File _service:obs_scm:discover-pk-cache-age.patch of Package plasma-discover

From 25f1c161d2616ba77a72babd923832ea9550cb9d Mon Sep 17 00:00:00 2001
From: Alessandro Astone <ales.astone@gmail.com>
Date: Thu, 28 Sep 2023 15:59:43 +0200
Subject: [PATCH] pk: Set cache-age hint in the RefreshCache transaction

The dnf backend implements the cache-age hint.
For RefreshCache to do anything, we need to change the cache-age from
the default - MAX_UINT32 - to a low amount.

Here we set the cache-age to 5 minutes meaning that the backend will
redownload the caches if they are more than 5 minutes old.
---
 libdiscover/backends/PackageKitBackend/PackageKitBackend.cpp  | 2 ++
 libdiscover/backends/PackageKitBackend/PackageKitNotifier.cpp | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/libdiscover/backends/PackageKitBackend/PackageKitBackend.cpp b/libdiscover/backends/PackageKitBackend/PackageKitBackend.cpp
index 11d076702..521674a90 100644
--- a/libdiscover/backends/PackageKitBackend/PackageKitBackend.cpp
+++ b/libdiscover/backends/PackageKitBackend/PackageKitBackend.cpp
@@ -534,6 +534,8 @@ void PackageKitBackend::checkForUpdates()
         acquireFetching(true);
         m_updater->clearDistroUpgrade();
         m_refresher = PackageKit::Daemon::refreshCache(false);
+        // Limit the cache-age so that we actually download new caches if necessary
+        m_refresher->setHints(globalHints() << QStringLiteral("cache-age=300" /* 5 minutes */));
 
         connect(m_refresher.data(), &PackageKit::Transaction::errorCode, this, &PackageKitBackend::transactionError);
         connect(m_refresher.data(), &PackageKit::Transaction::finished, this, [this]() {
diff --git a/libdiscover/backends/PackageKitBackend/PackageKitNotifier.cpp b/libdiscover/backends/PackageKitBackend/PackageKitNotifier.cpp
index ae5a58c51..64228e7f3 100644
--- a/libdiscover/backends/PackageKitBackend/PackageKitNotifier.cpp
+++ b/libdiscover/backends/PackageKitBackend/PackageKitNotifier.cpp
@@ -292,6 +292,8 @@ void PackageKitNotifier::refreshDatabase()
 
     if (!m_refresher) {
         m_refresher = PackageKit::Daemon::refreshCache(false);
+        // Limit the cache-age so that we actually download new caches if necessary
+        m_refresher->setHints(QStringLiteral("cache-age=300" /* 5 minutes */));
         connect(m_refresher.data(), &PackageKit::Transaction::finished, this, &PackageKitNotifier::recheckSystemUpdateNeeded);
     }
 
-- 
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