forked from abh/cachestatus
-
Notifications
You must be signed in to change notification settings - Fork 1
/
cachestatus.go
231 lines (185 loc) · 4.75 KB
/
cachestatus.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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
package main
import (
"bufio"
"errors"
"flag"
"fmt"
"io"
"log"
"net/http"
"net/url"
"os"
"runtime"
"strings"
"sync"
"time"
)
// ServerName of the current box
var ServerName string
type File struct {
Path string
ChecksumExpected string
Size int64
LastModified time.Time
LastChecked time.Time
Cached bool
}
type FileChannel chan *File
var VERSION string = "1.3"
var (
flagListLocation = flag.String("filelist", "", "URL for filelist or manifest")
flagCreateManifestPath = flag.String("createmanifest", "", "path for manifest to be created")
flagServer = flag.String("server", "localhost", "Server to check")
flagHostname = flag.String("hostname", "", "Host header for checks or source for creating manifest")
flagChecksum = flag.Bool("checksum", false, "Check (or create) checksums")
flagWorkers = flag.Int("workers", 6, "How many concurrent requests to make")
flagVersion = flag.Bool("version", false, "Show version")
flagVerbose = flag.Bool("verbose", false, "Verbose output")
flagPort = flag.String("port", "", "Http server port to listen on")
flagHashFunction = flag.String("hash", "sha256", "hash function, sha256 or crc32")
)
func init() {
log.SetPrefix("cachestatus ")
// log.SetFlags(log.Lmicroseconds | log.Lshortfile)
flag.Parse()
if *flagVersion {
fmt.Println("cachestatus", VERSION)
os.Exit(0)
}
var err error
ServerName, err = os.Hostname()
if err != nil {
log.Fatalln("Could not get hostname", err)
}
ncpus := runtime.NumCPU()
ncpus /= 2
if ncpus > 6 {
ncpus = 6
}
if *flagVerbose {
log.Printf("Using up to %d CPUs for checksum'ing\n", ncpus)
}
runtime.GOMAXPROCS(ncpus)
}
func main() {
if *flagPort != "" {
log.Println("Http Server Mode.")
serverMode()
} else {
log.Println("Command Line Mode.")
commandLineMode()
}
}
func serverMode() {
http.Handle("/cachestatus", new(CacheHandler))
http.ListenAndServe(":"+*flagPort, nil)
}
func commandLineMode() {
if len(*flagListLocation) == 0 {
log.Fatalln("-filelist url option is required")
}
vhost := new(VHost)
vhost.FileListLocation = *flagListLocation
vhost.Hostname = *flagHostname
log.Println("Getting file list")
err := getFileList(vhost)
if err != nil {
log.Fatalln(err)
}
log.Println("Got file list")
workQueue := make(FileChannel)
nworkers := *flagWorkers
status := NewStatusBoard(nworkers)
waitGroup := new(sync.WaitGroup)
w := NewWorkerGroup(vhost, *flagServer, status, workQueue)
w.waitGroup = waitGroup
if *flagChecksum {
w.Options.Checksum = true
}
if len(*flagCreateManifestPath) > 0 {
manifestFile, err := os.Create(*flagCreateManifestPath)
if err != nil {
log.Fatalf("Could not open manifest '%s': %s", *flagCreateManifestPath, err)
}
manifest := CreateManifest(manifestFile)
defer manifest.Close()
w.SetOutput(manifest.in)
}
for n := 0; n < nworkers; n++ {
w.Start()
}
go status.Printer()
for i, _ := range vhost.Files {
// log.Printf("File: %#v\n", file)
workQueue <- vhost.Files[i]
}
waitGroup.Wait()
for n, st := range status.Status {
log.Println(n, st.Path, st.Status, string(st.Mark))
}
for _, path := range status.BadFiles {
fmt.Println(path)
}
log.Println(status.String())
status.Quit()
log.Println("exiting")
}
func openURL(rawurl string) (io.ReadCloser, error) {
u, err := url.Parse(rawurl)
if err != nil {
return nil, fmt.Errorf("Could not parse url '%s': %s", rawurl, err)
}
if u.Scheme == "file" || (u.Scheme == "" && strings.HasPrefix(rawurl, "/")) {
path := rawurl
if len(u.Path) > 0 {
path = u.Path
}
fh, err := os.Open(path)
if err != nil {
return nil, err
}
return fh, nil
}
resp, err := http.Get(u.String())
if err != nil {
return nil, err
}
if resp.StatusCode != 200 {
return nil, fmt.Errorf("Could not get file list '%s': %d", u.String(), resp.StatusCode)
}
return resp.Body, nil
}
func getFileList(vhost *VHost) error {
url := vhost.FileListLocation
body, err := openURL(url)
if err != nil {
return fmt.Errorf("Could not get url %v: %v", url, err)
}
defer body.Close()
if strings.HasSuffix(url, ".json") {
files, err := ReadManifest(body)
if err != nil {
return errors.New(fmt.Sprintf("Error parsing manifest %s: %s", url, err))
}
vhost.Files = files
}
scanner := bufio.NewScanner(body)
for scanner.Scan() {
checksumPath := strings.SplitN(scanner.Text(), " .", 2)
file := new(File)
if len(checksumPath) > 1 {
file.ChecksumExpected = checksumPath[0]
file.Path = checksumPath[1]
} else {
file.Path = checksumPath[0]
}
if len(file.Path) == 0 {
continue
}
vhost.Files = append(vhost.Files, file)
}
if err := scanner.Err(); err != nil {
return err
}
return nil
}