-
Notifications
You must be signed in to change notification settings - Fork 0
/
gomvn.go
175 lines (149 loc) · 3.68 KB
/
gomvn.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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
package main
import (
"flag"
"fmt"
"io"
"net/http"
"net/url"
"os"
"path"
"strings"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/ec2metadata"
"github.com/aws/aws-sdk-go/aws/endpoints"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
mvn "github.com/navdeepsekhon/go-mvn-dl/download"
)
var (
flagMvnServer string
flagOutputDir string
flagPrintOnly bool
flagQuite bool
)
func log(l string) {
if !flagQuite {
fmt.Println(l)
}
}
func isS3Link(input string) (bool, *url.URL) {
u, _ := url.Parse(input)
return strings.ToLower(u.Scheme) == "s3", u
}
func s3Download(inputUrl, user, pwd string) (*http.Response, error) {
isS3, u := isS3Link(inputUrl)
if !isS3 {
return nil, fmt.Errorf("not a s3 url")
}
sess := session.Must(session.NewSession())
// get region
ec2meta := ec2metadata.New(sess)
region, err := ec2meta.Region()
if err != nil {
region = endpoints.ApSoutheast1RegionID
}
// fetch data from s3
s3client := s3.New(sess, aws.NewConfig().WithRegion(region))
input := &s3.GetObjectInput{
Bucket: aws.String(u.Host),
Key: aws.String(u.Path[1:]),
}
output, err := s3client.GetObject(input)
if err != nil {
return nil, err
}
resp := &http.Response{
StatusCode: 200,
ContentLength: aws.Int64Value(output.ContentLength),
Body: output.Body,
}
return resp, nil
}
func httpDownload(url, user, pwd string) (*http.Response, error) {
if user != "" && pwd != "" {
client := &http.Client{}
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
req.SetBasicAuth(user, pwd)
return client.Do(req)
}
return http.Get(url)
}
func main() {
pwd, err := os.Getwd()
if err != nil {
os.Exit(127)
}
flag.StringVar(&flagMvnServer, "mvn-server", "https://repo1.maven.org/maven2/", "Custom maven server")
flag.StringVar(&flagOutputDir, "output-dir", pwd, "Directory to save downloaded files")
flag.BoolVar(&flagPrintOnly, "print-only", false, "Only print paths of downloaded files")
flag.BoolVar(&flagQuite, "quite", false, "Do not output logs")
flag.Parse()
// ). check mvn server input
if !strings.HasSuffix(flagMvnServer, "/") {
flagMvnServer = flagMvnServer + "/"
}
// ). collect all coordinates into artifacts
coordinates := flag.Args()
artifacts := make([]*mvn.Artifact, 0, 3)
for _, c := range coordinates {
arti, err := mvn.ParseName(c)
if err != nil {
log(fmt.Sprintf("invalid coordinate -> %s", c))
continue
}
arti.RepositoryUrl = flagMvnServer
artifacts = append(artifacts, &arti)
}
if len(artifacts) <= 0 {
log("there is no coordinate to handle")
os.Exit(0)
}
// ). check if should use s3 downloader
useS3, _ := isS3Link(flagMvnServer)
// ). handle each artifact
for _, a := range artifacts {
// choose downloader
if useS3 {
a.Downloader = s3Download
} else {
a.Downloader = httpDownload
}
// prepare download url
finalUrl, err := mvn.ArtifactUrl(*a)
if err != nil {
log(fmt.Sprintf("meet error -> %s", err))
continue
}
if flagPrintOnly {
fmt.Println(finalUrl)
continue
}
// prepare output filepath
filename := mvn.FileName(*a)
filepath := path.Join(flagOutputDir, filename)
out, err := os.Create(filepath)
if err != nil {
log(fmt.Sprintf("meet error -> %s", err))
continue
}
defer out.Close()
// do download
resp, err := a.Downloader(finalUrl, a.RepoUser, a.RepoPassword)
if err != nil {
log(fmt.Sprintf("meet error -> %s", err))
continue
}
defer resp.Body.Close()
// write to file
_, err = io.Copy(out, resp.Body)
if err != nil {
log(fmt.Sprintf("meet error -> %s", err))
continue
}
log(fmt.Sprintf("finish download -> %s", finalUrl))
}
log("done!")
}