From 5349fe385adf1ac4743ed872ccadc0afbaa21465 Mon Sep 17 00:00:00 2001
From: hasufell <hasufell@hasufell.de>
Date: Mon, 18 Jan 2016 13:31:43 +0100
Subject: [PATCH] Fetch pre-generated cache

---
 hooks/sync_post/01-sync_gentoo_cache.bash | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/hooks/sync_post/01-sync_gentoo_cache.bash b/hooks/sync_post/01-sync_gentoo_cache.bash
index d44bef3..61da2b1 100644
--- a/hooks/sync_post/01-sync_gentoo_cache.bash
+++ b/hooks/sync_post/01-sync_gentoo_cache.bash
@@ -7,6 +7,25 @@ if [[ ${TARGET} == gentoo ]] ; then
 	# Number of jobs for egencache, default is number of processors.
 	egencache_jobnum="$(nproc)"
 
+	if [[ -f ${PORTDIR}/metadata/timestamp.x ]]; then
+		portage_current_timestamp=$(cut -f 1 -d " " "${PORTDIR}/metadata/timestamp.x" )
+	else
+		portage_current_timestamp=0
+	fi
+
+	ebegin "Fetching metadata timestamp for ${TARGET}"
+	rsync -aq rsync://rsync.gentoo.org/gentoo-portage/metadata/timestamp.x "${PORTDIR}"/metadata/timestamp.x
+	eend $?
+	portage_new_timestamp=$(cut -f 1 -d " " "${PORTDIR}/metadata/timestamp.x" )
+
+	if [[ ${portage_current_timestamp} -lt ${portage_new_timestamp} ]]; then
+		ebegin "Fetching pre-generated metadata cache for ${TARGET}"
+		rsync -aq rsync://rsync.gentoo.org/gentoo-portage/metadata/md5-cache/ "${PORTDIR}"/metadata/md5-cache/
+		eend $?
+	else
+		einfo "Metadata cache for ${TARGET} already recent, no need to fetch it :-)"
+	fi
+
 	ebegin "Updating metadata cache for repository ${TARGET}"
 	egencache --jobs=${egencache_jobnum} --repo=${TARGET} --update --update-use-local-desc
 	eend $?