-
Notifications
You must be signed in to change notification settings - Fork 0
/
easy.go
172 lines (141 loc) · 3.44 KB
/
easy.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
package easy
import (
"context"
"log"
"net/http"
"os"
"os/signal"
"syscall"
"time"
"github.com/gorilla/handlers"
"github.com/gorilla/mux"
)
// todo
// 1. 路由的实现
// 2. 希望可以直接从解析出数据
// 3. 支持 fasthttp 后端
// Easy easy
type Easy struct {
*mux.Router
srv *http.Server
shutdown chan struct{}
shutdownComplete chan struct{}
}
// New new easy
func New(opts ...Option) *Easy {
e := &Easy{
Router: mux.NewRouter(),
shutdown: make(chan struct{}),
shutdownComplete: make(chan struct{}),
}
e.new(opts...)
return e
}
func (e *Easy) new(opts ...Option) {
opt := e.defaultOptions()
for _, o := range opts {
o.apply(&opt)
}
e.printOption(opt)
e.srv = &http.Server{
ReadTimeout: opt.readTimeout,
WriteTimeout: opt.writeTimeout,
MaxHeaderBytes: opt.maxHeaderBytes,
Handler: handlers.RecoveryHandler()(e),
}
e.Router.MethodNotAllowedHandler = opt.methodNotAllowedHandler
e.Router.NotFoundHandler = opt.notFoundHandler
}
func (e *Easy) defaultOptions() options {
return options{
readTimeout: 3 * time.Second,
writeTimeout: 3 * time.Second,
maxHeaderBytes: http.DefaultMaxHeaderBytes,
// NotFoundHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// }),
// MethodNotAllowedHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// }),
}
}
func (e *Easy) ServeHTTP(w http.ResponseWriter, r *http.Request) {
e.Router.ServeHTTP(w, r)
}
// ListenAndServe run
func (e *Easy) ListenAndServe(address string) (err error) {
go e.quit()
e.srv.Addr = address
log.Printf("Listen Address: %s\n", address)
err = e.srv.ListenAndServe()
if err != nil && err != http.ErrServerClosed {
return
}
log.Println("Server exit success")
return nil
}
// Shutdown Shutdown
func (e *Easy) quit() {
quit := make(chan os.Signal)
signal.Notify(
quit,
syscall.SIGINT,
syscall.SIGTERM,
)
<-quit
log.Println("Shutdown server")
close(e.shutdown)
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
if err := e.srv.Shutdown(ctx); err != nil {
log.Println("Server Shutdown: ", err)
}
log.Println("Server exiting")
}
func (e *Easy) printOption(opt options) {
log.Printf("Read Timeout: %s\n", opt.readTimeout)
log.Printf("Write Timeout: %s\n", opt.writeTimeout)
}
type options struct {
readTimeout time.Duration
writeTimeout time.Duration
maxHeaderBytes int
notFoundHandler http.Handler
methodNotAllowedHandler http.Handler
}
// Option option
type Option interface {
apply(*options)
}
type optionFunc func(*options)
func (f optionFunc) apply(o *options) {
f(o)
}
// WithReadTimeout set server read time out
func WithReadTimeout(t time.Duration) Option {
return optionFunc(func(o *options) {
o.readTimeout = t
})
}
// WithWriteTimeout set server write time out
func WithWriteTimeout(t time.Duration) Option {
return optionFunc(func(o *options) {
o.writeTimeout = t
})
}
// WithMaxHeaderBytes set server max header size
func WithMaxHeaderBytes(n int) Option {
return optionFunc(func(o *options) {
o.maxHeaderBytes = n
})
}
// WithNotFoundHandler set server 404 Handler
func WithNotFoundHandler(h http.Handler) Option {
return optionFunc(func(o *options) {
o.notFoundHandler = h
})
}
// WithMethodNotAllowedHandler set server 405 Handler
func WithMethodNotAllowedHandler(h http.Handler) Option {
return optionFunc(func(o *options) {
o.methodNotAllowedHandler = h
})
}