Fix the breaking build

This commit is contained in:
Asim 2015-11-26 20:43:33 +00:00
parent fb172df0ce
commit dc5f121c64
2 changed files with 56 additions and 87 deletions

View File

@ -2,6 +2,7 @@ package main
import ( import (
"fmt" "fmt"
"time"
"github.com/micro/go-micro/client" "github.com/micro/go-micro/client"
"github.com/micro/go-micro/cmd" "github.com/micro/go-micro/cmd"
@ -10,6 +11,42 @@ import (
"golang.org/x/net/context" "golang.org/x/net/context"
) )
// wrapper example code
// log wrapper logs every time a request is made
type logWrapper struct {
client.Client
}
func (l *logWrapper) Call(ctx context.Context, req client.Request, rsp interface{}) error {
md, _ := c.GetMetadata(ctx)
fmt.Printf("[Log Wrapper] ctx: %v service: %s method: %s\n", md, req.Service(), req.Method())
return l.Client.Call(ctx, req, rsp)
}
// trace wrapper attaches a unique trace ID - timestamp
type traceWrapper struct {
client.Client
}
func (t *traceWrapper) Call(ctx context.Context, req client.Request, rsp interface{}) error {
ctx = c.WithMetadata(ctx, map[string]string{
"X-Trace-Id": fmt.Sprintf("%d", time.Now().Unix()),
})
return t.Client.Call(ctx, req, rsp)
}
// Implements client.Wrapper as logWrapper
func logWrap(c client.Client) client.Client {
return &logWrapper{c}
}
// Implements client.Wrapper as traceWrapper
func traceWrap(c client.Client) client.Client {
return &traceWrapper{c}
}
// publishes a message
func pub() { func pub() {
msg := client.NewPublication("topic.go.micro.srv.example", &example.Message{ msg := client.NewPublication("topic.go.micro.srv.example", &example.Message{
Say: "This is a publication", Say: "This is a publication",
@ -82,10 +119,29 @@ func stream() {
func main() { func main() {
cmd.Init() cmd.Init()
fmt.Println("\n--- Call example ---\n")
for i := 0; i < 10; i++ { for i := 0; i < 10; i++ {
call(i) call(i)
} }
fmt.Println("\n--- Streamer example ---\n")
stream() stream()
fmt.Println("\n--- Publisher example ---\n")
pub() pub()
fmt.Println("\n--- Wrapper example ---\n")
// Wrap the default client
client.DefaultClient = logWrap(client.DefaultClient)
call(0)
// Wrap using client.Wrap option
client.DefaultClient = client.NewClient(
client.Wrap(traceWrap),
client.Wrap(logWrap),
)
call(1)
} }

View File

@ -1,87 +0,0 @@
/*
An example of how to use client.Wrapper as middleware
*/
package main
import (
"fmt"
"time"
"github.com/micro/go-micro/client"
"github.com/micro/go-micro/cmd"
c "github.com/micro/go-micro/context"
example "github.com/micro/go-micro/examples/server/proto/example"
"golang.org/x/net/context"
)
// log wrapper logs every time a request is made
type logWrapper struct {
client.Client
}
func (l *logWrapper) Call(ctx context.Context, req client.Request, rsp interface{}) error {
md, _ := c.GetMetadata(ctx)
fmt.Printf("[Log Wrapper] ctx: %v service: %s method: %s\n", md, req.Service(), req.Method())
return l.Client.Call(ctx, req, rsp)
}
// trace wrapper attaches a unique trace ID - timestamp
type traceWrapper struct {
client.Client
}
func (t *traceWrapper) Call(ctx context.Context, req client.Request, rsp interface{}) error {
ctx = c.WithMetadata(ctx, map[string]string{
"X-Trace-Id": fmt.Sprintf("%d", time.Now().Unix()),
})
return t.Client.Call(ctx, req, rsp)
}
// Implements client.Wrapper as logWrapper
func logWrap(c client.Client) client.Client {
return &logWrapper{c}
}
// Implements client.Wrapper as traceWrapper
func traceWrap(c client.Client) client.Client {
return &traceWrapper{c}
}
// Calls the example service
func call(i int) {
// Create new request to service go.micro.srv.example, method Example.Call
req := client.NewRequest("go.micro.srv.example", "Example.Call", &example.Request{
Name: "John",
})
// create context with metadata
ctx := c.WithMetadata(context.Background(), map[string]string{
"X-User-Id": "john",
"X-From-Id": "script",
})
rsp := &example.Response{}
// Call service
if err := client.Call(ctx, req, rsp); err != nil {
fmt.Println("call err: ", err, rsp)
return
}
}
func main() {
cmd.Init()
// Wrap the default client
client.DefaultClient = logWrap(client.DefaultClient)
call(0)
// Wrap using client.Wrap option
client.DefaultClient = client.NewClient(
client.Wrap(traceWrap),
client.Wrap(logWrap),
)
call(1)
}