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File _service:obs_scm:backport-MergedTransaction-Calculate-RPM-difference-between-two-same-versions-as-no-op.patch of Package libdnf
From 54823d82a1369c25ba1a68c18ea2a67c41f4fbe7 Mon Sep 17 00:00:00 2001 From: Jan Kolarik <jkolarik@redhat.com> Date: Mon, 26 Feb 2024 09:58:33 +0000 Subject: [PATCH] MergedTransaction: Calculate RPM difference between two same versions as no-op If a package of a particular version is installed and would still be installed after a list of transactions, it's more user friendly to treat the whole situation as "do nothing". Conflict:NA Reference:https://github.com/rpm-software-management/libdnf/commit/54823d82a1369c25ba1a68c18ea2a67c41f4fbe7 --- libdnf/transaction/MergedTransaction.cpp | 38 ++++++++++++------- libdnf/transaction/MergedTransaction.hpp | 6 +-- .../transaction/MergedTransactionTest.cpp | 7 +--- 3 files changed, 28 insertions(+), 23 deletions(-) diff --git a/libdnf/transaction/MergedTransaction.cpp b/libdnf/transaction/MergedTransaction.cpp index a8d878cb51..8f26882f71 100644 --- a/libdnf/transaction/MergedTransaction.cpp +++ b/libdnf/transaction/MergedTransaction.cpp @@ -192,7 +192,7 @@ static bool transaction_item_sort_function(const std::shared_ptr<TransactionItem * Actions are merged using following rules: * (old action) -> (new action) = (merged action) * - * Erase/Obsolete -> Install/Obsoleting = Reinstall/Downgrade/Upgrade + * Erase/Obsolete -> Install/Obsoleting = Downgrade/Upgrade * * Reinstall/Reason change -> (new action) = (new action) * @@ -210,6 +210,9 @@ static bool transaction_item_sort_function(const std::shared_ptr<TransactionItem * * With complete transaction pair we need to get a new Upgrade/Downgrade package and * compare versions with original package from pair. + * + * Additionally, if a package is installed both before and after the list of transactions + * with the same version, no action will be taken. */ std::vector< TransactionItemBasePtr > MergedTransaction::getItems() @@ -261,13 +264,16 @@ getItemIdentifier(ItemPtr item) /** * Resolve the difference between RPMs in the first and second transaction item - * and create a ItemPair of Upgrade, Downgrade or reinstall. + * and create a ItemPair of Upgrade, Downgrade or drop the item from the merged + * transaction set in case of both packages are of the same version. * Method is called when original package is being removed and than installed again. + * \param itemPairMap merged transaction set * \param previousItemPair original item pair * \param mTransItem new transaction item */ void -MergedTransaction::resolveRPMDifference(ItemPair &previousItemPair, +MergedTransaction::resolveRPMDifference(ItemPairMap &itemPairMap, + ItemPair &previousItemPair, TransactionItemBasePtr mTransItem) { auto firstItem = previousItemPair.first->getItem(); @@ -277,11 +283,10 @@ MergedTransaction::resolveRPMDifference(ItemPair &previousItemPair, auto secondRPM = std::dynamic_pointer_cast< RPMItem >(secondItem); if (firstRPM->getVersion() == secondRPM->getVersion() && - firstRPM->getEpoch() == secondRPM->getEpoch()) { - // reinstall - mTransItem->setAction(TransactionItemAction::REINSTALL); - previousItemPair.first = mTransItem; - previousItemPair.second = nullptr; + firstRPM->getEpoch() == secondRPM->getEpoch() && + firstRPM->getRelease() == secondRPM->getRelease()) { + // Drop the item from merged transaction + itemPairMap.erase(getItemIdentifier(firstItem)); return; } else if ((*firstRPM) < (*secondRPM)) { // Upgrade to secondRPM @@ -296,7 +301,9 @@ MergedTransaction::resolveRPMDifference(ItemPair &previousItemPair, } void -MergedTransaction::resolveErase(ItemPair &previousItemPair, TransactionItemBasePtr mTransItem) +MergedTransaction::resolveErase(ItemPairMap &itemPairMap, + ItemPair &previousItemPair, + TransactionItemBasePtr mTransItem) { /* * The original item has been removed - it has to be installed now unless the rpmdb @@ -306,7 +313,7 @@ MergedTransaction::resolveErase(ItemPair &previousItemPair, TransactionItemBaseP if (mTransItem->getAction() == TransactionItemAction::INSTALL) { if (mTransItem->getItem()->getItemType() == ItemType::RPM) { // resolve the difference between RPM packages - resolveRPMDifference(previousItemPair, mTransItem); + resolveRPMDifference(itemPairMap, previousItemPair, mTransItem); } else { // difference between comps can't be resolved mTransItem->setAction(TransactionItemAction::REINSTALL); @@ -323,11 +330,14 @@ MergedTransaction::resolveErase(ItemPair &previousItemPair, TransactionItemBaseP * transaction - new package is used to complete the pair. Items are stored in pairs (Upgrade, * Upgrade) or (Downgraded, Downgrade). With complete transaction pair we need to get the new * Upgrade/Downgrade item and compare its version with the original item from the pair. + * \param itemPairMap merged transaction set * \param previousItemPair original item pair * \param mTransItem new transaction item */ void -MergedTransaction::resolveAltered(ItemPair &previousItemPair, TransactionItemBasePtr mTransItem) +MergedTransaction::resolveAltered(ItemPairMap &itemPairMap, + ItemPair &previousItemPair, + TransactionItemBasePtr mTransItem) { auto newState = mTransItem->getAction(); auto firstState = previousItemPair.first->getAction(); @@ -369,7 +379,7 @@ MergedTransaction::resolveAltered(ItemPair &previousItemPair, TransactionItemBas } else { if (mTransItem->getItem()->getItemType() == ItemType::RPM) { // resolve the difference between RPM packages - resolveRPMDifference(previousItemPair, mTransItem); + resolveRPMDifference(itemPairMap, previousItemPair, mTransItem); } else { // difference between comps can't be resolved previousItemPair.second->setAction(TransactionItemAction::REINSTALL); @@ -405,7 +415,7 @@ MergedTransaction::mergeItem(ItemPairMap &itemPairMap, TransactionItemBasePtr mT switch (firstState) { case TransactionItemAction::REMOVE: case TransactionItemAction::OBSOLETED: - resolveErase(previousItemPair, mTransItem); + resolveErase(itemPairMap, previousItemPair, mTransItem); break; case TransactionItemAction::INSTALL: // the original package has been installed -> it may be either Removed, or altered @@ -432,7 +442,7 @@ MergedTransaction::mergeItem(ItemPairMap &itemPairMap, TransactionItemBasePtr mT case TransactionItemAction::UPGRADE: case TransactionItemAction::UPGRADED: case TransactionItemAction::OBSOLETE: - resolveAltered(previousItemPair, mTransItem); + resolveAltered(itemPairMap, previousItemPair, mTransItem); break; case TransactionItemAction::REINSTALLED: break; diff --git a/libdnf/transaction/MergedTransaction.hpp b/libdnf/transaction/MergedTransaction.hpp index dbb8af1183..f85b133a87 100644 --- a/libdnf/transaction/MergedTransaction.hpp +++ b/libdnf/transaction/MergedTransaction.hpp @@ -76,9 +76,9 @@ class MergedTransaction { typedef std::map< std::string, ItemPair > ItemPairMap; void mergeItem(ItemPairMap &itemPairMap, TransactionItemBasePtr transItem); - void resolveRPMDifference(ItemPair &previousItemPair, TransactionItemBasePtr mTransItem); - void resolveErase(ItemPair &previousItemPair, TransactionItemBasePtr mTransItem); - void resolveAltered(ItemPair &previousItemPair, TransactionItemBasePtr mTransItem); + void resolveRPMDifference(ItemPairMap &itemPairMap, ItemPair &previousItemPair, TransactionItemBasePtr mTransItem); + void resolveErase(ItemPairMap &itemPairMap, ItemPair &previousItemPair, TransactionItemBasePtr mTransItem); + void resolveAltered(ItemPairMap &itemPairMap, ItemPair &previousItemPair, TransactionItemBasePtr mTransItem); }; } // namespace libdnf diff --git a/tests/libdnf/transaction/MergedTransactionTest.cpp b/tests/libdnf/transaction/MergedTransactionTest.cpp index 52507700bc..35fb4250e4 100644 --- a/tests/libdnf/transaction/MergedTransactionTest.cpp +++ b/tests/libdnf/transaction/MergedTransactionTest.cpp @@ -822,12 +822,7 @@ MergedTransactionTest::test_downgrade_upgrade_remove() // test merging trans1, trans2 merged.merge(trans2); auto items2 = merged.getItems(); - CPPUNIT_ASSERT_EQUAL(1, (int)items2.size()); - auto item2 = items2.at(0); - CPPUNIT_ASSERT_EQUAL(std::string("tour-4.8-1.noarch"), item2->getItem()->toStr()); - CPPUNIT_ASSERT_EQUAL(std::string("repo1"), item2->getRepoid()); - CPPUNIT_ASSERT_EQUAL(TransactionItemAction::REINSTALL, item2->getAction()); - CPPUNIT_ASSERT_EQUAL(TransactionItemReason::USER, item2->getReason()); + CPPUNIT_ASSERT_EQUAL(0, (int)items2.size()); // test merging trans1, trans2, trans3 merged.merge(trans3);
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