Fission MQT integration with keda (#1657)

Fission MQT integration based on Keda with Kafka connector

test/tests/mqtrigger_kind_keda/kafka/kafka_pub/kafka-pub.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+
+	sarama "github.com/Shopify/sarama"
+)
+
+// Handler posts a message to Kafka Topic
+func Handler(w http.ResponseWriter, r *http.Request) {
+	brokers := []string{"my-cluster-kafka-brokers.my-kafka-project.svc:9092"}
+	producerConfig := sarama.NewConfig()
+	producerConfig.Producer.RequiredAcks = sarama.WaitForAll
+	producerConfig.Producer.Retry.Max = 100
+	producerConfig.Producer.Retry.Backoff = 100
+	producerConfig.Producer.Return.Successes = true
+	producerConfig.Version = sarama.V1_0_0_0
+	producer, err := sarama.NewSyncProducer(brokers, producerConfig)
+	fmt.Println("Created a new producer ", producer)
+	if err != nil {
+		panic(err)
+	}
+	for i := 0; i < 1000; i++ {
+		headers := []sarama.RecordHeader{{Key: []byte("Z-Custom-Name"), Value: []byte("Kafka-Header-test")}}
+		_, _, err = producer.SendMessage(&sarama.ProducerMessage{
+			Topic:   "topic2",
+			Value:   sarama.StringEncoder("{\"name\": \"testvalue\"}"),
+			Headers: headers,
+		})
+
+		if err != nil {
+			w.Write([]byte(fmt.Sprintf("Failed to publish message to topic %s: %v", "testtopic", err)))
+			return
+		}
+	}
+	w.Write([]byte("Successfully sent to testtopic"))
+}