forked from kubernetes/kubernetes
-
-
Notifications
You must be signed in to change notification settings - Fork 0
/
subresources.go
190 lines (157 loc) · 6.28 KB
/
subresources.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
/*
Copyright 2014 The Kubernetes 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 rest
import (
"fmt"
"net/http"
"net/url"
"path"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/rest"
"k8s.io/kubernetes/pkg/capabilities"
"k8s.io/kubernetes/pkg/kubelet/client"
"k8s.io/kubernetes/pkg/registry/generic/registry"
genericrest "k8s.io/kubernetes/pkg/registry/generic/rest"
"k8s.io/kubernetes/pkg/registry/pod"
"k8s.io/kubernetes/pkg/runtime"
)
// ProxyREST implements the proxy subresource for a Pod
type ProxyREST struct {
Store *registry.Store
ProxyTransport http.RoundTripper
}
// Implement Connecter
var _ = rest.Connecter(&ProxyREST{})
var proxyMethods = []string{"GET", "POST", "PUT", "DELETE", "HEAD", "OPTIONS"}
// New returns an empty pod resource
func (r *ProxyREST) New() runtime.Object {
return &api.Pod{}
}
// ConnectMethods returns the list of HTTP methods that can be proxied
func (r *ProxyREST) ConnectMethods() []string {
return proxyMethods
}
// NewConnectOptions returns versioned resource that represents proxy parameters
func (r *ProxyREST) NewConnectOptions() (runtime.Object, bool, string) {
return &api.PodProxyOptions{}, true, "path"
}
// Connect returns a handler for the pod proxy
func (r *ProxyREST) Connect(ctx api.Context, id string, opts runtime.Object, responder rest.Responder) (http.Handler, error) {
proxyOpts, ok := opts.(*api.PodProxyOptions)
if !ok {
return nil, fmt.Errorf("Invalid options object: %#v", opts)
}
location, transport, err := pod.ResourceLocation(r.Store, r.ProxyTransport, ctx, id)
if err != nil {
return nil, err
}
location.Path = path.Join(location.Path, proxyOpts.Path)
// Return a proxy handler that uses the desired transport, wrapped with additional proxy handling (to get URL rewriting, X-Forwarded-* headers, etc)
return newThrottledUpgradeAwareProxyHandler(location, transport, true, false, responder), nil
}
// Support both GET and POST methods. We must support GET for browsers that want to use WebSockets.
var upgradeableMethods = []string{"GET", "POST"}
// AttachREST implements the attach subresource for a Pod
type AttachREST struct {
Store *registry.Store
KubeletConn client.ConnectionInfoGetter
}
// Implement Connecter
var _ = rest.Connecter(&AttachREST{})
// New creates a new Pod object
func (r *AttachREST) New() runtime.Object {
return &api.Pod{}
}
// Connect returns a handler for the pod exec proxy
func (r *AttachREST) Connect(ctx api.Context, name string, opts runtime.Object, responder rest.Responder) (http.Handler, error) {
attachOpts, ok := opts.(*api.PodAttachOptions)
if !ok {
return nil, fmt.Errorf("Invalid options object: %#v", opts)
}
location, transport, err := pod.AttachLocation(r.Store, r.KubeletConn, ctx, name, attachOpts)
if err != nil {
return nil, err
}
return newThrottledUpgradeAwareProxyHandler(location, transport, false, true, responder), nil
}
// NewConnectOptions returns the versioned object that represents exec parameters
func (r *AttachREST) NewConnectOptions() (runtime.Object, bool, string) {
return &api.PodAttachOptions{}, false, ""
}
// ConnectMethods returns the methods supported by exec
func (r *AttachREST) ConnectMethods() []string {
return upgradeableMethods
}
// ExecREST implements the exec subresource for a Pod
type ExecREST struct {
Store *registry.Store
KubeletConn client.ConnectionInfoGetter
}
// Implement Connecter
var _ = rest.Connecter(&ExecREST{})
// New creates a new Pod object
func (r *ExecREST) New() runtime.Object {
return &api.Pod{}
}
// Connect returns a handler for the pod exec proxy
func (r *ExecREST) Connect(ctx api.Context, name string, opts runtime.Object, responder rest.Responder) (http.Handler, error) {
execOpts, ok := opts.(*api.PodExecOptions)
if !ok {
return nil, fmt.Errorf("invalid options object: %#v", opts)
}
location, transport, err := pod.ExecLocation(r.Store, r.KubeletConn, ctx, name, execOpts)
if err != nil {
return nil, err
}
return newThrottledUpgradeAwareProxyHandler(location, transport, false, true, responder), nil
}
// NewConnectOptions returns the versioned object that represents exec parameters
func (r *ExecREST) NewConnectOptions() (runtime.Object, bool, string) {
return &api.PodExecOptions{}, false, ""
}
// ConnectMethods returns the methods supported by exec
func (r *ExecREST) ConnectMethods() []string {
return upgradeableMethods
}
// PortForwardREST implements the portforward subresource for a Pod
type PortForwardREST struct {
Store *registry.Store
KubeletConn client.ConnectionInfoGetter
}
// Implement Connecter
var _ = rest.Connecter(&PortForwardREST{})
// New returns an empty pod object
func (r *PortForwardREST) New() runtime.Object {
return &api.Pod{}
}
// NewConnectOptions returns nil since portforward doesn't take additional parameters
func (r *PortForwardREST) NewConnectOptions() (runtime.Object, bool, string) {
return nil, false, ""
}
// ConnectMethods returns the methods supported by portforward
func (r *PortForwardREST) ConnectMethods() []string {
return upgradeableMethods
}
// Connect returns a handler for the pod portforward proxy
func (r *PortForwardREST) Connect(ctx api.Context, name string, opts runtime.Object, responder rest.Responder) (http.Handler, error) {
location, transport, err := pod.PortForwardLocation(r.Store, r.KubeletConn, ctx, name)
if err != nil {
return nil, err
}
return newThrottledUpgradeAwareProxyHandler(location, transport, false, true, responder), nil
}
func newThrottledUpgradeAwareProxyHandler(location *url.URL, transport http.RoundTripper, wrapTransport, upgradeRequired bool, responder rest.Responder) *genericrest.UpgradeAwareProxyHandler {
handler := genericrest.NewUpgradeAwareProxyHandler(location, transport, wrapTransport, upgradeRequired, responder)
handler.MaxBytesPerSec = capabilities.Get().PerConnectionBandwidthLimitBytesPerSec
return handler
}