patch of appview,knotserver: immutable nix flakeref link header · round #2 · pull #741 · tangled.org/core

-41

api/tangled/repoarchive.go

···

       1
       -
       // Code generated by cmd/lexgen (see Makefile's lexgen); DO NOT EDIT.

     

       2
       -
       

     

       3
       -
       package tangled

     

       4
       -
       

     

       5
       -
       // schema: sh.tangled.repo.archive

     

       6
       -
       

     

       7
       -
       import (

     

       8
       -
       	"bytes"

     

       9
       -
       	"context"

     

       10
       -
       

     

       11
       -
       	"github.com/bluesky-social/indigo/lex/util"

     

       12
       -
       )

     

       13
       -
       

     

       14
       -
       const (

     

       15
       -
       	RepoArchiveNSID = "sh.tangled.repo.archive"

     

       16
       -
       )

     

       17
       -
       

     

       18
       -
       // RepoArchive calls the XRPC method "sh.tangled.repo.archive".

     

       19
       -
       //

     

       20
       -
       // format: Archive format

     

       21
       -
       // prefix: Prefix for files in the archive

     

       22
       -
       // ref: Git reference (branch, tag, or commit SHA)

     

       23
       -
       // repo: Repository identifier in format 'did:plc:.../repoName'

     

       24
       -
       func RepoArchive(ctx context.Context, c util.LexClient, format string, prefix string, ref string, repo string) ([]byte, error) {

     

       25
       -
       	buf := new(bytes.Buffer)

     

       26
       -
       

     

       27
       -
       	params := map[string]interface{}{}

     

       28
       -
       	if format != "" {

     

       29
       -
       		params["format"] = format

     

       30
       -
       	}

     

       31
       -
       	if prefix != "" {

     

       32
       -
       		params["prefix"] = prefix

     

       33
       -
       	}

     

       34
       -
       	params["ref"] = ref

     

       35
       -
       	params["repo"] = repo

     

       36
       -
       	if err := c.LexDo(ctx, util.Query, "", "sh.tangled.repo.archive", params, nil, buf); err != nil {

     

       37
       -
       		return nil, err

     

       38
       -
       	}

     

       39
       -
       

     

       40
       -
       	return buf.Bytes(), nil

     

       41
       -
       }

-49

appview/repo/archive.go

···

       1
       -
       package repo

     

       2
       -
       

     

       3
       -
       import (

     

       4
       -
       	"fmt"

     

       5
       -
       	"net/http"

     

       6
       -
       	"net/url"

     

       7
       -
       	"strings"

     

       8
       -
       

     

       9
       -
       	"tangled.org/core/api/tangled"

     

       10
       -
       	xrpcclient "tangled.org/core/appview/xrpcclient"

     

       11
       -
       

     

       12
       -
       	indigoxrpc "github.com/bluesky-social/indigo/xrpc"

     

       13
       -
       	"github.com/go-chi/chi/v5"

     

       14
       -
       	"github.com/go-git/go-git/v5/plumbing"

     

       15
       -
       )

     

       16
       -
       

     

       17
       -
       func (rp *Repo) DownloadArchive(w http.ResponseWriter, r *http.Request) {

     

       18
       -
       	l := rp.logger.With("handler", "DownloadArchive")

     

       19
       -
       	ref := chi.URLParam(r, "ref")

     

       20
       -
       	ref, _ = url.PathUnescape(ref)

     

       21
       -
       	f, err := rp.repoResolver.Resolve(r)

     

       22
       -
       	if err != nil {

     

       23
       -
       		l.Error("failed to get repo and knot", "err", err)

     

       24
       -
       		return

     

       25
       -
       	}

     

       26
       -
       	scheme := "http"

     

       27
       -
       	if !rp.config.Core.Dev {

     

       28
       -
       		scheme = "https"

     

       29
       -
       	}

     

       30
       -
       	host := fmt.Sprintf("%s://%s", scheme, f.Knot)

     

       31
       -
       	xrpcc := &indigoxrpc.Client{

     

       32
       -
       		Host: host,

     

       33
       -
       	}

     

       34
       -
       	repo := fmt.Sprintf("%s/%s", f.OwnerDid(), f.Name)

     

       35
       -
       	archiveBytes, err := tangled.RepoArchive(r.Context(), xrpcc, "tar.gz", "", ref, repo)

     

       36
       -
       	if xrpcerr := xrpcclient.HandleXrpcErr(err); xrpcerr != nil {

     

       37
       -
       		l.Error("failed to call XRPC repo.archive", "err", xrpcerr)

     

       38
       -
       		rp.pages.Error503(w)

     

       39
       -
       		return

     

       40
       -
       	}

     

       41
       -
       	// Set headers for file download, just pass along whatever the knot specifies

     

       42
       -
       	safeRefFilename := strings.ReplaceAll(plumbing.ReferenceName(ref).Short(), "/", "-")

     

       43
       -
       	filename := fmt.Sprintf("%s-%s.tar.gz", f.Name, safeRefFilename)

     

       44
       -
       	w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))

     

       45
       -
       	w.Header().Set("Content-Type", "application/gzip")

     

       46
       -
       	w.Header().Set("Content-Length", fmt.Sprintf("%d", len(archiveBytes)))

     

       47
       -
       	// Write the archive data directly

     

       48
       -
       	w.Write(archiveBytes)

     

       49
       -
       }

-4

appview/repo/router.go

···

       40
        
       	r.Get("/blob/{ref}/*", rp.Blob)

     

       41
        
       	r.Get("/raw/{ref}/*", rp.RepoBlobRaw)

     

       42
        
       

     

       43
       -
       	// intentionally doesn't use /* as this isn't

     

       44
       -
       	// a file path

     

       45
       -
       	r.Get("/archive/{ref}", rp.DownloadArchive)

     

       46
       -
       

     

       47
        
       	r.Route("/fork", func(r chi.Router) {

     

       48
        
       		r.Use(middleware.AuthMiddleware(rp.oauth))

     

       49
        
       		r.Get("/", rp.ForkRepo)

···

       40
        
       	r.Get("/blob/{ref}/*", rp.Blob)

     

       41
        
       	r.Get("/raw/{ref}/*", rp.RepoBlobRaw)

     

       42
        
       

     

       0
        
       
     

       0
        
       
     

       0
        
       
     

       0
        
       
     

       43
        
       	r.Route("/fork", func(r chi.Router) {

     

       44
        
       		r.Use(middleware.AuthMiddleware(rp.oauth))

     

       45
        
       		r.Get("/", rp.ForkRepo)

-97

appview/state/git_http.go

···

       1
       -
       package state

     

       2
       -
       

     

       3
       -
       import (

     

       4
       -
       	"fmt"

     

       5
       -
       	"io"

     

       6
       -
       	"maps"

     

       7
       -
       	"net/http"

     

       8
       -
       

     

       9
       -
       	"github.com/bluesky-social/indigo/atproto/identity"

     

       10
       -
       	"github.com/go-chi/chi/v5"

     

       11
       -
       	"tangled.org/core/appview/models"

     

       12
       -
       )

     

       13
       -
       

     

       14
       -
       func (s *State) InfoRefs(w http.ResponseWriter, r *http.Request) {

     

       15
       -
       	user := r.Context().Value("resolvedId").(identity.Identity)

     

       16
       -
       	repo := r.Context().Value("repo").(*models.Repo)

     

       17
       -
       

     

       18
       -
       	scheme := "https"

     

       19
       -
       	if s.config.Core.Dev {

     

       20
       -
       		scheme = "http"

     

       21
       -
       	}

     

       22
       -
       

     

       23
       -
       	targetURL := fmt.Sprintf("%s://%s/%s/%s/info/refs?%s", scheme, repo.Knot, user.DID, repo.Name, r.URL.RawQuery)

     

       24
       -
       	s.proxyRequest(w, r, targetURL)

     

       25
       -
       

     

       26
       -
       }

     

       27
       -
       

     

       28
       -
       func (s *State) UploadPack(w http.ResponseWriter, r *http.Request) {

     

       29
       -
       	user, ok := r.Context().Value("resolvedId").(identity.Identity)

     

       30
       -
       	if !ok {

     

       31
       -
       		http.Error(w, "failed to resolve user", http.StatusInternalServerError)

     

       32
       -
       		return

     

       33
       -
       	}

     

       34
       -
       	repo := r.Context().Value("repo").(*models.Repo)

     

       35
       -
       

     

       36
       -
       	scheme := "https"

     

       37
       -
       	if s.config.Core.Dev {

     

       38
       -
       		scheme = "http"

     

       39
       -
       	}

     

       40
       -
       

     

       41
       -
       	targetURL := fmt.Sprintf("%s://%s/%s/%s/git-upload-pack?%s", scheme, repo.Knot, user.DID, repo.Name, r.URL.RawQuery)

     

       42
       -
       	s.proxyRequest(w, r, targetURL)

     

       43
       -
       }

     

       44
       -
       

     

       45
       -
       func (s *State) ReceivePack(w http.ResponseWriter, r *http.Request) {

     

       46
       -
       	user, ok := r.Context().Value("resolvedId").(identity.Identity)

     

       47
       -
       	if !ok {

     

       48
       -
       		http.Error(w, "failed to resolve user", http.StatusInternalServerError)

     

       49
       -
       		return

     

       50
       -
       	}

     

       51
       -
       	repo := r.Context().Value("repo").(*models.Repo)

     

       52
       -
       

     

       53
       -
       	scheme := "https"

     

       54
       -
       	if s.config.Core.Dev {

     

       55
       -
       		scheme = "http"

     

       56
       -
       	}

     

       57
       -
       

     

       58
       -
       	targetURL := fmt.Sprintf("%s://%s/%s/%s/git-receive-pack?%s", scheme, repo.Knot, user.DID, repo.Name, r.URL.RawQuery)

     

       59
       -
       	s.proxyRequest(w, r, targetURL)

     

       60
       -
       }

     

       61
       -
       

     

       62
       -
       func (s *State) proxyRequest(w http.ResponseWriter, r *http.Request, targetURL string) {

     

       63
       -
       	client := &http.Client{}

     

       64
       -
       

     

       65
       -
       	// Create new request

     

       66
       -
       	proxyReq, err := http.NewRequest(r.Method, targetURL, r.Body)

     

       67
       -
       	if err != nil {

     

       68
       -
       		http.Error(w, err.Error(), http.StatusInternalServerError)

     

       69
       -
       		return

     

       70
       -
       	}

     

       71
       -
       

     

       72
       -
       	// Copy original headers

     

       73
       -
       	proxyReq.Header = r.Header

     

       74
       -
       

     

       75
       -
       	repoOwnerHandle := chi.URLParam(r, "user")

     

       76
       -
       	proxyReq.Header.Add("x-tangled-repo-owner-handle", repoOwnerHandle)

     

       77
       -
       

     

       78
       -
       	// Execute request

     

       79
       -
       	resp, err := client.Do(proxyReq)

     

       80
       -
       	if err != nil {

     

       81
       -
       		http.Error(w, err.Error(), http.StatusInternalServerError)

     

       82
       -
       		return

     

       83
       -
       	}

     

       84
       -
       	defer resp.Body.Close()

     

       85
       -
       

     

       86
       -
       	// Copy response headers

     

       87
       -
       	maps.Copy(w.Header(), resp.Header)

     

       88
       -
       

     

       89
       -
       	// Set response status code

     

       90
       -
       	w.WriteHeader(resp.StatusCode)

     

       91
       -
       

     

       92
       -
       	// Copy response body

     

       93
       -
       	if _, err := io.Copy(w, resp.Body); err != nil {

     

       94
       -
       		http.Error(w, err.Error(), http.StatusInternalServerError)

     

       95
       -
       		return

     

       96
       -
       	}

     

       97
       -
       }

+116

appview/state/proxy_knot.go

···

       1
       +
       package state

     

       2
       +
       

     

       3
       +
       import (

     

       4
       +
       	"fmt"

     

       5
       +
       	"io"

     

       6
       +
       	"maps"

     

       7
       +
       	"net/http"

     

       8
       +
       

     

       9
       +
       	"github.com/bluesky-social/indigo/atproto/identity"

     

       10
       +
       	"github.com/go-chi/chi/v5"

     

       11
       +
       	"tangled.org/core/appview/models"

     

       12
       +
       )

     

       13
       +
       

     

       14
       +
       func (s *State) InfoRefs(w http.ResponseWriter, r *http.Request) {

     

       15
       +
       	user := r.Context().Value("resolvedId").(identity.Identity)

     

       16
       +
       	repo := r.Context().Value("repo").(*models.Repo)

     

       17
       +
       

     

       18
       +
       	scheme := "https"

     

       19
       +
       	if s.config.Core.Dev {

     

       20
       +
       		scheme = "http"

     

       21
       +
       	}

     

       22
       +
       

     

       23
       +
       	targetURL := fmt.Sprintf("%s://%s/%s/%s/info/refs?%s", scheme, repo.Knot, user.DID, repo.Name, r.URL.RawQuery)

     

       24
       +
       	s.proxyRequest(w, r, targetURL)

     

       25
       +
       

     

       26
       +
       }

     

       27
       +
       

     

       28
       +
       func (s *State) UploadPack(w http.ResponseWriter, r *http.Request) {

     

       29
       +
       	user, ok := r.Context().Value("resolvedId").(identity.Identity)

     

       30
       +
       	if !ok {

     

       31
       +
       		http.Error(w, "failed to resolve user", http.StatusInternalServerError)

     

       32
       +
       		return

     

       33
       +
       	}

     

       34
       +
       	repo := r.Context().Value("repo").(*models.Repo)

     

       35
       +
       

     

       36
       +
       	scheme := "https"

     

       37
       +
       	if s.config.Core.Dev {

     

       38
       +
       		scheme = "http"

     

       39
       +
       	}

     

       40
       +
       

     

       41
       +
       	targetURL := fmt.Sprintf("%s://%s/%s/%s/git-upload-pack?%s", scheme, repo.Knot, user.DID, repo.Name, r.URL.RawQuery)

     

       42
       +
       	s.proxyRequest(w, r, targetURL)

     

       43
       +
       }

     

       44
       +
       

     

       45
       +
       func (s *State) ReceivePack(w http.ResponseWriter, r *http.Request) {

     

       46
       +
       	user, ok := r.Context().Value("resolvedId").(identity.Identity)

     

       47
       +
       	if !ok {

     

       48
       +
       		http.Error(w, "failed to resolve user", http.StatusInternalServerError)

     

       49
       +
       		return

     

       50
       +
       	}

     

       51
       +
       	repo := r.Context().Value("repo").(*models.Repo)

     

       52
       +
       

     

       53
       +
       	scheme := "https"

     

       54
       +
       	if s.config.Core.Dev {

     

       55
       +
       		scheme = "http"

     

       56
       +
       	}

     

       57
       +
       

     

       58
       +
       	targetURL := fmt.Sprintf("%s://%s/%s/%s/git-receive-pack?%s", scheme, repo.Knot, user.DID, repo.Name, r.URL.RawQuery)

     

       59
       +
       	s.proxyRequest(w, r, targetURL)

     

       60
       +
       }

     

       61
       +
       

     

       62
       +
       func (s *State) DownloadArchive(w http.ResponseWriter, r *http.Request) {

     

       63
       +
       	ref := chi.URLParam(r, "ref")

     

       64
       +
       

     

       65
       +
       	user, ok := r.Context().Value("resolvedId").(identity.Identity)

     

       66
       +
       	if !ok {

     

       67
       +
       		http.Error(w, "failed to resolve user", http.StatusInternalServerError)

     

       68
       +
       		return

     

       69
       +
       	}

     

       70
       +
       	repo := r.Context().Value("repo").(*models.Repo)

     

       71
       +
       

     

       72
       +
       	scheme := "https"

     

       73
       +
       	if s.config.Core.Dev {

     

       74
       +
       		scheme = "http"

     

       75
       +
       	}

     

       76
       +
       

     

       77
       +
       	targetURL := fmt.Sprintf("%s://%s/%s/%s/archive/%s", scheme, repo.Knot, user.DID, repo.Name, ref)

     

       78
       +
       	s.proxyRequest(w, r, targetURL)

     

       79
       +
       }

     

       80
       +
       

     

       81
       +
       func (s *State) proxyRequest(w http.ResponseWriter, r *http.Request, targetURL string) {

     

       82
       +
       	client := &http.Client{}

     

       83
       +
       

     

       84
       +
       	// Create new request

     

       85
       +
       	proxyReq, err := http.NewRequest(r.Method, targetURL, r.Body)

     

       86
       +
       	if err != nil {

     

       87
       +
       		http.Error(w, err.Error(), http.StatusInternalServerError)

     

       88
       +
       		return

     

       89
       +
       	}

     

       90
       +
       

     

       91
       +
       	// Copy original headers

     

       92
       +
       	proxyReq.Header = r.Header

     

       93
       +
       

     

       94
       +
       	repoOwnerHandle := chi.URLParam(r, "user")

     

       95
       +
       	proxyReq.Header.Add("x-tangled-repo-owner-handle", repoOwnerHandle)

     

       96
       +
       

     

       97
       +
       	// Execute request

     

       98
       +
       	resp, err := client.Do(proxyReq)

     

       99
       +
       	if err != nil {

     

       100
       +
       		http.Error(w, err.Error(), http.StatusInternalServerError)

     

       101
       +
       		return

     

       102
       +
       	}

     

       103
       +
       	defer resp.Body.Close()

     

       104
       +
       

     

       105
       +
       	// Copy response headers

     

       106
       +
       	maps.Copy(w.Header(), resp.Header)

     

       107
       +
       

     

       108
       +
       	// Set response status code

     

       109
       +
       	w.WriteHeader(resp.StatusCode)

     

       110
       +
       

     

       111
       +
       	// Copy response body

     

       112
       +
       	if _, err := io.Copy(w, resp.Body); err != nil {

     

       113
       +
       		http.Error(w, err.Error(), http.StatusInternalServerError)

     

       114
       +
       		return

     

       115
       +
       	}

     

       116
       +
       }

+3 -1

appview/state/router.go

···

       100
        
       			r.Get("/info/refs", s.InfoRefs)

     

       101
        
       			r.Post("/git-upload-pack", s.UploadPack)

     

       102
        
       			r.Post("/git-receive-pack", s.ReceivePack)

     

       103
       -
       

     

       0
        
       
     

       0
        
       
     

       104
        
       		})

     

       105
        
       	})

     

       106

···

       100
        
       			r.Get("/info/refs", s.InfoRefs)

     

       101
        
       			r.Post("/git-upload-pack", s.UploadPack)

     

       102
        
       			r.Post("/git-receive-pack", s.ReceivePack)

     

       103
       +
       			// intentionally doesn't use /* as this isn't

     

       104
       +
       			// a file path

     

       105
       +
       			r.Get("/archive/{ref}", s.DownloadArchive)

     

       106
        
       		})

     

       107
        
       	})

     

       108

+69

knotserver/archive.go

···

       1
       +
       package knotserver

     

       2
       +
       

     

       3
       +
       import (

     

       4
       +
       	"compress/gzip"

     

       5
       +
       	"fmt"

     

       6
       +
       	"net/http"

     

       7
       +
       	"strings"

     

       8
       +
       

     

       9
       +
       	securejoin "github.com/cyphar/filepath-securejoin"

     

       10
       +
       	"github.com/go-chi/chi/v5"

     

       11
       +
       	"github.com/go-git/go-git/v5/plumbing"

     

       12
       +
       	"tangled.org/core/knotserver/git"

     

       13
       +
       )

     

       14
       +
       

     

       15
       +
       func (h *Knot) Archive(w http.ResponseWriter, r *http.Request) {

     

       16
       +
       	var (

     

       17
       +
       		did  = chi.URLParam(r, "did")

     

       18
       +
       		name = chi.URLParam(r, "name")

     

       19
       +
       		ref  = chi.URLParam(r, "ref")

     

       20
       +
       	)

     

       21
       +
       	repo, err := securejoin.SecureJoin(did, name)

     

       22
       +
       	if err != nil {

     

       23
       +
       		gitError(w, "repository not found", http.StatusNotFound)

     

       24
       +
       		h.l.Error("git: failed to secure join repo path", "handler", "InfoRefs", "error", err)

     

       25
       +
       		return

     

       26
       +
       	}

     

       27
       +
       

     

       28
       +
       	repoPath, err := securejoin.SecureJoin(h.c.Repo.ScanPath, repo)

     

       29
       +
       	if err != nil {

     

       30
       +
       		gitError(w, "repository not found", http.StatusNotFound)

     

       31
       +
       		h.l.Error("git: failed to secure join repo path", "handler", "InfoRefs", "error", err)

     

       32
       +
       		return

     

       33
       +
       	}

     

       34
       +
       

     

       35
       +
       	gr, err := git.Open(repoPath, ref)

     

       36
       +
       

     

       37
       +
       	immutableLink := fmt.Sprintf(

     

       38
       +
       		"https://%s/%s/%s/archive/%s",

     

       39
       +
       		h.c.Server.Hostname,

     

       40
       +
       		did,

     

       41
       +
       		name,

     

       42
       +
       		gr.Hash(),

     

       43
       +
       	)

     

       44
       +
       

     

       45
       +
       	safeRefFilename := strings.ReplaceAll(plumbing.ReferenceName(ref).Short(), "/", "-")

     

       46
       +
       	filename := fmt.Sprintf("%s-%s.tar.gz", name, safeRefFilename)

     

       47
       +
       	w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))

     

       48
       +
       	w.Header().Set("Content-Type", "application/gzip")

     

       49
       +
       	w.Header().Set("Link", fmt.Sprintf("<%s>; rel=\"immutable\"", immutableLink))

     

       50
       +
       

     

       51
       +
       	gw := gzip.NewWriter(w)

     

       52
       +
       	defer gw.Close()

     

       53
       +
       

     

       54
       +
       	err = gr.WriteTar(gw, "")

     

       55
       +
       	if err != nil {

     

       56
       +
       		// once we start writing to the body we can't report error anymore

     

       57
       +
       		// so we are only left with logging the error

     

       58
       +
       		h.l.Error("writing tar file", "error", err)

     

       59
       +
       		return

     

       60
       +
       	}

     

       61
       +
       

     

       62
       +
       	err = gw.Flush()

     

       63
       +
       	if err != nil {

     

       64
       +
       		// once we start writing to the body we can't report error anymore

     

       65
       +
       		// so we are only left with logging the error

     

       66
       +
       		h.l.Error("flushing", "error", err.Error())

     

       67
       +
       		return

     

       68
       +
       	}

     

       69
       +
       }

knotserver/git/git.go

···

       71
        
       	return &g, nil

     

       72
        
       }

     

       73
        
       

     

       0
        
       
     

       0
        
       
     

       0
        
       
     

       0
        
       
     

       74
        
       // re-open a repository and update references

     

       75
        
       func (g *GitRepo) Refresh() error {

     

       76
        
       	refreshed, err := PlainOpen(g.path)

···

       71
        
       	return &g, nil

     

       72
        
       }

     

       73
        
       

     

       74
       +
       func (g *GitRepo) Hash() plumbing.Hash {

     

       75
       +
       	return g.h

     

       76
       +
       }

     

       77
       +
       

     

       78
        
       // re-open a repository and update references

     

       79
        
       func (g *GitRepo) Refresh() error {

     

       80
        
       	refreshed, err := PlainOpen(g.path)

knotserver/router.go

···

       84
        
       			r.Get("/info/refs", h.InfoRefs)

     

       85
        
       			r.Post("/git-upload-pack", h.UploadPack)

     

       86
        
       			r.Post("/git-receive-pack", h.ReceivePack)

     

       0
        
       
     

       0
        
       
     

       87
        
       		})

     

       88
        
       	})

     

       89

···

       84
        
       			r.Get("/info/refs", h.InfoRefs)

     

       85
        
       			r.Post("/git-upload-pack", h.UploadPack)

     

       86
        
       			r.Post("/git-receive-pack", h.ReceivePack)

     

       87
       +
       			// convenience routes

     

       88
       +
       			r.Get("/archive/{ref}", h.Archive)

     

       89
        
       		})

     

       90
        
       	})

     

       91

-81

knotserver/xrpc/repo_archive.go

···

       1
       -
       package xrpc

     

       2
       -
       

     

       3
       -
       import (

     

       4
       -
       	"compress/gzip"

     

       5
       -
       	"fmt"

     

       6
       -
       	"net/http"

     

       7
       -
       	"strings"

     

       8
       -
       

     

       9
       -
       	"github.com/go-git/go-git/v5/plumbing"

     

       10
       -
       

     

       11
       -
       	"tangled.org/core/knotserver/git"

     

       12
       -
       	xrpcerr "tangled.org/core/xrpc/errors"

     

       13
       -
       )

     

       14
       -
       

     

       15
       -
       func (x *Xrpc) RepoArchive(w http.ResponseWriter, r *http.Request) {

     

       16
       -
       	repo := r.URL.Query().Get("repo")

     

       17
       -
       	repoPath, err := x.parseRepoParam(repo)

     

       18
       -
       	if err != nil {

     

       19
       -
       		writeError(w, err.(xrpcerr.XrpcError), http.StatusBadRequest)

     

       20
       -
       		return

     

       21
       -
       	}

     

       22
       -
       

     

       23
       -
       	ref := r.URL.Query().Get("ref")

     

       24
       -
       	// ref can be empty (git.Open handles this)

     

       25
       -
       

     

       26
       -
       	format := r.URL.Query().Get("format")

     

       27
       -
       	if format == "" {

     

       28
       -
       		format = "tar.gz" // default

     

       29
       -
       	}

     

       30
       -
       

     

       31
       -
       	prefix := r.URL.Query().Get("prefix")

     

       32
       -
       

     

       33
       -
       	if format != "tar.gz" {

     

       34
       -
       		writeError(w, xrpcerr.NewXrpcError(

     

       35
       -
       			xrpcerr.WithTag("InvalidRequest"),

     

       36
       -
       			xrpcerr.WithMessage("only tar.gz format is supported"),

     

       37
       -
       		), http.StatusBadRequest)

     

       38
       -
       		return

     

       39
       -
       	}

     

       40
       -
       

     

       41
       -
       	gr, err := git.Open(repoPath, ref)

     

       42
       -
       	if err != nil {

     

       43
       -
       		writeError(w, xrpcerr.RefNotFoundError, http.StatusNotFound)

     

       44
       -
       		return

     

       45
       -
       	}

     

       46
       -
       

     

       47
       -
       	repoParts := strings.Split(repo, "/")

     

       48
       -
       	repoName := repoParts[len(repoParts)-1]

     

       49
       -
       

     

       50
       -
       	safeRefFilename := strings.ReplaceAll(plumbing.ReferenceName(ref).Short(), "/", "-")

     

       51
       -
       

     

       52
       -
       	var archivePrefix string

     

       53
       -
       	if prefix != "" {

     

       54
       -
       		archivePrefix = prefix

     

       55
       -
       	} else {

     

       56
       -
       		archivePrefix = fmt.Sprintf("%s-%s", repoName, safeRefFilename)

     

       57
       -
       	}

     

       58
       -
       

     

       59
       -
       	filename := fmt.Sprintf("%s-%s.tar.gz", repoName, safeRefFilename)

     

       60
       -
       	w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))

     

       61
       -
       	w.Header().Set("Content-Type", "application/gzip")

     

       62
       -
       

     

       63
       -
       	gw := gzip.NewWriter(w)

     

       64
       -
       	defer gw.Close()

     

       65
       -
       

     

       66
       -
       	err = gr.WriteTar(gw, archivePrefix)

     

       67
       -
       	if err != nil {

     

       68
       -
       		// once we start writing to the body we can't report error anymore

     

       69
       -
       		// so we are only left with logging the error

     

       70
       -
       		x.Logger.Error("writing tar file", "error", err.Error())

     

       71
       -
       		return

     

       72
       -
       	}

     

       73
       -
       

     

       74
       -
       	err = gw.Flush()

     

       75
       -
       	if err != nil {

     

       76
       -
       		// once we start writing to the body we can't report error anymore

     

       77
       -
       		// so we are only left with logging the error

     

       78
       -
       		x.Logger.Error("flushing", "error", err.Error())

     

       79
       -
       		return

     

       80
       -
       	}

     

       81
       -
       }

-1

knotserver/xrpc/xrpc.go

···

       64
        
       	r.Get("/"+tangled.RepoCompareNSID, x.RepoCompare)

     

       65
        
       	r.Get("/"+tangled.RepoGetDefaultBranchNSID, x.RepoGetDefaultBranch)

     

       66
        
       	r.Get("/"+tangled.RepoBranchNSID, x.RepoBranch)

     

       67
       -
       	r.Get("/"+tangled.RepoArchiveNSID, x.RepoArchive)

     

       68
        
       	r.Get("/"+tangled.RepoLanguagesNSID, x.RepoLanguages)

     

       69
        
       

     

       70
        
       	// knot query endpoints (no auth required)

···

       64
        
       	r.Get("/"+tangled.RepoCompareNSID, x.RepoCompare)

     

       65
        
       	r.Get("/"+tangled.RepoGetDefaultBranchNSID, x.RepoGetDefaultBranch)

     

       66
        
       	r.Get("/"+tangled.RepoBranchNSID, x.RepoBranch)

     

       0
        
       
     

       67
        
       	r.Get("/"+tangled.RepoLanguagesNSID, x.RepoLanguages)

     

       68
        
       

     

       69
        
       	// knot query endpoints (no auth required)

-55

lexicons/repo/archive.json

···

       1
       -
       {

     

       2
       -
         "lexicon": 1,

     

       3
       -
         "id": "sh.tangled.repo.archive",

     

       4
       -
         "defs": {

     

       5
       -
           "main": {

     

       6
       -
             "type": "query",

     

       7
       -
             "parameters": {

     

       8
       -
               "type": "params",

     

       9
       -
               "required": ["repo", "ref"],

     

       10
       -
               "properties": {

     

       11
       -
                 "repo": {

     

       12
       -
                   "type": "string",

     

       13
       -
                   "description": "Repository identifier in format 'did:plc:.../repoName'"

     

       14
       -
                 },

     

       15
       -
                 "ref": {

     

       16
       -
                   "type": "string",

     

       17
       -
                   "description": "Git reference (branch, tag, or commit SHA)"

     

       18
       -
                 },

     

       19
       -
                 "format": {

     

       20
       -
                   "type": "string",

     

       21
       -
                   "description": "Archive format",

     

       22
       -
                   "enum": ["tar", "zip", "tar.gz", "tar.bz2", "tar.xz"],

     

       23
       -
                   "default": "tar.gz"

     

       24
       -
                 },

     

       25
       -
                 "prefix": {

     

       26
       -
                   "type": "string",

     

       27
       -
                   "description": "Prefix for files in the archive"

     

       28
       -
                 }

     

       29
       -
               }

     

       30
       -
             },

     

       31
       -
             "output": {

     

       32
       -
               "encoding": "*/*",

     

       33
       -
               "description": "Binary archive data"

     

       34
       -
             },

     

       35
       -
             "errors": [

     

       36
       -
               {

     

       37
       -
                 "name": "RepoNotFound",

     

       38
       -
                 "description": "Repository not found or access denied"

     

       39
       -
               },

     

       40
       -
               {

     

       41
       -
                 "name": "RefNotFound",

     

       42
       -
                 "description": "Git reference not found"

     

       43
       -
               },

     

       44
       -
               {

     

       45
       -
                 "name": "InvalidRequest",

     

       46
       -
                 "description": "Invalid request parameters"

     

       47
       -
               },

     

       48
       -
               {

     

       49
       -
                 "name": "ArchiveError",

     

       50
       -
                 "description": "Failed to create archive"

     

       51
       -
               }

     

       52
       -
             ]

     

       53
       -
           }

     

       54
       -
         }

     

       55
       -
       }