package api import ( "encoding/json" "net/http" "reflect" "github.com/traefik/traefik/v2/pkg/config/runtime" "github.com/traefik/traefik/v2/pkg/config/static" "github.com/traefik/traefik/v2/pkg/log" ) type schemeOverview struct { Routers *section `json:"routers,omitempty"` Services *section `json:"services,omitempty"` Middlewares *section `json:"middlewares,omitempty"` } type section struct { Total int `json:"total"` Warnings int `json:"warnings"` Errors int `json:"errors"` } type features struct { Tracing string `json:"tracing"` Metrics string `json:"metrics"` AccessLog bool `json:"accessLog"` Hub bool `json:"hub"` // TODO add certificates resolvers } type overview struct { HTTP schemeOverview `json:"http"` TCP schemeOverview `json:"tcp"` UDP schemeOverview `json:"udp"` Features features `json:"features,omitempty"` Providers []string `json:"providers,omitempty"` } func (h Handler) getOverview(rw http.ResponseWriter, request *http.Request) { result := overview{ HTTP: schemeOverview{ Routers: getHTTPRouterSection(h.runtimeConfiguration.Routers), Services: getHTTPServiceSection(h.runtimeConfiguration.Services), Middlewares: getHTTPMiddlewareSection(h.runtimeConfiguration.Middlewares), }, TCP: schemeOverview{ Routers: getTCPRouterSection(h.runtimeConfiguration.TCPRouters), Services: getTCPServiceSection(h.runtimeConfiguration.TCPServices), Middlewares: getTCPMiddlewareSection(h.runtimeConfiguration.TCPMiddlewares), }, UDP: schemeOverview{ Routers: getUDPRouterSection(h.runtimeConfiguration.UDPRouters), Services: getUDPServiceSection(h.runtimeConfiguration.UDPServices), }, Features: getFeatures(h.staticConfig), Providers: getProviders(h.staticConfig), } rw.Header().Set("Content-Type", "application/json") err := json.NewEncoder(rw).Encode(result) if err != nil { log.FromContext(request.Context()).Error(err) writeError(rw, err.Error(), http.StatusInternalServerError) } } func getHTTPRouterSection(routers map[string]*runtime.RouterInfo) *section { var countErrors int var countWarnings int for _, rt := range routers { switch rt.Status { case runtime.StatusDisabled: countErrors++ case runtime.StatusWarning: countWarnings++ } } return §ion{ Total: len(routers), Warnings: countWarnings, Errors: countErrors, } } func getHTTPServiceSection(services map[string]*runtime.ServiceInfo) *section { var countErrors int var countWarnings int for _, svc := range services { switch svc.Status { case runtime.StatusDisabled: countErrors++ case runtime.StatusWarning: countWarnings++ } } return §ion{ Total: len(services), Warnings: countWarnings, Errors: countErrors, } } func getHTTPMiddlewareSection(middlewares map[string]*runtime.MiddlewareInfo) *section { var countErrors int var countWarnings int for _, mid := range middlewares { switch mid.Status { case runtime.StatusDisabled: countErrors++ case runtime.StatusWarning: countWarnings++ } } return §ion{ Total: len(middlewares), Warnings: countWarnings, Errors: countErrors, } } func getTCPRouterSection(routers map[string]*runtime.TCPRouterInfo) *section { var countErrors int var countWarnings int for _, rt := range routers { switch rt.Status { case runtime.StatusDisabled: countErrors++ case runtime.StatusWarning: countWarnings++ } } return §ion{ Total: len(routers), Warnings: countWarnings, Errors: countErrors, } } func getTCPServiceSection(services map[string]*runtime.TCPServiceInfo) *section { var countErrors int var countWarnings int for _, svc := range services { switch svc.Status { case runtime.StatusDisabled: countErrors++ case runtime.StatusWarning: countWarnings++ } } return §ion{ Total: len(services), Warnings: countWarnings, Errors: countErrors, } } func getTCPMiddlewareSection(middlewares map[string]*runtime.TCPMiddlewareInfo) *section { var countErrors int var countWarnings int for _, mid := range middlewares { switch mid.Status { case runtime.StatusDisabled: countErrors++ case runtime.StatusWarning: countWarnings++ } } return §ion{ Total: len(middlewares), Warnings: countWarnings, Errors: countErrors, } } func getUDPRouterSection(routers map[string]*runtime.UDPRouterInfo) *section { var countErrors int var countWarnings int for _, rt := range routers { switch rt.Status { case runtime.StatusDisabled: countErrors++ case runtime.StatusWarning: countWarnings++ } } return §ion{ Total: len(routers), Warnings: countWarnings, Errors: countErrors, } } func getUDPServiceSection(services map[string]*runtime.UDPServiceInfo) *section { var countErrors int var countWarnings int for _, svc := range services { switch svc.Status { case runtime.StatusDisabled: countErrors++ case runtime.StatusWarning: countWarnings++ } } return §ion{ Total: len(services), Warnings: countWarnings, Errors: countErrors, } } func getProviders(conf static.Configuration) []string { if conf.Providers == nil { return nil } var providers []string v := reflect.ValueOf(conf.Providers).Elem() for i := 0; i < v.NumField(); i++ { field := v.Field(i) if field.Kind() == reflect.Ptr && field.Elem().Kind() == reflect.Struct { if !field.IsNil() { providers = append(providers, v.Type().Field(i).Name) } } else if field.Kind() == reflect.Map && field.Type().Elem() == reflect.TypeOf(static.PluginConf{}) { for _, value := range field.MapKeys() { providers = append(providers, "plugin-"+value.String()) } } } return providers } func getFeatures(conf static.Configuration) features { return features{ Tracing: getTracing(conf), Metrics: getMetrics(conf), AccessLog: conf.AccessLog != nil, Hub: conf.Hub != nil, } } func getMetrics(conf static.Configuration) string { if conf.Metrics == nil { return "" } v := reflect.ValueOf(conf.Metrics).Elem() for i := 0; i < v.NumField(); i++ { field := v.Field(i) if field.Kind() == reflect.Ptr && field.Elem().Kind() == reflect.Struct { if !field.IsNil() { return v.Type().Field(i).Name } } } return "" } func getTracing(conf static.Configuration) string { if conf.Tracing == nil { return "" } v := reflect.ValueOf(conf.Tracing).Elem() for i := 0; i < v.NumField(); i++ { field := v.Field(i) if field.Kind() == reflect.Ptr && field.Elem().Kind() == reflect.Struct { if !field.IsNil() { return v.Type().Field(i).Name } } } return "" }