func configRoute(c web.C, w http.ResponseWriter, r *http.Request) {
if r.Method == "POST" {
r.ParseForm()
confData := r.FormValue("configData")
if !isJSON(confData) {
http.Error(w, "Invalid json", 500)
return
}
var newConf common.ConfigType
json.Unmarshal([]byte(confData), &newConf)
common.SetConfig(newConf)
http.Redirect(w, r, "/config?success=Saved", http.StatusFound)
}
conf := common.GetConfig()
json, err := json.MarshalIndent(conf, "", " ")
if err != nil {
http.Error(w, err.Error(), 500)
return
}
templateArgs := map[string]interface{}{
"configData": strings.TrimSpace(string(json)),
"success": r.URL.Query().Get("success"),
}
fmt.Fprintln(w, getTemplate("config", templateArgs))
}
func homeRoute(c web.C, w http.ResponseWriter, r *http.Request) {
status := common.GetStatus()
config := common.GetConfig()
templateArgs := map[string]interface{}{
"url": config.URL,
"enabled": !status.Disabled,
"lastPingTime": status.LastRunAt.Format("2006-01-02 15:04:05 MST"),
"lastStatus": status.LastStatus,
"numContacts": len(config.Phones),
}
fmt.Fprintln(w, getTemplate("home", templateArgs))
}
func callDevTeam() {
config := common.GetConfig()
twilio := gotwilio.NewTwilioClient(config.TwilioSID, config.TwilioAuthToken)
messageURL := "http://twimlets.com/message?Message%5B0%5D=SITE%20IS%20DOWN!"
callbackParams := gotwilio.NewCallbackParameters(messageURL)
for _, num := range config.Phones {
fmt.Printf("!!! Calling %s\n", num)
_, tException, err := twilio.CallWithUrlCallbacks(config.TwilioCallFrom, num, callbackParams)
if tException != nil {
panic(fmt.Sprintf("Twilio error: %+v\n", tException))
}
check(err)
}
}
func pingSite(c *cli.Context) {
simulateDown := c.GlobalBool("down")
config := common.GetConfig()
status := common.GetStatus()
if config.URL == "" {
return
}
defer func() {
if e := recover(); e != nil {
switch x := e.(type) {
case error:
common.HipchatMessage(x.Error())
default:
common.HipchatMessage(fmt.Sprintf("%v", x))
}
panic(e)
}
}()
client := &http.Client{
Timeout: time.Duration(20 * time.Second),
}
req, err := http.NewRequest("GET", config.URL, nil)
if err != nil {
log.Fatalln(err)
}
req.Close = true
req.Header.Set("User-Agent", "SupPinger")
isError := false
statusCode := 0
resp, err := client.Do(req)
if err != nil && err != io.EOF {
fmt.Printf("err: %+v\n", err)
fmt.Printf("resp: %+v\n", resp)
isError = true
}
if resp != nil {
defer resp.Body.Close()
statusCode = resp.StatusCode
}
if simulateDown || isError || statusCode != http.StatusOK {
log.Println("Site is down. Status is ", statusCode)
status.NumErrors++
if status.NumErrors >= 5 && !status.Disabled {
callDevTeam()
}
} else {
status.NumErrors = 0
}
status.LastStatus = statusCode
status.LastRunAt = time.Now()
common.SetStatus(status)
}
func main() {
app := cli.NewApp()
app.Name = "sup"
app.Usage = "check if site is up"
app.Flags = []cli.Flag{
cli.StringFlag{
Name: "logfile",
Value: "",
Usage: "log messages go here. if not present, log to stdout",
},
cli.StringFlag{
Name: "redis_url",
Value: "redis://localhost:6379",
Usage: "redis url",
EnvVar: "REDIS_URL",
},
cli.BoolFlag{
Name: "down",
Usage: "simulate the site being down",
},
cli.IntFlag{
Name: "port",
Usage: "web server will listen on this port",
EnvVar: "PORT",
Value: 8000,
},
cli.StringFlag{
Name: "web_auth",
Value: "",
Usage: "basic http auth for web server. format: username:password",
EnvVar: "WEB_AUTH",
},
cli.BoolFlag{
Name: "forever",
Usage: "run ping on repeat",
},
cli.BoolFlag{
Name: "web",
Usage: "run web server",
},
}
app.Action = func(c *cli.Context) {
if c.GlobalString("logfile") != "" {
logfile, err := os.OpenFile(c.GlobalString("logfile"), os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
check(err)
defer logfile.Close()
log.SetOutput(logfile)
}
common.RedisURL = c.GlobalString("redis_url")
config := common.GetConfig()
if c.GlobalBool("down") {
log.Println("We're going to pretend the site is down, even if it's not")
}
if c.GlobalBool("web") {
err := webserver.StartWebServer(":"+strconv.Itoa(c.GlobalInt("port")), c.GlobalString("web_auth"))
if err != nil {
log.Fatal(err)
}
} else if c.GlobalBool("forever") {
fmt.Printf("Pinging %s every %d seconds\n", config.URL, c.GlobalInt("pingFreq"))
for {
pingSite(c)
pingFreq := config.PingFreq
if pingFreq < 60 {
log.Println("pingFreq is to low, bumping it up to 60")
pingFreq = 60
}
time.Sleep(time.Duration(pingFreq) * time.Second)
}
} else {
fmt.Printf("Pinging %s\n", config.URL)
pingSite(c)
}
}
app.Run(os.Args)
}