Agent that adds a user to a group list

Created by: eesaanatluri

This PR contains the first of group management framework's agents, group_member.py agent.

prod_rmq_agents/group_member.py

+#!/usr/bin/env python
+import os
+import json
+import pika
+import shlex
+import rc_util
+from subprocess import Popen,PIPE
+from pathlib import Path
+from rc_rmq import RCRMQ
+import rabbit_config as rcfg
+
+task = "group_member"
+
+args = rc_util.get_args()
+logger = rc_util.get_logger(args)
+
+# Instantiate rabbitmq object
+rc_rmq = RCRMQ({"exchange": rcfg.Exchange, "exchange_type": "topic"})
+
+
+def group_member(ch, method, properties, body):
+    msg = json.loads(body)
+    username = msg["username"]
+    action = msg["action"]
+    msg["task"] = task
+    state = msg["state"]
+
+    try:
+        if 'remove' in msg["groups"]:
+            for each_group in msg["groups"]["remove"]:
+                logger.debug(f'Removing user {username} from group {each_group}')
+                if str(rcfg.bright_cm_version).split(".")[0] == "8":
+                    grp_remove_user_cmd = f'/cm/local/apps/cmd/bin/cmsh -n -c "group; removefrom {each_group} groupmembers {username}; commit;"'
+                else:
+                    grp_remove_user_cmd = f'/cm/local/apps/cmd/bin/cmsh -n -c "group; removefrom {each_group} members {username}; commit;"'
+
+                logger.info(f'Running command: {grp_remove_user_cmd}')
+                proc = Popen(shlex.split(grp_remove_user_cmd), stdout=PIPE, stderr=PIPE)
+                out,err = proc.communicate()
+                logger.debug(f'Result: {err}')
+                logger.info(f'User {username} is removed from {each_group} group')
+
+        if 'add' in msg["groups"]:
+            for each_group in msg["groups"]["add"]:
+                logger.debug(f'Adding user {username} to group {each_group}')
+                if str(rcfg.bright_cm_version).split(".")[0] == "8":
+                    grp_add_user_cmd = f'/cm/local/apps/cmd/bin/cmsh -n -c "group; append {each_group} groupmembers {username}; commit;"'
+                else:
+                    grp_add_user_cmd = f'/cm/local/apps/cmd/bin/cmsh -n -c "group; append {each_group} members {username}; commit;"'
+
+                logger.info(f'Running command: {grp_add_user_cmd}')
+                proc = Popen(shlex.split(grp_add_user_cmd), stdout=PIPE, stderr=PIPE)
+                out,err = proc.communicate()
+                logger.debug(f'Result: {err}')
+                logger.info(f'User {username} is added to {each_group} group')
+
+
+        msg["success"] = True
+
+    except Exception:
+        msg["success"] = False
+        msg["errmsg"] = "Exception raised, while adding user to group {groupname}, check the logs for stack trace"
+        logger.error("", exc_info=True)
+
+
+    corr_id = properties.correlation_id
+    reply_to = properties.reply_to
+
+    logger.debug(f'corr_id: {corr_id} \n reply_to: {reply_to}')
+    # send response to the callback queue
+    if reply_to:
+        props = pika.BasicProperties(correlation_id=corr_id)
+        logger.debug("Sending confirmation back to reply_to")
+        rc_rmq.publish_msg(
+            {
+             "routing_key": reply_to,
+             "props": props,
+             "msg": msg
+            }
+        )
+    else:
+        print("Error: no reply_to")
+
+    logger.debug(f'User {username} confirmation sent from {task}')
+
+    ch.basic_ack(delivery_tag=method.delivery_tag)
+
+
+logger.info(f"Start listening to queue: {task}")
+rc_rmq.bind_queue(queue=task, routing_key='group_member.*', durable=True)
+
+rc_rmq.start_consume(
+    {"queue": task, "cb": group_member}
+)
+
+logger.info("Disconnected")
+rc_rmq.disconnect()      
+