This a minimalistic step into microservices using HTTP/RPC and protobuf. It's the first implementation of a microservices "spec" called Micro.
An example server can be found in go-micro/template.
Consul is the default discovery mechanism provided in go-micro. Discovery is however pluggable.
https://www.consul.io/intro/getting-started/install.html
$ consul agent -server -bootstrap-expect 1 -data-dir /tmp/consul
$ go run go-micro/template/main.go
1416690099281057746 [Debug] Rpc handler /_rpc
1416690099281092588 [Debug] Starting server go.micro.service.template id go.micro.service.template-c0bfcb44-728a-11e4-b099-68a86d0d36b6
1416690099281192941 [Debug] Listening on [::]:58264
1416690099281215346 [Debug] Registering go.micro.service.template-c0bfcb44-728a-11e4-b099-68a86d0d36b6
$ go run go-micro/examples/service_client.go
go.micro.service.template-c0bfcb44-728a-11e4-b099-68a86d0d36b6: Hello John
go-micro/template/proto/example/example.proto:
package go.micro.service.template.example;
message Request {
required string name = 1;
}
message Response {
required string msg = 1;
}
Compile proto protoc -I$GOPATH/src --go_out=$GOPATH/src $GOPATH/src/github.com/asim/go-micro/template/proto/example/example.proto
go-micro/template/handler/example.go:
package handler
import (
"code.google.com/p/go.net/context"
"code.google.com/p/goprotobuf/proto"
"github.com/asim/go-micro/server"
example "github.com/asim/go-micro/template/proto/example"
log "github.com/golang/glog"
)
type Example struct{}
func (e *Example) Call(ctx context.Context, req *example.Request, rsp *example.Response) error {
log.Info("Received Example.Call request")
rsp.Msg = proto.String(server.Id + ": Hello " + req.GetName())
return nil
}go-micro/template/main.go:
package main
import (
"github.com/asim/go-micro/server"
"github.com/asim/go-micro/template/handler"
log "github.com/golang/glog"
)
func main() {
server.Name = "go.micro.service.template"
// Initialise Server
server.Init()
// Register Handlers
server.Register(
server.NewReceiver(
new(handler.Example),
),
)
// Run server
if err := server.Run(); err != nil {
log.Fatal(err)
}
}$ go run go-micro/template/main.go
1416690099281057746 [Debug] Rpc handler /_rpc
1416690099281092588 [Debug] Starting server go.micro.service.template id go.micro.service.template-c0bfcb44-728a-11e4-b099-68a86d0d36b6
1416690099281192941 [Debug] Listening on [::]:58264
1416690099281215346 [Debug] Registering go.micro.service.template-c0bfcb44-728a-11e4-b099-68a86d0d36b6