mirror of
https://github.com/woodchen-ink/webp_server_go.git
synced 2025-07-18 13:42:02 +08:00
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>
71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
package helper
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import (
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"encoding/json"
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"net/url"
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"os"
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"path"
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"webp_server_go/config"
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log "github.com/sirupsen/logrus"
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)
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func getId(p string) (string, string, string) {
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var id string
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if config.ProxyMode {
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return HashString(p), "", ""
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}
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parsed, _ := url.Parse(p)
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width := parsed.Query().Get("width")
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height := parsed.Query().Get("height")
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// santizedPath will be /webp_server.jpg?width=200\u0026height= in local mode when requesting /webp_server.jpg?width=200
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// santizedPath will be https://docs.webp.sh/images/webp_server.jpg?width=400 in proxy mode when requesting /images/webp_server.jpg?width=400 with IMG_PATH = https://docs.webp.sh
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santizedPath := parsed.Path + "?width=" + width + "&height=" + height
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id = HashString(santizedPath)
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return id, path.Join(config.Config.ImgPath, parsed.Path), santizedPath
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}
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func ReadMetadata(p, etag string, subdir string) config.MetaFile {
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// try to read metadata, if we can't read, create one
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var metadata config.MetaFile
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var id, _, _ = getId(p)
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buf, err := os.ReadFile(path.Join(config.Metadata, subdir, id+".json"))
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if err != nil {
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log.Warnf("can't read metadata: %s", err)
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WriteMetadata(p, etag, subdir)
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return ReadMetadata(p, etag, subdir)
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}
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err = json.Unmarshal(buf, &metadata)
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if err != nil {
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log.Warnf("unmarshal metadata error, possible corrupt file, re-building...: %s", err)
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WriteMetadata(p, etag, subdir)
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return ReadMetadata(p, etag, subdir)
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}
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return metadata
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}
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func WriteMetadata(p, etag string, subdir string) config.MetaFile {
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_ = os.MkdirAll(path.Join(config.Metadata, subdir), 0755)
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var id, filepath, sant = getId(p)
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var data = config.MetaFile{
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Id: id,
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}
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if config.ProxyMode {
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data.Path = p
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data.Checksum = HashString(etag)
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} else {
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data.Path = sant
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data.Checksum = HashFile(filepath)
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}
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buf, _ := json.Marshal(data)
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_ = os.WriteFile(path.Join(config.Metadata, subdir, data.Id+".json"), buf, 0644)
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return data
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}
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