[PATCH v3 4/4] upload-pack: use --objects-edge-aggressive for shallow fetches
When fetching into a shallow repository, we want to aggressively mark edges as uninteresting, since this decreases the pack size. However, is_shallow_repository() returns false on the server side, since the server is not shallow.
As the server, we get an indication of whether the client is shallow based on stdin; however, by the time we get to parsing stdin, we already will have called setup_revisions and won't be able to change our decision anymore. Teach pack-objects a --shallow option to indicate that the remote side is shallow and use it in upload-pack.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
Documentation/git-pack-objects.txt | 7 ++++++-
builtin/pack-objects.c | 5 ++++-
upload-pack.c | 4 +++-
3 files changed, 13 insertions(+), 3 deletions(-)
Show changes to 3 files +13 −3
Documentation/git-pack-objects.txt, builtin/pack-objects.c, upload-pack.c
diff --git a/Documentation/git-pack-objects.txt b/Documentation/git-pack-objects.txt
index d2d8f47..c2f76fb 100644
--- a/Documentation/git-pack-objects.txt
+++ b/Documentation/git-pack-objects.txt
@@ -13,7 +13,7 @@ SYNOPSIS
[--no-reuse-delta] [--delta-base-offset] [--non-empty]
[--local] [--incremental] [--window=<n>] [--depth=<n>]
[--revs [--unpacked | --all]] [--stdout | base-name]
- [--keep-true-parents] < object-list
+ [--shallow] [--keep-true-parents] < object-list
DESCRIPTION
@@ -190,6 +190,11 @@ required objects and is thus unusable by Git without making it
self-contained. Use `git index-pack --fix-thin`
(see linkgit:git-index-pack[1]) to restore the self-contained property.
+--shallow::
+ Optimize a pack that will be provided to a client with a shallow
+ repository. This option, combined with \--thin, can result in a
+ smaller pack at the cost of speed.
+
--delta-base-offset::
A packed archive can express the base object of a delta as
either a 20-byte object name or as an offset in the
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index f3ba861..6bfbd3d 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -2613,6 +2613,7 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
{
int use_internal_rev_list = 0;
int thin = 0;
+ int shallow = 0;
int all_progress_implied = 0;
struct argv_array rp = ARGV_ARRAY_INIT;
int rev_list_unpacked = 0, rev_list_all = 0, rev_list_reflog = 0;
@@ -2677,6 +2678,8 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
PARSE_OPT_OPTARG, option_parse_unpack_unreachable },
OPT_BOOL(0, "thin", &thin,
N_("create thin packs")),
+ OPT_BOOL(0, "shallow", &shallow,
+ N_("create packs suitable for shallow fetches")),
OPT_BOOL(0, "honor-pack-keep", &ignore_packed_keep,
N_("ignore packs that have companion .keep file")),
OPT_INTEGER(0, "compression", &pack_compression_level,
@@ -2711,7 +2714,7 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
argv_array_push(&rp, "pack-objects");
if (thin) {
use_internal_rev_list = 1;
- argv_array_push(&rp, is_repository_shallow()
+ argv_array_push(&rp, is_repository_shallow() || shallow
? "--objects-edge-aggressive"
: "--objects-edge");
} else
diff --git a/upload-pack.c b/upload-pack.c
index ac9ac15..b531a32 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -86,7 +86,7 @@ static void create_pack_file(void)
"corruption on the remote side.";
int buffered = -1;
ssize_t sz;
- const char *argv[12];
+ const char *argv[13];
int i, arg = 0;
FILE *pipe_fd;
@@ -100,6 +100,8 @@ static void create_pack_file(void)
argv[arg++] = "--thin";
argv[arg++] = "--stdout";
+ if (shallow_nr)
+ argv[arg++] = "--shallow";
if (!no_progress)
argv[arg++] = "--progress";
if (use_ofs_delta)
--
2.2.1.209.g41e5f3a
brian m. carlson
