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report-average-dyn.go
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report-average-dyn.go
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// report-average-dyn
package restapi
import (
"encoding/json"
"net/http"
"strconv"
"strings"
)
// getReportStudentAverageMarkDynRequest используется в GetReportStudentAverageMarkDynHandler
type getReportStudentAverageMarkDynRequest struct {
ID int `json:"id"`
Type string `json:"type"`
From string `json:"from"`
To string `json:"to"`
}
// GetReportStudentAverageMarkDynHandler обрабатывает запрос на получение отчета
// о динамике среднего балла
func (rest *RestAPI) GetReportStudentAverageMarkDynHandler(respwr http.ResponseWriter, req *http.Request) {
rest.logger.Info("REST: GetReportStudentAverageMarkDynHandler called", "IP", req.RemoteAddr)
// Проверка метода запроса
if req.Method != "POST" {
rest.logger.Info("REST: Wrong method", "Method", req.Method, "IP", req.RemoteAddr)
respwr.WriteHeader(http.StatusMethodNotAllowed)
return
}
// Получить существующие имя и объект локальной сессии
sessionName, session := rest.getLocalSession(respwr, req)
if session == nil {
return
}
// Чтение запроса от клиента
var rReq getReportStudentAverageMarkDynRequest
decoder := json.NewDecoder(req.Body)
err := decoder.Decode(&rReq)
if err != nil {
rest.logger.Info("REST: Malformed request data", "Error", err.Error(), "IP", req.RemoteAddr)
respwr.WriteHeader(http.StatusBadRequest)
status, err := respwr.Write(rest.Errors.MalformedData)
if err != nil {
rest.logger.Error("REST: Error occured when sending response", "Error", err, "Status", status, "IP", req.RemoteAddr)
} else {
rest.logger.Info("REST: Successfully sent response", "IP", req.RemoteAddr)
}
return
}
// Распечатаем запрос от клиента
rest.logger.Info("REST: Request data", "Data", rReq, "IP", req.RemoteAddr)
// Получим удаленную сессию
remoteSession, ok := rest.sessionsMap[sessionName]
if !ok {
// Если нет удаленной сессии
rest.logger.Info("REST: No remote session", "IP", req.RemoteAddr)
// Создать новую
remoteSession = rest.remoteRelogin(respwr, req, session)
if remoteSession == nil {
return
}
}
// Получить отчет с сайта школы
averageMarkDynReport, err := remoteSession.GetAverageMarkDynReport(rReq.From, rReq.To, rReq.Type, strconv.Itoa(rReq.ID))
if err != nil {
if strings.Contains(err.Error(), "You was logged out from server") {
// Если удаленная сессия есть, но не активна
rest.logger.Info("REST: Remote connection timed out", "IP", req.RemoteAddr)
// Создать новую
remoteSession = rest.remoteRelogin(respwr, req, session)
if remoteSession == nil {
return
}
// Повторно получить отчет с сайта школы
averageMarkDynReport, err = remoteSession.GetAverageMarkDynReport(rReq.From, rReq.To, rReq.Type, strconv.Itoa(rReq.ID))
if err != nil {
// Ошибка
rest.logger.Error("REST: Error occured when getting data from site", "Error", err, "IP", req.RemoteAddr)
respwr.WriteHeader(http.StatusBadGateway)
return
}
} else {
// Другая ошибка
rest.logger.Error("REST: Error occured when getting data from site", "Error", err, "IP", req.RemoteAddr)
respwr.WriteHeader(http.StatusBadGateway)
return
}
}
// Закодировать ответ в JSON
bytes, err := json.Marshal(averageMarkDynReport)
if err != nil {
rest.logger.Error("REST: Error occured when marshalling response", "Error", err, "Response", averageMarkDynReport, "IP", req.RemoteAddr)
respwr.WriteHeader(http.StatusInternalServerError)
return
}
// Отправить ответ клиенту
status, err := respwr.Write(bytes)
if err != nil {
rest.logger.Error("REST: Error occured when sending response", "Error", err, "Response", averageMarkDynReport, "Status", status, "IP", req.RemoteAddr)
} else {
rest.logger.Info("REST: Successfully sent response", "Response", averageMarkDynReport, "IP", req.RemoteAddr)
}
}