Teach git-commit-graph to write graph files. Create new test script to verify
this command succeeds without failure.
Signed-off-by: Derrick Stolee <dsto...@microsoft.com>
---
Documentation/git-commit-graph.txt | 39 +++++++++++++
builtin/commit-graph.c | 43 +++++++++++++++
t/t5318-commit-graph.sh | 109 +++++++++++++++++++++++++++++++++++++
3 files changed, 191 insertions(+)
create mode 100755 t/t5318-commit-graph.sh
diff --git a/Documentation/git-commit-graph.txt
b/Documentation/git-commit-graph.txt
index e1c3078ca1..55dfe5c3d8 100644
--- a/Documentation/git-commit-graph.txt
+++ b/Documentation/git-commit-graph.txt
@@ -5,6 +5,45 @@ NAME
----
git-commit-graph - Write and verify Git commit graphs (.graph files)
+
+SYNOPSIS
+--------
+[verse]
+'git commit-graph write' <options> [--pack-dir <pack_dir>]
+
+
+DESCRIPTION
+-----------
+
+Manage the serialized commit graph file.
+
+
+OPTIONS
+-------
+--pack-dir::
+ Use given directory for the location of packfiles, graph-head,
+ and graph files.
+
+
+COMMANDS
+--------
+'write'::
+
+Write a commit graph file based on the commits found in packfiles.
+Includes all commits from the existing commit graph file. Outputs the
+checksum hash of the written file.
+
+
+EXAMPLES
+--------
+
+* Write a commit graph file for the packed commits in your local .git folder.
++
+------------------------------------------------
+$ git commit-graph write
+------------------------------------------------
+
+
GIT
---
Part of the linkgit:git[1] suite
diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index a01c5d9981..5dac033bfe 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c
@@ -1,9 +1,16 @@
#include "builtin.h"
#include "config.h"
#include "parse-options.h"
+#include "commit-graph.h"
static char const * const builtin_commit_graph_usage[] = {
N_("git commit-graph [--pack-dir <packdir>]"),
+ N_("git commit-graph write [--pack-dir <packdir>]"),
+ NULL
+};
+
+static const char * const builtin_commit_graph_write_usage[] = {
+ N_("git commit-graph write [--pack-dir <packdir>]"),
NULL
};
@@ -11,6 +18,37 @@ static struct opts_commit_graph {
const char *pack_dir;
} opts;
+static int graph_write(int argc, const char **argv)
+{
+ struct object_id *graph_hash;
+
+ static struct option builtin_commit_graph_write_options[] = {
+ { OPTION_STRING, 'p', "pack-dir", &opts.pack_dir,
+ N_("dir"),
+ N_("The pack directory to store the graph") },
+ OPT_END(),
+ };
+
+ argc = parse_options(argc, argv, NULL,
+ builtin_commit_graph_write_options,
+ builtin_commit_graph_write_usage, 0);
+
+ if (!opts.pack_dir) {
+ struct strbuf path = STRBUF_INIT;
+ strbuf_addstr(&path, get_object_directory());
+ strbuf_addstr(&path, "/pack");
+ opts.pack_dir = strbuf_detach(&path, NULL);
+ }
+
+ graph_hash = write_commit_graph(opts.pack_dir);
+
+ if (graph_hash) {
+ printf("%s\n", oid_to_hex(graph_hash));
+ FREE_AND_NULL(graph_hash);
+ }
+
+ return 0;
+}
int cmd_commit_graph(int argc, const char **argv, const char *prefix)
{
@@ -31,6 +69,11 @@ int cmd_commit_graph(int argc, const char **argv, const char
*prefix)
builtin_commit_graph_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
+ if (argc > 0) {
+ if (!strcmp(argv[0], "write"))
+ return graph_write(argc, argv);
+ }
+
usage_with_options(builtin_commit_graph_usage,
builtin_commit_graph_options);
}
diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
new file mode 100755
index 0000000000..b762587595
--- /dev/null
+++ b/t/t5318-commit-graph.sh
@@ -0,0 +1,109 @@
+#!/bin/sh
+
+test_description='commit graph'
+. ./test-lib.sh
+
+test_expect_success 'setup full repo' '
+ rm -rf .git &&
+ mkdir full &&
+ cd full &&
+ git init &&
+ packdir=".git/objects/pack"'
+
+test_expect_success 'write graph with no packs' '
+ git commit-graph write --pack-dir .'
+
+test_expect_success 'create commits and repack' '
+ for i in $(test_seq 3)
+ do
+ test_commit $i &&
+ git branch commits/$i
+ done &&
+ git repack'
+
+test_expect_success 'write graph' '
+ graph1=$(git commit-graph write) &&
+ test_path_is_file $packdir/graph-$graph1.graph'
+
+test_expect_success 'Add more commits' '
+ git reset --hard commits/1 &&
+ for i in $(test_seq 4 5)
+ do
+ test_commit $i &&
+ git branch commits/$i
+ done &&
+ git reset --hard commits/2 &&
+ for i in $(test_seq 6 7)
+ do
+ test_commit $i &&
+ git branch commits/$i
+ done &&
+ git reset --hard commits/2 &&
+ git merge commits/4 &&
+ git branch merge/1 &&
+ git reset --hard commits/4 &&
+ git merge commits/6 &&
+ git branch merge/2 &&
+ git reset --hard commits/3 &&
+ git merge commits/5 commits/7 &&
+ git branch merge/3 &&
+ git repack'
+
+# Current graph structure:
+#
+# __M3___
+# / | \
+# 3 M1 5 M2 7
+# |/ \|/ \|
+# 2 4 6
+# |___/____/
+# 1
+
+
+test_expect_success 'write graph with merges' '
+ graph2=$(git commit-graph write)&&
+ test_path_is_file $packdir/graph-$graph2.graph'
+
+test_expect_success 'Add one more commit' '
+ test_commit 8 &&
+ git branch commits/8 &&
+ ls $packdir | grep idx >existing-idx &&
+ git repack &&
+ ls $packdir | grep idx | grep -v --file=existing-idx >new-idx'
+
+# Current graph structure:
+#
+# 8
+# |
+# __M3___
+# / | \
+# 3 M1 5 M2 7
+# |/ \|/ \|
+# 2 4 6
+# |___/____/
+# 1
+
+test_expect_success 'write graph with new commit' '
+ graph3=$(git commit-graph write) &&
+ test_path_is_file $packdir/graph-$graph3.graph'
+
+
+test_expect_success 'write graph with nothing new' '
+ graph4=$(git commit-graph write) &&
+ test_path_is_file $packdir/graph-$graph4.graph &&
+ printf $graph3 >expect &&
+ printf $graph4 >output &&
+ test_cmp expect output'
+
+test_expect_success 'setup bare repo' '
+ cd .. &&
+ git clone --bare --no-local full bare &&
+ cd bare &&
+ baredir="./objects/pack"'
+
+test_expect_success 'write graph in bare repo' '
+ graphbare=$(git commit-graph write) &&
+ test_path_is_file $baredir/graph-$graphbare.graph'
+
+test_done
+
--
2.15.1.45.g9b7079f
