Add basic go-micro web server with echo endpoint

Dockerfile

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+FROM alpine:3.2
+ADD listen /listen
+WORKDIR /
+ENTRYPOINT [ "/listen" ]

Makefile

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+
+GOPATH:=$(shell go env GOPATH)
+
+.PHONY: proto test docker
+
+
+build:
+	go build -o listen
+
+test:
+	go test -v ./... -cover
+
+docker:
+	docker build . -t listen-web:latest

README.md

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+# Listen Service
+
+This is the Listen service
+
+Generated with
+
+```
+micro new gitlab.com/nkprince007/listen --namespace=go.micro --type=web
+```
+
+## Getting Started
+
+- [Configuration](#configuration)
+- [Dependencies](#dependencies)
+- [Usage](#usage)
+
+## Configuration
+
+- FQDN: go.micro.web.listen
+- Type: web
+- Alias: listen
+
+## Dependencies
+
+Micro services depend on service discovery. The default is consul.
+
+```
+# install consul
+brew install consul
+
+# run consul
+consul agent -dev
+```
+
+## Usage
+
+A Makefile is included for convenience
+
+Build the binary
+
+```
+make build
+```
+
+Run the service
+```
+./listen-web
+```
+
+Build a docker image
+```
+make docker
+```

handler/handler.go

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+package handler
+
+import (
+	"encoding/json"
+	"net/http"
+	"time"
+)
+
+// Echo receives whatever was sent and posts it back
+func Echo(w http.ResponseWriter, r *http.Request) {
+	// decode the incoming request as json
+	var request map[string]interface{}
+	if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+
+	response := map[string]interface{}{
+		"payload":     request,
+		"processedAt": time.Now().Format(time.RFC1123),
+		"status":      "received",
+	}
+
+	// encode and write the response as json
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+}

main.go

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+package main
+
+import (
+	"github.com/micro/go-log"
+	"github.com/micro/go-web"
+	"gitlab.com/nkprince007/listen/handler"
+)
+
+func main() {
+	// create new web service
+	service := web.NewService(
+		web.Name("go.micro.web.listen"),
+		web.Version("latest"),
+	)
+
+	// register call handler
+	service.HandleFunc("/", handler.Echo)
+
+	// initialise service
+	if err := service.Init(); err != nil {
+		log.Fatal(err)
+	}
+
+	// run service
+	if err := service.Run(); err != nil {
+		log.Fatal(err)
+	}
+}