forked from aptly-dev/aptly
/
package_collection.go
239 lines (198 loc) · 5.57 KB
/
package_collection.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
228
229
230
231
232
233
234
235
236
237
238
239
package deb
import (
"bytes"
"fmt"
"github.com/smira/aptly/database"
"github.com/ugorji/go/codec"
"path/filepath"
)
// PackageCollection does management of packages in DB
type PackageCollection struct {
db database.Storage
encodeBuffer bytes.Buffer
codecHandle *codec.MsgpackHandle
}
// NewPackageCollection creates new PackageCollection and binds it to database
func NewPackageCollection(db database.Storage) *PackageCollection {
return &PackageCollection{
db: db,
codecHandle: &codec.MsgpackHandle{},
}
}
// oldPackage is Package struct for aptly < 0.4 with all fields in one struct
// It is used to decode old aptly DBs
type oldPackage struct {
IsSource bool
Name string
Version string
Architecture string
SourceArchitecture string
Source string
Provides []string
Depends []string
BuildDepends []string
BuildDependsInDep []string
PreDepends []string
Suggests []string
Recommends []string
Files []PackageFile
Extra Stanza
}
// ByKey find package in DB by its key
func (collection *PackageCollection) ByKey(key []byte) (*Package, error) {
encoded, err := collection.db.Get(key)
if err != nil {
return nil, err
}
p := &Package{}
if len(encoded) > 2 && (encoded[0] != 0xc1 || encoded[1] != 0x1) {
oldp := &oldPackage{}
decoder := codec.NewDecoderBytes(encoded, collection.codecHandle)
err = decoder.Decode(oldp)
if err != nil {
return nil, err
}
p.Name = oldp.Name
p.Version = oldp.Version
p.Architecture = oldp.Architecture
p.IsSource = oldp.IsSource
p.SourceArchitecture = oldp.SourceArchitecture
p.Source = oldp.Source
p.Provides = oldp.Provides
p.deps = &PackageDependencies{
Depends: oldp.Depends,
BuildDepends: oldp.BuildDepends,
BuildDependsInDep: oldp.BuildDependsInDep,
PreDepends: oldp.PreDepends,
Suggests: oldp.Suggests,
Recommends: oldp.Recommends,
}
p.extra = &oldp.Extra
for i := range oldp.Files {
oldp.Files[i].Filename = filepath.Base(oldp.Files[i].Filename)
}
p.UpdateFiles(PackageFiles(oldp.Files))
// Save in new format
err = collection.Update(p)
if err != nil {
return nil, err
}
} else {
decoder := codec.NewDecoderBytes(encoded[2:], collection.codecHandle)
err = decoder.Decode(p)
if err != nil {
return nil, err
}
}
p.collection = collection
return p, nil
}
// loadExtra loads Stanza with all the xtra information about the package
func (collection *PackageCollection) loadExtra(p *Package) *Stanza {
encoded, err := collection.db.Get(p.Key("xE"))
if err != nil {
panic("unable to load extra")
}
stanza := &Stanza{}
decoder := codec.NewDecoderBytes(encoded, collection.codecHandle)
err = decoder.Decode(stanza)
if err != nil {
panic("unable to decode extra")
}
return stanza
}
// loadDependencies loads dependencies for the package
func (collection *PackageCollection) loadDependencies(p *Package) *PackageDependencies {
encoded, err := collection.db.Get(p.Key("xD"))
if err != nil {
panic(fmt.Sprintf("unable to load deps: %s, %s", p, err))
}
deps := &PackageDependencies{}
decoder := codec.NewDecoderBytes(encoded, collection.codecHandle)
err = decoder.Decode(deps)
if err != nil {
panic("unable to decode deps")
}
return deps
}
// loadFiles loads additional PackageFiles record
func (collection *PackageCollection) loadFiles(p *Package) *PackageFiles {
encoded, err := collection.db.Get(p.Key("xF"))
if err != nil {
panic("unable to load files")
}
files := &PackageFiles{}
decoder := codec.NewDecoderBytes(encoded, collection.codecHandle)
err = decoder.Decode(files)
if err != nil {
panic("unable to decode files")
}
return files
}
// Update adds or updates information about package in DB checking for conficts first
func (collection *PackageCollection) Update(p *Package) error {
encoder := codec.NewEncoder(&collection.encodeBuffer, collection.codecHandle)
collection.encodeBuffer.Reset()
collection.encodeBuffer.WriteByte(0xc1)
collection.encodeBuffer.WriteByte(0x1)
err := encoder.Encode(p)
if err != nil {
return err
}
err = collection.db.Put(p.Key(""), collection.encodeBuffer.Bytes())
if err != nil {
return err
}
// Encode offloaded fields one by one
if p.files != nil {
collection.encodeBuffer.Reset()
err = encoder.Encode(*p.files)
if err != nil {
return err
}
err = collection.db.Put(p.Key("xF"), collection.encodeBuffer.Bytes())
if err != nil {
return err
}
}
if p.deps != nil {
collection.encodeBuffer.Reset()
err = encoder.Encode(*p.deps)
if err != nil {
return err
}
err = collection.db.Put(p.Key("xD"), collection.encodeBuffer.Bytes())
if err != nil {
return err
}
p.deps = nil
}
if p.extra != nil {
collection.encodeBuffer.Reset()
err = encoder.Encode(*p.extra)
if err != nil {
return err
}
err = collection.db.Put(p.Key("xE"), collection.encodeBuffer.Bytes())
if err != nil {
return err
}
p.extra = nil
}
p.collection = collection
return nil
}
// AllPackageRefs returns list of all packages as PackageRefList
func (collection *PackageCollection) AllPackageRefs() *PackageRefList {
return &PackageRefList{Refs: collection.db.KeysByPrefix([]byte("P"))}
}
// DeleteByKey deletes package in DB by key
func (collection *PackageCollection) DeleteByKey(key []byte) error {
for _, key := range [][]byte{key, append([]byte("xF"), key...), append([]byte("xD"), key...), append([]byte("xE"), key...)} {
err := collection.db.Delete(key)
if err != nil {
return err
}
}
return nil
}