[PATCH 0/7] http: minor improvements

[PATCH 0/7] http: minor improvements

[Tay Ray Chuan]

This patch series was generated on top of 'next'. It contains some
general changes to http users.

Some highlights:
  - add non-ff test cases to "dumb" http push test
  - separate init and cleanup of http from http-walker

[PATCH 1/7] t5541-http-push: check that ref is unchanged for non-ff test
[PATCH 2/7] t554[01]-http-push: refactor, add non-ff tests
[PATCH 3/7] http-push: remove useless condition
[PATCH 4/7] http-walker: cleanup more thoroughly
[PATCH 5/7] http: init and cleanup separately from http-walker
[PATCH 6/7] remote-curl: use http_fetch_ref() instead of walker wrapper
[PATCH 7/7] remote-curl: init walker only when needed

 http-fetch.c         |    4 +++-
 http-push.c          |    2 +-
 http-walker.c        |   21 ++++++++++++++++++---
 remote-curl.c        |   21 +++++++++------------
 t/lib-httpd.sh       |   29 +++++++++++++++++++++++++++++
 t/t5540-http-push.sh |    3 +++
 t/t5541-http-push.sh |   22 ++--------------------
 walker.h             |    2 +-
 8 files changed, 66 insertions(+), 38 deletions(-)

--
Cheers,
Ray Chuan

[PATCH 1/7] t5541-http-push: check that ref is unchanged for non-ff test

[Tay Ray Chuan]

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
 t/t5541-http-push.sh |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/t/t5541-http-push.sh b/t/t5541-http-push.sh
index 53f54a2..ff947f3 100755
--- a/t/t5541-http-push.sh
+++ b/t/t5541-http-push.sh
@@ -89,15 +89,17 @@ test_expect_success 'used receive-pack service' '
 '
 
 test_expect_success 'non-fast-forward push fails' '
+	cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
+	HEAD=$(git rev-parse --verify HEAD) &&
+
 	cd "$ROOT_PATH"/test_repo_clone &&
 	git checkout master &&
 	echo "changed" > path2 &&
 	git commit -a -m path2 --amend &&
 
-	HEAD=$(git rev-parse --verify HEAD) &&
 	!(git push -v origin >output 2>&1) &&
 	(cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
-	 test $HEAD != $(git rev-parse --verify HEAD))
+	 test $HEAD = $(git rev-parse --verify HEAD))
 '
 
 test_expect_success 'non-fast-forward push show ref status' '
-- 
1.7.0.26.gbfa16

[PATCH 2/7] t554[01]-http-push: refactor, add non-ff tests

[Tay Ray Chuan]

Move non-fast forward tests to lib-httpd.sh so that we don't have to
duplicate the tests in both t5540 and t5541.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
 t/lib-httpd.sh       |   29 +++++++++++++++++++++++++++++
 t/t5540-http-push.sh |    3 +++
 t/t5541-http-push.sh |   24 ++----------------------
 3 files changed, 34 insertions(+), 22 deletions(-)

diff --git a/t/lib-httpd.sh b/t/lib-httpd.sh
index 28aff88..da4b8d5 100644
--- a/t/lib-httpd.sh
+++ b/t/lib-httpd.sh
@@ -131,3 +131,32 @@ stop_httpd() {
 	"$LIB_HTTPD_PATH" -d "$HTTPD_ROOT_PATH" \
 		-f "$TEST_PATH/apache.conf" $HTTPD_PARA -k stop
 }
+
+test_http_push_nonff() {
+	REMOTE_REPO=$1
+	LOCAL_REPO=$2
+	BRANCH=$3
+
+	test_expect_success 'non-fast-forward push fails' '
+		cd "$REMOTE_REPO" &&
+		HEAD=$(git rev-parse --verify HEAD) &&
+
+		cd "$LOCAL_REPO" &&
+		git checkout $BRANCH &&
+		echo "changed" > path2 &&
+		git commit -a -m path2 --amend &&
+
+		!(git push -v origin >output 2>&1) &&
+		(cd "$REMOTE_REPO" &&
+		 test $HEAD = $(git rev-parse --verify HEAD))
+	'
+
+	test_expect_success 'non-fast-forward push show ref status' '
+		grep "^ ! \[rejected\][ ]*$BRANCH -> $BRANCH (non-fast-forward)$" output
+	'
+
+	test_expect_success 'non-fast-forward push shows help message' '
+		grep "To prevent you from losing history, non-fast-forward updates were rejected" \
+			output
+	'
+}
diff --git a/t/t5540-http-push.sh b/t/t5540-http-push.sh
index bb18f8b..37fe875 100755
--- a/t/t5540-http-push.sh
+++ b/t/t5540-http-push.sh
@@ -137,6 +137,9 @@ test_expect_success 'PUT and MOVE sends object to URLs with SHA-1 hash suffix' '
 
 '
 
+test_http_push_nonff "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git \
+	"$ROOT_PATH"/test_repo_clone master
+
 stop_httpd
 
 test_done
diff --git a/t/t5541-http-push.sh b/t/t5541-http-push.sh
index ff947f3..795dc2b 100755
--- a/t/t5541-http-push.sh
+++ b/t/t5541-http-push.sh
@@ -88,28 +88,8 @@ test_expect_success 'used receive-pack service' '
 	test_cmp exp act
 '
 
-test_expect_success 'non-fast-forward push fails' '
-	cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
-	HEAD=$(git rev-parse --verify HEAD) &&
-
-	cd "$ROOT_PATH"/test_repo_clone &&
-	git checkout master &&
-	echo "changed" > path2 &&
-	git commit -a -m path2 --amend &&
-
-	!(git push -v origin >output 2>&1) &&
-	(cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
-	 test $HEAD = $(git rev-parse --verify HEAD))
-'
-
-test_expect_success 'non-fast-forward push show ref status' '
-	grep "^ ! \[rejected\][ ]*master -> master (non-fast-forward)$" output
-'
-
-test_expect_success 'non-fast-forward push shows help message' '
-	grep "To prevent you from losing history, non-fast-forward updates were rejected" \
-		output
-'
+test_http_push_nonff "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git \
+	"$ROOT_PATH"/test_repo_clone master
 
 test_expect_success 'push fails for non-fast-forward refs unmatched by remote helper' '
 	# create a dissimilarly-named remote ref so that git is unable to match the
-- 
1.7.0.26.gbfa16

[PATCH 3/7] http-push: remove useless condition

[Tay Ray Chuan]

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
 http-push.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/http-push.c b/http-push.c
index 432b20f..415b1ab 100644
--- a/http-push.c
+++ b/http-push.c
@@ -1965,7 +1965,7 @@ int main(int argc, char **argv)
 		}
 
 		if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
-			if (push_verbosely || 1)
+			if (push_verbosely)
 				fprintf(stderr, "'%s': up-to-date\n", ref->name);
 			if (helper_status)
 				printf("ok %s up to date\n", ref->name);
-- 
1.7.0.26.gbfa16

[PATCH 4/7] http-walker: cleanup more thoroughly

[Tay Ray Chuan]

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
 http-walker.c |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/http-walker.c b/http-walker.c
index 700bc13..508e355 100644
--- a/http-walker.c
+++ b/http-walker.c
@@ -543,6 +543,23 @@ static int fetch_ref(struct walker *walker, struct ref *ref)
 
 static void cleanup(struct walker *walker)
 {
+	struct walker_data *data = walker->data;
+	struct alt_base *alt, *alt_next;
+
+	if (data) {
+		alt = data->alt;
+		while (alt) {
+			alt_next = alt->next;
+
+			free(alt->base);
+			free(alt);
+
+			alt = alt_next;
+		}
+		free(data);
+		walker->data = NULL;
+	}
+
 	http_cleanup();
 }
 
-- 
1.7.0.26.gbfa16

[PATCH 5/7] http: init and cleanup separately from http-walker

[Tay Ray Chuan]

Previously, all our http operations were done with http-walker. With the
new remote-curl helper, we find ourselves using http methods outside of
http-walker - for example, fetching info/refs.

Accomodate this by separating http_init() and http_cleanup() invocations
from http-walker.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
 http-fetch.c  |    5 ++++-
 http-walker.c |    4 +---
 remote-curl.c |    7 ++++++-
 walker.h      |    2 +-
 4 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/http-fetch.c b/http-fetch.c
index ffd0ad7..e05b23a 100644
--- a/http-fetch.c
+++ b/http-fetch.c
@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "exec_cmd.h"
+#include "http.h"
 #include "walker.h"
 
 static const char http_fetch_usage[] = "git http-fetch "
@@ -69,7 +70,8 @@ int main(int argc, const char **argv)
 		url = rewritten_url;
 	}
 
-	walker = get_http_walker(url, NULL);
+	http_init(NULL);
+	walker = get_http_walker(url);
 	walker->get_tree = get_tree;
 	walker->get_history = get_history;
 	walker->get_all = get_all;
@@ -88,6 +90,7 @@ int main(int argc, const char **argv)
 "status code.  Suggest running 'git fsck'.\n");
 	}
 
+	http_cleanup();
 	walker_free(walker);
 
 	free(rewritten_url);
diff --git a/http-walker.c b/http-walker.c
index 508e355..bc39451 100644
--- a/http-walker.c
+++ b/http-walker.c
@@ -563,14 +563,12 @@ static void cleanup(struct walker *walker)
 	http_cleanup();
 }
 
-struct walker *get_http_walker(const char *url, struct remote *remote)
+struct walker *get_http_walker(const char *url)
 {
 	char *s;
 	struct walker_data *data = xmalloc(sizeof(struct walker_data));
 	struct walker *walker = xmalloc(sizeof(struct walker));
 
-	http_init(remote);
-
 	data->alt = xmalloc(sizeof(*data->alt));
 	data->alt->base = xmalloc(strlen(url) + 1);
 	strcpy(data->alt->base, url);
diff --git a/remote-curl.c b/remote-curl.c
index d388120..1e13fb5 100644
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -25,7 +25,7 @@ static struct options options;
 static void init_walker(void)
 {
 	if (!walker)
-		walker = get_http_walker(url, remote);
+		walker = get_http_walker(url);
 }
 
 static int set_option(const char *name, const char *value)
@@ -811,6 +811,8 @@ int main(int argc, const char **argv)
 		url = remote->url[0];
 	}
 
+	http_init(remote);
+
 	do {
 		if (strbuf_getline(&buf, stdin, '\n') == EOF)
 			break;
@@ -856,5 +858,8 @@ int main(int argc, const char **argv)
 		}
 		strbuf_reset(&buf);
 	} while (1);
+
+	http_cleanup();
+
 	return 0;
 }
diff --git a/walker.h b/walker.h
index 8a149e1..95e5765 100644
--- a/walker.h
+++ b/walker.h
@@ -34,6 +34,6 @@ int walker_fetch(struct walker *impl, int targets, char **target,
 
 void walker_free(struct walker *walker);
 
-struct walker *get_http_walker(const char *url, struct remote *remote);
+struct walker *get_http_walker(const char *url);
 
 #endif /* WALKER_H */
-- 
1.7.0.26.gbfa16

[PATCH 6/7] remote-curl: use http_fetch_ref() instead of walker wrapper

[Tay Ray Chuan]

The http-walker implementation of walker->fetch_ref() doesn't do
anything special compared to http_fetch_ref() anyway.

Remove init_walker() invocation before fetching the ref, since we aren't
using the walker wrapper and don't need a walker instance anymore.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
 remote-curl.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/remote-curl.c b/remote-curl.c
index 1e13fb5..5ace99e 100644
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -250,9 +250,8 @@ static struct ref *parse_info_refs(struct discovery *heads)
 		i++;
 	}
 
-	init_walker();
 	ref = alloc_ref("HEAD");
-	if (!walker->fetch_ref(walker, ref) &&
+	if (!http_fetch_ref(url, ref) &&
 	    !resolve_remote_symref(ref, refs)) {
 		ref->next = refs;
 		refs = ref;
-- 
1.7.0.26.gbfa16

[PATCH 7/7] remote-curl: init walker only when needed

[Tay Ray Chuan]

Invoke get_http_walker() only when fetching with the dumb protocol.
Additionally, add an invocation to walker_free() after we're done using
the walker.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
 remote-curl.c |   13 +++----------
 1 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/remote-curl.c b/remote-curl.c
index 5ace99e..b76bfcb 100644
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -10,7 +10,6 @@
 
 static struct remote *remote;
 static const char *url;
-static struct walker *walker;
 
 struct options {
 	int verbosity;
@@ -22,12 +21,6 @@ struct options {
 };
 static struct options options;
 
-static void init_walker(void)
-{
-	if (!walker)
-		walker = get_http_walker(url);
-}
-
 static int set_option(const char *name, const char *value)
 {
 	if (!strcmp(name, "verbosity")) {
@@ -119,7 +112,6 @@ static struct discovery* discover_refs(const char *service)
 	}
 	refs_url = strbuf_detach(&buffer, NULL);
 
-	init_walker();
 	http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
 
 	/* try again with "plain" url (no ? or & appended) */
@@ -501,7 +493,6 @@ static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
 	struct child_process client;
 	int err = 0;
 
-	init_walker();
 	memset(&client, 0, sizeof(client));
 	client.in = -1;
 	client.out = -1;
@@ -553,6 +544,7 @@ static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
 
 static int fetch_dumb(int nr_heads, struct ref **to_fetch)
 {
+	struct walker *walker;
 	char **targets = xmalloc(nr_heads * sizeof(char*));
 	int ret, i;
 
@@ -561,13 +553,14 @@ static int fetch_dumb(int nr_heads, struct ref **to_fetch)
 	for (i = 0; i < nr_heads; i++)
 		targets[i] = xstrdup(sha1_to_hex(to_fetch[i]->old_sha1));
 
-	init_walker();
+	walker = get_http_walker(url);
 	walker->get_all = 1;
 	walker->get_tree = 1;
 	walker->get_history = 1;
 	walker->get_verbosely = options.verbosity >= 3;
 	walker->get_recover = 0;
 	ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
+	walker_free(walker);
 
 	for (i = 0; i < nr_heads; i++)
 		free(targets[i]);
-- 
1.7.0.26.gbfa16

Re: [PATCH 5/7] http: init and cleanup separately from http-walker

[Clemens Buchacher]

On Sun, Feb 21, 2010 at 11:08:26AM +0800, Tay Ray Chuan wrote:
> diff --git a/http-fetch.c b/http-fetch.c
[...]
> @@ -69,7 +70,8 @@ int main(int argc, const char **argv)
>  		url = rewritten_url;
>  	}
>  
> -	walker = get_http_walker(url, NULL);
> +	http_init(NULL);
> +	walker = get_http_walker(url);
>  	walker->get_tree = get_tree;
>  	walker->get_history = get_history;
>  	walker->get_all = get_all;

You changed the order of get_http_walker and http_init. But

        add_fill_function(walker, (int (*)(void *)) fill_active_slot);

already deals with curl functionality. So even though I think it technically
doesn't break, I would prefer if this dependency were still expressed in the
code.

> @@ -88,6 +90,7 @@ int main(int argc, const char **argv)
>  "status code.  Suggest running 'git fsck'.\n");
>  	}
>  
> +	http_cleanup();
>  	walker_free(walker);
>  
>  	free(rewritten_url);

Same as above.

Otherwise the series looks good to me.

Liked-by: Clemens Buchacher <drizzd@aon.at>

Clemens

Re: [PATCH 3/7] http-push: remove useless condition

[Clemens Buchacher]

On Sun, Feb 21, 2010 at 11:08:24AM +0800, Tay Ray Chuan wrote:
> -			if (push_verbosely || 1)
> +			if (push_verbosely)
>  				fprintf(stderr, "'%s': up-to-date\n", ref->name);

Just a minor nit-pick. If you end up doing a resend, maybe you could change
the commit message to this one, since you're actually adding a condition
that was previously disabled, not removing it.

Clemens

Re: [PATCH 5/7] http: init and cleanup separately from http-walker

[Clemens Buchacher]

On Sun, Feb 21, 2010 at 11:38:20AM +0100, Clemens Buchacher wrote:
> On Sun, Feb 21, 2010 at 11:08:26AM +0800, Tay Ray Chuan wrote:
> > diff --git a/http-fetch.c b/http-fetch.c
> [...]
> > @@ -69,7 +70,8 @@ int main(int argc, const char **argv)
> >  		url = rewritten_url;
> >  	}
> >  
> > -	walker = get_http_walker(url, NULL);
> > +	http_init(NULL);
> > +	walker = get_http_walker(url);
> >  	walker->get_tree = get_tree;
> >  	walker->get_history = get_history;
> >  	walker->get_all = get_all;
> 
> You changed the order of get_http_walker and http_init. But

Umh, actually you didn't. Sorry about that.

> 
>         add_fill_function(walker, (int (*)(void *)) fill_active_slot);
> 
> already deals with curl functionality. So even though I think it technically
> doesn't break, I would prefer if this dependency were still expressed in the
> code.
> 
> > @@ -88,6 +90,7 @@ int main(int argc, const char **argv)
> >  "status code.  Suggest running 'git fsck'.\n");
> >  	}
> >  
> > +	http_cleanup();
> >  	walker_free(walker);
> >  
> >  	free(rewritten_url);
> 
> Same as above.

But I think this is still valid.

Clemens

Re: [PATCH 3/7] http-push: remove useless condition

[Tay Ray Chuan]

Hi,

On Sun, Feb 21, 2010 at 6:40 PM, Clemens Buchacher <drizzd@aon.at> wrote:
> On Sun, Feb 21, 2010 at 11:08:24AM +0800, Tay Ray Chuan wrote:
>> -                     if (push_verbosely || 1)
>> +                     if (push_verbosely)
>>                               fprintf(stderr, "'%s': up-to-date\n", ref->name);
>
> Just a minor nit-pick. If you end up doing a resend, maybe you could change
> the commit message to this one, since you're actually adding a condition
> that was previously disabled, not removing it.

yes, that makes sense..

-- 
Cheers,
Ray Chuan

Re: [PATCH 5/7] http: init and cleanup separately from http-walker

[Tay Ray Chuan]

Hi,

On Sun, Feb 21, 2010 at 6:57 PM, Clemens Buchacher <drizzd@aon.at> wrote:
> On Sun, Feb 21, 2010 at 11:38:20AM +0100, Clemens Buchacher wrote:
>> On Sun, Feb 21, 2010 at 11:08:26AM +0800, Tay Ray Chuan wrote:
>> > diff --git a/http-fetch.c b/http-fetch.c
>> [...]
>>
>>         add_fill_function(walker, (int (*)(void *)) fill_active_slot);
>>
>> already deals with curl functionality. So even though I think it technically
>> doesn't break, I would prefer if this dependency were still expressed in the
>> code.
>>
>> > @@ -88,6 +90,7 @@ int main(int argc, const char **argv)
>> >  "status code.  Suggest running 'git fsck'.\n");
>> >     }
>> >
>> > +   http_cleanup();
>> >     walker_free(walker);
>> >
>> >     free(rewritten_url);
>>
>> Same as above.
>
> But I think this is still valid.

regarding the order of invocation - I could put http_cleanup() after
walker_free().

Perhaps I can express this dependency with a comment in that area in
http-fetch.c and/or http-walker::cleanup()?

  Don't invoke http_cleanup() yet, we might still need to perform http
operations in http-walker.

(Separately, on re-reading the code, I noticed that
http-walker::cleanup() calls http_cleanup() again, so I dropped that
invocation from http-walker.)

-- 
Cheers,
Ray Chuan