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