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
|
package bug
import (
"fmt"
"strings"
"github.com/MichaelMure/git-bug/repository"
"github.com/pkg/errors"
)
// Fetch retrieve update from a remote
// This does not change the local bugs state
func Fetch(repo repository.Repo, remote string) (string, error) {
remoteRefSpec := fmt.Sprintf(bugsRemoteRefPattern, remote)
fetchRefSpec := fmt.Sprintf("%s*:%s*", bugsRefPattern, remoteRefSpec)
return repo.FetchRefs(remote, fetchRefSpec)
}
// Push update a remote with the local changes
func Push(repo repository.Repo, remote string) (string, error) {
return repo.PushRefs(remote, bugsRefPattern+"*")
}
// Pull will do a Fetch + MergeAll
// This function won't give details on the underlying process. If you need more
// use Fetch and MergeAll separately.
func Pull(repo repository.ClockedRepo, remote string) error {
_, err := Fetch(repo, remote)
if err != nil {
return err
}
for merge := range MergeAll(repo, remote) {
if merge.Err != nil {
return merge.Err
}
}
return nil
}
// MergeAll will merge all the available remote bug
func MergeAll(repo repository.ClockedRepo, remote string) <-chan MergeResult {
out := make(chan MergeResult)
go func() {
defer close(out)
remoteRefSpec := fmt.Sprintf(bugsRemoteRefPattern, remote)
remoteRefs, err := repo.ListRefs(remoteRefSpec)
if err != nil {
out <- MergeResult{Err: err}
return
}
for _, remoteRef := range remoteRefs {
refSplitted := strings.Split(remoteRef, "/")
id := refSplitted[len(refSplitted)-1]
remoteBug, err := readBug(repo, remoteRef)
if err != nil {
out <- newMergeInvalidStatus(id, errors.Wrap(err, "remote bug is not readable").Error())
continue
}
// Check for error in remote data
if err := remoteBug.Validate(); err != nil {
out <- newMergeInvalidStatus(id, errors.Wrap(err, "remote bug is invalid").Error())
continue
}
localRef := bugsRefPattern + remoteBug.Id()
localExist, err := repo.RefExist(localRef)
if err != nil {
out <- newMergeError(err, id)
continue
}
// the bug is not local yet, simply create the reference
if !localExist {
err := repo.CopyRef(remoteRef, localRef)
if err != nil {
out <- newMergeError(err, id)
return
}
out <- newMergeStatus(MergeStatusNew, id, remoteBug)
continue
}
localBug, err := readBug(repo, localRef)
if err != nil {
out <- newMergeError(errors.Wrap(err, "local bug is not readable"), id)
return
}
updated, err := localBug.Merge(repo, remoteBug)
if err != nil {
out <- newMergeInvalidStatus(id, errors.Wrap(err, "merge failed").Error())
return
}
if updated {
out <- newMergeStatus(MergeStatusUpdated, id, localBug)
} else {
out <- newMergeStatus(MergeStatusNothing, id, localBug)
}
}
}()
return out
}
// MergeStatus represent the result of a merge operation of a bug
type MergeStatus int
const (
_ MergeStatus = iota
MergeStatusNew
MergeStatusInvalid
MergeStatusUpdated
MergeStatusNothing
)
type MergeResult struct {
// Err is set when a terminal error occur in the process
Err error
Id string
Status MergeStatus
// Only set for invalid status
Reason string
// Not set for invalid status
Bug *Bug
}
func (mr MergeResult) String() string {
switch mr.Status {
case MergeStatusNew:
return "new"
case MergeStatusInvalid:
return fmt.Sprintf("invalid data: %s", mr.Reason)
case MergeStatusUpdated:
return "updated"
case MergeStatusNothing:
return "nothing to do"
default:
panic("unknown merge status")
}
}
func newMergeError(err error, id string) MergeResult {
return MergeResult{
Err: err,
Id: id,
}
}
func newMergeStatus(status MergeStatus, id string, bug *Bug) MergeResult {
return MergeResult{
Id: id,
Status: status,
// Bug is not set for an invalid merge result
Bug: bug,
}
}
func newMergeInvalidStatus(id string, reason string) MergeResult {
return MergeResult{
Id: id,
Status: MergeStatusInvalid,
Reason: reason,
}
}
|
