This repository has been archived by the owner on Feb 14, 2022. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 159
/
apiserver.go
170 lines (149 loc) · 6.01 KB
/
apiserver.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
package apiserver
import (
"net/http"
"reflect"
"unsafe"
"github.com/docker/compose-on-kubernetes/api/compose/v1alpha3"
"github.com/docker/compose-on-kubernetes/api/compose/v1beta1"
"github.com/docker/compose-on-kubernetes/api/compose/v1beta2"
"github.com/docker/compose-on-kubernetes/internal/conversions"
"github.com/docker/compose-on-kubernetes/internal/internalversion"
composeregistry "github.com/docker/compose-on-kubernetes/internal/registry"
"github.com/docker/compose-on-kubernetes/internal/requestaddons"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/version"
"k8s.io/apiserver/pkg/registry/rest"
genericapiserver "k8s.io/apiserver/pkg/server"
genericfilters "k8s.io/apiserver/pkg/server/filters"
"k8s.io/client-go/tools/clientcmd"
)
// Internal variables
var (
Scheme = runtime.NewScheme()
Codecs = serializer.NewCodecFactory(Scheme)
)
func init() {
metav1.AddToGroupVersion(Scheme, schema.GroupVersion{Version: "v1"})
unversioned := schema.GroupVersion{Group: "", Version: "v1"}
Scheme.AddUnversionedTypes(unversioned,
&metav1.Status{},
&metav1.APIVersions{},
&metav1.APIGroupList{},
&metav1.APIGroup{},
&metav1.APIResourceList{},
)
v1beta1.AddToScheme(Scheme)
v1beta2.AddToScheme(Scheme)
v1alpha3.AddToScheme(Scheme)
Scheme.SetVersionPriority(v1alpha3.SchemeGroupVersion, v1beta2.SchemeGroupVersion, v1beta1.SchemeGroupVersion)
internalversion.AddStorageToScheme(Scheme)
internalversion.AddInternalToScheme(Scheme)
if err := conversions.RegisterV1beta1Conversions(Scheme); err != nil {
panic(err)
}
if err := conversions.RegisterV1alpha3Conversions(Scheme); err != nil {
panic(err)
}
if err := conversions.RegisterV1beta2Conversions(Scheme); err != nil {
panic(err)
}
// We do not support protobuf serialization as the `Stack` struct has
// fields with unsupported types (e.g.: map[string]*string). This causes
// issues like https://github.com/docker/compose-on-kubernetes/issues/150.
// The workaround is to remove protobuf from the advertised supported codecs.
removeProtobufMediaType(&Codecs)
}
// removeProtobufMediaType removes protobuf from the list of accepted media
// types for the given CodecFactory.
func removeProtobufMediaType(c *serializer.CodecFactory) {
codecsPtr := reflect.Indirect(reflect.ValueOf(c))
accepts := codecsPtr.FieldByName("accepts")
acceptsPtr := (*[]runtime.SerializerInfo)(unsafe.Pointer(accepts.UnsafeAddr()))
for i, v := range *acceptsPtr {
if v.MediaType == runtime.ContentTypeProtobuf {
*acceptsPtr = append((*acceptsPtr)[0:i], (*acceptsPtr)[i+1:]...)
break
}
}
}
// Config is the API server config
type Config struct {
GenericConfig *genericapiserver.RecommendedConfig
}
type completedConfig struct {
GenericConfig genericapiserver.CompletedConfig
}
// CompletedConfig is the complete API server config
type CompletedConfig struct {
// Embed a private pointer that cannot be instantiated outside of this package.
*completedConfig
}
// Complete fills in any fields not set that are required to have valid data. It's mutating the receiver.
func (cfg *Config) Complete() CompletedConfig {
cfg.GenericConfig.BuildHandlerChainFunc = func(apiHandler http.Handler, c *genericapiserver.Config) (secure http.Handler) {
handler := requestaddons.WithSkipValidationHandler(apiHandler)
return genericapiserver.DefaultBuildHandlerChain(handler, c)
}
c := completedConfig{
GenericConfig: cfg.GenericConfig.Complete(),
}
c.GenericConfig.Version = &version.Info{
Major: "1",
Minor: "0",
}
c.GenericConfig.LongRunningFunc = genericfilters.BasicLongRunningRequestCheck(sets.NewString("watch"), sets.NewString("log"))
return CompletedConfig{&c}
}
// ComposeServer is the compose api server
type ComposeServer struct {
*genericapiserver.GenericAPIServer
}
// New returns a new instance of ComposeServer from the given config.
func (c completedConfig) New(kubeconfig string) (*ComposeServer, error) {
config, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
if err != nil {
return nil, err
}
genericServer, err := c.GenericConfig.New("compose-apiserver", genericapiserver.NewEmptyDelegate())
if err != nil {
return nil, err
}
s := &ComposeServer{
GenericAPIServer: genericServer,
}
apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(v1beta2.GroupName, Scheme, metav1.ParameterCodec, Codecs)
stackRegistry1, err := composeregistry.NewStackREST(composeregistry.APIV1beta1, Scheme, c.GenericConfig.RESTOptionsGetter, config)
if err != nil {
return nil, err
}
stackRegistry2, err := composeregistry.NewStackREST(composeregistry.APIV1beta2, Scheme, c.GenericConfig.RESTOptionsGetter, config)
if err != nil {
return nil, err
}
stackOwnerRegistry1 := composeregistry.NewStackOwnerRest(stackRegistry1, composeregistry.APIV1beta1)
v1beta1storage := map[string]rest.Storage{}
v1beta1storage["stacks"] = stackRegistry1
v1beta1storage["stacks/owner"] = stackOwnerRegistry1
apiGroupInfo.VersionedResourcesStorageMap["v1beta1"] = v1beta1storage
stackOwnerRegistry2 := composeregistry.NewStackOwnerRest(stackRegistry2, composeregistry.APIV1beta2)
stackComposeFileRegistry := composeregistry.NewStackComposeFileRest(stackRegistry1)
stackScaleRegistry := composeregistry.NewStackScaleRest(stackRegistry2, config)
stackLogRegistry := composeregistry.NewStackLogRest(config)
v1beta2storage := map[string]rest.Storage{}
v1beta2storage["stacks"] = stackRegistry2
v1beta2storage["stacks/owner"] = stackOwnerRegistry2
v1beta2storage["stacks/composeFile"] = stackComposeFileRegistry
v1beta2storage["stacks/scale"] = stackScaleRegistry
v1beta2storage["stacks/log"] = stackLogRegistry
apiGroupInfo.VersionedResourcesStorageMap["v1beta2"] = v1beta2storage
// v1alpha3 has exactly the same implementation as v1beta2
apiGroupInfo.VersionedResourcesStorageMap["v1alpha3"] = v1beta2storage
if err := s.GenericAPIServer.InstallAPIGroup(&apiGroupInfo); err != nil {
return nil, err
}
return s, nil
}