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server.go
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server.go
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package main
import (
"crypto/tls"
"encoding/json"
"log"
"net/http"
"github.com/go-chi/chi/v5"
"github.com/radius-project/radius/test/magpiego/bindings"
)
var server *http.Server
const (
backendURI = "/backend"
healthURI = "/healthz"
port = "3000"
)
var Providers = map[string]bindings.BindingProvider{
"DAPRPUBSUB": bindings.DaprPubSubBinding,
"KEYVAULT": bindings.KeyVaultBinding,
"MONGODB": bindings.MongoBinding,
"SERVICEBUS": bindings.ServiceBusBinding,
"SQL": bindings.MicrosoftSqlBinding,
"REDIS": bindings.RedisBinding,
"DAPRSTATESTORE": bindings.DaprStateStoreBinding,
"RABBITMQ": bindings.RabbitMQBinding,
"DAPRSECRETSTORE": bindings.DaprSecretStoreBinding,
"DAPRHTTP": bindings.DaprHttpBinding,
"STORAGE": bindings.StorageBinding,
}
func startHTTPServer() error {
mux := setupServeMux()
server = &http.Server{
Addr: ":" + port,
Handler: mux,
}
err := server.ListenAndServe()
if err != nil {
log.Println("Error starting magpie server")
return err
}
return nil
}
func startHTTPSServer(crt []byte, key []byte) error {
mux := setupServeMux()
cert, err := tls.X509KeyPair(crt, key)
if err != nil {
log.Println("Error parsing the key pair")
return err
}
tlsConfig := &tls.Config{
Certificates: []tls.Certificate{cert},
}
server := &http.Server{
TLSConfig: tlsConfig,
Addr: ":" + port,
Handler: mux,
}
err = server.ListenAndServeTLS("", "")
if err != nil {
log.Println("Error starting magpie server")
return err
}
return nil
}
func setupServeMux() chi.Router {
router := chi.NewRouter()
router.Get(backendURI, backendHandler)
router.Get(healthURI, statusHandler)
return router
}
func statusHandler(res http.ResponseWriter, req *http.Request) {
log.Println("Starting Status Check...")
if req.Method != http.MethodGet {
log.Print("Method not supported")
writeResponse(res, http.StatusMethodNotAllowed, nil)
res.Header().Set("Allow", http.MethodGet)
return
}
var b []byte
var err error
bdings := bindings.LoadBindings(Providers)
healthy := true
if bdings != nil {
var bindingStatuses []bindings.BindingStatus
for _, binding := range bdings {
bindingStatus := binding.BindingProviders(binding.EnvVars)
bindingStatuses = append(bindingStatuses, bindingStatus)
if !bindingStatus.Ok {
healthy = false
}
}
b, err = json.Marshal(bindingStatuses)
if err != nil {
log.Println("error marshaling status to json - ", err)
writeResponse(res, 500, []byte("error marshaling status to json"))
return
}
}
if healthy {
log.Println("The readiness check passed")
writeResponse(res, 200, b)
} else {
log.Println("The readiness check failed")
writeResponse(res, 500, b)
}
}
func backendHandler(res http.ResponseWriter, req *http.Request) {
log.Printf("backend call responded with %d for request - %+v", http.StatusOK, req)
writeResponse(res, 200, []byte("backend call response"))
}
func writeResponse(res http.ResponseWriter, status int, b []byte) {
res.WriteHeader(status)
res.Header().Set("Content-Type", "application/json")
size, err := res.Write(b)
if err != nil {
log.Println("Error writing response of size - ", size, " err - ", err.Error())
}
}