use one module for the complete ES communication

aman/com/Euroscope.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+
+import glob
+import os
+import sys
+
+import zmq
+from zmq.asyncio import Context
+import zmq.auth
+from zmq.auth.asyncio import AsyncioAuthenticator
+
+from aman.config import Server
+
+# @brief Receives and sends messages to EuroScope plugins
+class Euroscope:
+    # @brief Initializes the ZMQ socket
+    # @param[in] config The server configuration
+    def __init__(self, config : Server.Server):
+        self.context = Context.instance()
+
+        # initialize the authentication module
+        authLocation = (
+            str(config.ClientKeyPath)
+        )
+        self.auth = AsyncioAuthenticator(context = self.context)
+        self.auth.configure_curve(domain='*', location = authLocation)
+        self.auth.allow('127.0.0.1')
+        self.auth.start()
+
+        # read the certificates
+        keyPairPath = glob.glob(os.path.join(config.ServerKeyPath, '*.key_secret'))
+        if 1 != len(keyPairPath):
+            sys.stderr.write('No public-private keypair found for the server certificate')
+            sys.exit(-1)
+        keyPair = zmq.auth.load_certificate(keyPairPath[0])
+
+        # initialize the receiver
+        self.receiverSocket = self.context.socket(zmq.ROUTER)
+        self.receiverSocket.setsockopt(zmq.CURVE_PUBLICKEY, keyPair[0])
+        self.receiverSocket.setsockopt(zmq.CURVE_SECRETKEY, keyPair[1])
+        self.receiverSocket.setsockopt(zmq.CURVE_SERVER, True)
+        self.receiverSocket.bind('tcp://' + config.Address + ':' + str(config.PortReceiver))
+
+        # initialize the notification
+        self.notificationSocket = self.context.socket(zmq.DEALER)
+        self.notificationSocket.setsockopt(zmq.CURVE_PUBLICKEY, keyPair[0])
+        self.notificationSocket.setsockopt(zmq.CURVE_SECRETKEY, keyPair[1])
+        self.notificationSocket.setsockopt(zmq.CURVE_SERVER, True)
+        self.notificationSocket.bind('tcp://' + config.Address + ':' + str(config.PortNotification))
+
+    def __exit__(self, *_exc):
+        self.auth.stop()