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
|
package cache
import (
"fmt"
"strings"
"github.com/MichaelMure/git-bug/bug"
"github.com/MichaelMure/git-bug/bug/operations"
"github.com/MichaelMure/git-bug/repository"
)
type Cacher interface {
RegisterRepository(ref string, repo repository.Repo)
RegisterDefaultRepository(repo repository.Repo)
ResolveRepo(ref string) (RepoCacher, error)
DefaultRepo() (RepoCacher, error)
// Shortcut to resolve on the default repo for convenience
DefaultResolveBug(id string) (BugCacher, error)
DefaultResolveBugPrefix(prefix string) (BugCacher, error)
}
type RepoCacher interface {
ResolveBug(id string) (BugCacher, error)
ResolveBugPrefix(prefix string) (BugCacher, error)
AllBugIds() ([]string, error)
ClearAllBugs()
// Mutations
NewBug(title string, message string) (BugCacher, error)
}
type BugCacher interface {
Snapshot() *bug.Snapshot
ClearSnapshot()
}
// Cacher ------------------------
type RootCache struct {
repos map[string]RepoCacher
}
func NewCache() RootCache {
return RootCache{
repos: make(map[string]RepoCacher),
}
}
func (c *RootCache) RegisterRepository(ref string, repo repository.Repo) {
c.repos[ref] = NewRepoCache(repo)
}
func (c *RootCache) RegisterDefaultRepository(repo repository.Repo) {
c.repos[""] = NewRepoCache(repo)
}
func (c *RootCache) DefaultRepo() (RepoCacher, error) {
if len(c.repos) != 1 {
return nil, fmt.Errorf("repository is not unique")
}
for _, r := range c.repos {
return r, nil
}
panic("unreachable")
}
func (c *RootCache) ResolveRepo(ref string) (RepoCacher, error) {
r, ok := c.repos[ref]
if !ok {
return nil, fmt.Errorf("unknown repo")
}
return r, nil
}
func (c *RootCache) DefaultResolveBug(id string) (BugCacher, error) {
repo, err := c.DefaultRepo()
if err != nil {
return nil, err
}
return repo.ResolveBug(id)
}
func (c *RootCache) DefaultResolveBugPrefix(prefix string) (BugCacher, error) {
repo, err := c.DefaultRepo()
if err != nil {
return nil, err
}
return repo.ResolveBugPrefix(prefix)
}
// Repo ------------------------
type RepoCache struct {
repo repository.Repo
bugs map[string]BugCacher
}
func NewRepoCache(r repository.Repo) RepoCacher {
return &RepoCache{
repo: r,
bugs: make(map[string]BugCacher),
}
}
func (c RepoCache) ResolveBug(id string) (BugCacher, error) {
cached, ok := c.bugs[id]
if ok {
return cached, nil
}
b, err := bug.ReadLocalBug(c.repo, id)
if err != nil {
return nil, err
}
cached = NewBugCache(b)
c.bugs[id] = cached
return cached, nil
}
func (c RepoCache) ResolveBugPrefix(prefix string) (BugCacher, error) {
// preallocate but empty
matching := make([]string, 0, 5)
for id := range c.bugs {
if strings.HasPrefix(id, prefix) {
matching = append(matching, id)
}
}
// TODO: should check matching bug in the repo as well
if len(matching) > 1 {
return nil, fmt.Errorf("Multiple matching bug found:\n%s", strings.Join(matching, "\n"))
}
if len(matching) == 1 {
b := c.bugs[matching[0]]
return b, nil
}
b, err := bug.FindLocalBug(c.repo, prefix)
if err != nil {
return nil, err
}
cached := NewBugCache(b)
c.bugs[b.Id()] = cached
return cached, nil
}
func (c RepoCache) AllBugIds() ([]string, error) {
return bug.ListLocalIds(c.repo)
}
func (c RepoCache) ClearAllBugs() {
c.bugs = make(map[string]BugCacher)
}
func (c RepoCache) NewBug(title string, message string) (BugCacher, error) {
author, err := bug.GetUser(c.repo)
if err != nil {
return nil, err
}
b, err := operations.Create(author, title, message)
if err != nil {
return nil, err
}
err = b.Commit(c.repo)
if err != nil {
return nil, err
}
cached := NewBugCache(b)
c.bugs[b.Id()] = cached
return cached, nil
}
// Bug ------------------------
type BugCache struct {
bug *bug.Bug
snap *bug.Snapshot
}
func NewBugCache(b *bug.Bug) BugCacher {
return &BugCache{
bug: b,
}
}
func (c BugCache) Snapshot() *bug.Snapshot {
if c.snap == nil {
snap := c.bug.Compile()
c.snap = &snap
}
return c.snap
}
func (c BugCache) ClearSnapshot() {
c.snap = nil
}
|
