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[PATCH v6 06/15] promisor-remote: use repository_format_partial_clone

From
Christian Couder <christian.couder@gmail.com>
Date
Jun 25, 2019, 13:40 UTC
Message-ID
<20190625134039.21707-7-chriscool@tuxfamily.org>
In-Reply-To
<20190625134039.21707-1-chriscool@tuxfamily.org>

A remote specified using the extensions.partialClone config option should be considered a promisor remote too.

For simplicity and to make things predictable, this promisor remote should be either always the last one we try to get objects from, or the first one. So it should always be either at the end of the promisor remote list, or at its start.

We decided to make it the last one we try, because it is likely that someone using many promisor remotes is doing so because the other promisor remotes are better for some reason (maybe they are closer or faster for some kind of objects) than the origin, and the origin is likely to be the remote specified by extensions.partialClone.

This justification is not very strong, but one choice had to be made, and anyway the long term plan should be to make the order somehow fully configurable.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 promisor-remote.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
diff --git a/promisor-remote.c b/promisor-remote.c
index 763d98aedd..6a8856f475 100644
--- a/promisor-remote.c
+++ b/promisor-remote.c
@@ -40,6 +40,18 @@ static struct promisor_remote *promisor_remote_lookup(const char *remote_name,
 	return NULL;
 }
 
+static void promisor_remote_move_to_tail(struct promisor_remote *r,
+					 struct promisor_remote *previous)
+{
+	if (previous)
+		previous->next = r->next;
+	else
+		promisors = r->next ? r->next : r;
+	r->next = NULL;
+	*promisors_tail = r;
+	promisors_tail = &r->next;
+}
+
 static int promisor_remote_config(const char *var, const char *value, void *data)
 {
 	const char *name;
@@ -76,6 +88,17 @@ static void promisor_remote_init(void)
 	initialized = 1;
 
 	git_config(promisor_remote_config, NULL);
+
+	if (repository_format_partial_clone) {
+		struct promisor_remote *o, *previous;
+
+		o = promisor_remote_lookup(repository_format_partial_clone,
+					   &previous);
+		if (o)
+			promisor_remote_move_to_tail(o, previous);
+		else
+			promisor_remote_new(repository_format_partial_clone);
+	}
 }
 
 static void promisor_remote_clear(void)
-- 
2.22.0.229.ga13d9ffdf7.dirty
Previous: Christian CouderNext: Christian Couder
Message 6 of 16 in “Many promisor remotes”
  1. 00/15 Many promisor remotesChristian Couder, Jun 25, 2019
  2. 01/15 t0410: remove pipes after git commandsChristian Couder, Jun 25, 2019
  3. 02/15 fetch-object: make functions return an error codeChristian Couder, Jun 25, 2019
  4. 03/15 Add initial support for many promisor remotesChristian Couder, Jun 25, 2019
  5. 05/15 promisor-remote: add promisor_remote_reinit()Christian Couder, Jun 25, 2019
  6. 06/15 promisor-remote: use repository_format_partial_cloneChristian Couder, Jun 25, 2019
  7. 04/15 promisor-remote: implement promisor_remote_get_direct()Christian Couder, Jun 25, 2019
  8. 09/15 builtin/fetch: remove unique promisor remote limitationChristian Couder, Jun 25, 2019
  9. 08/15 promisor-remote: parse remote.*.partialclonefilterChristian Couder, Jun 25, 2019
  10. 10/15 t0410: test fetching from many promisor remotesChristian Couder, Jun 25, 2019
  11. 11/15 partial-clone: add multiple remotes in the docChristian Couder, Jun 25, 2019
  12. 14/15 Move repository_format_partial_clone to promisor-remote.cChristian Couder, Jun 25, 2019
  13. 15/15 Move core_partial_clone_filter_default to promisor-remote.cChristian Couder, Jun 25, 2019
  14. 12/15 remote: add promisor and partial clone config to the docChristian Couder, Jun 25, 2019
  15. 13/15 Remove fetch-object.{c,h} in favor of promisor-remote.{c,h}Christian Couder, Jun 25, 2019
  16. 07/15 Use promisor_remote_get_direct() and has_promisor_remote()Christian Couder, Jun 25, 2019

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