63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
package http
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import (
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"encoding/json"
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"errors"
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"log"
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"net/http"
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)
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const (
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HeaderContentType = "Content-Type"
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MimeJSON = "application/json"
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)
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//ErrNotFound is returned when an entity could not be found in Find
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var ErrNotFound = errors.New("entity not found")
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func WriteEntity(w http.ResponseWriter, entityPtr interface{}) error {
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w.Header().Set(HeaderContentType, MimeJSON)
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var out []byte
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var err error
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if entityPtr == nil {
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return nil
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}
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out, err = json.MarshalIndent(entityPtr, " ", " ")
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if err != nil {
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return WriteErrorResponse(w, http.StatusInternalServerError, err.Error())
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}
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if _, err = w.Write(out); err != nil {
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return err
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}
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return nil
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}
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func ReadEntity(request *http.Request, entityPtr interface{}) error {
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decoder := json.NewDecoder(request.Body)
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err := decoder.Decode(entityPtr)
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if err != nil {
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return err
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}
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return nil
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}
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// ErrorResponse - A structured Error HTTP response
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type ErrorResponse struct {
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Status int
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DeveloperMessage string
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}
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// WriteErrorResponse - Creates a new ErrorResponse and writes it to
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// the response
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func WriteErrorResponse(w http.ResponseWriter, status int, message string) error {
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log.Println(status, message)
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w.WriteHeader(status)
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return WriteEntity(w, ErrorResponse{status, message})
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}
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