Refactor some configuration to proxy_opts

mtglib/proxy_opts.go

@@ -17,3 +17,68 @@ type ProxyOpts struct {
 	IdleTimeout        time.Duration
 	PreferIP           string
 }
+
+func (p ProxyOpts) valid() error {
+	switch {
+	case p.Network == nil:
+		return ErrNetworkIsNotDefined
+	case p.AntiReplayCache == nil:
+		return ErrAntiReplayCacheIsNotDefined
+	case p.IPBlocklist == nil:
+		return ErrIPBlocklistIsNotDefined
+	case p.EventStream == nil:
+		return ErrEventStreamIsNotDefined
+	case p.TimeAttackDetector == nil:
+		return ErrTimeAttackDetectorIsNotDefined
+	case p.Logger == nil:
+		return ErrLoggerIsNotDefined
+	case !p.Secret.Valid():
+		return ErrSecretInvalid
+	}
+
+	return nil
+}
+
+func (p ProxyOpts) getBufferSize() int {
+	if p.BufferSize < 1 {
+		return DefaultBufferSize
+	}
+
+	return int(p.BufferSize)
+}
+
+func (p ProxyOpts) getConcurrency() int {
+	if p.Concurrency == 0 {
+		return DefaultConcurrency
+	}
+
+	return int(p.Concurrency)
+}
+
+func (p ProxyOpts) getDomainFrontingPort() int {
+	if p.DomainFrontingPort == 0 {
+		return DefaultDomainFrontingPort
+	}
+
+	return int(p.DomainFrontingPort)
+}
+
+func (p ProxyOpts) getIdleTimeout() time.Duration {
+	if p.IdleTimeout == 0 {
+		return DefaultIdleTimeout
+	}
+
+	return p.IdleTimeout
+}
+
+func (p ProxyOpts) getPreferIP() string {
+	if p.PreferIP == "" {
+		return DefaultPreferIP
+	}
+
+	return p.PreferIP
+}
+
+func (p ProxyOpts) getLogger(name string) Logger {
+	return p.Logger.Named(name)
+}