go-server.routers.mustache Maven / Gradle / Ivy
{{>partial_header}}
package {{packageName}}
import (
"encoding/json"
"io/ioutil"
"net/http"
"os"
"strconv"
{{#featureCORS}}
"github.com/gorilla/handlers"
{{/featureCORS}}
"github.com/gorilla/mux"
)
// A Route defines the parameters for an api endpoint
type Route struct {
Name string
Method string
Pattern string
HandlerFunc http.HandlerFunc
}
// Routes are a collection of defined api endpoints
type Routes []Route
// Router defines the required methods for retrieving api routes
type Router interface {
Routes() Routes
}
// NewRouter creates a new router for any number of api routers
func NewRouter(routers ...Router) *mux.Router {
router := mux.NewRouter().StrictSlash(true)
for _, api := range routers {
for _, route := range api.Routes() {
var handler http.Handler
handler = route.HandlerFunc
handler = Logger(handler, route.Name)
{{#featureCORS}}
handler = handlers.CORS()(handler)
{{/featureCORS}}
router.
Methods(route.Method).
Path(route.Pattern).
Name(route.Name).
Handler(handler)
}
}
return router
}
// EncodeJSONResponse uses the json encoder to write an interface to the http response with an optional status code
func EncodeJSONResponse(i interface{}, status *int, w http.ResponseWriter) error {
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
if status != nil {
w.WriteHeader(*status)
} else {
w.WriteHeader(http.StatusOK)
}
return json.NewEncoder(w).Encode(i)
}
// ReadFormFileToTempFile reads file data from a request form and writes it to a temporary file
func ReadFormFileToTempFile(r *http.Request, key string) (*os.File, error) {
r.ParseForm()
formFile, _, err := r.FormFile(key)
if err != nil {
return nil, err
}
defer formFile.Close()
file, err := ioutil.TempFile("tmp", key)
if err != nil {
return nil, err
}
defer file.Close()
fileBytes, err := ioutil.ReadAll(formFile)
if err != nil {
return nil, err
}
file.Write(fileBytes)
return file, nil
}
// parseIntParameter parses a sting parameter to an int64
func parseIntParameter(param string) (int64, error) {
return strconv.ParseInt(param, 10, 64)
}
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