Move code to pkg
This commit is contained in:
Ludovic Fernandez
Traefiker Bot
parent
bd4c822670
commit
f1b085fa36
465 changed files with 656 additions and 680 deletions
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@ -1,272 +0,0 @@
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package server
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import (
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"context"
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"crypto/tls"
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"encoding/json"
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"net/http"
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"reflect"
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"time"
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"github.com/containous/alice"
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"github.com/containous/mux"
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"github.com/containous/traefik/config"
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"github.com/containous/traefik/log"
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"github.com/containous/traefik/middlewares/accesslog"
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"github.com/containous/traefik/middlewares/requestdecorator"
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"github.com/containous/traefik/middlewares/tracing"
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"github.com/containous/traefik/responsemodifiers"
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"github.com/containous/traefik/server/middleware"
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"github.com/containous/traefik/server/router"
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routertcp "github.com/containous/traefik/server/router/tcp"
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"github.com/containous/traefik/server/service"
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"github.com/containous/traefik/server/service/tcp"
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tcpCore "github.com/containous/traefik/tcp"
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"github.com/eapache/channels"
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"github.com/sirupsen/logrus"
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)
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// loadConfiguration manages dynamically routers, middlewares, servers and TLS configurations
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func (s *Server) loadConfiguration(configMsg config.Message) {
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currentConfigurations := s.currentConfigurations.Get().(config.Configurations)
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// Copy configurations to new map so we don't change current if LoadConfig fails
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newConfigurations := make(config.Configurations)
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for k, v := range currentConfigurations {
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newConfigurations[k] = v
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}
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newConfigurations[configMsg.ProviderName] = configMsg.Configuration
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s.metricsRegistry.ConfigReloadsCounter().Add(1)
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handlersTCP := s.loadConfigurationTCP(newConfigurations)
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for entryPointName, router := range handlersTCP {
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s.entryPointsTCP[entryPointName].switchRouter(router)
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}
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s.metricsRegistry.LastConfigReloadSuccessGauge().Set(float64(time.Now().Unix()))
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s.currentConfigurations.Set(newConfigurations)
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for _, listener := range s.configurationListeners {
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listener(*configMsg.Configuration)
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}
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s.postLoadConfiguration()
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}
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// loadConfigurationTCP returns a new gorilla.mux Route from the specified global configuration and the dynamic
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// provider configurations.
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func (s *Server) loadConfigurationTCP(configurations config.Configurations) map[string]*tcpCore.Router {
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ctx := context.TODO()
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var entryPoints []string
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for entryPointName := range s.entryPointsTCP {
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entryPoints = append(entryPoints, entryPointName)
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}
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conf := mergeConfiguration(configurations)
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s.tlsManager.UpdateConfigs(conf.TLSStores, conf.TLSOptions, conf.TLS)
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handlersNonTLS, handlersTLS := s.createHTTPHandlers(ctx, *conf.HTTP, entryPoints)
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routersTCP := s.createTCPRouters(ctx, conf.TCP, entryPoints, handlersNonTLS, handlersTLS, s.tlsManager.Get("default", "default"))
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return routersTCP
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}
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func (s *Server) createTCPRouters(ctx context.Context, configuration *config.TCPConfiguration, entryPoints []string, handlers map[string]http.Handler, handlersTLS map[string]http.Handler, tlsConfig *tls.Config) map[string]*tcpCore.Router {
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if configuration == nil {
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return make(map[string]*tcpCore.Router)
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}
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serviceManager := tcp.NewManager(configuration.Services)
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routerManager := routertcp.NewManager(configuration.Routers, serviceManager, handlers, handlersTLS, tlsConfig)
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return routerManager.BuildHandlers(ctx, entryPoints)
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}
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func (s *Server) createHTTPHandlers(ctx context.Context, configuration config.HTTPConfiguration, entryPoints []string) (map[string]http.Handler, map[string]http.Handler) {
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serviceManager := service.NewManager(configuration.Services, s.defaultRoundTripper)
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middlewaresBuilder := middleware.NewBuilder(configuration.Middlewares, serviceManager)
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responseModifierFactory := responsemodifiers.NewBuilder(configuration.Middlewares)
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routerManager := router.NewManager(configuration.Routers, serviceManager, middlewaresBuilder, responseModifierFactory)
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handlersNonTLS := routerManager.BuildHandlers(ctx, entryPoints, false)
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handlersTLS := routerManager.BuildHandlers(ctx, entryPoints, true)
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routerHandlers := make(map[string]http.Handler)
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for _, entryPointName := range entryPoints {
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internalMuxRouter := mux.NewRouter().
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SkipClean(true)
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ctx = log.With(ctx, log.Str(log.EntryPointName, entryPointName))
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factory := s.entryPointsTCP[entryPointName].RouteAppenderFactory
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if factory != nil {
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// FIXME remove currentConfigurations
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appender := factory.NewAppender(ctx, middlewaresBuilder, &s.currentConfigurations)
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appender.Append(internalMuxRouter)
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}
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if h, ok := handlersNonTLS[entryPointName]; ok {
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internalMuxRouter.NotFoundHandler = h
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} else {
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internalMuxRouter.NotFoundHandler = buildDefaultHTTPRouter()
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}
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routerHandlers[entryPointName] = internalMuxRouter
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chain := alice.New()
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if s.accessLoggerMiddleware != nil {
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chain = chain.Append(accesslog.WrapHandler(s.accessLoggerMiddleware))
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}
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if s.tracer != nil {
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chain = chain.Append(tracing.WrapEntryPointHandler(ctx, s.tracer, entryPointName))
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}
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chain = chain.Append(requestdecorator.WrapHandler(s.requestDecorator))
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handler, err := chain.Then(internalMuxRouter.NotFoundHandler)
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if err != nil {
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log.FromContext(ctx).Error(err)
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continue
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}
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internalMuxRouter.NotFoundHandler = handler
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handlerTLS, ok := handlersTLS[entryPointName]
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if ok {
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handlerTLSWithMiddlewares, err := chain.Then(handlerTLS)
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if err != nil {
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log.FromContext(ctx).Error(err)
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continue
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}
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handlersTLS[entryPointName] = handlerTLSWithMiddlewares
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}
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}
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return routerHandlers, handlersTLS
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}
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func isEmptyConfiguration(conf *config.Configuration) bool {
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if conf == nil {
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return true
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}
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if conf.TCP == nil {
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conf.TCP = &config.TCPConfiguration{}
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}
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if conf.HTTP == nil {
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conf.HTTP = &config.HTTPConfiguration{}
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}
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return conf.HTTP.Routers == nil &&
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conf.HTTP.Services == nil &&
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conf.HTTP.Middlewares == nil &&
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conf.TLS == nil &&
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conf.TCP.Routers == nil &&
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conf.TCP.Services == nil
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}
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func (s *Server) preLoadConfiguration(configMsg config.Message) {
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s.defaultConfigurationValues(configMsg.Configuration.HTTP)
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currentConfigurations := s.currentConfigurations.Get().(config.Configurations)
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logger := log.WithoutContext().WithField(log.ProviderName, configMsg.ProviderName)
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if log.GetLevel() == logrus.DebugLevel {
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jsonConf, _ := json.Marshal(configMsg.Configuration)
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logger.Debugf("Configuration received from provider %s: %s", configMsg.ProviderName, string(jsonConf))
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}
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if isEmptyConfiguration(configMsg.Configuration) {
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logger.Infof("Skipping empty Configuration for provider %s", configMsg.ProviderName)
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return
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}
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if reflect.DeepEqual(currentConfigurations[configMsg.ProviderName], configMsg.Configuration) {
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logger.Infof("Skipping same configuration for provider %s", configMsg.ProviderName)
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return
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}
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providerConfigUpdateCh, ok := s.providerConfigUpdateMap[configMsg.ProviderName]
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if !ok {
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providerConfigUpdateCh = make(chan config.Message)
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s.providerConfigUpdateMap[configMsg.ProviderName] = providerConfigUpdateCh
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s.routinesPool.Go(func(stop chan bool) {
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s.throttleProviderConfigReload(s.providersThrottleDuration, s.configurationValidatedChan, providerConfigUpdateCh, stop)
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})
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}
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providerConfigUpdateCh <- configMsg
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}
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func (s *Server) defaultConfigurationValues(configuration *config.HTTPConfiguration) {
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// FIXME create a config hook
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}
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func (s *Server) listenConfigurations(stop chan bool) {
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for {
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select {
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case <-stop:
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return
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case configMsg, ok := <-s.configurationValidatedChan:
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if !ok || configMsg.Configuration == nil {
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return
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}
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s.loadConfiguration(configMsg)
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}
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}
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}
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// throttleProviderConfigReload throttles the configuration reload speed for a single provider.
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// It will immediately publish a new configuration and then only publish the next configuration after the throttle duration.
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// Note that in the case it receives N new configs in the timeframe of the throttle duration after publishing,
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// it will publish the last of the newly received configurations.
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func (s *Server) throttleProviderConfigReload(throttle time.Duration, publish chan<- config.Message, in <-chan config.Message, stop chan bool) {
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ring := channels.NewRingChannel(1)
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defer ring.Close()
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s.routinesPool.Go(func(stop chan bool) {
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for {
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select {
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case <-stop:
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return
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case nextConfig := <-ring.Out():
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if config, ok := nextConfig.(config.Message); ok {
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publish <- config
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time.Sleep(throttle)
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}
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}
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}
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})
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for {
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select {
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case <-stop:
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return
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case nextConfig := <-in:
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ring.In() <- nextConfig
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}
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}
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}
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func (s *Server) postLoadConfiguration() {
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// FIXME metrics
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// if s.metricsRegistry.IsEnabled() {
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// activeConfig := s.currentConfigurations.Get().(config.Configurations)
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// metrics.OnConfigurationUpdate(activeConfig)
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// }
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}
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func buildDefaultHTTPRouter() *mux.Router {
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rt := mux.NewRouter()
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rt.NotFoundHandler = http.HandlerFunc(http.NotFound)
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rt.SkipClean(true)
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return rt
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}
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