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controller.go
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controller.go
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package stgin
import (
"fmt"
"mime/multipart"
"net/http"
"strings"
"time"
)
type Controller struct {
Name string
routes []Route
prefix string
requestListeners []RequestListener
responseListeners []ResponseListener
apiListeners []APIListener
}
func NewController(name string) *Controller {
return &Controller{
Name: name,
}
}
func (controller *Controller) SetRoutePrefix(prefix string) {
if strings.HasPrefix(prefix, "/") {
controller.prefix = prefix
} else {
controller.prefix = fmt.Sprintf("%v%v", "/", prefix)
}
}
func (controller *Controller) AddRoutes(routes ...Route) {
for _, route := range routes {
path := normalizePath(controller.prefix + route.Path)
route.controller = controller
route.correspondingRegex = getRoutePatternRegexOrPanic(path)
controller.routes = append(controller.routes, route)
}
}
func (controller *Controller) AddRequestListeners(listeners ...RequestListener) {
controller.requestListeners = append(controller.requestListeners, listeners...)
}
func (controller *Controller) AddResponseListener(listeners ...ResponseListener) {
controller.responseListeners = append(controller.responseListeners, listeners...)
}
func (controller *Controller) AddAPIListeners(listeners ...APIListener) {
controller.apiListeners = append(controller.apiListeners, listeners...)
}
func (controller *Controller) executeInternal(request *http.Request) Status {
body := RequestBody{
underlying: nil,
underlyingBytes: []byte{},
hasFilledBytes: false,
}
rc := RequestContext{
Url: request.URL.Path,
QueryParams: request.URL.Query(),
PathParams: nil,
Headers: request.Header,
Body: &body,
receivedAt: time.Now(),
Method: request.Method,
ContentLength: request.ContentLength,
Host: request.Host,
MultipartForm: func() *multipart.Form {
return request.MultipartForm
},
Scheme: request.URL.Scheme,
RemoteAddr: request.RemoteAddr,
}
for _, modifier := range controller.requestListeners {
rc = modifier(rc)
}
var done bool
var result Status
for _, route := range controller.routes {
var r Route
r = route.withPrefixPrepended(controller.prefix)
matches, pathParams := r.acceptsAndPathParams(request)
if !matches {
continue
} else {
rc.PathParams = pathParams
done = true
result = route.Action(rc)
break
}
}
if !done {
result = NotFound(Json(&generalFailureMessage{
StatusCode: 404,
Path: request.URL.Path,
Message: "not found",
Method: request.Method,
}))
}
for _, modifier := range controller.responseListeners {
result = modifier(result)
}
for _, watcher := range controller.apiListeners {
watcher(rc, result)
}
return result
}