Added mqtt pub/sub synch(Paho lib) Future based and Callback/continuation based (Fuse lib)

tools_scripts/fuse_publisher.groovy

@@ -1,4 +1,4 @@
-@Grab(group='org.fusesource.mqtt-client', module='mqtt-client', version='1.5')
+@Grab(group='org.fusesource.mqtt-client', module='mqtt-client', version='1.10')
 
 import java.net.URISyntaxException
 
@@ -6,7 +6,13 @@ import org.fusesource.mqtt.client.BlockingConnection
 import org.fusesource.mqtt.client.MQTT
 import org.fusesource.mqtt.client.QoS
 
+if (args.size() < 2) {
+    println "Usage publisher <host> <num messages to sent>"
+    return
+}
+
 String host = args[0]
+int numToSend = args[1] as int
 
 MQTT mqtt = new MQTT()
 //mqtt.setHost("test.mosquitto.org", 1883);
@@ -16,7 +22,7 @@ connection.connect()
 
 print "publishing.."
 long startTime = System.currentTimeMillis()
-(1..100000).each {
+(1..numToSend).each {
     connection.publish("/topic", 'Hello world!!'.bytes, QoS.AT_MOST_ONCE, false)
 }
 connection.publish('/exit', 'Exit'.bytes, QoS.AT_MOST_ONCE, false)
@@ -24,4 +30,6 @@ long stopTime = System.currentTimeMillis()
 long spentTime = stopTime -startTime
 println "published in ${spentTime} ms"
 connection.disconnect()
+double msgPerSec = (numToSend / spentTime) * 1000
+println "speed $msgPerSec msg/sec"
 println "disconnected"