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117 lines
2.8 KiB
Go
117 lines
2.8 KiB
Go
package main
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import (
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"context"
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"embed"
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"encoding/json"
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"fmt"
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"net"
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"net/http"
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"os"
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"time"
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"golang.org/x/mod/module"
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"golang.org/x/mod/zip"
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"orel.li/modrn/internal/ref"
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)
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//go:embed meta
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var content embed.FS
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type handler struct {
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path ref.Ref[string]
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index ref.Ref[pathArg]
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}
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func (h handler) run() error {
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addr, err := net.ResolveUnixAddr("unix", h.path.Val())
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if err != nil {
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return fmt.Errorf("bad listen address: %w", err)
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}
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l, err := net.ListenUnix("unix", addr)
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if err != nil {
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return fmt.Errorf("unable to open unix socket: %w", err)
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}
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os.Chmod(h.path.Val(), 0777)
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server := http.Server{
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Handler: h,
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}
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onShutdown(func() error {
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log_info.Print("shutting down http server")
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return server.Shutdown(context.TODO())
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})
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// ??
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start := time.Now()
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err = server.Serve(l)
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if err != nil {
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// I dunno how to check for the right error, offhand
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if time.Since(start) < time.Second {
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return fmt.Errorf("unable to start server: %v", err)
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}
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}
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log_info.Printf("http serve result: %v", err)
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return nil
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}
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func (h handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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log_info.Printf("%s %s %s", r.Method, r.Host, r.URL.String())
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switch r.URL.Path {
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case "/fart":
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// Step 1: a request comes in at orel.li. This page contains a meta tag
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// indicating where the package contents may be found, and which backend
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// is serving the package.
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serveFile(w, "meta/fart/root.html")
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case "/modules/orel.li/fart/@v/list":
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// Step 2: list all of the versions for the package. Versions may be
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// available but unlisted.
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serveFile(w, "meta/fart/version-list")
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case "/modules/orel.li/fart/@latest",
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"/modules/orel.li/fart/@v/v0.0.3.info":
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// Step 3: get info for the version, which is just a timestamp at the
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// moment.
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e := json.NewEncoder(w)
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e.Encode(versionInfo{
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Version: "v0.0.3",
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Time: time.Now(),
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})
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case "/modules/orel.li/fart/@v/v0.0.3.mod":
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// Step 4: retrieve the modfile for the package, informing go mod of
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// any transitive dependencies.
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serveFile(w, "meta/fart/modfile")
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case "/modules/orel.li/fart/@v/v0.0.3.zip":
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// Step 5: retrieve the source code contents for a package, as a
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// specially-formatted zip file.
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err := zip.CreateFromDir(w, module.Version{
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Path: "orel.li/fart",
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Version: "v0.0.3",
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}, "/home/jorelli/modularium/modules/orel.li/fart")
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if err != nil {
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log_error.Printf("zip error: %v", err)
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}
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case "/":
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w.WriteHeader(http.StatusOK)
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default:
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w.WriteHeader(http.StatusNotFound)
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w.Write([]byte("not found"))
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}
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}
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func serveFile(w http.ResponseWriter, path string) {
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b, err := content.ReadFile(path)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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fmt.Fprintf(w, err.Error())
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}
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w.Write(b)
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}
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type versionInfo struct {
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Version string // version string
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Time time.Time // commit time
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}
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