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server.go
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server.go
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package main
import (
"crypto/hmac"
"crypto/sha1"
"encoding/hex"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net/http"
)
func SetupServer() {
log.Println("Setting up server")
mux := http.NewServeMux()
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
})
mux.HandleFunc("/healthcheck", func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/text")
w.Write([]byte("OK"))
log.Println("healthcheck")
})
mux.HandleFunc("/webhook", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/text")
if r.Method != "POST" {
w.WriteHeader(http.StatusMethodNotAllowed)
return
}
var expoContext ExpoBuild
body, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Fatalln(err)
}
digest := hmac.New(sha1.New, []byte(EXPO_HMAC_SECRET))
digest.Write(body)
receivedSignature := r.Header.Get("expo-signature")
log.Printf("Received signature: %v\n", receivedSignature)
expectedSignature := fmt.Sprintf("sha1=%v", hex.EncodeToString(digest.Sum(nil)))
if expectedSignature != receivedSignature {
log.Printf("Invalid HMAC, received %v, expected %v\n", receivedSignature, expectedSignature)
w.WriteHeader(http.StatusUnauthorized)
return
}
json.Unmarshal(body, &expoContext)
if expoContext.Status == "finished" {
log.Println("Received build")
err := Webhook(expoContext)
if err != nil {
log.Printf("An error occured: %v\n", err)
w.WriteHeader(http.StatusConflict)
} else {
log.Println("Expo build published on Confluence")
w.WriteHeader(http.StatusOK)
}
} else {
log.Println("Received unfinished build")
w.WriteHeader(http.StatusOK)
}
})
mux.HandleFunc("/inject", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/text")
if r.Method != "POST" {
w.WriteHeader(http.StatusMethodNotAllowed)
return
}
log.Println("Injecting a build manually")
var build Build
body, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Fatalln(err)
}
json.Unmarshal(body, build)
err = PushBuild(build)
if err != nil {
log.Printf("An error occured %v\n", err)
w.WriteHeader(http.StatusForbidden)
} else {
w.WriteHeader(http.StatusOK)
}
})
mux.HandleFunc("/init", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/text")
if r.Method != "POST" {
w.WriteHeader(http.StatusMethodNotAllowed)
return
}
err := Init()
if err != nil {
log.Printf("An error occured %v\n", err)
w.WriteHeader(http.StatusForbidden)
} else {
w.WriteHeader(http.StatusOK)
}
})
log.Println("Starting server...")
// Determine port for HTTP service.
port := PORT
log.Printf("Using port %v\n", port)
if port == 0 {
port = 8080
log.Printf("Defaulting to port %v\n", port)
}
server := &http.Server{
Addr: fmt.Sprintf(%v, port),
Handler: mux,
}
server.SetKeepAlivesEnabled(false)
err := server.ListenAndServe()
if err != nil {
log.Fatal(err)
}
log.Printf("Server listening on localhost:%v\n", port)
}