start client & rmq stuff

README.txt

@@ -2,4 +2,4 @@
 Our system monitors and restricts students from over drinking when they are downtown.
 
 # Libraries
-pymongo==3.0.3 **Newer versions don't work**
+pymongo==3.5.1 **Newer versions don't work**

client.py

@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+
+import argparse
+
+import pika
+
+from rmq_params import rmq_params
+
+def checkpoint(message):
+    """Prints [CHeckpoint] <message>
+    """
+    print("[Checkpoint] {}".format(message))
+
+def process_response(response):
+    """Process response from serve & update GUI
+    """
+    # Update GUI with color
+    # TODO
+    checkpoint("Update GUI with color \'{}\'".format(color))
+
+    # Wait a few seconds for a possible reject
+    # TODO
+    checkpoint("Drink rejected? \'{}\'".format(reject))
+
+    return
+
+def main():
+    """Processes rfid scans
+    """
+    parser = argparse.ArgumentParser(description='Processses arguments')
+    parse.add_argument('-s', help='Set server IP or hostname', required=True)
+    parse.add_argument('-p', help='Set server Port to receive messages on',
+                       default=8080)
+    parse.add_argument('-z', help='Set size for socket to recive messages',
+                       default=1024)
+
+    # Process args
+    args = parser.parse_args()
+    server_host = args.s
+    server_port = args.p
+    server_size = args.z
+
+    # Setup RabbitMQ
+    credentials = pika.PlainCredentials(rmq_params['username'],
+                                        rmq_params['password'])
+    parameters = pika.ConnectionParameters(host=rmq_host,
+                                           virtual_host=rmq_paras['vhost'],
+                                           credentials=credentials)
+
+    # Connect to RabbitMQ
+    connection = pika.BlockingConnection(parameters)
+    channel = connection.channel()
+
+    # Bind to order queue
+    channel.queue_bind(exchange=rmq_params['exchange'],
+                       queue=rmq_params['order_queue'])
+
+    # Continuously listen for RFID ids
+    while True:
+        # TODO
+        print('Continuously listen for RFID ids')
+        # TODO
+        rfid_id = '123456'
+
+        checkpoint("Received id \'{}\'".format(rfid_id))
+
+        # Submit new drink order to queue
+        channel.basic_publish(exchange=rmq_params['exchange'],
+                              routing_key=rmq_params['order_queue'],
+                              body=rfid_id)
+        checkpoint("Getting status for id \'{}\'".format(rfid_id))
+
+        # Wait for response from server for drink order
+        try:
+            s = socket.socket(AF_INET, socket.SOCK_STREAM)
+            s.connect((server_host, server_port))
+            recv_data = s.recv(server_size)
+            s.close()
+            process_response(recv_data)
+
+        # Error receiving message
+        except Exception as ex:
+            print(ex)
+
+main()

rmq_params.py

@@ -0,0 +1,9 @@
+#!/usr/bin/env python3
+
+# Things used to establish a connection with the RMQ Server
+
+rmq_params = {'vhost': 'my_vhost',
+              'username': 'user',
+              'password': 'pass',
+              'exchange': 'my_exchange',
+              'order_queue': 'my_order_queue'}

server.py

@@ -102,6 +102,14 @@ def allowed_drinks(id):
     return drinks_left
 
 def main():
+    """Create & start 'drinks' queue for submitting drinks
+    """
+
+    # Create order queue
+    # TODO
+
+    # Start consuming drink queue
+    # TODO
 
     # Arguments
     id = 123456