fixed startup crash for file provider

src/common/constants.go

@@ -37,12 +37,6 @@ const (
 
 const DockerHostFromEnv = "$DOCKER_HOST"
 
-const (
-	ProxyHTTPPort  = ":80"
-	ProxyHTTPSPort = ":443"
-	APIHTTPPort    = ":8888"
-)
-
 var WellKnownHTTPPorts = map[uint16]bool{
 	80:   true,
 	8000: true,

src/common/env.go

@@ -6,9 +6,22 @@ import (
 	U "github.com/yusing/go-proxy/utils"
 )
 
-var NoSchemaValidation = getEnvBool("GOPROXY_NO_SCHEMA_VALIDATION")
-var IsDebug = getEnvBool("GOPROXY_DEBUG")
+var (
+	NoSchemaValidation = getEnvBool("GOPROXY_NO_SCHEMA_VALIDATION")
+	IsDebug            = getEnvBool("GOPROXY_DEBUG")
+	ProxyHTTPPort      = ":" + getEnv("GOPROXY_HTTP_PORT", "80")
+	ProxyHTTPSPort     = ":" + getEnv("GOPROXY_HTTPS_PORT", "443")
+	APIHTTPPort        = ":" + getEnv("GOPROXY_API_PORT", "8888")
+)
 
 func getEnvBool(key string) bool {
 	return U.ParseBool(os.Getenv(key))
 }
+
+func getEnv(key string, defaultValue string) string {
+	value, ok := os.LookupEnv(key)
+	if !ok {
+		value = defaultValue
+	}
+	return value
+}

src/main.go

@@ -23,7 +23,6 @@ import (
 	R "github.com/yusing/go-proxy/route"
 	"github.com/yusing/go-proxy/server"
 	F "github.com/yusing/go-proxy/utils/functional"
-	W "github.com/yusing/go-proxy/watcher"
 )
 
 func main() {
@@ -92,7 +91,6 @@ func main() {
 		l.Warn(err)
 	}
 
-	W.InitFileWatcherHelper()
 	cfg.WatchChanges()
 
 	onShutdown.Add(docker.CloseAllClients)

src/models/proxy_entry.go

@@ -30,6 +30,10 @@ type (
 var NewProxyEntries = F.NewMapOf[string, *ProxyEntry]
 
 func (e *ProxyEntry) SetDefaults() {
+	if e.ProxyProperties == nil {
+		e.ProxyProperties = &D.ProxyProperties{}
+	}
+
 	if e.Scheme == "" {
 		switch {
 		case strings.ContainsRune(e.Port, ':'):

src/watcher/file_watcher.go

@@ -20,11 +20,10 @@ func NewFileWatcher(filename string) Watcher {
 }
 
 func (f *fileWatcher) Events(ctx context.Context) (<-chan Event, <-chan E.NestedError) {
+	if fwHelper == nil {
+		fwHelper = newFileWatcherHelper(common.ConfigBasePath)
+	}
 	return fwHelper.Add(ctx, f)
 }
 
-func InitFileWatcherHelper() {
-	fwHelper = newFileWatcherHelper(common.ConfigBasePath)
-}
-
 var fwHelper *fileWatcherHelper