add complete ru zmq examples

examples/zmq/pubsub/ru_zmq_pubsub.py

@@ -0,0 +1,86 @@
+#!/usr/bin/env python3
+
+import time
+
+import threading     as mt
+
+import radical.utils as ru
+
+CHANNEL = 'test'
+TOPIC   = 'test'
+
+
+# ------------------------------------------------------------------------------
+#
+def put(channel, uid, url, n):
+
+    put = ru.zmq.Putter(channel, url)
+    for i in range(n):
+        put.put(ru.as_bytes('%s: message %d' % (uid, i)))
+        print('%s: message %d' % (uid, i))
+        time.sleep(0.1)
+
+    put.put(ru.as_bytes('%s: STOP' % uid))
+
+    print('%s: done' % uid)
+
+
+# ------------------------------------------------------------------------------
+#
+def get(channel, uid, url):
+
+    cont = True
+    get  = ru.zmq.Getter(channel, url)
+
+    while cont:
+
+        msgs = get.get()
+        if not msgs:
+            continue
+
+        print('%s: %s' % (uid, ru.as_string(msgs)))
+
+        for msg in msgs:
+            if 'STOP' in ru.as_string(msg):
+                cont = False
+
+    print('%s: done' % uid)
+
+
+# ------------------------------------------------------------------------------
+#
+def main():
+
+    bridge = ru.zmq.Queue(CHANNEL)
+    bridge.start()
+
+    threads = list()
+
+    # start some putters and getters
+    # NOTE: start more putters than getters for clean termination
+    for i in range(4):
+        t = mt.Thread(target=put, args=(CHANNEL, 'put.%d' % i, bridge.addr_put, 5))
+        t.daemon = True
+        t.start()
+        threads.append(t)
+
+    for i in range(3):
+        t = mt.Thread(target=get, args=(CHANNEL, 'get.%d' % i, bridge.addr_get))
+        t.daemon = True
+        t.start()
+        threads.append(t)
+
+    # wait for completion
+    for t in threads:
+        t.join()
+
+
+# ------------------------------------------------------------------------------
+#
+if __name__ == '__main__':
+
+    main()
+
+
+# ------------------------------------------------------------------------------
+

examples/zmq/queue/ru_zmq_queue.py

@@ -0,0 +1,83 @@
+#!/usr/bin/env python3
+
+import time
+
+import threading     as mt
+
+import radical.utils as ru
+
+CHANNEL = 'channel'
+TOPIC   = 'test'
+
+
+# ------------------------------------------------------------------------------
+#
+def pub(uid, url, topic, n):
+
+    pub = ru.zmq.Publisher(topic, url)
+    for i in range(n):
+        pub.put(topic, ru.as_bytes('%s: message %d' % (uid, i)))
+        print('%s: message %d' % (uid, i))
+        time.sleep(0.1)
+
+    pub.put(topic, ru.as_bytes('%s: STOP' % uid))
+
+    print('%s: done' % uid)
+
+
+# ------------------------------------------------------------------------------
+#
+def sub(uid, url, topic):
+
+    cont = True
+    sub  = ru.zmq.Subscriber(topic, url)
+    sub.subscribe(topic)
+
+    while cont:
+        topic, msg = sub.get()
+        print('%s: %s' % (uid, ru.as_string(msg)))
+
+        if 'STOP' in ru.as_string(msg):
+            cont = False
+
+    print('%s: done' % uid)
+
+
+# ------------------------------------------------------------------------------
+#
+def main():
+
+    bridge = ru.zmq.PubSub(CHANNEL)
+    bridge.start()
+
+    threads = list()
+
+
+    # start some subscribers and publishers
+    for i in range(3):
+        t = mt.Thread(target=sub, args=('sub.%d' % i, bridge.addr_sub, TOPIC))
+        t.daemon = True
+        t.start()
+        threads.append(t)
+
+    for i in range(4):
+        t = mt.Thread(target=pub, args=('pub.%d' % i, bridge.addr_pub, TOPIC, 5))
+        t.daemon = True
+        t.start()
+        threads.append(t)
+
+
+    # wait for completion
+    for t in threads:
+        t.join()
+
+
+# ------------------------------------------------------------------------------
+#
+if __name__ == '__main__':
+
+    main()
+
+
+# ------------------------------------------------------------------------------
+