From c4d7f8f1f1fc635b38c3cfca765bfc5b3328e53a Mon Sep 17 00:00:00 2001
From: Michael Tremer <michael.tremer@ipfire.org>
Date: Sun, 20 Nov 2011 12:39:39 +0100
Subject: [PATCH] Create a local SOLV file that contains all package
 information.

Reading the sqlite is very slow (however) and as we like to
have a very great user experience, we can cache all information
that is needed by the solver.
For anything else, the full sqlite database is kept and we rely on
that in the first place.
---
 python/pakfire/constants.py        |  1 +
 python/pakfire/repository/base.py  |  6 ++++++
 python/pakfire/repository/index.py | 19 +++++++++++++++++++
 python/pakfire/transaction.py      |  8 ++++++++
 4 files changed, 34 insertions(+)

diff --git a/python/pakfire/constants.py b/python/pakfire/constants.py
index 21819198e..e396888be 100644
--- a/python/pakfire/constants.py
+++ b/python/pakfire/constants.py
@@ -42,6 +42,7 @@ LOCAL_TMP_PATH = "/var/tmp"
 
 PACKAGES_DB_DIR = "var/lib/pakfire"
 PACKAGES_DB = os.path.join(PACKAGES_DB_DIR, "packages.db")
+PACKAGES_SOLV = os.path.join(PACKAGES_DB_DIR, "packages.solv")
 REPOSITORY_DB = "index.db"
 
 BUFFER_SIZE = 102400
diff --git a/python/pakfire/repository/base.py b/python/pakfire/repository/base.py
index 56ece2ea1..e606826c1 100644
--- a/python/pakfire/repository/base.py
+++ b/python/pakfire/repository/base.py
@@ -127,6 +127,12 @@ class RepositoryFactory(object):
 		assert self.index
 		self.index.clear()
 
+	def commit(self):
+		"""
+			Commit repository data to disk.
+		"""
+		self.index.commit()
+
 	def dump(self, long=False, filelist=False):
 		dumps = []
 		# Dump all package information of the packages in this repository.
diff --git a/python/pakfire/repository/index.py b/python/pakfire/repository/index.py
index a73fa76a9..c43303f32 100644
--- a/python/pakfire/repository/index.py
+++ b/python/pakfire/repository/index.py
@@ -83,6 +83,12 @@ class Index(object):
 		"""
 		self.solver_repo.write(filename)
 
+	def commit(self):
+		"""
+			Commit index data to disk.
+		"""
+		pass
+
 	def create_relation(self, *args, **kwargs):
 		return self.pakfire.create_relation(*args, **kwargs)
 
@@ -407,6 +413,19 @@ class IndexLocal(Index):
 	def init(self):
 		self.db = database.DatabaseLocal(self.pakfire, self.repo)
 
+		if os.path.exists(PACKAGES_SOLV):
+			self.read(PACKAGES_SOLV)
+
+	def commit(self):
+		# Write SOLV cache file.
+		filename = os.path.join(self.pakfire.path, PACKAGES_SOLV)
+
+		dirname = os.path.dirname(filename)
+		if not os.path.exists(dirname):
+			os.makedirs(dirname)
+
+		self.write(filename)
+
 	def check(self):
 		# XXX Create the database and lock it or something.
 		pass
diff --git a/python/pakfire/transaction.py b/python/pakfire/transaction.py
index 11a05efe3..ec54b1c33 100644
--- a/python/pakfire/transaction.py
+++ b/python/pakfire/transaction.py
@@ -203,6 +203,11 @@ class Transaction(object):
 
 		return transaction
 
+	@property
+	def local(self):
+		# Shortcut to local repository.
+		return self.pakfire.repos.local
+
 	def add(self, action_name, pkg):
 		assert isinstance(pkg, packages.SolvPackage), pkg
 
@@ -427,5 +432,8 @@ class Transaction(object):
 
 		log.info("")
 
+		# Commit repository metadata.
+		self.local.commit()
+
 		# Call sync to make sure all buffers are written to disk.
 		sync()
-- 
2.39.5