From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-11.6 required=3.0 tests=AWL,BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,USER_IN_DEF_DKIM_WL shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 60526211B3 for ; Mon, 3 Dec 2018 23:38:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726098AbeLCXh4 (ORCPT ); Mon, 3 Dec 2018 18:37:56 -0500 Received: from mail-oi1-f201.google.com ([209.85.167.201]:53621 "EHLO mail-oi1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725938AbeLCXh4 (ORCPT ); Mon, 3 Dec 2018 18:37:56 -0500 Received: by mail-oi1-f201.google.com with SMTP id w128so9311380oie.20 for ; Mon, 03 Dec 2018 15:37:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=zVdl3kFjBloHM1xxX+yiP/ndfBY95o+7TaWwx9wskf0=; b=Mn3j1WvOvpSHwcEqX1ekblQ58U3EaOiiMdtd17JeBQGdSQRMSCjJEi0e3QBeWEtcRj LtnTyrNEnIwDubwPSMIM4zgoviW496LwQyAdGYp4bRjYM7sbd6VPrQOxTvb0eiwxDtwo AMioVs8777gr8AqmpRN5VeXznY39/EB7KsZKqK4MWRD6b1nxu4PecvlOgAfMKvnn3Q8Y D7C44JelplJRj9arwPDxEOXhL9gPgwRG3bkb2J7MypYnft+2pYbaFkfhint/sTjLqUkC 15qKUdDXyS/zG5ujgaHtsqw4fh/sfGdi6dy7s88kOATjNSOg7lcnMSPal4ETstD35Rg4 /Zxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=zVdl3kFjBloHM1xxX+yiP/ndfBY95o+7TaWwx9wskf0=; b=qdpvvzbrDj9gTXX/z7QpyZ1W37fSEMLSwM2NMcVV9JXUQGe01f0kCznqia+n97UoyT uWTdGatHCHpfH/abWwy6AH1fSMHJUy3msKIykj15tfqQ15ohARIshBJEJwh2X67vNOqm T274UOyM5TwU+eWoZRXpb4zDmvWAB63zbQRXFD++uFAX60u/bUxv1a1FJk7v8LdYByZ7 6J+pFR863FZzCP7C44Zh7sJUAQ2H4mRVgqrevIG6fQyP4wNqz0b/TwwYLWh/KNFe/2nv 4TyoFc17bp7DaFXpsjMWuOScLnqHpUSSqh3Rx7O0lQGUstSJYJ0tln73f3yMMNXqp37k bqdg== X-Gm-Message-State: AA+aEWYTcjNhr2/JyIDj8pi6oDAq/AUIceWW+KNedLkQklBS8AUhA5L3 +/KLmr4w3iBfszYkpPJTsFS7AEtkt/TnGkuZepjCTlPrHAyD2tFBDknUxX/5CbrYsiQtxn/lAgf yMPBIEvrdXvqhKnivoHJs17mnefQuA69RoPOnrnlOFfb43csr6oJ1USlwphi397y7lgR4fhe3wS ou X-Google-Smtp-Source: AFSGD/Wqn42BNs3DS4QNaTKitknt0QDt0IjUA0dz/oFgVekI+ywUbLZJlVivc4uF3JlhPtLfrW0PHuYu5tAqhzAiJETg X-Received: by 2002:aca:ec82:: with SMTP id k124mr14642973oih.36.1543880275027; Mon, 03 Dec 2018 15:37:55 -0800 (PST) Date: Mon, 3 Dec 2018 15:37:38 -0800 In-Reply-To: Message-Id: <707a8181a0e8cd2e21989fa6da59cee38d9fadde.1543879256.git.jonathantanmy@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.19.0.271.gfe8321ec05.dirty Subject: [WIP RFC 5/5] upload-pack: send part of packfile response as uri From: Jonathan Tan To: git@vger.kernel.org Cc: Jonathan Tan Content-Type: text/plain; charset="UTF-8" Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org This is a partial implementation of upload-pack sending part of its packfile response as URIs. The client is not fully implemented - it knows to ignore the "packfile-uris" section, but because it does not actually fetch those URIs, the returned packfile is incomplete. A test is included to show that the appropriate URI is indeed transmitted, and that the returned packfile is lacking exactly the expected object. Signed-off-by: Jonathan Tan --- builtin/pack-objects.c | 48 ++++++++++++++++++++++++++++++++++++++++++ fetch-pack.c | 9 ++++++++ t/t5702-protocol-v2.sh | 25 ++++++++++++++++++++++ upload-pack.c | 37 ++++++++++++++++++++++++++++---- 4 files changed, 115 insertions(+), 4 deletions(-) diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c index e7ea206c08..2abbddd3cb 100644 --- a/builtin/pack-objects.c +++ b/builtin/pack-objects.c @@ -117,6 +117,15 @@ enum missing_action { static enum missing_action arg_missing_action; static show_object_fn fn_show_object; +struct configured_exclusion { + struct oidmap_entry e; + char *uri; +}; +static struct oidmap configured_exclusions; + +static int exclude_configured_blobs; +static struct oidset excluded_by_config; + /* * stats */ @@ -831,6 +840,23 @@ static off_t write_reused_pack(struct hashfile *f) return reuse_packfile_offset - sizeof(struct pack_header); } +static void write_excluded_by_configs(void) +{ + struct oidset_iter iter; + const struct object_id *oid; + + oidset_iter_init(&excluded_by_config, &iter); + while ((oid = oidset_iter_next(&iter))) { + struct configured_exclusion *ex = + oidmap_get(&configured_exclusions, oid); + + if (!ex) + BUG("configured exclusion wasn't configured"); + write_in_full(1, ex->uri, strlen(ex->uri)); + write_in_full(1, "\n", 1); + } +} + static const char no_split_warning[] = N_( "disabling bitmap writing, packs are split due to pack.packSizeLimit" ); @@ -1124,6 +1150,12 @@ static int want_object_in_pack(const struct object_id *oid, } } + if (exclude_configured_blobs && + oidmap_get(&configured_exclusions, oid)) { + oidset_insert(&excluded_by_config, oid); + return 0; + } + return 1; } @@ -2728,6 +2760,19 @@ static int git_pack_config(const char *k, const char *v, void *cb) pack_idx_opts.version); return 0; } + if (!strcmp(k, "uploadpack.blobpackfileuri")) { + struct configured_exclusion *ex = xmalloc(sizeof(*ex)); + const char *end; + + if (parse_oid_hex(v, &ex->e.oid, &end) || *end != ' ') + die(_("value of uploadpack.blobpackfileuri must be " + "of the form ' ' (got '%s')"), v); + if (oidmap_get(&configured_exclusions, &ex->e.oid)) + die(_("object already configured in another " + "uploadpack.blobpackfileuri (got '%s')"), v); + ex->uri = xstrdup(end + 1); + oidmap_put(&configured_exclusions, ex); + } return git_default_config(k, v, cb); } @@ -3314,6 +3359,8 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix) N_("do not pack objects in promisor packfiles")), OPT_BOOL(0, "delta-islands", &use_delta_islands, N_("respect islands during delta compression")), + OPT_BOOL(0, "exclude-configured-blobs", &exclude_configured_blobs, + N_("respect uploadpack.blobpackfileuri")), OPT_END(), }; @@ -3487,6 +3534,7 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix) return 0; if (nr_result) prepare_pack(window, depth); + write_excluded_by_configs(); write_pack_file(); if (progress) fprintf_ln(stderr, diff --git a/fetch-pack.c b/fetch-pack.c index 9691046e64..6e1985ab55 100644 --- a/fetch-pack.c +++ b/fetch-pack.c @@ -1413,6 +1413,15 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args, receive_wanted_refs(&reader, sought, nr_sought); /* get the pack */ + if (process_section_header(&reader, "packfile-uris", 1)) { + /* skip the whole section */ + process_section_header(&reader, "packfile-uris", 0); + while (packet_reader_read(&reader) == PACKET_READ_NORMAL) { + /* do nothing */ + } + if (reader.status != PACKET_READ_DELIM) + die("expected DELIM"); + } process_section_header(&reader, "packfile", 0); if (get_pack(args, fd, pack_lockfile)) die(_("git fetch-pack: fetch failed.")); diff --git a/t/t5702-protocol-v2.sh b/t/t5702-protocol-v2.sh index 0f2b09ebb8..ccb1fc510e 100755 --- a/t/t5702-protocol-v2.sh +++ b/t/t5702-protocol-v2.sh @@ -588,6 +588,31 @@ test_expect_success 'when server does not send "ready", expect FLUSH' ' test_i18ngrep "expected no other sections to be sent after no .ready." err ' +test_expect_success 'part of packfile response provided as URI' ' + rm -rf "$HTTPD_DOCUMENT_ROOT_PATH/http_parent" http_child log && + + git init "$HTTPD_DOCUMENT_ROOT_PATH/http_parent" && + echo my-blob >"$HTTPD_DOCUMENT_ROOT_PATH/http_parent/my-blob" && + git -C "$HTTPD_DOCUMENT_ROOT_PATH/http_parent/" add my-blob && + git -C "$HTTPD_DOCUMENT_ROOT_PATH/http_parent/" commit -m x && + + git -C "$HTTPD_DOCUMENT_ROOT_PATH/http_parent/" hash-object my-blob >h && + git -C "$HTTPD_DOCUMENT_ROOT_PATH/http_parent/" config \ + "uploadpack.blobpackfileuri" \ + "$(cat h) https://example.com/a-uri" && + + # NEEDSWORK: "git clone" fails here because it ignores the URI provided + # instead of fetching it. + test_must_fail env GIT_TRACE_PACKET="$(pwd)/log" \ + git -c protocol.version=2 clone \ + "$HTTPD_URL/smart/http_parent" http_child 2>err && + # Although "git clone" fails, we can still check that the server + # provided the URI we requested and that the error message pinpoints + # the object that is missing. + grep "clone< uri https://example.com/a-uri" log && + test_i18ngrep "did not receive expected object $(cat h)" err +' + stop_httpd test_done diff --git a/upload-pack.c b/upload-pack.c index aa2589b858..a8eef697ec 100644 --- a/upload-pack.c +++ b/upload-pack.c @@ -104,6 +104,7 @@ static int write_one_shallow(const struct commit_graft *graft, void *cb_data) struct output_state { char buffer[8193]; int used; + unsigned packfile_uris_started : 1; unsigned packfile_started : 1; struct strbuf progress_buf; }; @@ -129,10 +130,35 @@ static int read_pack_objects_stdout(int outfd, struct output_state *os, } os->used += readsz; - if (!os->packfile_started) { - os->packfile_started = 1; - if (use_protocol_v2) - packet_write_fmt(1, "packfile\n"); + while (!os->packfile_started) { + char *p; + if (os->used >= 4 && !memcmp(os->buffer, "PACK", 4)) { + os->packfile_started = 1; + if (use_protocol_v2) { + if (os->packfile_uris_started) + packet_delim(1); + packet_write_fmt(1, "packfile\n"); + } + break; + } + if ((p = memchr(os->buffer, '\n', os->used))) { + if (!os->packfile_uris_started) { + os->packfile_uris_started = 1; + if (!use_protocol_v2) + BUG("packfile_uris requires protocol v2"); + packet_write_fmt(1, "packfile-uris\n"); + } + *p = '\0'; + packet_write_fmt(1, "uri %s\n", os->buffer); + + os->used -= p - os->buffer + 1; + memmove(os->buffer, p, os->used); + } else { + /* + * Incomplete line. + */ + return readsz; + } } if (os->used > 1) { @@ -205,6 +231,9 @@ static void create_pack_file(const struct object_array *have_obj, filter_options.filter_spec); } } + if (use_protocol_v2) + argv_array_push(&pack_objects.args, + "--exclude-configured-blobs"); pack_objects.in = -1; pack_objects.out = -1; -- 2.19.0.271.gfe8321ec05.dirty