When working with submodules it is easy to forget to push a submodule
to the server but pushing a super-project that contains a commit for
that submodule. The result is that the superproject points at a
submodule commit that is not avaliable on the server.
Check that all submodule commits that are about to be pushed are present
on a remote of the submodule and require forcing if that is not the
case.
This does not guarantee that all submodules a super-project needs will be
available on the server. In that case both the super-project and the
submodules would need an atomic push. This does however prevent the
human error of forgetting to push a submodule.
Signed-off-by: Fredrik Gustafsson <iveqy@xxxxxxxxx>
Mentored-by: Jens Lehmann <Jens.Lehmann@xxxxxx>
Mentored-by: Heiko Voigt <hvoigt@xxxxxxxxxx>
---
submodule.c | 115 ++++++++++++++++++++++++++++++++++++++++
submodule.h | 1 +
t/t5531-deep-submodule-push.sh | 54 ++++++++++++++++++-
transport.c | 8 +++
4 files changed, 175 insertions(+), 3 deletions(-)
diff --git a/submodule.c b/submodule.c
index 1ba9646..3820f1b 100644
--- a/submodule.c
+++ b/submodule.c
@@ -308,6 +308,121 @@ void set_config_fetch_recurse_submodules(int value)
config_fetch_recurse_submodules = value;
}
+static int is_submodule_commit_pushed(const char *path, const unsigned char sha1[20])
+{
+ int is_pushed = 0;
+ if (!add_submodule_odb(path) && lookup_commit_reference(sha1)) {
+ struct child_process cp;
+ const char *argv[] = {"rev-list", NULL, "--not", "--remotes", "-n", "1" , NULL};
+ struct strbuf buf = STRBUF_INIT;
+
+ argv[1] = sha1_to_hex(sha1);
+ memset(&cp, 0, sizeof(cp));
+ cp.argv = argv;
+ cp.env = local_repo_env;
+ cp.git_cmd = 1;
+ cp.no_stdin = 1;
+ cp.out = -1;
+ cp.dir = path;
+ if (!run_command(&cp) && !strbuf_read(&buf, cp.out, 41))
+ is_pushed = 1;
+ close(cp.out);
+ strbuf_release(&buf);
+ }
+ return is_pushed;
+}
+
+static void collect_unpushed_submodules_from_revs(struct diff_queue_struct *q,
+ struct diff_options *options,
+ void *data)
+{
+ int i;
+ int *found_unpushed_submodule = data;
+
+ for (i = 0; i < q->nr; i++) {
+ struct diff_filepair *p = q->queue[i];
+ if (!S_ISGITLINK(p->two->mode))
+ continue;
+ if (!is_submodule_commit_pushed(p->two->path, p->two->sha1)) {
+ *found_unpushed_submodule = 1;
+ break;
+ }
+ }
+}
+
+static int collect_unpushed_submodules_in_tree(const unsigned char *sha1, const char *base, int baselen,
+ const char *pathname, unsigned mode, int stage, void *context)
+{
+ int *found_unpushed_submodules = context;
+ struct strbuf path = STRBUF_INIT;
+
+ strbuf_add(&path,base,strlen(base));
+ strbuf_add(&path,pathname,strlen(pathname));
+
+ if (S_ISGITLINK(mode)) {
+ if(!is_submodule_commit_pushed(path.buf,sha1))
+ *found_unpushed_submodules = 1;
+ return 0;
+ }
+ return READ_TREE_RECURSIVE;
+}
+
+static void parent_commits_pushed(struct commit *commit, struct commit_list *parent, int *found_unpushed_submodule)
+{
+ while (parent) {
+ struct diff_options diff_opts;
+ diff_setup(&diff_opts);
+ DIFF_OPT_SET(&diff_opts, RECURSIVE);
+ diff_opts.output_format |= DIFF_FORMAT_CALLBACK;
+ diff_opts.format_callback = collect_unpushed_submodules_from_revs;
+ diff_opts.format_callback_data = found_unpushed_submodule;
+ if (diff_setup_done(&diff_opts) < 0)
+ die("diff_setup_done failed");
+ diff_tree_sha1(parent->item->object.sha1, commit->object.sha1, "", &diff_opts);
+ diffcore_std(&diff_opts);
+ diff_flush(&diff_opts);
+ parent = parent->next;
+ }
+}
+
+static void tree_commits_pushed(struct commit *commit, int *found_unpushed_submodule)
+{
+ struct tree * tree;
+ struct pathspec pathspec;
+ tree = parse_tree_indirect(commit->object.sha1);
+ init_pathspec(&pathspec,NULL);
+ read_tree_recursive(tree, "", 0, 0, &pathspec, collect_unpushed_submodules_in_tree,
+ found_unpushed_submodule);
+}
+
+int check_for_unpushed_submodule_commits(unsigned char new_sha1[20])
+{
+ struct rev_info rev;
+ struct commit *commit;
+ const char *argv[] = {NULL, NULL, "--not", "--remotes", NULL};
+ int argc = ARRAY_SIZE(argv) - 1;
+ char *sha1_copy;
+ int found_unpushed_submodule = 0;
+
+ init_revisions(&rev, NULL);
+ sha1_copy = xstrdup(sha1_to_hex(new_sha1));
+ argv[1] = sha1_copy;
+ setup_revisions(argc, argv, &rev, NULL);
+ if (prepare_revision_walk(&rev))
+ die("revision walk setup failed");
+
+ while ((commit = get_revision(&rev)) && !found_unpushed_submodule) {
+ struct commit_list *parent = commit->parents;
+ if(parent)
+ parent_commits_pushed(commit,parent,&found_unpushed_submodule);
+ else
+ tree_commits_pushed(commit,&found_unpushed_submodule);
+ }
+
+ free(sha1_copy);
+ return found_unpushed_submodule;
+}
+
static int is_submodule_commit_present(const char *path, unsigned char sha1[20])
{
int is_present = 0;
diff --git a/submodule.h b/submodule.h
index 5350b0d..0a4d395 100644
--- a/submodule.h
+++ b/submodule.h
@@ -29,5 +29,6 @@ int fetch_populated_submodules(int num_options, const char **options,
unsigned is_submodule_modified(const char *path, int ignore_untracked);
int merge_submodule(unsigned char result[20], const char *path, const unsigned char base[20],
const unsigned char a[20], const unsigned char b[20]);
+int check_for_unpushed_submodule_commits(unsigned char sha1[20]);
#endif
diff --git a/t/t5531-deep-submodule-push.sh b/t/t5531-deep-submodule-push.sh
index 0b55466..15474c1 100755
--- a/t/t5531-deep-submodule-push.sh
+++ b/t/t5531-deep-submodule-push.sh
@@ -32,7 +32,7 @@ test_expect_success push '
)
'
-test_expect_failure 'push fails if submodule has no remote' '
+test_expect_success 'push fails if submodule has no remote' '
(
cd work/gar/bage &&
>junk2 &&
@@ -47,7 +47,7 @@ test_expect_failure 'push fails if submodule has no remote' '
)
'
-test_expect_failure 'push fails if submodule commit not on remote' '
+test_expect_success 'push fails if submodule commit not on remote' '
(
cd work/gar &&
git clone --bare bage ../../submodule.git &&
@@ -66,7 +66,7 @@ test_expect_failure 'push fails if submodule commit not on remote' '
)
'
-test_expect_failure 'push succeeds after commit was pushed to remote' '
+test_expect_success 'push succeeds after commit was pushed to remote' '
(
cd work/gar/bage &&
git push origin master
@@ -76,4 +76,52 @@ test_expect_failure 'push succeeds after commit was pushed to remote' '
git push ../pub.git master
)
'
+
+test_expect_success 'push fails when commit on multiple branches if one branch has no remote' '
+ (
+ cd work/gar/bage &&
+ >junk4 &&
+ git add junk4 &&
+ git commit -m "Fourth junk"
+ ) &&
+ (
+ cd work &&
+ git branch branch2 &&
+ git add gar/bage &&
+ git commit -m "Fourth commit for gar/bage" &&
+ git checkout branch2 &&
+ (
+ cd gar/bage &&
+ git checkout HEAD~1
+ ) &&
+ >junk1 &&
+ git add junk1 &&
+ git commit -m "First junk" &&
+ test_must_fail git push ../pub.git
+ )
+'
+
+test_expect_success 'push fails if submodule has no remote and is on the first superproject commit' '
+ mkdir a &&
+ (
+ cd a &&
+ git init --bare
+ ) &&
+ git clone a a1 &&
+ (
+ cd a1 &&
+ mkdir b &&
+ (
+ cd b &&
+ git init &&
+ >junk &&
+ git add junk &&
+ git commit -m "initial"
+ ) &&
+ git add b &&
+ git commit -m "added submodule" &&
+ test_must_fail git push origin master
+ )
+'
+
test_done
diff --git a/transport.c b/transport.c
index c9c8056..e0fd435 100644
--- a/transport.c
+++ b/transport.c
@@ -10,6 +10,7 @@
#include "refs.h"
#include "branch.h"
#include "url.h"
+#include "submodule.h"
/* rsync support */
@@ -1041,6 +1042,13 @@ int transport_push(struct transport *transport,
flags & TRANSPORT_PUSH_MIRROR,
flags & TRANSPORT_PUSH_FORCE);
+ if(!(flags & TRANSPORT_PUSH_FORCE) && !is_bare_repository()) {
+ struct ref *ref = remote_refs;
+ for (; ref; ref = ref->next)
+ if(!is_null_sha1(ref->new_sha1) && check_for_unpushed_submodule_commits(ref->new_sha1))
+ die("There are unpushed submodules, aborting. Use -f to force a push");
+ }
+
push_ret = transport->push_refs(transport, remote_refs, flags);
err = push_had_errors(remote_refs);
ret = push_ret | err;
--
1.7.6.236.g7ad21
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