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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>,
	Stefan Beller <sbeller@google.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>,
	Christian Couder <christian.couder@gmail.com>
Subject: [PATCH v3 02/11] Add initial support for many promisor remotes
Date: Tue, 12 Mar 2019 14:29:50 +0100	[thread overview]
Message-ID: <20190312132959.11764-3-chriscool@tuxfamily.org> (raw)
In-Reply-To: <20190312132959.11764-1-chriscool@tuxfamily.org>

From: Christian Couder <christian.couder@gmail.com>

The promisor-remote.{c,h} files will contain functions to
manage many promisor remotes.

We expect that there will not be a lot of promisor remotes,
so it is ok to use a simple linked list to manage them.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 Makefile          |   1 +
 promisor-remote.c | 100 ++++++++++++++++++++++++++++++++++++++++++++++
 promisor-remote.h |  17 ++++++++
 3 files changed, 118 insertions(+)
 create mode 100644 promisor-remote.c
 create mode 100644 promisor-remote.h

diff --git a/Makefile b/Makefile
index 537493822b..4f24ccb3dc 100644
--- a/Makefile
+++ b/Makefile
@@ -972,6 +972,7 @@ LIB_OBJS += preload-index.o
 LIB_OBJS += pretty.o
 LIB_OBJS += prio-queue.o
 LIB_OBJS += progress.o
+LIB_OBJS += promisor-remote.o
 LIB_OBJS += prompt.o
 LIB_OBJS += protocol.o
 LIB_OBJS += quote.o
diff --git a/promisor-remote.c b/promisor-remote.c
new file mode 100644
index 0000000000..d2f574651e
--- /dev/null
+++ b/promisor-remote.c
@@ -0,0 +1,100 @@
+#include "cache.h"
+#include "promisor-remote.h"
+#include "config.h"
+
+static struct promisor_remote *promisors;
+static struct promisor_remote **promisors_tail = &promisors;
+
+struct promisor_remote *promisor_remote_new(const char *remote_name)
+{
+	struct promisor_remote *o;
+
+	o = xcalloc(1, sizeof(*o));
+	o->remote_name = xstrdup(remote_name);
+
+	*promisors_tail = o;
+	promisors_tail = &o->next;
+
+	return o;
+}
+
+static struct promisor_remote *promisor_remote_look_up(const char *remote_name,
+						       struct promisor_remote **previous)
+{
+	struct promisor_remote *o, *p;
+
+	for (p = NULL, o = promisors; o; p = o, o = o->next)
+		if (o->remote_name && !strcmp(o->remote_name, remote_name)) {
+			if (previous)
+				*previous = p;
+			return o;
+		}
+
+	return NULL;
+}
+
+static void promisor_remote_move_to_tail(struct promisor_remote *o,
+					 struct promisor_remote *previous)
+{
+	if (previous)
+		previous->next = o->next;
+	else
+		promisors = o->next ? o->next : o;
+	o->next = NULL;
+	*promisors_tail = o;
+	promisors_tail = &o->next;
+}
+
+static int promisor_remote_config(const char *var, const char *value, void *data)
+{
+	struct promisor_remote *o;
+	const char *name;
+	int namelen;
+	const char *subkey;
+
+	if (parse_config_key(var, "remote", &name, &namelen, &subkey) < 0)
+		return 0;
+
+	if (!strcmp(subkey, "promisor")) {
+		char *remote_name;
+
+		if (!git_config_bool(var, value))
+			return 0;
+
+		remote_name = xmemdupz(name, namelen);
+
+		if (!promisor_remote_look_up(remote_name, NULL))
+			promisor_remote_new(remote_name);
+
+		free(remote_name);
+		return 0;
+	}
+
+	return 0;
+}
+
+static void promisor_remote_init(void)
+{
+	static int initialized;
+
+	if (initialized)
+		return;
+	initialized = 1;
+
+	git_config(promisor_remote_config, NULL);
+}
+
+struct promisor_remote *promisor_remote_find(const char *remote_name)
+{
+	promisor_remote_init();
+
+	if (!remote_name)
+		return promisors;
+
+	return promisor_remote_look_up(remote_name, NULL);
+}
+
+int has_promisor_remote(void)
+{
+	return !!promisor_remote_find(NULL);
+}
diff --git a/promisor-remote.h b/promisor-remote.h
new file mode 100644
index 0000000000..bfbf7c0f21
--- /dev/null
+++ b/promisor-remote.h
@@ -0,0 +1,17 @@
+#ifndef PROMISOR_REMOTE_H
+#define PROMISOR_REMOTE_H
+
+/*
+ * Promisor remote linked list
+ * Its information come from remote.XXX config entries.
+ */
+struct promisor_remote {
+	const char *remote_name;
+	struct promisor_remote *next;
+};
+
+extern struct promisor_remote *promisor_remote_new(const char *remote_name);
+extern struct promisor_remote *promisor_remote_find(const char *remote_name);
+extern int has_promisor_remote(void);
+
+#endif /* PROMISOR_REMOTE_H */
-- 
2.21.0.166.gb5e4dbcfd3


  parent reply	other threads:[~2019-03-12 13:30 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-12 13:29 [PATCH v3 00/11] Many promisor remotes Christian Couder
2019-03-12 13:29 ` [PATCH v3 01/11] fetch-object: make functions return an error code Christian Couder
2019-03-12 13:29 ` Christian Couder [this message]
2019-03-13  4:09   ` [PATCH v3 02/11] Add initial support for many promisor remotes Junio C Hamano
2019-03-13  4:34     ` Junio C Hamano
2019-04-01 16:41     ` Christian Couder
2019-03-12 13:29 ` [PATCH v3 03/11] promisor-remote: implement promisor_remote_get_direct() Christian Couder
2019-03-13  4:23   ` Junio C Hamano
2019-04-01 16:41     ` Christian Couder
2019-03-12 13:29 ` [PATCH v3 04/11] promisor-remote: add promisor_remote_reinit() Christian Couder
2019-03-13  4:28   ` Junio C Hamano
2019-04-01 16:41     ` Christian Couder
2019-03-12 13:29 ` [PATCH v3 05/11] promisor-remote: use repository_format_partial_clone Christian Couder
2019-03-13  4:31   ` Junio C Hamano
2019-04-01 16:42     ` Christian Couder
2019-04-01 17:25       ` Junio C Hamano
2019-03-12 13:29 ` [PATCH v3 06/11] Use promisor_remote_get_direct() and has_promisor_remote() Christian Couder
2019-03-12 13:29 ` [PATCH v3 07/11] promisor-remote: parse remote.*.partialclonefilter Christian Couder
2019-03-12 13:29 ` [PATCH v3 08/11] builtin/fetch: remove unique promisor remote limitation Christian Couder
2019-03-12 13:29 ` [PATCH v3 09/11] t0410: test fetching from many promisor remotes Christian Couder
2019-03-12 13:29 ` [PATCH v3 10/11] partial-clone: add multiple remotes in the doc Christian Couder
2019-03-12 13:29 ` [PATCH v3 11/11] remote: add promisor and partial clone config to " Christian Couder

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