/
server_3002.go
84 lines (71 loc) · 1.96 KB
/
server_3002.go
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package main
import (
"fmt"
"net/http"
"encoding/json"
"github.com/julienschmidt/httprouter"
)
var keyValStore map[string]string
type getResponse struct {
Key string `json:"key"`
Value string `json:"value"`
}
type error struct {
Error_message string `json:"error_message"`
}
func getKey(rw http.ResponseWriter, req *http.Request, p httprouter.Params) {
var response []byte
key_id := p.ByName("key_id")
if value,found := keyValStore[key_id]; found {
jsonResponse := &getResponse{
key_id,
value,
}
resp,_ := json.Marshal(jsonResponse)
response = resp
rw.WriteHeader(200)
}else {
jsonResponse := &error{
"Key does not found in the cache",
}
resp,_ := json.Marshal(jsonResponse)
response = resp
rw.WriteHeader(404)
}
// Write content-type, statuscode, payload
rw.Header().Set("Content-Type", "application/json")
rw.WriteHeader(200)
fmt.Fprintf(rw, "%s", response)
}
func getKeys(rw http.ResponseWriter, req *http.Request, p httprouter.Params) {
var output[] getResponse
for key,val := range keyValStore{
jsonResponse := getResponse{
Key :key,
Value:val,
}
output = append(output, jsonResponse)
}
resp,_ := json.Marshal(output)
rw.Header().Set("Content-Type", "application/json")
rw.WriteHeader(200)
fmt.Fprintf(rw, "%s", resp)
}
func putKey(rw http.ResponseWriter, req *http.Request, p httprouter.Params) {
key_id := p.ByName("key_id")
value := p.ByName("value")
keyValStore[key_id] = value
rw.WriteHeader(200)
}
func main() {
mux := httprouter.New()
keyValStore = make(map[string]string)
mux.GET("/keys/:key_id", getKey)
mux.GET("/keys", getKeys)
mux.PUT("/keys/:key_id/:value", putKey)
server := http.Server{
Addr:"0.0.0.0:3002",
Handler: mux,
}
server.ListenAndServe()
}