forked from crosbymichael/dockersql
/
main.go
132 lines (121 loc) · 2.5 KB
/
main.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
package main
import (
"database/sql"
"os"
"strings"
ln "github.com/GeertJohan/go.linenoise"
"github.com/Sirupsen/logrus"
"github.com/codegangsta/cli"
_ "github.com/mattn/go-sqlite3"
"github.com/samalba/dockerclient"
)
var (
logger = logrus.New()
globalFlags = []cli.Flag{
cli.BoolFlag{Name: "debug", Usage: "enabled debug output for the logs"},
cli.StringFlag{Name: "docker", Value: "unix:///var/run/docker.sock", Usage: "url to your docker daemon endpoint"},
}
)
func preload(context *cli.Context) error {
if context.GlobalBool("debug") {
logger.Level = logrus.DebugLevel
}
return nil
}
func loadDatabase(context *cli.Context) (*sql.DB, error) {
client, err := dockerclient.NewDockerClient(context.GlobalString("docker"), nil)
if err != nil {
logger.Fatal(err)
}
db, err := sql.Open("sqlite3", ":memory:")
if err != nil {
return nil, err
}
if err := loadContainers(client, db); err != nil {
db.Close()
return nil, err
}
if err := loadImages(client, db); err != nil {
db.Close()
return nil, err
}
return db, nil
}
var completions = []string{
"select",
"where",
"from",
"containers",
"images",
}
// only complete on the last full word of the completion
func completion(input string) []string {
var (
out []string
parts = strings.Split(input, " ")
lower = strings.ToLower(parts[len(parts)-1])
l = len(lower)
)
for _, c := range completions {
if len(c) < l {
continue
}
if strings.HasPrefix(c, lower) {
if len(parts) == 1 {
out = append(out, c)
} else {
parts[len(parts)-1] = c
out = append(out, strings.Join(parts, " "))
}
}
}
return out
}
func mainAction(context *cli.Context) {
db, err := loadDatabase(context)
if err != nil {
logger.Fatal(err)
}
defer db.Close()
ln.SetMultiline(true)
ln.SetCompletionHandler(completion)
for {
query, err := ln.Line("> ")
if err != nil {
if err != ln.KillSignalError {
logger.Error(err)
}
return
}
if query == "" {
continue
}
if err := ln.AddHistory(query); err != nil {
logger.Error(err)
}
rows, err := db.Query(query)
if err != nil {
logger.Warn(err)
continue
}
if err := DisplayResults(rows); err != nil {
db.Close()
logger.Fatal(err)
}
}
}
func prompt() {
ln.Line("> ")
}
func main() {
app := cli.NewApp()
app.Name = "dockersql"
app.Author = "@crosbymichael"
app.Usage = "query your dockers with SQL"
app.Flags = globalFlags
app.Before = preload
app.Action = mainAction
if err := app.Run(os.Args); err != nil {
logger.Fatal(err)
}
}