forked from openshift/origin
-
Notifications
You must be signed in to change notification settings - Fork 0
/
dockerregistry.go
227 lines (194 loc) · 6.52 KB
/
dockerregistry.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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
package dockerregistry
import (
"crypto/tls"
"crypto/x509"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"time"
log "github.com/Sirupsen/logrus"
gorillahandlers "github.com/gorilla/handlers"
"github.com/Sirupsen/logrus/formatters/logstash"
"github.com/docker/distribution/configuration"
"github.com/docker/distribution/context"
"github.com/docker/distribution/health"
"github.com/docker/distribution/reference"
"github.com/docker/distribution/registry/auth"
"github.com/docker/distribution/registry/handlers"
"github.com/docker/distribution/uuid"
"github.com/docker/distribution/version"
_ "github.com/docker/distribution/registry/auth/htpasswd"
_ "github.com/docker/distribution/registry/auth/token"
_ "github.com/docker/distribution/registry/storage/driver/azure"
_ "github.com/docker/distribution/registry/storage/driver/filesystem"
_ "github.com/docker/distribution/registry/storage/driver/middleware/cloudfront"
_ "github.com/docker/distribution/registry/storage/driver/s3"
_ "github.com/docker/distribution/registry/storage/driver/swift"
"github.com/openshift/origin/pkg/cmd/server/crypto"
"github.com/openshift/origin/pkg/dockerregistry/server"
)
// Execute runs the Docker registry.
func Execute(configFile io.Reader) {
config, err := configuration.Parse(configFile)
if err != nil {
log.Fatalf("Error parsing configuration file: %s", err)
}
ctx := context.Background()
ctx, err = configureLogging(ctx, config)
if err != nil {
log.Fatalf("error configuring logger: %v", err)
}
log.Infof("version=%s", version.Version)
// inject a logger into the uuid library. warns us if there is a problem
// with uuid generation under low entropy.
uuid.Loggerf = context.GetLogger(ctx).Warnf
app := handlers.NewApp(ctx, config)
// TODO add https scheme
adminRouter := app.NewRoute().PathPrefix("/admin/").Subrouter()
pruneAccessRecords := func(*http.Request) []auth.Access {
return []auth.Access{
{
Resource: auth.Resource{
Type: "admin",
},
Action: "prune",
},
}
}
app.RegisterRoute(
// DELETE /admin/blobs/<digest>
adminRouter.Path("/blobs/{digest:"+reference.DigestRegexp.String()+"}").Methods("DELETE"),
// handler
server.BlobDispatcher,
// repo name not required in url
handlers.NameNotRequired,
// custom access records
pruneAccessRecords,
)
app.RegisterHealthChecks()
handler := alive("/", app)
// TODO: temporarily keep for backwards compatibility; remove in the future
handler = alive("/healthz", handler)
handler = health.Handler(handler)
handler = panicHandler(handler)
handler = gorillahandlers.CombinedLoggingHandler(os.Stdout, handler)
if config.HTTP.TLS.Certificate == "" {
context.GetLogger(app).Infof("listening on %v", config.HTTP.Addr)
if err := http.ListenAndServe(config.HTTP.Addr, handler); err != nil {
context.GetLogger(app).Fatalln(err)
}
} else {
tlsConf := crypto.SecureTLSConfig(&tls.Config{ClientAuth: tls.NoClientCert})
if len(config.HTTP.TLS.ClientCAs) != 0 {
pool := x509.NewCertPool()
for _, ca := range config.HTTP.TLS.ClientCAs {
caPem, err := ioutil.ReadFile(ca)
if err != nil {
context.GetLogger(app).Fatalln(err)
}
if ok := pool.AppendCertsFromPEM(caPem); !ok {
context.GetLogger(app).Fatalln(fmt.Errorf("Could not add CA to pool"))
}
}
for _, subj := range pool.Subjects() {
context.GetLogger(app).Debugf("CA Subject: %s", string(subj))
}
tlsConf.ClientAuth = tls.RequireAndVerifyClientCert
tlsConf.ClientCAs = pool
}
context.GetLogger(app).Infof("listening on %v, tls", config.HTTP.Addr)
server := &http.Server{
Addr: config.HTTP.Addr,
Handler: handler,
TLSConfig: tlsConf,
}
if err := server.ListenAndServeTLS(config.HTTP.TLS.Certificate, config.HTTP.TLS.Key); err != nil {
context.GetLogger(app).Fatalln(err)
}
}
}
// configureLogging prepares the context with a logger using the
// configuration.
func configureLogging(ctx context.Context, config *configuration.Configuration) (context.Context, error) {
if config.Log.Level == "" && config.Log.Formatter == "" {
// If no config for logging is set, fallback to deprecated "Loglevel".
log.SetLevel(logLevel(config.Loglevel))
ctx = context.WithLogger(ctx, context.GetLogger(ctx))
return ctx, nil
}
log.SetLevel(logLevel(config.Log.Level))
formatter := config.Log.Formatter
if formatter == "" {
formatter = "text" // default formatter
}
switch formatter {
case "json":
log.SetFormatter(&log.JSONFormatter{
TimestampFormat: time.RFC3339Nano,
})
case "text":
log.SetFormatter(&log.TextFormatter{
TimestampFormat: time.RFC3339Nano,
})
case "logstash":
log.SetFormatter(&logstash.LogstashFormatter{
TimestampFormat: time.RFC3339Nano,
})
default:
// just let the library use default on empty string.
if config.Log.Formatter != "" {
return ctx, fmt.Errorf("unsupported logging formatter: %q", config.Log.Formatter)
}
}
if config.Log.Formatter != "" {
log.Debugf("using %q logging formatter", config.Log.Formatter)
}
if len(config.Log.Fields) > 0 {
// build up the static fields, if present.
var fields []interface{}
for k := range config.Log.Fields {
fields = append(fields, k)
}
ctx = context.WithValues(ctx, config.Log.Fields)
ctx = context.WithLogger(ctx, context.GetLogger(ctx, fields...))
}
return ctx, nil
}
func logLevel(level configuration.Loglevel) log.Level {
l, err := log.ParseLevel(string(level))
if err != nil {
l = log.InfoLevel
log.Warnf("error parsing level %q: %v, using %q ", level, err, l)
}
return l
}
// alive simply wraps the handler with a route that always returns an http 200
// response when the path is matched. If the path is not matched, the request
// is passed to the provided handler. There is no guarantee of anything but
// that the server is up. Wrap with other handlers (such as health.Handler)
// for greater affect.
func alive(path string, handler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == path {
w.Header().Set("Cache-Control", "no-cache")
w.WriteHeader(http.StatusOK)
return
}
handler.ServeHTTP(w, r)
})
}
// panicHandler add a HTTP handler to web app. The handler recover the happening
// panic. logrus.Panic transmits panic message to pre-config log hooks, which is
// defined in config.yml.
func panicHandler(handler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
defer func() {
if err := recover(); err != nil {
log.Panic(fmt.Sprintf("%v", err))
}
}()
handler.ServeHTTP(w, r)
})
}