зеркало из https://github.com/microsoft/git.git
Change {pre,post}-receive hooks to use stdin
Sergey Vlasov, Andy Parkins and Alex Riesen all pointed out that it is possible for a single invocation of receive-pack to be given more refs than the OS might allow us to pass as command line parameters to a single hook invocation. We don't want to break these up into multiple invocations (like xargs might do) as that makes it impossible for the pre-receive hook to verify multiple related ref updates occur at the same time, and it makes it harder for post-receive to send out a single batch notification. Instead we pass the reference data on a pipe connected to the hook's stdin, supplying one ref per line to the hook. This way a single hook invocation can obtain an infinite amount of ref data, without bumping into any operating system limits. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Shawn O. Pearce
Junio C Hamano
Родитель
1d9e8b56fe
Коммит
f43cd49fb8
|
|
@ -40,13 +40,13 @@ OPTIONS
|
|||
pre-receive Hook
|
||||
----------------
|
||||
Before any ref is updated, if $GIT_DIR/hooks/pre-receive file exists
|
||||
and is executable, it will be invoked once, with three parameters
|
||||
per ref to be updated:
|
||||
and is executable, it will be invoked once with no parameters. The
|
||||
standard input of the hook will be one line per ref to be updated:
|
||||
|
||||
$GIT_DIR/hooks/pre-receive (refname sha1-old sha1-new)+
|
||||
sha1-old SP sha1-new SP refname LF
|
||||
|
||||
The refname parameter is relative to $GIT_DIR; e.g. for the master
|
||||
head this is "refs/heads/master". The two sha1 arguments after
|
||||
The refname value is relative to $GIT_DIR; e.g. for the master
|
||||
head this is "refs/heads/master". The two sha1 values before
|
||||
each refname are the object names for the refname before and after
|
||||
the update. Refs to be created will have sha1-old equal to 0{40},
|
||||
while refs to be deleted will have sha1-new equal to 0{40}, otherwise
|
||||
|
|
@ -86,13 +86,14 @@ post-receive Hook
|
|||
-----------------
|
||||
After all refs were updated (or attempted to be updated), if any
|
||||
ref update was successful, and if $GIT_DIR/hooks/post-receive
|
||||
file exists and is executable, it will be invoke once with three
|
||||
parameters for each successfully updated ref:
|
||||
file exists and is executable, it will be invoke once with no
|
||||
parameters. The standard input of the hook will be one line
|
||||
for each successfully updated ref:
|
||||
|
||||
$GIT_DIR/hooks/post-receive (refname sha1-old sha1-new)+
|
||||
sha1-old SP sha1-new SP refname LF
|
||||
|
||||
The refname parameter is relative to $GIT_DIR; e.g. for the master
|
||||
head this is "refs/heads/master". The two sha1 arguments after
|
||||
The refname value is relative to $GIT_DIR; e.g. for the master
|
||||
head this is "refs/heads/master". The two sha1 values before
|
||||
each refname are the object names for the refname before and after
|
||||
the update. Refs that were created will have sha1-old equal to
|
||||
0{40}, while refs that were deleted will have sha1-new equal to
|
||||
|
|
@ -105,18 +106,17 @@ ref listing the commits pushed to the repository:
|
|||
|
||||
#!/bin/sh
|
||||
# mail out commit update information.
|
||||
while test $# -gt 0
|
||||
while read oval nval ref
|
||||
do
|
||||
if expr "$2" : '0*$' >/dev/null
|
||||
if expr "$oval" : '0*$' >/dev/null
|
||||
then
|
||||
echo "Created a new ref, with the following commits:"
|
||||
git-rev-list --pretty "$2"
|
||||
git-rev-list --pretty "$nval"
|
||||
else
|
||||
echo "New commits:"
|
||||
git-rev-list --pretty "$3" "^$2"
|
||||
git-rev-list --pretty "$nval" "^$oval"
|
||||
fi |
|
||||
mail -s "Changes to ref $1" commit-list@mydomain
|
||||
shift; shift; shift; # discard this ref's args
|
||||
mail -s "Changes to ref $ref" commit-list@mydomain
|
||||
done
|
||||
exit 0
|
||||
|
||||
|
|
|
|||
|
|
@ -79,6 +79,8 @@ static int hook_status(int code, const char *hook_name)
|
|||
return error("hook fork failed");
|
||||
case -ERR_RUN_COMMAND_EXEC:
|
||||
return error("hook execute failed");
|
||||
case -ERR_RUN_COMMAND_PIPE:
|
||||
return error("hook pipe failed");
|
||||
case -ERR_RUN_COMMAND_WAITPID:
|
||||
return error("waitpid failed");
|
||||
case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
|
||||
|
|
@ -93,44 +95,44 @@ static int hook_status(int code, const char *hook_name)
|
|||
}
|
||||
}
|
||||
|
||||
static int run_hook(const char *hook_name,
|
||||
struct command *first_cmd,
|
||||
int single)
|
||||
static int run_hook(const char *hook_name)
|
||||
{
|
||||
static char buf[sizeof(commands->old_sha1) * 2 + PATH_MAX + 4];
|
||||
struct command *cmd;
|
||||
int argc, code;
|
||||
const char **argv;
|
||||
struct child_process proc;
|
||||
const char *argv[2];
|
||||
int have_input = 0, code;
|
||||
|
||||
for (argc = 0, cmd = first_cmd; cmd; cmd = cmd->next) {
|
||||
for (cmd = commands; !have_input && cmd; cmd = cmd->next) {
|
||||
if (!cmd->error_string)
|
||||
argc += 3;
|
||||
if (single)
|
||||
break;
|
||||
have_input = 1;
|
||||
}
|
||||
|
||||
if (!argc || access(hook_name, X_OK) < 0)
|
||||
if (!have_input || access(hook_name, X_OK) < 0)
|
||||
return 0;
|
||||
|
||||
argv = xmalloc(sizeof(*argv) * (2 + argc));
|
||||
argv[0] = hook_name;
|
||||
for (argc = 1, cmd = first_cmd; cmd; cmd = cmd->next) {
|
||||
argv[1] = NULL;
|
||||
|
||||
memset(&proc, 0, sizeof(proc));
|
||||
proc.argv = argv;
|
||||
proc.in = -1;
|
||||
proc.stdout_to_stderr = 1;
|
||||
|
||||
code = start_command(&proc);
|
||||
if (code)
|
||||
return hook_status(code, hook_name);
|
||||
for (cmd = commands; cmd; cmd = cmd->next) {
|
||||
if (!cmd->error_string) {
|
||||
argv[argc++] = xstrdup(cmd->ref_name);
|
||||
argv[argc++] = xstrdup(sha1_to_hex(cmd->old_sha1));
|
||||
argv[argc++] = xstrdup(sha1_to_hex(cmd->new_sha1));
|
||||
size_t n = snprintf(buf, sizeof(buf), "%s %s %s\n",
|
||||
sha1_to_hex(cmd->old_sha1),
|
||||
sha1_to_hex(cmd->new_sha1),
|
||||
cmd->ref_name);
|
||||
if (write_in_full(proc.in, buf, n) != n)
|
||||
break;
|
||||
}
|
||||
if (single)
|
||||
break;
|
||||
}
|
||||
argv[argc] = NULL;
|
||||
|
||||
code = run_command_v_opt(argv,
|
||||
RUN_COMMAND_NO_STDIN | RUN_COMMAND_STDOUT_TO_STDERR);
|
||||
while (--argc > 0)
|
||||
free((char*)argv[argc]);
|
||||
free(argv);
|
||||
|
||||
return hook_status(code, hook_name);
|
||||
return hook_status(finish_command(&proc), hook_name);
|
||||
}
|
||||
|
||||
static int run_update_hook(struct command *cmd)
|
||||
|
|
@ -265,7 +267,7 @@ static void execute_commands(const char *unpacker_error)
|
|||
return;
|
||||
}
|
||||
|
||||
if (run_hook(pre_receive_hook, commands, 0)) {
|
||||
if (run_hook(pre_receive_hook)) {
|
||||
while (cmd) {
|
||||
cmd->error_string = "pre-receive hook declined";
|
||||
cmd = cmd->next;
|
||||
|
|
@ -520,7 +522,7 @@ int main(int argc, char **argv)
|
|||
unlink(pack_lockfile);
|
||||
if (report_status)
|
||||
report(unpack_status);
|
||||
run_hook(post_receive_hook, commands, 0);
|
||||
run_hook(post_receive_hook);
|
||||
run_update_post_hook(commands);
|
||||
}
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -25,8 +25,8 @@ test_expect_success setup '
|
|||
|
||||
cat >victim/.git/hooks/pre-receive <<'EOF'
|
||||
#!/bin/sh
|
||||
echo "$@" >>$GIT_DIR/pre-receive.args
|
||||
read x; printf "$x" >$GIT_DIR/pre-receive.stdin
|
||||
printf "$@" >>$GIT_DIR/pre-receive.args
|
||||
cat - >$GIT_DIR/pre-receive.stdin
|
||||
echo STDOUT pre-receive
|
||||
echo STDERR pre-receive >&2
|
||||
EOF
|
||||
|
|
@ -44,8 +44,8 @@ chmod u+x victim/.git/hooks/update
|
|||
|
||||
cat >victim/.git/hooks/post-receive <<'EOF'
|
||||
#!/bin/sh
|
||||
echo "$@" >>$GIT_DIR/post-receive.args
|
||||
read x; printf "$x" >$GIT_DIR/post-receive.stdin
|
||||
printf "$@" >>$GIT_DIR/post-receive.args
|
||||
cat - >$GIT_DIR/post-receive.stdin
|
||||
echo STDOUT post-receive
|
||||
echo STDERR post-receive >&2
|
||||
EOF
|
||||
|
|
@ -80,11 +80,10 @@ test_expect_success 'hooks ran' '
|
|||
test -f victim/.git/post-update.stdin
|
||||
'
|
||||
|
||||
test_expect_success 'pre-receive hook arguments' '
|
||||
echo \
|
||||
refs/heads/master $commit0 $commit1 \
|
||||
refs/heads/tofail $commit1 $commit0 \
|
||||
| git diff - victim/.git/pre-receive.args
|
||||
test_expect_success 'pre-receive hook input' '
|
||||
(echo $commit0 $commit1 refs/heads/master;
|
||||
echo $commit1 $commit0 refs/heads/tofail
|
||||
) | git diff - victim/.git/pre-receive.stdin
|
||||
'
|
||||
|
||||
test_expect_success 'update hook arguments' '
|
||||
|
|
@ -93,9 +92,9 @@ test_expect_success 'update hook arguments' '
|
|||
) | git diff - victim/.git/update.args
|
||||
'
|
||||
|
||||
test_expect_success 'post-receive hook arguments' '
|
||||
echo refs/heads/master $commit0 $commit1 |
|
||||
git diff - victim/.git/post-receive.args
|
||||
test_expect_success 'post-receive hook input' '
|
||||
echo $commit0 $commit1 refs/heads/master |
|
||||
git diff - victim/.git/post-receive.stdin
|
||||
'
|
||||
|
||||
test_expect_success 'post-update hook arguments' '
|
||||
|
|
@ -104,12 +103,15 @@ test_expect_success 'post-update hook arguments' '
|
|||
'
|
||||
|
||||
test_expect_success 'all hook stdin is /dev/null' '
|
||||
! test -s victim/.git/pre-receive.stdin &&
|
||||
! test -s victim/.git/update.stdin &&
|
||||
! test -s victim/.git/post-receive.stdin &&
|
||||
! test -s victim/.git/post-update.stdin
|
||||
'
|
||||
|
||||
test_expect_success 'all *-receive hook args are empty' '
|
||||
! test -s victim/.git/pre-receive.args &&
|
||||
! test -s victim/.git/post-receive.args
|
||||
'
|
||||
|
||||
test_expect_failure 'send-pack produced no output' '
|
||||
test -s send.out
|
||||
'
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче