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
|
// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package code
import (
"context"
"strconv"
"strings"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/indexer/code/internal"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
)
func getDefaultBranchSha(ctx context.Context, repo *repo_model.Repository) (string, error) {
stdout, _, err := git.NewCommand(ctx, "show-ref", "-s").AddDynamicArguments(git.BranchPrefix + repo.DefaultBranch).RunStdString(&git.RunOpts{Dir: repo.RepoPath()})
if err != nil {
return "", err
}
return strings.TrimSpace(stdout), nil
}
// getRepoChanges returns changes to repo since last indexer update
func getRepoChanges(ctx context.Context, repo *repo_model.Repository, revision string) (*internal.RepoChanges, error) {
status, err := repo_model.GetIndexerStatus(ctx, repo, repo_model.RepoIndexerTypeCode)
if err != nil {
return nil, err
}
needGenesis := len(status.CommitSha) == 0
if !needGenesis {
hasAncestorCmd := git.NewCommand(ctx, "merge-base").AddDynamicArguments(status.CommitSha, revision)
stdout, _, _ := hasAncestorCmd.RunStdString(&git.RunOpts{Dir: repo.RepoPath()})
needGenesis = len(stdout) == 0
}
if needGenesis {
return genesisChanges(ctx, repo, revision)
}
return nonGenesisChanges(ctx, repo, revision)
}
func isIndexable(entry *git.TreeEntry) bool {
if !entry.IsRegular() && !entry.IsExecutable() {
return false
}
name := strings.ToLower(entry.Name())
for _, g := range setting.Indexer.ExcludePatterns {
if g.Match(name) {
return false
}
}
for _, g := range setting.Indexer.IncludePatterns {
if g.Match(name) {
return true
}
}
return len(setting.Indexer.IncludePatterns) == 0
}
// parseGitLsTreeOutput parses the output of a `git ls-tree -r --full-name` command
func parseGitLsTreeOutput(stdout []byte) ([]internal.FileUpdate, error) {
entries, err := git.ParseTreeEntries(stdout)
if err != nil {
return nil, err
}
idxCount := 0
updates := make([]internal.FileUpdate, len(entries))
for _, entry := range entries {
if isIndexable(entry) {
updates[idxCount] = internal.FileUpdate{
Filename: entry.Name(),
BlobSha: entry.ID.String(),
Size: entry.Size(),
Sized: true,
}
idxCount++
}
}
return updates[:idxCount], nil
}
// genesisChanges get changes to add repo to the indexer for the first time
func genesisChanges(ctx context.Context, repo *repo_model.Repository, revision string) (*internal.RepoChanges, error) {
var changes internal.RepoChanges
stdout, _, runErr := git.NewCommand(ctx, "ls-tree", "--full-tree", "-l", "-r").AddDynamicArguments(revision).RunStdBytes(&git.RunOpts{Dir: repo.RepoPath()})
if runErr != nil {
return nil, runErr
}
var err error
changes.Updates, err = parseGitLsTreeOutput(stdout)
return &changes, err
}
// nonGenesisChanges get changes since the previous indexer update
func nonGenesisChanges(ctx context.Context, repo *repo_model.Repository, revision string) (*internal.RepoChanges, error) {
diffCmd := git.NewCommand(ctx, "diff", "--name-status").AddDynamicArguments(repo.CodeIndexerStatus.CommitSha, revision)
stdout, _, runErr := diffCmd.RunStdString(&git.RunOpts{Dir: repo.RepoPath()})
if runErr != nil {
// previous commit sha may have been removed by a force push, so
// try rebuilding from scratch
log.Warn("git diff: %v", runErr)
if err := (*globalIndexer.Load()).Delete(ctx, repo.ID); err != nil {
return nil, err
}
return genesisChanges(ctx, repo, revision)
}
var changes internal.RepoChanges
var err error
updatedFilenames := make([]string, 0, 10)
updateChanges := func() error {
cmd := git.NewCommand(ctx, "ls-tree", "--full-tree", "-l").AddDynamicArguments(revision).
AddDashesAndList(updatedFilenames...)
lsTreeStdout, _, err := cmd.RunStdBytes(&git.RunOpts{Dir: repo.RepoPath()})
if err != nil {
return err
}
updates, err1 := parseGitLsTreeOutput(lsTreeStdout)
if err1 != nil {
return err1
}
changes.Updates = append(changes.Updates, updates...)
return nil
}
lines := strings.Split(stdout, "\n")
for _, line := range lines {
line = strings.TrimSpace(line)
if len(line) == 0 {
continue
}
fields := strings.Split(line, "\t")
if len(fields) < 2 {
log.Warn("Unparsable output for diff --name-status: `%s`)", line)
continue
}
filename := fields[1]
if len(filename) == 0 {
continue
} else if filename[0] == '"' {
filename, err = strconv.Unquote(filename)
if err != nil {
return nil, err
}
}
switch status := fields[0][0]; status {
case 'M', 'A':
updatedFilenames = append(updatedFilenames, filename)
case 'D':
changes.RemovedFilenames = append(changes.RemovedFilenames, filename)
case 'R', 'C':
if len(fields) < 3 {
log.Warn("Unparsable output for diff --name-status: `%s`)", line)
continue
}
dest := fields[2]
if len(dest) == 0 {
log.Warn("Unparsable output for diff --name-status: `%s`)", line)
continue
}
if dest[0] == '"' {
dest, err = strconv.Unquote(dest)
if err != nil {
return nil, err
}
}
if status == 'R' {
changes.RemovedFilenames = append(changes.RemovedFilenames, filename)
}
updatedFilenames = append(updatedFilenames, dest)
default:
log.Warn("Unrecognized status: %c (line=%s)", status, line)
}
// According to https://learn.microsoft.com/en-us/troubleshoot/windows-client/shell-experience/command-line-string-limitation#more-information
// the command line length should less than 8191 characters, assume filepath is 256, then 8191/256 = 31, so we use 30
if len(updatedFilenames) >= 30 {
if err := updateChanges(); err != nil {
return nil, err
}
updatedFilenames = updatedFilenames[0:0]
}
}
if len(updatedFilenames) > 0 {
if err := updateChanges(); err != nil {
return nil, err
}
}
return &changes, err
}
|
