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
|
/*
Copyright The containerd 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 transfer
import (
"fmt"
"github.com/containerd/log"
"github.com/containerd/platforms"
"github.com/containerd/containerd"
"github.com/containerd/containerd/diff"
"github.com/containerd/containerd/errdefs"
"github.com/containerd/containerd/leases"
"github.com/containerd/containerd/metadata"
"github.com/containerd/containerd/pkg/transfer/local"
"github.com/containerd/containerd/pkg/unpack"
"github.com/containerd/containerd/plugin"
// Load packages with type registrations
_ "github.com/containerd/containerd/pkg/transfer/archive"
_ "github.com/containerd/containerd/pkg/transfer/image"
_ "github.com/containerd/containerd/pkg/transfer/registry"
)
// Register local transfer service plugin
func init() {
plugin.Register(&plugin.Registration{
Type: plugin.TransferPlugin,
ID: "local",
Requires: []plugin.Type{
plugin.LeasePlugin,
plugin.MetadataPlugin,
plugin.DiffPlugin,
},
Config: defaultConfig(),
InitFn: func(ic *plugin.InitContext) (interface{}, error) {
config := ic.Config.(*transferConfig)
m, err := ic.Get(plugin.MetadataPlugin)
if err != nil {
return nil, err
}
ms := m.(*metadata.DB)
l, err := ic.Get(plugin.LeasePlugin)
if err != nil {
return nil, err
}
// Set configuration based on default or user input
var lc local.TransferConfig
lc.MaxConcurrentDownloads = config.MaxConcurrentDownloads
lc.MaxConcurrentUploadedLayers = config.MaxConcurrentUploadedLayers
for _, uc := range config.UnpackConfiguration {
p, err := platforms.Parse(uc.Platform)
if err != nil {
return nil, fmt.Errorf("%s: platform configuration %v invalid", plugin.TransferPlugin, uc.Platform)
}
sn := ms.Snapshotter(uc.Snapshotter)
if sn == nil {
return nil, fmt.Errorf("snapshotter %q not found: %w", uc.Snapshotter, errdefs.ErrNotFound)
}
diffPlugins, err := ic.GetByType(plugin.DiffPlugin)
if err != nil {
return nil, fmt.Errorf("error loading diff plugins: %w", err)
}
var applier diff.Applier
target := platforms.OnlyStrict(p)
if uc.Differ != "" {
plugin, ok := diffPlugins[uc.Differ]
if !ok {
return nil, fmt.Errorf("diff plugin %q: %w", uc.Differ, errdefs.ErrNotFound)
}
inst, err := plugin.Instance()
if err != nil {
return nil, fmt.Errorf("failed to get instance for diff plugin %q: %w", uc.Differ, err)
}
applier = inst.(diff.Applier)
} else {
for name, plugin := range diffPlugins {
var matched bool
for _, p := range plugin.Meta.Platforms {
if target.Match(p) {
matched = true
}
}
if !matched {
continue
}
if applier != nil {
log.G(ic.Context).Warnf("multiple differs match for platform, set `differ` option to choose, skipping %q", name)
continue
}
inst, err := plugin.Instance()
if err != nil {
return nil, fmt.Errorf("failed to get instance for diff plugin %q: %w", name, err)
}
applier = inst.(diff.Applier)
}
}
if applier == nil {
return nil, fmt.Errorf("no matching diff plugins: %w", errdefs.ErrNotFound)
}
up := unpack.Platform{
Platform: target,
SnapshotterKey: uc.Snapshotter,
Snapshotter: sn,
Applier: applier,
}
lc.UnpackPlatforms = append(lc.UnpackPlatforms, up)
}
lc.RegistryConfigPath = config.RegistryConfigPath
return local.NewTransferService(l.(leases.Manager), ms.ContentStore(), metadata.NewImageStore(ms), &lc), nil
},
})
}
type transferConfig struct {
// MaxConcurrentDownloads is the max concurrent content downloads for pull.
MaxConcurrentDownloads int `toml:"max_concurrent_downloads"`
// MaxConcurrentUploadedLayers is the max concurrent uploads for push
MaxConcurrentUploadedLayers int `toml:"max_concurrent_uploaded_layers"`
// UnpackConfiguration is used to read config from toml
UnpackConfiguration []unpackConfiguration `toml:"unpack_config"`
// RegistryConfigPath is a path to the root directory containing registry-specific configurations
RegistryConfigPath string `toml:"config_path"`
}
type unpackConfiguration struct {
// Platform is the target unpack platform to match
Platform string `toml:"platform"`
// Snapshotter is the snapshotter to use to unpack
Snapshotter string `toml:"snapshotter"`
// Differ is the diff plugin to be used for apply
Differ string `toml:"differ"`
}
func defaultConfig() *transferConfig {
return &transferConfig{
MaxConcurrentDownloads: 3,
MaxConcurrentUploadedLayers: 3,
UnpackConfiguration: []unpackConfiguration{
{
Platform: platforms.Format(platforms.DefaultSpec()),
Snapshotter: containerd.DefaultSnapshotter,
},
},
}
}
|
