TUN-5749: Refactor cloudflared to pave way for reconfigurable ingress

- Split origin into supervisor and proxy packages
- Create configManager to handle dynamic config

supervisor/configmanager.go

@@ -0,0 +1,55 @@
+package supervisor
+
+import (
+	"sync"
+
+	"github.com/rs/zerolog"
+
+	"github.com/cloudflare/cloudflared/connection"
+	"github.com/cloudflare/cloudflared/ingress"
+	"github.com/cloudflare/cloudflared/proxy"
+	tunnelpogs "github.com/cloudflare/cloudflared/tunnelrpc/pogs"
+)
+
+type configManager struct {
+	currentVersion int32
+	// Only used by UpdateConfig
+	updateLock sync.Mutex
+	// TODO: TUN-5698: Make proxy atomic.Value
+	proxy  *proxy.Proxy
+	config *DynamicConfig
+	tags   []tunnelpogs.Tag
+	log    *zerolog.Logger
+}
+
+func newConfigManager(config *DynamicConfig, tags []tunnelpogs.Tag, log *zerolog.Logger) *configManager {
+	var warpRoutingService *ingress.WarpRoutingService
+	if config.WarpRoutingEnabled {
+		warpRoutingService = ingress.NewWarpRoutingService()
+		log.Info().Msgf("Warp-routing is enabled")
+	}
+
+	return &configManager{
+		// Lowest possible version, any remote configuration will have version higher than this
+		currentVersion: 0,
+		proxy:          proxy.NewOriginProxy(config.Ingress, warpRoutingService, tags, log),
+		config:         config,
+		log:            log,
+	}
+}
+
+func (cm *configManager) Update(version int32, config []byte) *tunnelpogs.UpdateConfigurationResponse {
+	// TODO: TUN-5698: make ingress configurable
+	return &tunnelpogs.UpdateConfigurationResponse{
+		LastAppliedVersion: cm.currentVersion,
+	}
+}
+
+func (cm *configManager) GetOriginProxy() connection.OriginProxy {
+	return cm.proxy
+}
+
+type DynamicConfig struct {
+	Ingress            *ingress.Ingress
+	WarpRoutingEnabled bool
+}