From b09b785c785c93d9e26f4fc754116c24ea02bf3c Mon Sep 17 00:00:00 2001 From: Derrick Stolee Date: Wed, 1 Apr 2020 21:00:44 +0000 Subject: [PATCH] commit-graph: fix buggy --expire-time option The commit-graph builtin has an --expire-time option that takes a datetime using OPT_EXPIRY_DATE(). However, the implementation inside expire_commit_graphs() was treating a non-zero value as a number of seconds to subtract from "now". Update t5323-split-commit-graph.sh to demonstrate the correct value of the --expire-time option by actually creating a crud .graph file with mtime earlier than the expire time. Instead of using a super- early time (1980) we use an explicit, and recent, time. Using test-tool chmtime to create two files on either end of an exact second, we create a test that catches this failure no matter the current time. Using a fixed date is more portable than trying to format a relative date string into the --expiry-date input. I noticed this when inspecting some Scalar repos that had an excess number of commit-graph files. In Scalar, we were using this second interpretation by using "--expire-time=3600" to mean "delete graphs older than one hour ago" to avoid deleting a commit-graph that a foreground process may be trying to load. Also I noticed that the help text was copied from the --max-commits option. Fix that help text. Signed-off-by: Derrick Stolee Signed-off-by: Junio C Hamano --- builtin/commit-graph.c | 2 +- commit-graph.c | 2 +- t/t5324-split-commit-graph.sh | 8 +++++++- 3 files changed, 9 insertions(+), 3 deletions(-) diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c index 38027b83d9..7339f87c2d 100644 --- a/builtin/commit-graph.c +++ b/builtin/commit-graph.c @@ -175,7 +175,7 @@ static int graph_write(int argc, const char **argv) OPT_INTEGER(0, "size-multiple", &split_opts.size_multiple, N_("maximum ratio between two levels of a split commit-graph")), OPT_EXPIRY_DATE(0, "expire-time", &split_opts.expire_time, - N_("maximum number of commits in a non-base split commit-graph")), + N_("only expire files older than a given date-time")), OPT_END(), }; diff --git a/commit-graph.c b/commit-graph.c index c91e6f0fb8..4df4326b50 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -1694,7 +1694,7 @@ static void expire_commit_graphs(struct write_commit_graph_context *ctx) timestamp_t expire_time = time(NULL); if (ctx->split_opts && ctx->split_opts->expire_time) - expire_time -= ctx->split_opts->expire_time; + expire_time = ctx->split_opts->expire_time; if (!ctx->split) { char *chain_file_name = get_chain_filename(ctx->obj_dir); unlink(chain_file_name); diff --git a/t/t5324-split-commit-graph.sh b/t/t5324-split-commit-graph.sh index 03f45a1ed9..8e9cb23e2a 100755 --- a/t/t5324-split-commit-graph.sh +++ b/t/t5324-split-commit-graph.sh @@ -202,8 +202,14 @@ test_expect_success 'test merge stragety constants' ' git config core.commitGraph true && test_line_count = 2 $graphdir/commit-graph-chain && test_commit 15 && - git commit-graph write --reachable --split --size-multiple=10 --expire-time=1980-01-01 && + touch $graphdir/to-delete.graph $graphdir/to-keep.graph && + test-tool chmtime =1546362000 $graphdir/to-delete.graph && + test-tool chmtime =1546362001 $graphdir/to-keep.graph && + git commit-graph write --reachable --split --size-multiple=10 \ + --expire-time="2019-01-01 12:00 -05:00" && test_line_count = 1 $graphdir/commit-graph-chain && + test_path_is_missing $graphdir/to-delete.graph && + test_path_is_file $graphdir/to-keep.graph && ls $graphdir/graph-*.graph >graph-files && test_line_count = 3 graph-files ) &&