func (rs *RedisSubscriber) Subscribe(channel string, msgChan chan<- *message.Message) {
pubsub, err := rs.redisClient.Subscribe(channel)
if err != nil {
panic(err)
}
defer pubsub.Close()
for {
redisMsg, err := pubsub.ReceiveMessage()
if err != nil {
log.Println("Error on receiving msg from redis: %v", err)
}
msg, err := message.NewMessageFromJSON(redisMsg.Payload)
if err != nil {
log.Println("Error on parsing msg: %v", err)
}
log.Println(msg.ToJSON())
msgChan <- msg
}
}
func main() {
configPath := kingpin.Flag("config", "Configuration path").Short('c').Required().String()
kingpin.Parse()
eventStreamConfig := config.NewEventStreamConfigFromJSONFile(configPath)
rs := common.NewRedisSubscriber(eventStreamConfig.RedisConfig)
go rs.Subscribe(eventStreamConfig.RedisConfig.PubSubChannel, msgChannel)
e := echo.New()
// Middleware
e.Use(mw.Logger())
e.Use(mw.Recover())
e.Index(eventStreamConfig.StaticPath + "/index.html")
e.Static("/", eventStreamConfig.StaticPath)
e.Get("/api", apiHandler)
log.Println("Event stream is running on port: %s", eventStreamConfig.Port)
e.Run(":" + eventStreamConfig.Port)
}
// New creates an instance of Echo.
func New() (e *Echo) {
e = &Echo{maxParam: new(int)}
e.pool.New = func() interface{} {
return NewContext(nil, new(Response), e)
}
e.router = NewRouter(e)
//----------
// Defaults
//----------
e.HTTP2(true)
e.defaultHTTPErrorHandler = func(err error, c *Context) {
code := http.StatusInternalServerError
msg := http.StatusText(code)
if he, ok := err.(*HTTPError); ok {
code = he.code
msg = he.message
}
if e.debug {
msg = err.Error()
}
if !c.response.committed {
http.Error(c.response, msg, code)
}
if e.debug {
log.Println(err)
}
}
e.SetHTTPErrorHandler(e.defaultHTTPErrorHandler)
e.SetBinder(&binder{})
// Logger
e.logger = log.New("echo")
e.logger.SetLevel(log.INFO)
return
}