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From: Christian Couder <christian.couder@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
	"Ben Peart" <Ben.Peart@microsoft.com>,
	"Jonathan Tan" <jonathantanmy@google.com>,
	"Jonathan Nieder" <jrnieder@gmail.com>,
	"Nguyen Thai Ngoc Duy" <pclouds@gmail.com>,
	"Mike Hommey" <mh@glandium.org>,
	"Lars Schneider" <larsxschneider@gmail.com>,
	"Eric Wong" <e@80x24.org>,
	"Christian Couder" <chriscool@tuxfamily.org>,
	"Jeff Hostetler" <jeffhost@microsoft.com>,
	"Eric Sunshine" <sunshine@sunshineco.com>,
	"Beat Bolli" <dev+git@drbeat.li>,
	"SZEDER Gábor" <szeder.dev@gmail.com>,
	"Ramsay Jones" <ramsay@ramsayjones.plus.com>
Subject: [PATCH v5 06/16] promisor-remote: use repository_format_partial_clone
Date: Tue,  9 Apr 2019 18:11:06 +0200	[thread overview]
Message-ID: <20190409161116.30256-7-chriscool@tuxfamily.org> (raw)
In-Reply-To: <20190409161116.30256-1-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 46271eb3e3..737689d044 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)
-- 
2.21.0.750.g68c8ebb2ac


  parent reply	other threads:[~2019-04-09 16:11 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-09 16:11 [PATCH v5 00/16] Many promisor remotes Christian Couder
2019-04-09 16:11 ` [PATCH v5 01/16] t0410: remove pipes after git commands Christian Couder
2019-04-09 16:11 ` [PATCH v5 02/16] fetch-object: make functions return an error code Christian Couder
2019-04-09 16:11 ` [PATCH v5 03/16] Add initial support for many promisor remotes Christian Couder
2019-04-09 16:11 ` [PATCH v5 04/16] promisor-remote: implement promisor_remote_get_direct() Christian Couder
2019-05-30 17:21   ` Derrick Stolee
2019-05-30 20:46     ` Johannes Schindelin
2019-05-30 20:54       ` Derrick Stolee
2019-05-31 11:35         ` Johannes Schindelin
2019-05-31 16:14         ` Junio C Hamano
2019-05-31  5:10     ` Christian Couder
2019-06-25 13:50       ` Christian Couder
2019-04-09 16:11 ` [PATCH v5 05/16] promisor-remote: add promisor_remote_reinit() Christian Couder
2019-04-09 16:11 ` Christian Couder [this message]
2019-04-09 16:11 ` [PATCH v5 07/16] Use promisor_remote_get_direct() and has_promisor_remote() Christian Couder
2019-04-09 16:11 ` [PATCH v5 08/16] diff: use promisor-remote.h instead of fetch-object.h Christian Couder
2019-04-09 16:11 ` [PATCH v5 09/16] promisor-remote: parse remote.*.partialclonefilter Christian Couder
2019-04-09 16:11 ` [PATCH v5 10/16] builtin/fetch: remove unique promisor remote limitation Christian Couder
2019-04-09 16:11 ` [PATCH v5 11/16] t0410: test fetching from many promisor remotes Christian Couder
2019-04-09 16:11 ` [PATCH v5 12/16] partial-clone: add multiple remotes in the doc Christian Couder
2019-04-09 16:11 ` [PATCH v5 13/16] remote: add promisor and partial clone config to " Christian Couder
2019-04-09 16:11 ` [PATCH v5 14/16] Remove fetch-object.{c,h} in favor of promisor-remote.{c,h} Christian Couder
2019-04-09 16:11 ` [PATCH v5 15/16] Move repository_format_partial_clone to promisor-remote.c Christian Couder
2019-04-09 16:11 ` [PATCH v5 16/16] Move core_partial_clone_filter_default " Christian Couder
2019-04-15  9:27 ` [PATCH v5 00/16] Many promisor remotes Junio C Hamano
2019-04-15 10:30   ` Junio C Hamano
2019-04-15 10:39     ` Christian Couder
2019-04-15 10:37   ` Christian Couder

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