Alexander "PapaTutuWawa
b2a27cad72
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ci/woodpecker/push/woodpecker Pipeline was successful
131 lines
3.2 KiB
Go
131 lines
3.2 KiB
Go
package pages
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import (
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"mime"
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"net/http"
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"strconv"
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"strings"
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"time"
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"git.polynom.me/rio/internal/constants"
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"git.polynom.me/rio/internal/context"
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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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var (
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pageCache = cache.New(6*time.Hour, 1*time.Hour)
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)
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type PageContentCache struct {
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Content []byte
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mimeType string
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RequestedAt time.Time
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}
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func makePageContentCacheEntry(username, path string) string {
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return username + ":" + path
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}
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func addHeaders(repoInfo *context.RepositoryInformation, contentType string, contentLength int, w http.ResponseWriter) {
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// Always set a content type
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if strings.Trim(contentType, " ") == "" {
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w.Header().Set("Content-Type", "application/octet-stream")
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} else {
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w.Header().Set("Content-Type", contentType)
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}
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w.Header().Set("X-Content-Type-Options", "nosniff")
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w.Header().Set("Strict-Transport-Security", "max-age=31536000")
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w.Header().Set("Content-Length", strconv.Itoa(contentLength))
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if repoInfo != nil {
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for key, value := range repoInfo.Headers {
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w.Header().Set(key, value)
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}
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}
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}
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func ServeFile(context *context.Context) {
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// Strip away a starting / as it messes with Gitea
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path := context.Path
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if path[:1] == "/" {
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path = path[1:]
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}
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key := makePageContentCacheEntry(context.Username, path)
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entry, found := pageCache.Get(key)
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var content []byte
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var mimeType string
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var err error
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var since *time.Time = nil
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if found {
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log.Debugf("Returning %s from cache", path)
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content = entry.(PageContentCache).Content
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mimeType = entry.(PageContentCache).mimeType
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sinceRaw := entry.(PageContentCache).RequestedAt
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since = &sinceRaw
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}
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content, changed, err := context.Global.Gitea.GetFile(
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context.Username,
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context.Reponame,
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constants.PagesBranch,
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path,
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since,
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)
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repoInfo := context.Global.Cache.GetRepositoryInformation(
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context.Username,
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context.Reponame,
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)
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if err != nil {
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if !found {
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log.Errorf("Failed to get file %s/%s/%s (%s)", context.Username, context.Reponame, path, err)
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addHeaders(repoInfo, "text/html", 0, context.Writer)
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context.Writer.WriteHeader(404)
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} else {
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log.Debugf("Request failed but page %s is cached in memory", path)
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addHeaders(repoInfo, mimeType, len(content), context.Writer)
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context.Writer.WriteHeader(200)
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context.Writer.Write(content)
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}
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return
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}
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if found && !changed {
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log.Debugf("Page %s is unchanged and cached in memory", path)
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addHeaders(repoInfo, mimeType, len(content), context.Writer)
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context.Writer.WriteHeader(200)
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context.Writer.Write(content)
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return
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}
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pathParts := strings.Split(path, ".")
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ext := pathParts[len(pathParts)-1]
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mimeType = mime.TypeByExtension("." + ext)
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now := time.Now()
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pageCache.Set(
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key,
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PageContentCache{
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content,
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mimeType,
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now,
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},
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cache.DefaultExpiration,
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)
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log.Debugf("Page %s requested from Gitea and cached in memory at %v", path, now)
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addHeaders(repoInfo, mimeType, len(content), context.Writer)
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context.Writer.WriteHeader(200)
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context.Writer.Write(content)
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// Tell Loki about if, if desired
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if context.Global.MetricConfig.ShouldSendMetrics(path, context.UserAgent, context.DNT, context.GPC) {
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context.Global.MetricConfig.SendMetricPing(context.Domain, path, context.Referrer)
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}
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}
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