98 lines
2.0 KiB
Go
98 lines
2.0 KiB
Go
package main
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import (
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"fmt"
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"github.com/micro/go-micro/client"
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"github.com/micro/go-micro/cmd"
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c "github.com/micro/go-micro/context"
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example "github.com/micro/go-micro/examples/server/proto/example"
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"golang.org/x/net/context"
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)
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// publishes a message
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func pub() {
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msg := client.NewPublication("topic.go.micro.srv.example", &example.Message{
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Say: "This is a publication",
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})
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// create context with metadata
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ctx := c.WithMetadata(context.Background(), map[string]string{
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"X-User-Id": "john",
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"X-From-Id": "script",
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})
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// publish message
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if err := client.Publish(ctx, msg); err != nil {
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fmt.Println("pub err: ", err)
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return
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}
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fmt.Printf("Published: %v\n", msg)
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}
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func call(i int) {
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// Create new request to service go.micro.srv.example, method Example.Call
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req := client.NewRequest("go.micro.srv.example", "Example.Call", &example.Request{
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Name: "John",
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})
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// create context with metadata
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ctx := c.WithMetadata(context.Background(), map[string]string{
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"X-User-Id": "john",
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"X-From-Id": "script",
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})
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rsp := &example.Response{}
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// Call service
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if err := client.Call(ctx, req, rsp); err != nil {
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fmt.Println("call err: ", err, rsp)
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return
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}
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fmt.Println("Call:", i, "rsp:", rsp.Msg)
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}
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func stream() {
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// Create new request to service go.micro.srv.example, method Example.Call
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req := client.NewRequest("go.micro.srv.example", "Example.Stream", &example.StreamingRequest{
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Count: int64(10),
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})
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rspChan := make(chan *example.StreamingResponse, 10)
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stream, err := client.Stream(context.Background(), req, rspChan)
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if err != nil {
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fmt.Println("err:", err)
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return
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}
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for rsp := range rspChan {
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fmt.Println("Stream: rsp:", rsp.Count)
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}
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if stream.Error() != nil {
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fmt.Println("stream err:", err)
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return
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}
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if err := stream.Close(); err != nil {
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fmt.Println("stream close err:", err)
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}
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}
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func main() {
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cmd.Init()
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fmt.Println("\n--- Call example ---\n")
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for i := 0; i < 10; i++ {
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call(i)
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}
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fmt.Println("\n--- Streamer example ---\n")
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stream()
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fmt.Println("\n--- Publisher example ---\n")
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pub()
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}
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