/
handler.go
92 lines (79 loc) · 3.16 KB
/
handler.go
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package http
import (
"context"
endpoint "github.com/haunguyenctnp/ebanking-gokit/transactions/pkg/endpoint"
"encoding/json"
"errors"
http1 "net/http"
http "github.com/go-kit/kit/transport/http"
handlers "github.com/gorilla/handlers"
mux "github.com/gorilla/mux"
)
func makeGetHandler(m *mux.Router, endpoints endpoint.Endpoints, options []http.ServerOption) {
m.Methods("POST").Path("/get").Handler(handlers.CORS(handlers.AllowedMethods([]string{"POST"}), handlers.AllowedOrigins([]string{"*"}))(http.NewServer(endpoints.GetEndpoint, decodeGetRequest, encodeGetResponse, options...)))
}
func decodeGetRequest(_ context.Context, r *http1.Request) (interface{}, error) {
req := endpoint.GetRequest{}
err := json.NewDecoder(r.Body).Decode(&req)
return req, err
}
func encodeGetResponse(ctx context.Context, w http1.ResponseWriter, response interface{}) (err error) {
if f, ok := response.(endpoint.Failure); ok && f.Failed() != nil {
ErrorEncoder(ctx, f.Failed(), w)
return nil
}
w.Header().Set("Content-Type", "application/json; charset=utf-8")
err = json.NewEncoder(w).Encode(response)
return
}
func makeCreateHandler(m *mux.Router, endpoints endpoint.Endpoints, options []http.ServerOption) {
m.Methods("POST").Path("/create").Handler(handlers.CORS(handlers.AllowedMethods([]string{"POST"}), handlers.AllowedOrigins([]string{"*"}))(http.NewServer(endpoints.CreateEndpoint, decodeCreateRequest, encodeCreateResponse, options...)))
}
func decodeCreateRequest(_ context.Context, r *http1.Request) (interface{}, error) {
req := endpoint.CreateRequest{}
err := json.NewDecoder(r.Body).Decode(&req)
return req, err
}
func encodeCreateResponse(ctx context.Context, w http1.ResponseWriter, response interface{}) (err error) {
if f, ok := response.(endpoint.Failure); ok && f.Failed() != nil {
ErrorEncoder(ctx, f.Failed(), w)
return nil
}
w.Header().Set("Content-Type", "application/json; charset=utf-8")
err = json.NewEncoder(w).Encode(response)
return
}
func ErrorEncoder(_ context.Context, err error, w http1.ResponseWriter) {
w.WriteHeader(err2code(err))
json.NewEncoder(w).Encode(errorWrapper{Error: err.Error()})
}
func ErrorDecoder(r *http1.Response) error {
var w errorWrapper
if err := json.NewDecoder(r.Body).Decode(&w); err != nil {
return err
}
return errors.New(w.Error)
}
func err2code(err error) int {
return http1.StatusInternalServerError
}
type errorWrapper struct {
Error string `json:"error"`
}
func makeDeleteAllHandler(m *mux.Router, endpoints endpoint.Endpoints, options []http.ServerOption) {
m.Handle("/delete-all", http.NewServer(endpoints.DeleteAllEndpoint, decodeDeleteAllRequest, encodeDeleteAllResponse, options...))
}
func decodeDeleteAllRequest(_ context.Context, r *http1.Request) (interface{}, error) {
req := endpoint.DeleteAllRequest{}
err := json.NewDecoder(r.Body).Decode(&req)
return req, err
}
func encodeDeleteAllResponse(ctx context.Context, w http1.ResponseWriter, response interface{}) (err error) {
if f, ok := response.(endpoint.Failure); ok && f.Failed() != nil {
ErrorEncoder(ctx, f.Failed(), w)
return nil
}
w.Header().Set("Content-Type", "application/json; charset=utf-8")
err = json.NewEncoder(w).Encode(response)
return
}