Rewrite slurm account agent

slurm_agent.py

@@ -6,60 +6,40 @@ import socket
 import subprocess
 import time
 import json
+from rc_rmq import RCRMQ
 
-hostname = socket.gethostname().split(".", 1)[0]
-connect_host = rcfg.Server if hostname != rcfg.Server else "localhost"
-queue_name = "slurm_add_account"
-duration = 2
+task = 'slurm_account'
 
-# Set up credentials to connect to RabbitMQ server
-credentials = pika.PlainCredentials(rcfg.User, rcfg.Password)
-parameters = pika.ConnectionParameters(connect_host,
-                                   rcfg.Port,
-                                   rcfg.VHost,
-                                   credentials)
-
-# Establish connection to RabbitMQ server
-connection = pika.BlockingConnection(parameters)
-channel = connection.channel()
-
-print("connection established. Listening for messages:")
-
-# create exchange to pass messages
-channel.exchange_declare(exchange=rcfg.Exchange, exchange_type='direct')
-
-# creates a random name for the newly generated queue
-result = channel.queue_declare(queue=queue_name, exclusive=False)
-
-channel.queue_bind(exchange=rcfg.Exchange, queue=queue_name, routing_key=queue_name)
+# Instantiate rabbitmq object
+rc_rmq = RCRMQ({'exchange': 'RegUsr', 'exchange_type': 'topic'})
 
 def slurm_account_create(ch, method, properties, body):
     msg = json.loads(body)
     print("Message received {}".format(msg))
     username = msg['username']
+    success = False
     try:
         subprocess.call(["sudo", "sacctmgr", "add", "account", username, "-i",  "Descripition: Add user"])
         subprocess.call(["sudo", "sacctmgr", "add", "user", username, "account="+username, "-i"])
         print("SLURM account for user {} has been added".format(username))
+        success = True
     except:
         print("Failed to create user")
     
-    channel.basic_ack(delivery_tag=method.delivery_tag)
-        
-    channel.basic_publish(exchange=rcfg.Exchange, routing_key=username, body=json.dumps(msg))
-    
-
-# ingest messages
-channel.basic_consume(queue=queue_name, on_message_callback=slurm_account_create)
-
-# initiate message ingestion
-try:
-    channel.start_consuming()
-except KeyboardInterrupt:
-    print("Disconnecting from broker.")
-    channel.stop_consuming()
-
-connection.close()
-
-        
-    
+    ch.basic_ack(delivery_tag=method.delivery_tag)
+
+    # send confirm message
+    rc_rmq.publish_msg({
+        'routing_key': 'confirm.' + username,
+        'msg': {
+            'task': task,
+            'success': success
+        }
+    })
+
+print("Start listening to queue: {}".format(task))
+rc_rmq.start_consume({
+    'queue': task,
+    'routing_key': "create.*",
+    'cb': slurm_account_create
+})