forked from kubernetes-retired/contrib
-
Notifications
You must be signed in to change notification settings - Fork 1
/
path_label.go
156 lines (132 loc) · 3.73 KB
/
path_label.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
/*
Copyright 2015 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package mungers
import (
"bufio"
"fmt"
"os"
"regexp"
"strings"
"k8s.io/contrib/mungegithub/features"
"k8s.io/contrib/mungegithub/github"
"k8s.io/kubernetes/pkg/util/sets"
"github.com/golang/glog"
"github.com/spf13/cobra"
)
var (
_ = fmt.Print
)
const (
botName = "k8s-merge-robot"
jenkinsBotName = "k8s-bot"
)
type labelMap struct {
regexp *regexp.Regexp
label string
}
// PathLabelMunger will add labels to PRs based on what files it modified.
// The mapping of files to labels if provided in a file in --path-label-config
type PathLabelMunger struct {
PathLabelFile string
labelMap []labelMap
allLabels sets.String
}
func init() {
RegisterMungerOrDie(&PathLabelMunger{})
}
// Name is the name usable in --pr-mungers
func (p *PathLabelMunger) Name() string { return "path-label" }
// RequiredFeatures is a slice of 'features' that must be provided
func (p *PathLabelMunger) RequiredFeatures() []string { return []string{} }
// Initialize will initialize the munger
func (p *PathLabelMunger) Initialize(config *github.Config, features *features.Features) error {
allLabels := sets.NewString()
out := []labelMap{}
file := p.PathLabelFile
if len(file) == 0 {
glog.Infof("No --path-label-config= supplied, applying no labels")
return nil
}
fp, err := os.Open(file)
if err != nil {
return err
}
defer fp.Close()
scanner := bufio.NewScanner(fp)
for scanner.Scan() {
line := scanner.Text()
if strings.HasPrefix(line, "#") {
continue
}
if line == "" {
continue
}
fields := strings.Fields(line)
if len(fields) != 2 {
glog.Errorf("Invalid line in path based label munger config %s: %q", file, line)
continue
}
r, err := regexp.Compile(fields[0])
if err != nil {
glog.Errorf("Invalid regexp in label munger config %s: %q", file, fields[0])
continue
}
label := fields[1]
lm := labelMap{
regexp: r,
label: label,
}
out = append(out, lm)
allLabels.Insert(label)
}
p.allLabels = allLabels
p.labelMap = out
return scanner.Err()
}
// EachLoop is called at the start of every munge loop
func (p *PathLabelMunger) EachLoop() error { return nil }
// AddFlags will add any request flags to the cobra `cmd`
func (p *PathLabelMunger) AddFlags(cmd *cobra.Command, config *github.Config) {
cmd.Flags().StringVar(&p.PathLabelFile, "path-label-config", "", "file containing the pathname to label mappings")
}
// Munge is the workhorse the will actually make updates to the PR
func (p *PathLabelMunger) Munge(obj *github.MungeObject) {
if !obj.IsPR() {
return
}
files, err := obj.ListFiles()
if err != nil {
return
}
needsLabels := sets.NewString()
for _, f := range files {
for _, lm := range p.labelMap {
if lm.regexp.MatchString(*f.Filename) {
needsLabels.Insert(lm.label)
}
}
}
// This is all labels on the issue that the path munger controls
hasLabels := obj.LabelSet().Intersection(p.allLabels)
missingLabels := needsLabels.Difference(hasLabels)
if missingLabels.Len() != 0 {
obj.AddLabels(needsLabels.List())
}
extraLabels := hasLabels.Difference(needsLabels)
for _, label := range extraLabels.List() {
creator := obj.LabelCreator(label)
if creator == botName {
obj.RemoveLabel(label)
}
}
}