Something went wrong. Try again.
Monorepo for Tangled
Something went wrong. Try again.
3.5 kB · 115 lines
Go
at ci
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116package xrpc
import ( "compress/gzip" "fmt" "net/http" "net/url" "strings"
"github.com/bluesky-social/indigo/atproto/atclient" "github.com/bluesky-social/indigo/atproto/syntax" "github.com/go-git/go-git/v5/plumbing" "tangled.org/core/api/tangled" "tangled.org/core/knotmirror/db" "tangled.org/core/knotserver/git")
func (x *Xrpc) GetArchive(w http.ResponseWriter, r *http.Request) { var ( repoQuery = r.URL.Query().Get("repo") ref = r.URL.Query().Get("ref") format = r.URL.Query().Get("format") prefix = r.URL.Query().Get("prefix") )
repo, err := syntax.ParseDID(repoQuery) if err != nil { writeJson(w, http.StatusBadRequest, atclient.ErrorBody{Name: "BadRequest", Message: fmt.Sprintf("repo parameter invalid: %s", repoQuery)}) return }
if format != "tar.gz" { writeJson(w, http.StatusBadRequest, atclient.ErrorBody{Name: "BadRequest", Message: "only tar.gz format is supported"}) return } if format == "" { format = "tar.gz" }
l := x.logger.With("repo", repo, "ref", ref, "format", format, "prefix", prefix) ctx := r.Context()
repoPath, err := x.makeRepoPath(ctx, repo) if err != nil { l.Warn("local mirror failed, trying proxy", "err", err) if x.proxyToKnot(w, r, repo) { return } writeJson(w, http.StatusInternalServerError, atclient.ErrorBody{Name: "InternalServerError", Message: "failed to resolve repo"}) return }
gr, err := git.Open(repoPath, ref) if err != nil { l.Warn("local mirror failed, trying proxy", "err", err) if x.proxyToKnot(w, r, repo) { return } writeJson(w, http.StatusInternalServerError, atclient.ErrorBody{Name: "InternalServerError", Message: "failed to open git repo"}) return }
repoName, err := func() (string, error) { r, err := db.GetRepoByRepoDid(ctx, x.db, repo) if err != nil { return "", err } if r == nil { return "", fmt.Errorf("repo not found: %s", repo) } return r.Name, nil }() if err != nil { l.Warn("local mirror failed, trying proxy", "err", err) if x.proxyToKnot(w, r, repo) { return } writeJson(w, http.StatusInternalServerError, atclient.ErrorBody{Name: "InternalServerError", Message: "failed to retrieve repo name"}) return }
safeRefFilename := strings.ReplaceAll(plumbing.ReferenceName(ref).Short(), "/", "-") immutableLink := func() string { params := url.Values{} params.Set("repo", repo.String()) params.Set("ref", gr.Hash().String()) params.Set("format", format) params.Set("prefix", prefix) return fmt.Sprintf("%s/xrpc/%s?%s", x.cfg.BaseUrl(), tangled.GitTempGetArchiveNSID, params.Encode()) }()
filename := fmt.Sprintf("%s-%s.tar.gz", repoName, safeRefFilename) w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename)) w.Header().Set("Content-Type", "application/gzip") w.Header().Set("Link", fmt.Sprintf("<%s>; rel=\"immutable\"", immutableLink))
gw := gzip.NewWriter(w) defer gw.Close()
if err := gr.WriteTar(gw, prefix); err != nil { // once we start writing to the body we can't report error anymore // so we are only left with logging the error l.Error("writing tar file", "err", err.Error()) w.WriteHeader(http.StatusInternalServerError) return }
if err := gw.Flush(); err != nil { // once we start writing to the body we can't report error anymore // so we are only left with logging the error l.Error("flushing", "err", err.Error()) w.WriteHeader(http.StatusInternalServerError) return }}