feat: basic cwmp implementation

backend/services/acs/cmd/acs/main.go

@@ -14,7 +14,7 @@ func main() {
 
 	natsActions := nats.StartNatsClient(c.Nats)
 
-	h := handler.NewHandler(natsActions.Publish, natsActions.Subscribe)
+	h := handler.NewHandler(natsActions.Publish, natsActions.Subscribe, c.Acs)
 
 	b := bridge.NewBridge(
 		natsActions.Publish,

backend/services/acs/internal/config/config.go

@@ -6,6 +6,7 @@ import (
 	"log"
 	"os"
 	"strconv"
+	"time"
 
 	"github.com/joho/godotenv"
 )
@@ -24,9 +25,11 @@ type Acs struct {
 	Tls               bool
 	TlsPort           bool
 	NoTls             bool
+	KeepAliveInterval time.Duration
 	Username          string
 	Password          string
 	Route             string
+	DebugMode         bool
 }
 
 type Config struct {
@@ -44,6 +47,8 @@ func NewConfig() *Config {
 	natsVerifyCertificates := flag.Bool("nats_verify_certificates", lookupEnvOrBool("NATS_VERIFY_CERTIFICATES", false), "verify validity of certificates from nats server")
 	acsPort := flag.String("acs_port", lookupEnvOrString("ACS_PORT", ":9292"), "port for acs server")
 	acsRoute := flag.String("acs_route", lookupEnvOrString("ACS_ROUTE", "/acs"), "route for acs server")
+	acsKeepAliveInterval := flag.Int("acs_keep_alive_interval", lookupEnvOrInt("KEEP_ALIVE_INTERVAL", 300), "keep alive interval in seconds for acs server")
+	cwmpDebugMode := flag.Bool("debug_mode", lookupEnvOrBool("CWMP_DEBUG", false), "enable or disable cwmp logs in debug mode")
 	flHelp := flag.Bool("help", false, "Help")
 
 	/*
@@ -72,6 +77,8 @@ func NewConfig() *Config {
 		Acs: Acs{
 			Port:              *acsPort,
 			Route:             *acsRoute,
+			KeepAliveInterval: time.Duration(*acsKeepAliveInterval),
+			DebugMode:         *cwmpDebugMode,
 		},
 	}
 }
@@ -99,6 +106,17 @@ func lookupEnvOrString(key string, defaultVal string) string {
 	return defaultVal
 }
 
+func lookupEnvOrInt(key string, defaultVal int) int {
+	if val, _ := os.LookupEnv(key); val != "" {
+		v, err := strconv.Atoi(val)
+		if err != nil {
+			log.Fatalf("LookupEnvOrInt[%s]: %v", key, err)
+		}
+		return v
+	}
+	return defaultVal
+}
+
 func lookupEnvOrBool(key string, defaultVal bool) bool {
 	if val, _ := os.LookupEnv(key); val != "" {
 		v, err := strconv.ParseBool(val)

backend/services/acs/internal/server/handler/cwmp.go

@@ -24,6 +24,10 @@ func (h *Handler) CwmpHandler(w http.ResponseWriter, r *http.Request) {
 	tmp, _ := ioutil.ReadAll(r.Body)
 	body := string(tmp)
 
+	if h.acsConfig.DebugMode {
+		log.Println("Received message: ", body)
+	}
+
 	var envelope cwmp.SoapEnvelope
 	xml.Unmarshal(tmp, &envelope)
 

backend/services/acs/internal/server/handler/handler.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"encoding/json"
+	"oktopUSP/backend/services/acs/internal/config"
 	"time"
 
 	"github.com/nats-io/nats.go"
@@ -56,6 +57,7 @@ type Handler struct {
 	pub       func(string, []byte) error
 	sub       func(string, func(*nats.Msg)) error
 	Cpes      map[string]CPE
+	acsConfig config.Acs
 }
 
 const (
@@ -64,10 +66,15 @@ const (
 	NATS_ADAPTER_SUBJECT_PREFIX      = "adapter.v1."
 )
 
-func NewHandler(pub func(string, []byte) error, sub func(string, func(*nats.Msg)) error) *Handler {
+func NewHandler(
+	pub func(string, []byte) error,
+	sub func(string, func(*nats.Msg)) error,
+	cAcs config.Acs,
+) *Handler {
 	return &Handler{
 		pub:       pub,
 		sub:       sub,
 		Cpes:      make(map[string]CPE),
+		acsConfig: cAcs,
 	}
 }

backend/services/acs/internal/server/handler/status.go

@@ -5,19 +5,13 @@ import (
 	"time"
 )
 
-// TODO: make these consts dynamic via config
-const (
-	CHECK_STATUS_INTERVAL = 10 * time.Second
-	KEEP_ALIVE_INTERVAL   = 600 * time.Second
-)
-
 func (h *Handler) handleCpeStatus(cpe string) {
 	for {
-		if time.Since(h.Cpes[cpe].LastConnection) > KEEP_ALIVE_INTERVAL {
+		if time.Since(h.Cpes[cpe].LastConnection) > h.acsConfig.KeepAliveInterval {
 			delete(h.Cpes, cpe)
 			break
 		}
-		time.Sleep(CHECK_STATUS_INTERVAL)
+		time.Sleep(h.acsConfig.KeepAliveInterval)
 	}
 	log.Println("CPE", cpe, "is offline")
 	h.pub("cwmp.v1."+cpe+".status", []byte("0"))