-
Notifications
You must be signed in to change notification settings - Fork 0
/
util.go
119 lines (97 loc) · 2.52 KB
/
util.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
package main
import (
"bufio"
"bytes"
"errors"
"fmt"
"go/format"
"os"
"regexp"
"strconv"
"text/template"
"github.com/golang/protobuf/proto"
"github.com/yoozoo/protocli/generator/data"
"github.com/yoozoo/protomq/mqcommon"
"github.com/yoozoo/protomq/tpl"
)
var (
rgxSyntaxError = regexp.MustCompile(`(\d+):\d+: `)
debugTpl = os.Getenv("debugTpl") == "true"
)
var util = &_util{}
type _util struct{}
func (g *_util) getTpl(path string) *template.Template {
var err error
tpl := template.New("tpl")
tplStr := g.LoadTpl(path)
result, err := tpl.Parse(tplStr)
if err != nil {
g.Die(err)
}
return result
}
func (g *_util) formatBuffer(buf *bytes.Buffer) string {
output, err := format.Source(buf.Bytes())
if err == nil {
return string(output)
}
matches := rgxSyntaxError.FindStringSubmatch(err.Error())
if matches == nil {
util.Die(errors.New("failed to format template"))
}
lineNum, _ := strconv.Atoi(matches[1])
scanner := bufio.NewScanner(buf)
errBuf := &bytes.Buffer{}
line := 1
for ; scanner.Scan(); line++ {
if delta := line - lineNum; delta < -5 || delta > 5 {
continue
}
if line == lineNum {
errBuf.WriteString(">>>> ")
} else {
fmt.Fprintf(errBuf, "% 4d ", line)
}
errBuf.Write(scanner.Bytes())
errBuf.WriteByte('\n')
}
util.Die(fmt.Errorf("failed to format template\n\n%s", errBuf.Bytes()))
return ""
}
// Die prints error and exit
func (g *_util) Die(err error) {
fmt.Fprintf(os.Stderr, "Error: %s\n", err)
os.Exit(1)
}
// LoadTpl is the function to load template file as string
// It loads file content from esc embed by default
// Set environment variable debugTpl to "true" to load template from disk directly
func (g *_util) LoadTpl(tplPath string) string {
//useLocal is true, the filesystem's contents are instead used.
return tpl.FSMustString(debugTpl, tplPath)
}
// RetriveTopics will return error if there is no topic
// or there are repeated topics
func (g *_util) RetriveTopics(messages []*data.MessageData) (map[string]string, error) {
topics := make(map[string]bool, 0)
result := make(map[string]string, 0)
for _, msg := range messages {
m, _ := data.GetMessageProtoAndFile(msg.Name)
opt := m.Proto.GetOptions()
val, err := proto.GetExtension(opt, mqcommon.E_Topic)
if err != nil {
continue
}
v := val.(*string)
_, found := topics[*v]
if found {
return nil, fmt.Errorf("repeated topic: %s", *v)
}
topics[*v] = true
result[msg.Name] = *v
}
if len(topics) <= 0 {
return nil, fmt.Errorf("no topic found")
}
return result, nil
}