package main import ( "fmt" "log" "net/http" "time" "github.com/gorilla/handlers" "github.com/gorilla/mux" ) func main() { initGetwtxt() // StrictSlash(true) allows /api and /api/ // to serve the same content without duplicating // handlers/paths index := mux.NewRouter().StrictSlash(true) api := index.PathPrefix("/api").Subrouter() // Begin the path -> handler mapping index.Path("/"). Methods("GET"). HandlerFunc(indexHandler) index.Path("/css"). Methods("GET"). HandlerFunc(cssHandler) index.Path("/api"). Methods("GET"). HandlerFunc(apiBaseHandler) // twtxt will add support for other formats later. // Maybe json? Making this future-proof. api.Path("/{format:(?:plain)}"). Methods("GET"). HandlerFunc(apiFormatHandler) // Specifying the endpoint with and without query information. // Will return 404 on empty queries otherwise. api.Path("/{format:(?:plain)}/{endpoint:(?:mentions|users|tweets)}"). Methods("GET"). HandlerFunc(apiEndpointHandler) // Using stdlib net/url to validate the input URLs rather than regex. // Validating a URL with regex is unwieldly api.Path("/{format:(?:plain)}/{endpoint:(?:mentions|users|tweets)}"). Queries("url", "{url}", "q", "{query}"). Methods("GET"). HandlerFunc(apiEndpointHandler) // This is for submitting new users. Both query variables must exist // in the request for this to match. api.Path("/{format:(?:plain)}/{endpoint:users}"). Queries("url", "{url}", "nickname", "{nickname:[a-zA-Z0-9_-]+}"). Methods("POST"). HandlerFunc(apiEndpointPOSTHandler) // This is for submitting new users incorrectly // and letting the requester know about their error. api.Path("/{format:(?:plain)}/{endpoint:users}"). Queries("url", "{url}"). Methods("POST"). HandlerFunc(apiEndpointPOSTHandler) // This is for submitting new users incorrectly // and letting the requester know about their error. api.Path("/{format:(?:plain)}/{endpoint:users}"). Queries("nickname", "{nickname:[a-zA-Z0-9_-]+}"). Methods("POST"). HandlerFunc(apiEndpointPOSTHandler) // Show all observed tags api.Path("/{format:(?:plain)}/tags"). Methods("GET"). HandlerFunc(apiTagsBaseHandler) // Requests tweets with a specific tag api.Path("/{format:(?:plain)}/tags/{tags:[a-zA-Z0-9_-]+}"). Methods("GET"). HandlerFunc(apiTagsHandler) // format the port for the http.Server object confObj.mu.RLock() portnum := fmt.Sprintf(":%v", confObj.port) confObj.mu.RUnlock() // defines options for the http server. // handlers.CompressHandler gzips all responses. // Write/Read timeouts are self explanatory. server := &http.Server{ Handler: handlers.CompressHandler(ipMiddleware(index)), Addr: portnum, WriteTimeout: 15 * time.Second, ReadTimeout: 15 * time.Second, } log.Printf("Listening on %v\n", portnum) err := server.ListenAndServe() if err != nil { log.Printf("%v\n", err) } closeLog <- true }