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package main
import (
"flag"
"html/template"
"log"
"net/http"
"os"
"strings"
"time"
"github.com/BurntSushi/toml"
)
func main() {
if err := run(); err != nil {
log.Fatal(err)
}
}
type duration struct {
time.Duration
}
func (d *duration) UnmarshalText(text []byte) error {
var err error
d.Duration, err = time.ParseDuration(string(text))
return err
}
type options struct {
BindAddress string `toml:"bind_address"`
CacheExpiry duration `toml:"cache_expiry"`
UpstreamTimeout duration `toml:"upstream_timeout"`
SourcehutUsername string `toml:"srht_username"`
SourcehutToken string `toml:"srht_token"`
GithubUsername string `toml:"github_username"`
GithubToken string `toml:"github_token"`
CanonicalPrefix string `toml:"canonical_prefix"`
}
func run() error {
cfgPath := flag.String("c", "", "path to configuration file")
flag.Parse()
if cfgPath == nil || *cfgPath == "" {
flag.Usage()
os.Exit(1)
}
var opts options
if _, err := toml.DecodeFile(*cfgPath, &opts); err != nil {
return err
}
log.Printf("caches expire after %s", opts.CacheExpiry.Duration)
log.Printf("upstream reqs time out after %s", opts.UpstreamTimeout.Duration)
cache := &PackageCache{
CanonicalPrefix: opts.CanonicalPrefix,
ExpireAfter: opts.CacheExpiry.Duration,
UpstreamTimeout: opts.UpstreamTimeout.Duration,
Logger: log.New(os.Stdout, "", log.LstdFlags),
Hosts: []RepoHost{
Sourcehut{Username: opts.SourcehutUsername, Token: opts.SourcehutToken},
Github{Username: opts.GithubUsername, Token: opts.GithubToken},
},
}
handler := handlePackage(cache)
log.Printf("starting server to listen on %s...", opts.BindAddress)
return http.ListenAndServe(opts.BindAddress, handler)
}
func handlePackage(pkgs *PackageCache) http.HandlerFunc {
tmpl, err := template.New("package").Parse(`<!DOCTYPE html>
<html>
<head>
<meta name="go-import" content="{{ .Name }} git {{ .Repo }}">
</head>
<body>
<h1>{{ .Name }}</h1>
<ul>
<li><a href="https://godoc.org/{{ .Name }}">Godoc</a></li>
<li><a href="{{ .Repo }}">Code</a></li>
</ul>
</body>
</html>`)
if err != nil {
return nil
}
return func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodGet {
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte(http.StatusText(http.StatusBadRequest)))
return
}
parts := strings.SplitN(r.URL.Path[1:], "/", 2)
pkg, ok := pkgs.Get(r.Context(), parts[0])
if !ok {
w.WriteHeader(http.StatusNotFound)
w.Write([]byte(http.StatusText(http.StatusNotFound)))
return
}
log.Printf("pkg: %v", pkg)
tmpl.Execute(w, pkg)
}
}
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