mirror of
https://github.com/go-gitea/gitea.git
synced 2024-08-25 05:37:29 +02:00
335 lines
8.9 KiB
Go
335 lines
8.9 KiB
Go
// +build go1.3
|
|
|
|
// Copyright 2014 The Macaron Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
|
// not use this file except in compliance with the License. You may obtain
|
|
// a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
// License for the specific language governing permissions and limitations
|
|
// under the License.
|
|
|
|
// Package macaron is a high productive and modular web framework in Go.
|
|
package macaron
|
|
|
|
import (
|
|
"io"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
"reflect"
|
|
"strings"
|
|
"sync"
|
|
|
|
"github.com/Unknwon/com"
|
|
"gopkg.in/ini.v1"
|
|
|
|
"github.com/go-macaron/inject"
|
|
)
|
|
|
|
const _VERSION = "1.2.4.1123"
|
|
|
|
func Version() string {
|
|
return _VERSION
|
|
}
|
|
|
|
// Handler can be any callable function.
|
|
// Macaron attempts to inject services into the handler's argument list,
|
|
// and panics if an argument could not be fullfilled via dependency injection.
|
|
type Handler interface{}
|
|
|
|
// handlerFuncInvoker is an inject.FastInvoker wrapper of func(http.ResponseWriter, *http.Request).
|
|
type handlerFuncInvoker func(http.ResponseWriter, *http.Request)
|
|
|
|
func (invoke handlerFuncInvoker) Invoke(params []interface{}) ([]reflect.Value, error) {
|
|
invoke(params[0].(http.ResponseWriter), params[1].(*http.Request))
|
|
return nil, nil
|
|
}
|
|
|
|
// internalServerErrorInvoker is an inject.FastInvoker wrapper of func(rw http.ResponseWriter, err error).
|
|
type internalServerErrorInvoker func(rw http.ResponseWriter, err error)
|
|
|
|
func (invoke internalServerErrorInvoker) Invoke(params []interface{}) ([]reflect.Value, error) {
|
|
invoke(params[0].(http.ResponseWriter), params[1].(error))
|
|
return nil, nil
|
|
}
|
|
|
|
// validateAndWrapHandler makes sure a handler is a callable function, it panics if not.
|
|
// When the handler is also potential to be any built-in inject.FastInvoker,
|
|
// it wraps the handler automatically to have some performance gain.
|
|
func validateAndWrapHandler(h Handler) Handler {
|
|
if reflect.TypeOf(h).Kind() != reflect.Func {
|
|
panic("Macaron handler must be a callable function")
|
|
}
|
|
|
|
if !inject.IsFastInvoker(h) {
|
|
switch v := h.(type) {
|
|
case func(*Context):
|
|
return ContextInvoker(v)
|
|
case func(*Context, *log.Logger):
|
|
return LoggerInvoker(v)
|
|
case func(http.ResponseWriter, *http.Request):
|
|
return handlerFuncInvoker(v)
|
|
case func(http.ResponseWriter, error):
|
|
return internalServerErrorInvoker(v)
|
|
}
|
|
}
|
|
return h
|
|
}
|
|
|
|
// validateAndWrapHandlers preforms validation and wrapping for each input handler.
|
|
// It accepts an optional wrapper function to perform custom wrapping on handlers.
|
|
func validateAndWrapHandlers(handlers []Handler, wrappers ...func(Handler) Handler) []Handler {
|
|
var wrapper func(Handler) Handler
|
|
if len(wrappers) > 0 {
|
|
wrapper = wrappers[0]
|
|
}
|
|
|
|
wrappedHandlers := make([]Handler, len(handlers))
|
|
for i, h := range handlers {
|
|
h = validateAndWrapHandler(h)
|
|
if wrapper != nil && !inject.IsFastInvoker(h) {
|
|
h = wrapper(h)
|
|
}
|
|
wrappedHandlers[i] = h
|
|
}
|
|
|
|
return wrappedHandlers
|
|
}
|
|
|
|
// Macaron represents the top level web application.
|
|
// inject.Injector methods can be invoked to map services on a global level.
|
|
type Macaron struct {
|
|
inject.Injector
|
|
befores []BeforeHandler
|
|
handlers []Handler
|
|
action Handler
|
|
|
|
hasURLPrefix bool
|
|
urlPrefix string // For suburl support.
|
|
*Router
|
|
|
|
logger *log.Logger
|
|
}
|
|
|
|
// NewWithLogger creates a bare bones Macaron instance.
|
|
// Use this method if you want to have full control over the middleware that is used.
|
|
// You can specify logger output writer with this function.
|
|
func NewWithLogger(out io.Writer) *Macaron {
|
|
m := &Macaron{
|
|
Injector: inject.New(),
|
|
action: func() {},
|
|
Router: NewRouter(),
|
|
logger: log.New(out, "[Macaron] ", 0),
|
|
}
|
|
m.Router.m = m
|
|
m.Map(m.logger)
|
|
m.Map(defaultReturnHandler())
|
|
m.NotFound(http.NotFound)
|
|
m.InternalServerError(func(rw http.ResponseWriter, err error) {
|
|
http.Error(rw, err.Error(), 500)
|
|
})
|
|
return m
|
|
}
|
|
|
|
// New creates a bare bones Macaron instance.
|
|
// Use this method if you want to have full control over the middleware that is used.
|
|
func New() *Macaron {
|
|
return NewWithLogger(os.Stdout)
|
|
}
|
|
|
|
// Classic creates a classic Macaron with some basic default middleware:
|
|
// macaron.Logger, macaron.Recovery and macaron.Static.
|
|
func Classic() *Macaron {
|
|
m := New()
|
|
m.Use(Logger())
|
|
m.Use(Recovery())
|
|
m.Use(Static("public"))
|
|
return m
|
|
}
|
|
|
|
// Handlers sets the entire middleware stack with the given Handlers.
|
|
// This will clear any current middleware handlers,
|
|
// and panics if any of the handlers is not a callable function
|
|
func (m *Macaron) Handlers(handlers ...Handler) {
|
|
m.handlers = make([]Handler, 0)
|
|
for _, handler := range handlers {
|
|
m.Use(handler)
|
|
}
|
|
}
|
|
|
|
// Action sets the handler that will be called after all the middleware has been invoked.
|
|
// This is set to macaron.Router in a macaron.Classic().
|
|
func (m *Macaron) Action(handler Handler) {
|
|
handler = validateAndWrapHandler(handler)
|
|
m.action = handler
|
|
}
|
|
|
|
// BeforeHandler represents a handler executes at beginning of every request.
|
|
// Macaron stops future process when it returns true.
|
|
type BeforeHandler func(rw http.ResponseWriter, req *http.Request) bool
|
|
|
|
func (m *Macaron) Before(handler BeforeHandler) {
|
|
m.befores = append(m.befores, handler)
|
|
}
|
|
|
|
// Use adds a middleware Handler to the stack,
|
|
// and panics if the handler is not a callable func.
|
|
// Middleware Handlers are invoked in the order that they are added.
|
|
func (m *Macaron) Use(handler Handler) {
|
|
handler = validateAndWrapHandler(handler)
|
|
m.handlers = append(m.handlers, handler)
|
|
}
|
|
|
|
func (m *Macaron) createContext(rw http.ResponseWriter, req *http.Request) *Context {
|
|
c := &Context{
|
|
Injector: inject.New(),
|
|
handlers: m.handlers,
|
|
action: m.action,
|
|
index: 0,
|
|
Router: m.Router,
|
|
Req: Request{req},
|
|
Resp: NewResponseWriter(rw),
|
|
Render: &DummyRender{rw},
|
|
Data: make(map[string]interface{}),
|
|
}
|
|
c.SetParent(m)
|
|
c.Map(c)
|
|
c.MapTo(c.Resp, (*http.ResponseWriter)(nil))
|
|
c.Map(req)
|
|
return c
|
|
}
|
|
|
|
// ServeHTTP is the HTTP Entry point for a Macaron instance.
|
|
// Useful if you want to control your own HTTP server.
|
|
// Be aware that none of middleware will run without registering any router.
|
|
func (m *Macaron) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
|
|
if m.hasURLPrefix {
|
|
req.URL.Path = strings.TrimPrefix(req.URL.Path, m.urlPrefix)
|
|
}
|
|
for _, h := range m.befores {
|
|
if h(rw, req) {
|
|
return
|
|
}
|
|
}
|
|
m.Router.ServeHTTP(rw, req)
|
|
}
|
|
|
|
func GetDefaultListenInfo() (string, int) {
|
|
host := os.Getenv("HOST")
|
|
if len(host) == 0 {
|
|
host = "0.0.0.0"
|
|
}
|
|
port := com.StrTo(os.Getenv("PORT")).MustInt()
|
|
if port == 0 {
|
|
port = 4000
|
|
}
|
|
return host, port
|
|
}
|
|
|
|
// Run the http server. Listening on os.GetEnv("PORT") or 4000 by default.
|
|
func (m *Macaron) Run(args ...interface{}) {
|
|
host, port := GetDefaultListenInfo()
|
|
if len(args) == 1 {
|
|
switch arg := args[0].(type) {
|
|
case string:
|
|
host = arg
|
|
case int:
|
|
port = arg
|
|
}
|
|
} else if len(args) >= 2 {
|
|
if arg, ok := args[0].(string); ok {
|
|
host = arg
|
|
}
|
|
if arg, ok := args[1].(int); ok {
|
|
port = arg
|
|
}
|
|
}
|
|
|
|
addr := host + ":" + com.ToStr(port)
|
|
logger := m.GetVal(reflect.TypeOf(m.logger)).Interface().(*log.Logger)
|
|
logger.Printf("listening on %s (%s)\n", addr, safeEnv())
|
|
logger.Fatalln(http.ListenAndServe(addr, m))
|
|
}
|
|
|
|
// SetURLPrefix sets URL prefix of router layer, so that it support suburl.
|
|
func (m *Macaron) SetURLPrefix(prefix string) {
|
|
m.urlPrefix = prefix
|
|
m.hasURLPrefix = len(m.urlPrefix) > 0
|
|
}
|
|
|
|
// ____ ____ .__ ___. .__
|
|
// \ \ / /____ _______|__|____ \_ |__ | | ____ ______
|
|
// \ Y /\__ \\_ __ \ \__ \ | __ \| | _/ __ \ / ___/
|
|
// \ / / __ \| | \/ |/ __ \| \_\ \ |_\ ___/ \___ \
|
|
// \___/ (____ /__| |__(____ /___ /____/\___ >____ >
|
|
// \/ \/ \/ \/ \/
|
|
|
|
const (
|
|
DEV = "development"
|
|
PROD = "production"
|
|
TEST = "test"
|
|
)
|
|
|
|
var (
|
|
// Env is the environment that Macaron is executing in.
|
|
// The MACARON_ENV is read on initialization to set this variable.
|
|
Env = DEV
|
|
envLock sync.Mutex
|
|
|
|
// Path of work directory.
|
|
Root string
|
|
|
|
// Flash applies to current request.
|
|
FlashNow bool
|
|
|
|
// Configuration convention object.
|
|
cfg *ini.File
|
|
)
|
|
|
|
func setENV(e string) {
|
|
envLock.Lock()
|
|
defer envLock.Unlock()
|
|
|
|
if len(e) > 0 {
|
|
Env = e
|
|
}
|
|
}
|
|
|
|
func safeEnv() string {
|
|
envLock.Lock()
|
|
defer envLock.Unlock()
|
|
|
|
return Env
|
|
}
|
|
|
|
func init() {
|
|
setENV(os.Getenv("MACARON_ENV"))
|
|
|
|
var err error
|
|
Root, err = os.Getwd()
|
|
if err != nil {
|
|
panic("error getting work directory: " + err.Error())
|
|
}
|
|
}
|
|
|
|
// SetConfig sets data sources for configuration.
|
|
func SetConfig(source interface{}, others ...interface{}) (_ *ini.File, err error) {
|
|
cfg, err = ini.Load(source, others...)
|
|
return Config(), err
|
|
}
|
|
|
|
// Config returns configuration convention object.
|
|
// It returns an empty object if there is no one available.
|
|
func Config() *ini.File {
|
|
if cfg == nil {
|
|
return ini.Empty()
|
|
}
|
|
return cfg
|
|
}
|