From: Christian Couder <christian.couder@gmail.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>,
Ben Peart <Ben.Peart@microsoft.com>,
Nguyen Thai Ngoc Duy <pclouds@gmail.com>,
Mike Hommey <mh@glandium.org>,
Lars Schneider <larsxschneider@gmail.com>,
Eric Wong <e@80x24.org>,
Christian Couder <chriscool@tuxfamily.org>
Subject: [RFC/PATCH v4 21/49] odb-helper: add 'store_plain_objects' to 'struct odb_helper'
Date: Tue, 20 Jun 2017 09:54:55 +0200 [thread overview]
Message-ID: <20170620075523.26961-22-chriscool@tuxfamily.org> (raw)
In-Reply-To: <20170620075523.26961-1-chriscool@tuxfamily.org>
This adds a configuration option odb.<helper>.plainObjects and the
corresponding boolean variable called 'store_plain_objects' in
'struct odb_helper' to make it possible for external object
databases to store object as plain objects instead of Git objects.
The existing odb_helper_fetch_object() is renamed
odb_helper_fetch_git_object() and a new odb_helper_fetch_plain_object()
is introduce to deal with external objects that are not in Git format.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
external-odb.c | 2 +
odb-helper.c | 113 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
odb-helper.h | 1 +
3 files changed, 114 insertions(+), 2 deletions(-)
diff --git a/external-odb.c b/external-odb.c
index a88837feda..d11fc98719 100644
--- a/external-odb.c
+++ b/external-odb.c
@@ -36,6 +36,8 @@ static int external_odb_config(const char *var, const char *value, void *data)
if (!strcmp(key, "command"))
return git_config_string(&o->cmd, var, value);
+ if (!strcmp(key, "plainobjects"))
+ o->store_plain_objects = git_config_bool(var, value);
return 0;
}
diff --git a/odb-helper.c b/odb-helper.c
index af7cc55ca2..b33ee81c97 100644
--- a/odb-helper.c
+++ b/odb-helper.c
@@ -159,8 +159,107 @@ int odb_helper_has_object(struct odb_helper *o, const unsigned char *sha1)
return !!odb_helper_lookup(o, sha1);
}
-int odb_helper_fetch_object(struct odb_helper *o, const unsigned char *sha1,
- int fd)
+static int odb_helper_fetch_plain_object(struct odb_helper *o,
+ const unsigned char *sha1,
+ int fd)
+{
+ struct odb_helper_object *obj;
+ struct odb_helper_cmd cmd;
+ unsigned long total_got = 0;
+
+ char hdr[32];
+ int hdrlen;
+
+ int ret = Z_STREAM_END;
+ unsigned char compressed[4096];
+ git_zstream stream;
+ git_SHA_CTX hash;
+ unsigned char real_sha1[20];
+
+ obj = odb_helper_lookup(o, sha1);
+ if (!obj)
+ return -1;
+
+ if (odb_helper_start(o, &cmd, 0, "get %s", sha1_to_hex(sha1)) < 0)
+ return -1;
+
+ /* Set it up */
+ git_deflate_init(&stream, zlib_compression_level);
+ stream.next_out = compressed;
+ stream.avail_out = sizeof(compressed);
+ git_SHA1_Init(&hash);
+
+ /* First header.. */
+ hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", typename(obj->type), obj->size) + 1;
+ stream.next_in = (unsigned char *)hdr;
+ stream.avail_in = hdrlen;
+ while (git_deflate(&stream, 0) == Z_OK)
+ ; /* nothing */
+ git_SHA1_Update(&hash, hdr, hdrlen);
+
+ for (;;) {
+ unsigned char buf[4096];
+ int r;
+
+ r = xread(cmd.child.out, buf, sizeof(buf));
+ if (r < 0) {
+ error("unable to read from odb helper '%s': %s",
+ o->name, strerror(errno));
+ close(cmd.child.out);
+ odb_helper_finish(o, &cmd);
+ git_deflate_end(&stream);
+ return -1;
+ }
+ if (r == 0)
+ break;
+
+ total_got += r;
+
+ /* Then the data itself.. */
+ stream.next_in = (void *)buf;
+ stream.avail_in = r;
+ do {
+ unsigned char *in0 = stream.next_in;
+ ret = git_deflate(&stream, Z_FINISH);
+ git_SHA1_Update(&hash, in0, stream.next_in - in0);
+ write_or_die(fd, compressed, stream.next_out - compressed);
+ stream.next_out = compressed;
+ stream.avail_out = sizeof(compressed);
+ } while (ret == Z_OK);
+ }
+
+ close(cmd.child.out);
+ if (ret != Z_STREAM_END) {
+ warning("bad zlib data from odb helper '%s' for %s",
+ o->name, sha1_to_hex(sha1));
+ return -1;
+ }
+ ret = git_deflate_end_gently(&stream);
+ if (ret != Z_OK) {
+ warning("deflateEnd on object %s from odb helper '%s' failed (%d)",
+ sha1_to_hex(sha1), o->name, ret);
+ return -1;
+ }
+ git_SHA1_Final(real_sha1, &hash);
+ if (hashcmp(sha1, real_sha1)) {
+ warning("sha1 mismatch from odb helper '%s' for %s (got %s)",
+ o->name, sha1_to_hex(sha1), sha1_to_hex(real_sha1));
+ return -1;
+ }
+ if (odb_helper_finish(o, &cmd))
+ return -1;
+ if (total_got != obj->size) {
+ warning("size mismatch from odb helper '%s' for %s (%lu != %lu)",
+ o->name, sha1_to_hex(sha1), total_got, obj->size);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int odb_helper_fetch_git_object(struct odb_helper *o,
+ const unsigned char *sha1,
+ int fd)
{
struct odb_helper_object *obj;
struct odb_helper_cmd cmd;
@@ -248,6 +347,16 @@ int odb_helper_fetch_object(struct odb_helper *o, const unsigned char *sha1,
return 0;
}
+int odb_helper_fetch_object(struct odb_helper *o,
+ const unsigned char *sha1,
+ int fd)
+{
+ if (o->store_plain_objects)
+ return odb_helper_fetch_plain_object(o, sha1, fd);
+ else
+ return odb_helper_fetch_git_object(o, sha1, fd);
+}
+
int odb_helper_for_each_object(struct odb_helper *o,
each_external_object_fn fn,
void *data)
diff --git a/odb-helper.h b/odb-helper.h
index 4e321195e8..3953b9bbaf 100644
--- a/odb-helper.h
+++ b/odb-helper.h
@@ -6,6 +6,7 @@
struct odb_helper {
const char *name;
const char *cmd;
+ int store_plain_objects;
struct odb_helper_object {
unsigned char sha1[20];
--
2.13.1.565.gbfcd7a9048
next prev parent reply other threads:[~2017-06-20 7:58 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-20 7:54 [RFC/PATCH v4 00/49] Add initial experimental external ODB support Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 01/49] builtin/clone: get rid of 'value' strbuf Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 02/49] t0021/rot13-filter: refactor packet reading functions Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 03/49] t0021/rot13-filter: improve 'if .. elsif .. else' style Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 04/49] Add Git/Packet.pm from parts of t0021/rot13-filter.pl Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 05/49] t0021/rot13-filter: use Git/Packet.pm Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 06/49] Git/Packet.pm: improve error message Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 07/49] Git/Packet.pm: add packet_initialize() Christian Couder
2017-06-23 18:55 ` Ben Peart
2017-06-20 7:54 ` [RFC/PATCH v4 08/49] Git/Packet: add capability functions Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 09/49] Add initial external odb support Christian Couder
2017-06-23 19:49 ` Ben Peart
2017-06-20 7:54 ` [RFC/PATCH v4 10/49] external odb foreach Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 11/49] t0400: add 'put' command to odb-helper script Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 12/49] external odb: add write support Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 13/49] external-odb: accept only blobs for now Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 14/49] t0400: add test for external odb write support Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 15/49] Add GIT_NO_EXTERNAL_ODB env variable Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 16/49] Add t0410 to test external ODB transfer Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 17/49] lib-httpd: pass config file to start_httpd() Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 18/49] lib-httpd: add upload.sh Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 19/49] lib-httpd: add list.sh Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 20/49] lib-httpd: add apache-e-odb.conf Christian Couder
2017-06-20 7:54 ` Christian Couder [this message]
2017-06-20 7:54 ` [RFC/PATCH v4 22/49] pack-objects: don't pack objects in external odbs Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 23/49] t0420: add test with HTTP external odb Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 24/49] odb-helper: start fault in implementation Christian Couder
2017-06-20 7:54 ` [RFC/PATCH v4 25/49] external-odb: add external_odb_fault_in_object() Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 26/49] odb-helper: add script_mode Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 27/49] Documentation: add read-object-protocol.txt Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 28/49] contrib: add long-running-read-object/example.pl Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 29/49] Add t0410 to test read object mechanism Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 30/49] odb-helper: add read_object_process() Christian Couder
2017-07-10 15:57 ` Ben Peart
2017-06-20 7:55 ` [RFC/PATCH v4 31/49] external-odb: add external_odb_get_capabilities() Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 32/49] t04*: add 'get_cap' support to helpers Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 33/49] odb-helper: call odb_helper_lookup() with 'have' capability Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 34/49] odb-helper: fix odb_helper_fetch_object() for read_object Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 35/49] Add t0460 to test passing git objects Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 36/49] odb-helper: add read_packetized_git_object_to_fd() Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 37/49] odb-helper: add read_packetized_plain_object_to_fd() Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 38/49] Add t0470 to test passing plain objects Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 39/49] odb-helper: add write_object_process() Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 40/49] Add t0480 to test "have" capability and plain objects Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 41/49] external-odb: add external_odb_do_fetch_object() Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 42/49] odb-helper: advertise 'have' capability Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 43/49] odb-helper: advertise 'put' capability Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 44/49] odb-helper: add have_object_process() Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 45/49] clone: add initial param to write_remote_refs() Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 46/49] clone: add --initial-refspec option Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 47/49] clone: disable external odb before initial clone Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 48/49] Add test for 'clone --initial-refspec' Christian Couder
2017-06-20 7:55 ` [RFC/PATCH v4 49/49] t: add t0430 to test cloning using bundles Christian Couder
2017-06-20 13:48 ` [RFC/PATCH v4 00/49] Add initial experimental external ODB support Christian Couder
2017-06-23 18:24 ` Ben Peart
2017-07-01 19:41 ` Christian Couder
2017-07-01 20:12 ` Christian Couder
2017-07-01 20:33 ` Junio C Hamano
2017-07-02 4:25 ` Christian Couder
2017-07-03 16:56 ` Junio C Hamano
2017-07-06 17:36 ` Ben Peart
2017-09-15 12:56 ` Christian Couder
2017-07-12 19:06 ` Jonathan Tan
2017-09-15 13:16 ` Christian Couder
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