websocket ready, wip invoice watcher
Chakib Benziane
5 years ago
parent
b1e4ee4196
commit
bcd3160cfd
@ -0,0 +1,80 @@
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package ln
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import (
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"encoding/json"
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"log"
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"time"
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"git.sp4ke.com/sp4ke/bit4sat/db"
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"github.com/mediocregopher/radix/v3"
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)
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type Invoice struct {
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Id string `json:"id"`
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CreatedAt time.Time `json:"created_at"`
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Description string `json:"description"`
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ExpiresAt time.Time `json:"expires_at"`
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Msatoshi int `json:"msatoshi"`
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Payreq string `json:"payreq"`
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RHash string `json:"r_hash"`
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Status string `json:"status"`
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UploadId string `json:"upload_id"`
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}
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type InvoiceWatcher struct{}
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func (w *InvoiceWatcher) Run() {
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watchedKey := "watch_invoices"
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for {
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var invoiceBlob []byte
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popTimeout := "0" //block until ready
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err := db.DB.Redis.Do(radix.Cmd(&invoiceBlob,
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"BLPOP",
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watchedKey,
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popTimeout))
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if err != nil {
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log.Println("error in InvoiceWatcher ", err)
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continue
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}
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invoice := Invoice{}
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err = json.Unmarshal(invoiceBlob, &invoice)
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if err != nil {
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log.Println("error unmarshaling in InvoiceWatcher ", err)
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}
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go func() {
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log.Println("Starting goroutine to watch invoice")
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time.Sleep(10 * time.Second)
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//charge := ln.NewCharge()
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// Blocking function
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//rawInvoice, err := charge.PollInvoice(invoice.Id)
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//if err != nil {
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//return err
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//}
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//err = SetUploadStatus(uploadId, UpWaitingStorage)
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//if err != nil {
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//log.Printf("Error setting upload status", err)
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//}
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// Set paid upload invoice id
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//err = SetPaidUploadInvoice(uploadId, invoice)
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//if err != nil {
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//return err
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//}
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}()
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time.Sleep(1 * time.Second)
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}
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}
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func NewInvoiceWatcher() *InvoiceWatcher {
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return &InvoiceWatcher{}
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}
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@ -1,108 +0,0 @@
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package main
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import (
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"bytes"
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"log"
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"net/http"
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"time"
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"github.com/gin-gonic/gin"
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"github.com/gorilla/websocket"
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)
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const (
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// Time allowed to write message to peer
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writeWait = 10 * time.Second
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// Time allowed to read the next pong message from the client.
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pongWait = 5 * time.Second
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// Send pings to client with this period. Must be less than pongWait.
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pingPeriod = (pongWait * 9) / 10
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//pingPeriod = 5 * time.Second
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// Maximum message size
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maxMessageSize = 512
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)
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var upgrader = websocket.Upgrader{
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ReadBufferSize: 1024,
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WriteBufferSize: 1024,
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CheckOrigin: func(r *http.Request) bool {
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return true
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},
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}
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var (
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conn *websocket.Conn
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)
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var (
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newline = []byte{'\n'}
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space = []byte{' '}
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)
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func reader() {
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defer conn.Close()
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conn.SetReadLimit(maxMessageSize)
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conn.SetReadDeadline(time.Now().Add(pongWait))
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conn.SetPongHandler(func(string) error {
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//log.Println("pong")
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conn.SetReadDeadline(time.Now().Add(pongWait))
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return nil
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})
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for {
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_, message, err := conn.ReadMessage()
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if err != nil {
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if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway,
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websocket.CloseAbnormalClosure) {
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log.Printf("error: %v", err)
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}
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break
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}
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message = bytes.TrimSpace(bytes.Replace(message, newline, space, -1))
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}
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}
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func writer() {
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pingTicker := time.NewTicker(pingPeriod)
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defer func() {
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log.Println("quit ws server")
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pingTicker.Stop()
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conn.Close()
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}()
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for {
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select {
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case <-pingTicker.C:
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//log.Println("ping")
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conn.SetWriteDeadline(time.Now().Add(writeWait))
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if err := conn.WriteMessage(websocket.PingMessage, nil); err != nil {
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log.Println(err)
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return
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}
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}
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}
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}
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func serveWebsocket(c *gin.Context) {
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var err error
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log.Println("websocket request")
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conn, err = upgrader.Upgrade(c.Writer, c.Request, nil)
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if err != nil {
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if _, ok := err.(websocket.HandshakeError); !ok {
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log.Printf("handshake error: %s", err)
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}
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log.Println(err)
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return
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}
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go writer()
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reader()
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}
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@ -0,0 +1,142 @@
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package ws
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import (
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"encoding/json"
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"log"
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"net/http"
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"time"
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"github.com/gin-gonic/gin"
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"github.com/gorilla/websocket"
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)
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const (
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// Time allowed to write message to peer
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writeWait = 10 * time.Second
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// Time allowed to read the next pong message from the client.
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pongWait = 5 * time.Second
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// Send pings to client with this period. Must be less than pongWait.
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pingPeriod = (pongWait * 9) / 10
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//pingPeriod = 5 * time.Second
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// Maximum message size
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maxMessageSize = 512
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)
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var upgrader = websocket.Upgrader{
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ReadBufferSize: 1024,
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WriteBufferSize: 1024,
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CheckOrigin: func(r *http.Request) bool {
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return true
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},
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}
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var C *Client
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// Interface to talk to websocket
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type Client struct {
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// websocket connection
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conn *websocket.Conn
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// Buffered channel of outbound messages
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send chan []byte
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}
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func (c *Client) readPump() {
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defer c.conn.Close()
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c.conn.SetReadLimit(maxMessageSize)
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c.conn.SetReadDeadline(time.Now().Add(pongWait))
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c.conn.SetPongHandler(func(string) error {
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//log.Println("pong")
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c.conn.SetReadDeadline(time.Now().Add(pongWait))
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return nil
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})
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for {
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_, message, err := c.conn.ReadMessage()
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if err != nil {
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if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway,
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websocket.CloseAbnormalClosure) {
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log.Printf("error: %v", err)
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}
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break
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}
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recvData := make(map[string]interface{})
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json.Unmarshal(message, &recvData)
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log.Println(recvData)
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}
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}
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func (c *Client) writePump() {
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//testTicker := time.NewTicker(5 * time.Second)
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pingTicker := time.NewTicker(pingPeriod)
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defer func() {
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log.Println("quit ws server")
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pingTicker.Stop()
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c.conn.Close()
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}()
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for {
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select {
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//case <-testTicker.C:
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//c.conn.SetWriteDeadline(time.Now().Add(writeWait))
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//msg := gin.H{
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//"msg": "hello",
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//"data": "from server",
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//}
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//w, err := c.conn.NextWriter(websocket.TextMessage)
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//if err != nil {
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//log.Println(err)
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//return
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//}
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//enc := json.NewEncoder(w)
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//err = enc.Encode(msg)
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//if err != nil {
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//log.Println(err)
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//return
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//}
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//if err = w.Close(); err != nil {
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//log.Println(err)
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//return
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//}
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case <-pingTicker.C:
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//log.Println("ping")
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c.conn.SetWriteDeadline(time.Now().Add(writeWait))
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if err := c.conn.WriteMessage(websocket.PingMessage, nil); err != nil {
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log.Println(err)
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return
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}
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}
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}
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}
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func Serve(c *gin.Context) {
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log.Println("websocket request")
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conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
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if err != nil {
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if _, ok := err.(websocket.HandshakeError); !ok {
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log.Printf("handshake error: %s", err)
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}
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log.Println(err)
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return
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}
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C = &Client{conn: conn, send: make(chan []byte, 256)}
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go C.writePump()
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go C.readPump()
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}
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