-
Notifications
You must be signed in to change notification settings - Fork 39.2k
/
factory.go
190 lines (158 loc) · 6.53 KB
/
factory.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 2016 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 generators
import (
"io"
clientgentypes "k8s.io/code-generator/cmd/client-gen/types"
"k8s.io/gengo/generator"
"k8s.io/gengo/namer"
"k8s.io/gengo/types"
"github.com/golang/glog"
)
// factoryGenerator produces a file of listers for a given GroupVersion and
// type.
type factoryGenerator struct {
generator.DefaultGen
outputPackage string
imports namer.ImportTracker
groupVersions map[string]clientgentypes.GroupVersions
clientSetPackage string
internalInterfacesPackage string
filtered bool
}
var _ generator.Generator = &factoryGenerator{}
func (g *factoryGenerator) Filter(c *generator.Context, t *types.Type) bool {
if !g.filtered {
g.filtered = true
return true
}
return false
}
func (g *factoryGenerator) Namers(c *generator.Context) namer.NameSystems {
return namer.NameSystems{
"raw": namer.NewRawNamer(g.outputPackage, g.imports),
}
}
func (g *factoryGenerator) Imports(c *generator.Context) (imports []string) {
imports = append(imports, g.imports.ImportLines()...)
return
}
func (g *factoryGenerator) GenerateType(c *generator.Context, t *types.Type, w io.Writer) error {
sw := generator.NewSnippetWriter(w, c, "{{", "}}")
glog.V(5).Infof("processing type %v", t)
gvInterfaces := make(map[string]*types.Type)
gvNewFuncs := make(map[string]*types.Type)
for groupName := range g.groupVersions {
gvInterfaces[groupName] = c.Universe.Type(types.Name{Package: packageForGroup(vendorless(g.outputPackage), g.groupVersions[groupName].Group), Name: "Interface"})
gvNewFuncs[groupName] = c.Universe.Function(types.Name{Package: packageForGroup(vendorless(g.outputPackage), g.groupVersions[groupName].Group), Name: "New"})
}
m := map[string]interface{}{
"cacheSharedIndexInformer": c.Universe.Type(cacheSharedIndexInformer),
"groupVersions": g.groupVersions,
"gvInterfaces": gvInterfaces,
"gvNewFuncs": gvNewFuncs,
"interfacesNewInformerFunc": c.Universe.Type(types.Name{Package: g.internalInterfacesPackage, Name: "NewInformerFunc"}),
"informerFactoryInterface": c.Universe.Type(types.Name{Package: g.internalInterfacesPackage, Name: "SharedInformerFactory"}),
"clientSetInterface": c.Universe.Type(types.Name{Package: g.clientSetPackage, Name: "Interface"}),
"reflectType": c.Universe.Type(reflectType),
"runtimeObject": c.Universe.Type(runtimeObject),
"schemaGroupVersionResource": c.Universe.Type(schemaGroupVersionResource),
"syncMutex": c.Universe.Type(syncMutex),
"timeDuration": c.Universe.Type(timeDuration),
}
sw.Do(sharedInformerFactoryStruct, m)
sw.Do(sharedInformerFactoryInterface, m)
return sw.Error()
}
var sharedInformerFactoryStruct = `
type sharedInformerFactory struct {
client {{.clientSetInterface|raw}}
lock {{.syncMutex|raw}}
defaultResync {{.timeDuration|raw}}
informers map[{{.reflectType|raw}}]{{.cacheSharedIndexInformer|raw}}
// startedInformers is used for tracking which informers have been started.
// This allows Start() to be called multiple times safely.
startedInformers map[{{.reflectType|raw}}]bool
}
// NewSharedInformerFactory constructs a new instance of sharedInformerFactory
func NewSharedInformerFactory(client {{.clientSetInterface|raw}}, defaultResync {{.timeDuration|raw}}) SharedInformerFactory {
return &sharedInformerFactory{
client: client,
defaultResync: defaultResync,
informers: make(map[{{.reflectType|raw}}]{{.cacheSharedIndexInformer|raw}}),
startedInformers: make(map[{{.reflectType|raw}}]bool),
}
}
// Start initializes all requested informers.
func (f *sharedInformerFactory) Start(stopCh <-chan struct{}) {
f.lock.Lock()
defer f.lock.Unlock()
for informerType, informer := range f.informers {
if !f.startedInformers[informerType] {
go informer.Run(stopCh)
f.startedInformers[informerType] = true
}
}
}
// WaitForCacheSync waits for all started informers' cache were synced.
func (f *sharedInformerFactory) WaitForCacheSync(stopCh <-chan struct{}) map[reflect.Type]bool {
informers := func()map[reflect.Type]cache.SharedIndexInformer{
f.lock.Lock()
defer f.lock.Unlock()
informers := map[reflect.Type]cache.SharedIndexInformer{}
for informerType, informer := range f.informers {
if f.startedInformers[informerType] {
informers[informerType] = informer
}
}
return informers
}()
res := map[reflect.Type]bool{}
for informType, informer := range informers {
res[informType] = cache.WaitForCacheSync(stopCh, informer.HasSynced)
}
return res
}
// InternalInformerFor returns the SharedIndexInformer for obj using an internal
// client.
func (f *sharedInformerFactory) InformerFor(obj {{.runtimeObject|raw}}, newFunc {{.interfacesNewInformerFunc|raw}}) {{.cacheSharedIndexInformer|raw}} {
f.lock.Lock()
defer f.lock.Unlock()
informerType := reflect.TypeOf(obj)
informer, exists := f.informers[informerType]
if exists {
return informer
}
informer = newFunc(f.client, f.defaultResync)
f.informers[informerType] = informer
return informer
}
`
var sharedInformerFactoryInterface = `
// SharedInformerFactory provides shared informers for resources in all known
// API group versions.
type SharedInformerFactory interface {
{{.informerFactoryInterface|raw}}
ForResource(resource {{.schemaGroupVersionResource|raw}}) (GenericInformer, error)
WaitForCacheSync(stopCh <-chan struct{}) map[reflect.Type]bool
{{$gvInterfaces := .gvInterfaces}}
{{range $groupName, $group := .groupVersions}}{{$groupName}}() {{index $gvInterfaces $groupName|raw}}
{{end}}
}
{{$gvNewFuncs := .gvNewFuncs}}
{{range $groupName, $group := .groupVersions}}
func (f *sharedInformerFactory) {{$groupName}}() {{index $gvInterfaces $groupName|raw}} {
return {{index $gvNewFuncs $groupName|raw}}(f)
}
{{end}}
`