 'systemctl reboot'
+        args = cmd.split()
+        process = subprocess.Popen(args)
+        return process.wait()
+
+    def process(self, args):
+        cmlogger.CMLogger(args.log_dest, args.verbose, args.log_level)
+
+        self._init_api(args.ip, args.port, args.client_lib)
+
+        node_name = socket.gethostname()
+
+        reboot_request_alarm = cmalarm.CMRebootRequestAlarm()
+        reboot_request_alarm.cancel_alarm_for_node(node_name)
+
+        reboot = self.api.activate_node(node_name)
+        if reboot:
+            logging.warn('Going to reboot this node')
+            res = self._reboot_node()
+            if res != 0:
+                logging.error('Reboot failed')
+
+
+def main():
+    try:
+        agent = CMAgent()
+        args = sys.argv[1:]
+        agent(args)
+    except cmerror.CMError as exp:
+        print ('Failed with error: %s' % str(exp))
+        return 1
+    # TODO: catch all exceptions?
+
+
+if __name__ == '__main__':
+    sys.exit(main())