//the function which handle the post method
//post the json data from broswer to the server and sql databases
func POST(w http.ResponseWriter, r *http.Request) {
//time when do request
RequestStart := time.Now()
//get the raw bytes of input data
bytes, errs := ioutil.ReadAll(r.Body)
if errs != nil {
errString := fmt.Sprintf("buffer overflow %s", errs)
response(w, errString, "", http.StatusBadRequest)
return
}
//store the raw bytes to a temporary struct and log the Json invalid format
var point Click
errs = json.Unmarshal(bytes, &point)
if errs != nil {
errString := fmt.Sprintf("invalid Json format: %s", errs)
response(w, errString, "", http.StatusBadRequest)
structured.Error("", "", errString, 0, nil)
return
}
//validate the input and log error input message
if point.AdvertiserID == 0 || point.SiteID == 0 {
errString := "your advertiserID or site ID may equals to 0"
response(w, errString, "", http.StatusBadRequest)
structured.Error("", "", errString, 0, nil)
return
}
//generate a ramdom id for the post data and also get the ip address
id := Id(point.AdvertiserID)
ip := r.RemoteAddr
//store the data from the struct to the sql databases and log the error or latency time
QueryStart := time.Now()
_, errs = db.Exec("INSERT INTO clicks(id, advertiser_id, site_id, ip, ios_ifa, google_aid, windows_aid, date_time) VALUES(?, ?, ?, ?, ?, ?, ?,?)",
id, point.AdvertiserID, point.SiteID, ip, point.IosIfa, point.GoogleAid, point.WindowsAid, RequestStart)
if errs != nil {
fmt.Println(errs) //show to the sever protecter inside of users
errString := "sorry, there is an error"
response(w, errString, "", http.StatusInternalServerError)
errString = fmt.Sprintf("database connection error : %s", errs)
structured.Error("", "", errString, 0, nil)
return
}
//sucess and log the request latency
response(w, "", id, http.StatusOK)
structured.Info(point.ID, point.Type, "Post successful!", point.SiteID,
structured.ExtraFields{structured.RequestLatency: time.Since(RequestStart),
structured.QueryLatency: time.Since(QueryStart)})
}
//function that handles the GET method
//retrieve the json data form from database/server and output to the browser
func GET(writer http.ResponseWriter, reader *http.Request) {
// time the method
var starttime = time.Now()
///get the id from the hashmap
id := mux.Vars(reader)["id"]
//select data from sql databases according to the id
row := db.QueryRow("SELECT id, advertiser_id, site_id, ip, ios_ifa, google_aid, windows_aid, date_time FROM clicks WHERE id=?", id)
//store the data from sql database in a temp struct
var c Click
err := row.Scan(&c.ID, &c.AdvertiserID, &c.SiteID, &c.IP, &c.IosIfa, &c.GoogleAid, &c.WindowsAid, &c.Date_time)
//check for errors in scan (404 and 500)
if err == sql.ErrNoRows {
// fmt.Println(err)
writer.WriteHeader(http.StatusNotFound)
structured.Error(c.ID, c.Type, "Error 404: no rows found", c.SiteID, nil)
return
} else if err != nil {
writer.WriteHeader(http.StatusInternalServerError)
structured.Error(c.ID, c.Type, "Error 500: Internal server error", c.SiteID, nil)
return
}
// log the event
structured.Info(c.ID, c.Type, "GET successful", c.SiteID,
structured.ExtraFields{structured.RequestLatency: time.Since(starttime)})
}