From: Michael Tremer <michael.tremer@ipfire.org>
Date: Wed, 20 Sep 2023 18:26:05 +0000 (+0000)
Subject: repos: Implement subpriorities to prefer local packages when possible
X-Git-Tag: 0.9.30~1678
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=415c275e8c329184cf931f97c7007294604d5fe6;p=pakfire.git

repos: Implement subpriorities to prefer local packages when possible

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/libpakfire/repo.c b/src/libpakfire/repo.c
index adb77b0da..fe6db5999 100644
--- a/src/libpakfire/repo.c
+++ b/src/libpakfire/repo.c
@@ -107,6 +107,23 @@ int pakfire_repo_is_local(struct pakfire_repo* repo) {
 	return pakfire_string_startswith(repo->appdata->baseurl, "file://");
 }
 
+/*
+	LIBSOLV knows a subpriority which is a good way to indicate that
+	packages from a local repository should be preferred without
+	preferring an older version of a package over a new one.
+
+	We set this automatically to reduce bandwidth usage.
+ */
+static void pakfire_repo_update_subpriority(struct pakfire_repo* repo) {
+	// Prefer local repositories
+	if (pakfire_repo_is_local(repo))
+		repo->repo->subpriority = 1;
+
+	// Otherwise reset
+	else
+		repo->repo->subpriority = 0;
+}
+
 int pakfire_repo_name_equals(struct pakfire_repo* repo, const char* name) {
 	const char* n = pakfire_repo_get_name(repo);
 	if (!n)
@@ -635,6 +652,9 @@ PAKFIRE_EXPORT int pakfire_repo_create(struct pakfire_repo** repo,
 		goto ERROR;
 	}
 
+	// Update the subpriority
+	pakfire_repo_update_subpriority(rep);
+
 	// Setup/clear repository data
 	r = pakfire_repo_clear(rep);
 	if (r)
@@ -846,6 +866,9 @@ PAKFIRE_EXPORT int pakfire_repo_set_baseurl(struct pakfire_repo* repo, const cha
 	if (!repo->appdata->baseurl)
 		return 1;
 
+	// Update sub-priority
+	pakfire_repo_update_subpriority(repo);
+
 	return 0;
 }