package appcontext import ( // stdlib "encoding/json" "net/http" "os" // 3rd-party "lab.pztrn.name/golibs/flagger" "lab.pztrn.name/golibs/mogrus" // local "lab.pztrn.name/fat0troll/wind8_fetcher/lib/config" ) // Context is an application context struct type Context struct { Cfg *config.Config HTTPServerMux *http.ServeMux Log *mogrus.LoggerHandler StartupFlags *flagger.Flagger } // Init is an initialization function for context func (c *Context) Init() { l := mogrus.New() l.Initialize() c.Log = l.CreateLogger("stdout") c.Log.CreateOutput("stdout", os.Stdout, true) c.Cfg = config.New() c.StartupFlags = flagger.New(c.Log) c.StartupFlags.Initialize() c.HTTPServerMux = http.NewServeMux() } // InitializeConfig fills config struct with data from given file func (c *Context) InitializeConfig(configPath string) { c.Cfg.Init(c.Log, configPath) } // InitializeStartupFlags gives information about available startup flags func (c *Context) InitializeStartupFlags() { configFlag := flagger.Flag{} configFlag.Name = "config" configFlag.Description = "Configuration file path" configFlag.Type = "string" configFlag.DefaultValue = "config.yaml" err := c.StartupFlags.AddFlag(&configFlag) if err != nil { c.Log.Errorln(err) } } // StartHTTPListener starts HTTP server on given port func (c *Context) StartHTTPListener() { response := make(map[string]string) responseBody := make([]byte, 0) c.HTTPServerMux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { w.Header().Add("Content-Type", "application/json; charset=utf-8") w.WriteHeader(404) response["status"] = "error" response["error_coder"] = "404" response["descirption"] = "Not found." responseBody, _ = json.Marshal(response) w.Write(responseBody) }) c.Log.Info("HTTP server started at http://" + c.Cfg.HTTPListener.Host + ":" + c.Cfg.HTTPListener.Port) err := http.ListenAndServe(c.Cfg.HTTPListener.Host+":"+c.Cfg.HTTPListener.Port, c.HTTPServerMux) c.Log.Fatalln(err) }