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
|
package mobius
import (
"bytes"
"encoding/json"
"github.com/jhalter/mobius/hotline"
"io"
"log"
"log/slog"
"net/http"
)
type logResponseWriter struct {
http.ResponseWriter
statusCode int
buf bytes.Buffer
}
func NewLogResponseWriter(w http.ResponseWriter) *logResponseWriter {
return &logResponseWriter{w, http.StatusOK, bytes.Buffer{}}
}
func (lrw *logResponseWriter) WriteHeader(code int) {
lrw.statusCode = code
lrw.ResponseWriter.WriteHeader(code)
}
func (lrw *logResponseWriter) Write(b []byte) (int, error) {
lrw.buf.Write(b)
return lrw.ResponseWriter.Write(b)
}
type APIServer struct {
hlServer *hotline.Server
logger *slog.Logger
mux *http.ServeMux
}
func (srv *APIServer) logMiddleware(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
lrw := NewLogResponseWriter(w)
next.ServeHTTP(lrw, r)
srv.logger.Info("req", "method", r.Method, "url", r.URL.Path, "remoteAddr", r.RemoteAddr, "response_code", lrw.statusCode)
})
}
func NewAPIServer(hlServer *hotline.Server, reloadFunc func(), logger *slog.Logger) *APIServer {
srv := APIServer{
hlServer: hlServer,
logger: logger,
mux: http.NewServeMux(),
}
srv.mux.Handle("/api/v1/reload", srv.logMiddleware(http.HandlerFunc(srv.ReloadHandler(reloadFunc))))
srv.mux.Handle("/api/v1/shutdown", srv.logMiddleware(http.HandlerFunc(srv.ShutdownHandler)))
srv.mux.Handle("/api/v1/stats", srv.logMiddleware(http.HandlerFunc(srv.RenderStats)))
return &srv
}
func (srv *APIServer) ShutdownHandler(w http.ResponseWriter, r *http.Request) {
msg, err := io.ReadAll(r.Body)
if err != nil || len(msg) == 0 {
w.WriteHeader(http.StatusBadRequest)
return
}
go srv.hlServer.Shutdown(msg)
_, _ = io.WriteString(w, `{ "msg": "server shutting down" }`)
}
func (srv *APIServer) ReloadHandler(reloadFunc func()) func(w http.ResponseWriter, _ *http.Request) {
return func(w http.ResponseWriter, _ *http.Request) {
reloadFunc()
_, _ = io.WriteString(w, `{ "msg": "config reloaded" }`)
}
}
func (srv *APIServer) RenderStats(w http.ResponseWriter, _ *http.Request) {
u, err := json.Marshal(srv.hlServer.CurrentStats())
if err != nil {
panic(err)
}
_, _ = io.WriteString(w, string(u))
}
func (srv *APIServer) Serve(port string) {
err := http.ListenAndServe(port, srv.mux)
if err != nil {
log.Fatal(err)
}
}
|
