package udp import ( "context" "errors" "sort" "github.com/traefik/traefik/v2/pkg/config/runtime" "github.com/traefik/traefik/v2/pkg/log" "github.com/traefik/traefik/v2/pkg/server/provider" udpservice "github.com/traefik/traefik/v2/pkg/server/service/udp" "github.com/traefik/traefik/v2/pkg/udp" ) // NewManager Creates a new Manager. func NewManager(conf *runtime.Configuration, serviceManager *udpservice.Manager, ) *Manager { return &Manager{ serviceManager: serviceManager, conf: conf, } } // Manager is a route/router manager. type Manager struct { serviceManager *udpservice.Manager conf *runtime.Configuration } func (m *Manager) getUDPRouters(ctx context.Context, entryPoints []string) map[string]map[string]*runtime.UDPRouterInfo { if m.conf != nil { return m.conf.GetUDPRoutersByEntryPoints(ctx, entryPoints) } return make(map[string]map[string]*runtime.UDPRouterInfo) } // BuildHandlers builds the handlers for the given entrypoints. func (m *Manager) BuildHandlers(rootCtx context.Context, entryPoints []string) map[string]udp.Handler { entryPointsRouters := m.getUDPRouters(rootCtx, entryPoints) entryPointHandlers := make(map[string]udp.Handler) for _, entryPointName := range entryPoints { routers := entryPointsRouters[entryPointName] ctx := log.With(rootCtx, log.Str(log.EntryPointName, entryPointName)) if len(routers) > 1 { log.FromContext(ctx).Warn("Config has more than one udp router for a given entrypoint.") } handlers := m.buildEntryPointHandlers(ctx, routers) if len(handlers) > 0 { // As UDP support only one router per entrypoint, we only take the first one. entryPointHandlers[entryPointName] = handlers[0] } } return entryPointHandlers } func (m *Manager) buildEntryPointHandlers(ctx context.Context, configs map[string]*runtime.UDPRouterInfo) []udp.Handler { var rtNames []string for routerName := range configs { rtNames = append(rtNames, routerName) } sort.Slice(rtNames, func(i, j int) bool { return rtNames[i] > rtNames[j] }) var handlers []udp.Handler for _, routerName := range rtNames { routerConfig := configs[routerName] ctxRouter := log.With(provider.AddInContext(ctx, routerName), log.Str(log.RouterName, routerName)) logger := log.FromContext(ctxRouter) if routerConfig.Service == "" { err := errors.New("the service is missing on the udp router") routerConfig.AddError(err, true) logger.Error(err) continue } handler, err := m.serviceManager.BuildUDP(ctxRouter, routerConfig.Service) if err != nil { routerConfig.AddError(err, true) logger.Error(err) continue } handlers = append(handlers, handler) } return handlers }