增加 NATS Golang Client 示例代码.

Signed-off-by: rick.chan <chenyang@autoai.com>

Midware/NATS/Client/Golang/natspub.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/nats-io/nats.go"
+)
+
+func main() {
+	nc, err := nats.Connect(nats.DefaultURL)
+	defer nc.Close()
+	if nil != err {
+		fmt.Println(err)
+		return
+	}
+
+	for {
+		nc.Publish("foo", []byte("Hello Publish!"))
+		time.Sleep(1 * time.Second)
+	}
+}

Midware/NATS/Client/Golang/natsreq.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/nats-io/nats.go"
+)
+
+func main() {
+	nc, err := nats.Connect(nats.DefaultURL)
+	defer nc.Close()
+	if nil != err {
+		fmt.Println(err)
+		return
+	}
+
+	for {
+		m, err := nc.Request("foo", []byte("Hello Request!"), 1*time.Second)
+		if nil != err {
+			fmt.Println(err)
+			return
+		}
+		fmt.Printf("Received a Response: %s\n", string(m.Data))
+		time.Sleep(1 * time.Second)
+	}
+}

Midware/NATS/Client/Golang/natsrply.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/nats-io/nats.go"
+)
+
+func main() {
+	nc, err := nats.Connect(nats.DefaultURL)
+	defer nc.Close()
+	if nil != err {
+		fmt.Println(err)
+		return
+	}
+	wg := sync.WaitGroup{}
+	wg.Add(10)
+
+	nc.Subscribe("foo", func(m *nats.Msg) {
+		fmt.Printf("Received a message: %s\n", string(m.Data))
+		m.Respond(m.Data)
+		wg.Done()
+	})
+	wg.Wait()
+}

Midware/NATS/Client/Golang/natssub.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/nats-io/nats.go"
+)
+
+func main() {
+	nc, err := nats.Connect(nats.DefaultURL)
+	defer nc.Close()
+	if nil != err {
+		fmt.Println(err)
+		return
+	}
+	wg := sync.WaitGroup{}
+	wg.Add(10)
+
+	nc.Subscribe("foo", func(m *nats.Msg) {
+		fmt.Printf("Received a message: %s\n", string(m.Data))
+		wg.Done()
+	})
+	wg.Wait()
+}