[PATCH v3 8/8] commit-graph: drop COMMIT_GRAPH_WRITE_CHECK_OIDS flag
From: Taylor Blau <hidden>
Date: 2020-05-13 21:59:59
Subsystem:
documentation, the rest · Maintainers:
Jonathan Corbet, Linus Torvalds
Since 7c5c9b9c57 (commit-graph: error out on invalid commit oids in
'write --stdin-commits', 2019-08-05), the commit-graph builtin dies on
receiving non-commit OIDs as input to '--stdin-commits'.
This behavior can be cumbersome to work around in, say, the case of
piping 'git for-each-ref' to 'git commit-graph write --stdin-commits' if
the caller does not want to cull out non-commits themselves. In this
situation, it would be ideal if 'git commit-graph write' wrote the graph
containing the inputs that did pertain to commits, and silently ignored
the remainder of the input.
Some options have been proposed to the effect of '--[no-]check-oids'
which would allow callers to have the commit-graph builtin do just that.
After some discussion, it is difficult to imagine a caller who wouldn't
want to pass '--no-check-oids', suggesting that we should get rid of the
behavior of complaining about non-commit inputs altogether.
If callers do wish to retain this behavior, they can easily work around
this change by doing the following:
git for-each-ref --format='%(objectname) %(objecttype) %(*objecttype)' |
awk '
!/commit/ { print "not-a-commit:"$1 }
/commit/ { print $1 }
' |
git commit-graph write --stdin-commits
To make it so that valid OIDs that refer to non-existent objects are
indeed an error after loosening the error handling, perform an extra
lookup to make sure that object indeed exists before sending it to the
commit-graph internals.
Helped-by: Jeff King [off-list ref]
Signed-off-by: Taylor Blau <redacted>
---
Documentation/git-commit-graph.txt | 6 ++++--
builtin/commit-graph.c | 15 ++++++++-------
commit-graph.c | 2 --
commit-graph.h | 4 +---
t/t5318-commit-graph.sh | 15 +++++++++++----
5 files changed, 24 insertions(+), 18 deletions(-)
diff --git a/Documentation/git-commit-graph.txt b/Documentation/git-commit-graph.txt
index 53a650225a..fcac7d12e1 100644
--- a/Documentation/git-commit-graph.txt
+++ b/Documentation/git-commit-graph.txt@@ -47,8 +47,10 @@ with `--stdin-commits` or `--reachable`.) + With the `--stdin-commits` option, generate the new commit graph by walking commits starting at the commits specified in stdin as a list -of OIDs in hex, one OID per line. (Cannot be combined with -`--stdin-packs` or `--reachable`.) +of OIDs in hex, one OID per line. OIDs that resolve to non-commits +(either directly, or by peeling tags) are silently ignored. OIDs that +are malformed, or do not exist generate an error. (Cannot be combined +with `--stdin-packs` or `--reachable`.) + With the `--reachable` option, generate the new commit graph by walking commits starting at all refs. (Cannot be combined with `--stdin-commits`
diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index 83c55d9227..d3bd1c31c9 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c@@ -7,6 +7,7 @@ #include "commit-graph.h" #include "object-store.h" #include "progress.h" +#include "tag.h" static char const * const builtin_commit_graph_usage[] = { N_("git commit-graph verify [--object-dir <objdir>] [--shallow] [--[no-]progress]"),
@@ -142,18 +143,19 @@ static int write_option_parse_split(const struct option *opt, const char *arg, static int read_one_commit(struct oidset *commits, struct progress *progress, const char *hash) { - struct commit *result; + struct object *result; struct object_id oid; const char *end; if (parse_oid_hex(hash, &oid, &end)) return error(_("unexpected non-hex object ID: %s"), hash); - result = lookup_commit_reference_gently(the_repository, &oid, 1); - if (result) - oidset_insert(commits, &result->object.oid); - else - return error(_("invalid commit object id: %s"), hash); + result = deref_tag(the_repository, parse_object(the_repository, &oid), + NULL, 0); + if (!result) + return error(_("invalid object: %s"), hash); + else if (object_as_type(the_repository, result, OBJ_COMMIT, 1)) + oidset_insert(commits, &result->oid); display_progress(progress, oidset_size(commits));
@@ -240,7 +242,6 @@ static int graph_write(int argc, const char **argv) strbuf_detach(&buf, NULL)); } else if (opts.stdin_commits) { oidset_init(&commits, 0); - flags |= COMMIT_GRAPH_WRITE_CHECK_OIDS; if (opts.progress) progress = start_delayed_progress( _("Collecting commits from input"), 0);
diff --git a/commit-graph.c b/commit-graph.c
index 3ea70e6676..2ff042fbf4 100644
--- a/commit-graph.c
+++ b/commit-graph.c@@ -881,7 +881,6 @@ struct write_commit_graph_context { unsigned append:1, report_progress:1, split:1, - check_oids:1, changed_paths:1, order_by_pack:1;
@@ -2011,7 +2010,6 @@ int write_commit_graph(struct object_directory *odb, ctx->append = flags & COMMIT_GRAPH_WRITE_APPEND ? 1 : 0; ctx->report_progress = flags & COMMIT_GRAPH_WRITE_PROGRESS ? 1 : 0; ctx->split = flags & COMMIT_GRAPH_WRITE_SPLIT ? 1 : 0; - ctx->check_oids = flags & COMMIT_GRAPH_WRITE_CHECK_OIDS ? 1 : 0; ctx->split_opts = split_opts; ctx->changed_paths = flags & COMMIT_GRAPH_WRITE_BLOOM_FILTERS ? 1 : 0; ctx->total_bloom_filter_data_size = 0;
diff --git a/commit-graph.h b/commit-graph.h
index 4212766a4f..3ba0da1e5f 100644
--- a/commit-graph.h
+++ b/commit-graph.h@@ -91,9 +91,7 @@ enum commit_graph_write_flags { COMMIT_GRAPH_WRITE_APPEND = (1 << 0), COMMIT_GRAPH_WRITE_PROGRESS = (1 << 1), COMMIT_GRAPH_WRITE_SPLIT = (1 << 2), - /* Make sure that each OID in the input is a valid commit OID. */ - COMMIT_GRAPH_WRITE_CHECK_OIDS = (1 << 3), - COMMIT_GRAPH_WRITE_BLOOM_FILTERS = (1 << 4), + COMMIT_GRAPH_WRITE_BLOOM_FILTERS = (1 << 3), }; enum commit_graph_split_flags {
diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
index 255e3bb1c9..a79c624875 100755
--- a/t/t5318-commit-graph.sh
+++ b/t/t5318-commit-graph.sh@@ -88,11 +88,18 @@ graph_read_expect() { test_expect_success 'exit with correct error on bad input to --stdin-commits' ' cd "$TRASH_DIRECTORY/full" && - echo HEAD | test_expect_code 1 git commit-graph write --stdin-commits 2>stderr && + # invalid, non-hex OID + echo HEAD >in && + test_expect_code 1 git commit-graph write --stdin-commits <in 2>stderr && test_i18ngrep "unexpected non-hex object ID: HEAD" stderr && - # valid tree OID, but not a commit OID - git rev-parse HEAD^{tree} | test_expect_code 1 git commit-graph write --stdin-commits 2>stderr && - test_i18ngrep "invalid commit object id" stderr + # non-existent OID + echo $ZERO_OID >in && + test_expect_code 1 git commit-graph write --stdin-commits <in 2>stderr && + test_i18ngrep "invalid object" stderr && + # valid commit and tree OID + git rev-parse HEAD HEAD^{tree} >in && + git commit-graph write --stdin-commits <in && + graph_read_expect 3 ' test_expect_success 'write graph' '
--
2.26.0.113.ge9739cdccc