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
|
package bug
import (
"encoding/json"
"fmt"
"github.com/pkg/errors"
"github.com/MichaelMure/git-bug/entity"
"github.com/MichaelMure/git-bug/repository"
)
// 1: original format
// 2: no more legacy identities
const formatVersion = 2
// OperationPack represent an ordered set of operation to apply
// to a Bug. These operations are stored in a single Git commit.
//
// These commits will be linked together in a linear chain of commits
// inside Git to form the complete ordered chain of operation to
// apply to get the final state of the Bug
type OperationPack struct {
Operations []Operation
// Private field so not serialized
commitHash repository.Hash
}
func (opp *OperationPack) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Version uint `json:"version"`
Operations []Operation `json:"ops"`
}{
Version: formatVersion,
Operations: opp.Operations,
})
}
func (opp *OperationPack) UnmarshalJSON(data []byte) error {
aux := struct {
Version uint `json:"version"`
Operations []json.RawMessage `json:"ops"`
}{}
if err := json.Unmarshal(data, &aux); err != nil {
return err
}
if aux.Version < formatVersion {
return entity.NewErrOldFormatVersion(aux.Version)
}
if aux.Version > formatVersion {
return entity.NewErrNewFormatVersion(aux.Version)
}
for _, raw := range aux.Operations {
var t struct {
OperationType OperationType `json:"type"`
}
if err := json.Unmarshal(raw, &t); err != nil {
return err
}
// delegate to specialized unmarshal function
op, err := opp.unmarshalOp(raw, t.OperationType)
if err != nil {
return err
}
opp.Operations = append(opp.Operations, op)
}
return nil
}
func (opp *OperationPack) unmarshalOp(raw []byte, _type OperationType) (Operation, error) {
switch _type {
case AddCommentOp:
op := &AddCommentOperation{}
err := json.Unmarshal(raw, &op)
return op, err
case CreateOp:
op := &CreateOperation{}
err := json.Unmarshal(raw, &op)
return op, err
case EditCommentOp:
op := &EditCommentOperation{}
err := json.Unmarshal(raw, &op)
return op, err
case LabelChangeOp:
op := &LabelChangeOperation{}
err := json.Unmarshal(raw, &op)
return op, err
case NoOpOp:
op := &NoOpOperation{}
err := json.Unmarshal(raw, &op)
return op, err
case SetMetadataOp:
op := &SetMetadataOperation{}
err := json.Unmarshal(raw, &op)
return op, err
case SetStatusOp:
op := &SetStatusOperation{}
err := json.Unmarshal(raw, &op)
return op, err
case SetTitleOp:
op := &SetTitleOperation{}
err := json.Unmarshal(raw, &op)
return op, err
default:
return nil, fmt.Errorf("unknown operation type %v", _type)
}
}
// Append a new operation to the pack
func (opp *OperationPack) Append(op Operation) {
opp.Operations = append(opp.Operations, op)
}
// IsEmpty tell if the OperationPack is empty
func (opp *OperationPack) IsEmpty() bool {
return len(opp.Operations) == 0
}
// IsValid tell if the OperationPack is considered valid
func (opp *OperationPack) Validate() error {
if opp.IsEmpty() {
return fmt.Errorf("empty")
}
for _, op := range opp.Operations {
if err := op.Validate(); err != nil {
return errors.Wrap(err, "op")
}
}
return nil
}
// Write will serialize and store the OperationPack as a git blob and return
// its hash
func (opp *OperationPack) Write(repo repository.ClockedRepo) (repository.Hash, error) {
// make sure we don't write invalid data
err := opp.Validate()
if err != nil {
return "", errors.Wrap(err, "validation error")
}
// First, make sure that all the identities are properly Commit as well
// TODO: this might be downgraded to "make sure it exist in git" but then, what make
// sure no data is lost on identities ?
for _, op := range opp.Operations {
if op.base().Author.NeedCommit() {
return "", fmt.Errorf("identity need commmit")
}
}
data, err := json.Marshal(opp)
if err != nil {
return "", err
}
hash, err := repo.StoreData(data)
if err != nil {
return "", err
}
return hash, nil
}
// Make a deep copy
func (opp *OperationPack) Clone() OperationPack {
clone := OperationPack{
Operations: make([]Operation, len(opp.Operations)),
commitHash: opp.commitHash,
}
for i, op := range opp.Operations {
clone.Operations[i] = op
}
return clone
}
|
