69 lines
1.4 KiB
Go
69 lines
1.4 KiB
Go
package api
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import (
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"context"
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"encoding/json"
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"net/http"
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"strconv"
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"github.com/mediocregopher/mediocre-go-lib/v2/mlog"
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)
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type loggerCtxKey int
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func setRequestLogger(r *http.Request, logger *mlog.Logger) *http.Request {
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ctx := r.Context()
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ctx = context.WithValue(ctx, loggerCtxKey(0), logger)
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return r.WithContext(ctx)
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}
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func getRequestLogger(r *http.Request) *mlog.Logger {
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ctx := r.Context()
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logger, _ := ctx.Value(loggerCtxKey(0)).(*mlog.Logger)
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if logger == nil {
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logger = mlog.Null
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}
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return logger
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}
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func jsonResult(rw http.ResponseWriter, r *http.Request, v interface{}) {
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b, err := json.Marshal(v)
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if err != nil {
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internalServerError(rw, r, err)
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return
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}
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b = append(b, '\n')
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rw.Header().Set("Content-Type", "application/json")
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rw.Write(b)
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}
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func badRequest(rw http.ResponseWriter, r *http.Request, err error) {
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getRequestLogger(r).Warn(r.Context(), "bad request", err)
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rw.WriteHeader(400)
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jsonResult(rw, r, struct {
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Error string `json:"error"`
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}{
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Error: err.Error(),
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})
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}
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func internalServerError(rw http.ResponseWriter, r *http.Request, err error) {
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getRequestLogger(r).Error(r.Context(), "internal server error", err)
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rw.WriteHeader(500)
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jsonResult(rw, r, struct {
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Error string `json:"error"`
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}{
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Error: "internal server error",
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})
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}
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func strToInt(str string, defaultVal int) (int, error) {
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if str == "" {
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return defaultVal, nil
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}
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return strconv.Atoi(str)
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}
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