examples/guestbook-go/src/main.go

105 lines
2.3 KiB
Go

package main
import (
"encoding/json"
"net/http"
"os"
"strings"
"github.com/codegangsta/negroni"
"github.com/gorilla/mux"
"github.com/xyproto/simpleredis"
)
var pool *simpleredis.ConnectionPool
func ListRangeHandler(rw http.ResponseWriter, req *http.Request) {
members, err := simpleredis.NewList(pool, mux.Vars(req)["key"]).GetAll()
if err != nil {
panic(err)
}
membersJSON, err := json.MarshalIndent(members, "", " ")
if err != nil {
panic(err)
}
rw.WriteHeader(200)
rw.Header().Set("Content-Type", "application/json")
rw.Write([]byte(membersJSON))
}
func ListPushHandler(rw http.ResponseWriter, req *http.Request) {
set := simpleredis.NewList(pool, mux.Vars(req)["key"])
err := set.Add(mux.Vars(req)["value"])
if err != nil {
panic(err)
}
members, err := set.GetAll()
if err != nil {
panic(err)
}
membersJSON, err := json.MarshalIndent(members, "", " ")
if err != nil {
panic(err)
}
rw.WriteHeader(200)
rw.Header().Set("Content-Type", "application/json")
rw.Write([]byte(membersJSON))
}
func InfoHandler(rw http.ResponseWriter, req *http.Request) {
info, err := pool.Get(0).Do("INFO")
if err != nil {
panic(err)
}
infoString := string(info.([]uint8))
rw.WriteHeader(200)
rw.Write([]byte(infoString))
}
func EnvHandler(rw http.ResponseWriter, req *http.Request) {
getenvironment := func(data []string, getkeyval func(item string) (key, val string)) map[string]string {
items := make(map[string]string)
for _, item := range data {
key, val := getkeyval(item)
items[key] = val
}
return items
}
environment := getenvironment(os.Environ(), func(item string) (key, val string) {
splits := strings.Split(item, "=")
key = splits[0]
val = strings.Join(splits[1:], "=")
return
})
envJSON, err := json.MarshalIndent(environment, "", " ")
if err != nil {
panic(err)
}
rw.WriteHeader(200)
rw.Write([]byte(envJSON))
}
func main() {
pool = simpleredis.NewConnectionPoolHost(os.Getenv("SERVICE_HOST") + ":" + os.Getenv("REDIS_MASTER_SERVICE_SERVICE_PORT"))
defer pool.Close()
r := mux.NewRouter()
r.Path("/lrange/{key}").Methods("GET").HandlerFunc(ListRangeHandler)
r.Path("/rpush/{key}/{value}").Methods("GET").HandlerFunc(ListPushHandler)
r.Path("/info").Methods("GET").HandlerFunc(InfoHandler)
r.Path("/env").Methods("GET").HandlerFunc(EnvHandler)
n := negroni.Classic()
n.UseHandler(r)
n.Run(":3000")
}