mirror of
https://github.com/woodchen-ink/webp_server_go.git
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4003b03022
* Fix: h2non/filetype upgraded to support avif signatures * Fix: make clean updated to include test/output dirs * Feature: multi-backend support via IMG_MAP config key as described in #217 * feat: implement both local and remote (proxyMode) mappings for multi-backend * Feature: multi-backend support via IMG_MAP config key as described in #217 * fix: go-is-svg should be direct import * fix: imgMap paths are relative to CWD * feature: IMG_MAP is parsed on start --------- Co-authored-by: Nova Kwok <n0vad3v@riseup.net>
136 lines
3.7 KiB
Go
136 lines
3.7 KiB
Go
package config
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import (
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"encoding/json"
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"flag"
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"os"
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"regexp"
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"runtime"
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"strings"
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"time"
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"github.com/patrickmn/go-cache"
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log "github.com/sirupsen/logrus"
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)
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const (
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TimeDateFormat = "2006-01-02 15:04:05"
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FiberLogFormat = "${ip} - [${time}] ${method} ${url} ${status} ${referer} ${ua}\n"
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WebpMax = 16383
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AvifMax = 65536
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HttpRegexp = `^https?://`
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SampleConfig = `
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{
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"HOST": "127.0.0.1",
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"PORT": "3333",
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"QUALITY": "80",
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"IMG_PATH": "./pics",
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"EXHAUST_PATH": "./exhaust",
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"IMG_MAP": {},
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"ALLOWED_TYPES": ["jpg","png","jpeg","bmp","svg"],
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"ENABLE_AVIF": false,
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"ENABLE_EXTRA_PARAMS": false
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}`
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SampleSystemd = `
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[Unit]
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Description=WebP Server Go
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Documentation=https://github.com/webp-sh/webp_server_go
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After=nginx.target
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[Service]
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Type=simple
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StandardError=journal
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WorkingDirectory=/opt/webps
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ExecStart=/opt/webps/webp-server --config /opt/webps/config.json
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Restart=always
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RestartSec=3s
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[Install]
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WantedBy=multi-user.target`
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)
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var (
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ConfigPath string
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Jobs int
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DumpSystemd bool
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DumpConfig bool
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ShowVersion bool
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ProxyMode bool
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Prefetch bool
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Config jsonFile
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Version = "0.9.8"
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WriteLock = cache.New(5*time.Minute, 10*time.Minute)
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RemoteRaw = "./remote-raw"
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Metadata = "./metadata"
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LocalHostAlias = "local"
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)
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type MetaFile struct {
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Id string `json:"id"` // hash of below path️, also json file name id.webp
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Path string `json:"path"` // local: path with width and height, proxy: full url
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Checksum string `json:"checksum"` // hash of original file or hash(etag). Use this to identify changes
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}
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type jsonFile struct {
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Host string `json:"HOST"`
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Port string `json:"PORT"`
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ImgPath string `json:"IMG_PATH"`
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Quality int `json:"QUALITY,string"`
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AllowedTypes []string `json:"ALLOWED_TYPES"`
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ImageMap map[string]string `json:"IMG_MAP"`
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ExhaustPath string `json:"EXHAUST_PATH"`
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EnableAVIF bool `json:"ENABLE_AVIF"`
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EnableExtraParams bool `json:"ENABLE_EXTRA_PARAMS"`
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}
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func init() {
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flag.StringVar(&ConfigPath, "config", "config.json", "/path/to/config.json. (Default: ./config.json)")
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flag.BoolVar(&Prefetch, "prefetch", false, "Prefetch and convert image to webp")
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flag.IntVar(&Jobs, "jobs", runtime.NumCPU(), "Prefetch thread, default is all.")
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flag.BoolVar(&DumpConfig, "dump-config", false, "Print sample config.json")
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flag.BoolVar(&DumpSystemd, "dump-systemd", false, "Print sample systemd service file.")
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flag.BoolVar(&ShowVersion, "V", false, "Show version information.")
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}
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func LoadConfig() {
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jsonObject, err := os.Open(ConfigPath)
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if err != nil {
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log.Fatal(err)
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}
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decoder := json.NewDecoder(jsonObject)
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_ = decoder.Decode(&Config)
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_ = jsonObject.Close()
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switchProxyMode()
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Config.ImageMap = parseImgMap(Config.ImageMap)
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}
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func parseImgMap(imgMap map[string]string) map[string]string {
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var parsedImgMap = map[string]string{}
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httpRegexpMatcher := regexp.MustCompile(HttpRegexp)
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for uriMap, uriMapTarget := range imgMap {
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if httpRegexpMatcher.Match([]byte(uriMap)) || strings.HasPrefix(uriMap, "/") {
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// Valid
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parsedImgMap[uriMap] = uriMapTarget
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} else {
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// Invalid
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log.Warnf("IMG_MAP key '%s' does matches '%s' or starts with '/' - skipped", uriMap, HttpRegexp)
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}
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}
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return parsedImgMap
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}
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type ExtraParams struct {
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Width int // in px
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Height int // in px
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}
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func switchProxyMode() {
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matched, _ := regexp.MatchString(HttpRegexp, Config.ImgPath)
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if matched {
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// Enable proxy based on ImgPath should be deprecated in future versions
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log.Warn("Enable proxy based on ImgPath will be deprecated in future versions. Use IMG_MAP config options instead")
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ProxyMode = true
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}
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}
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