From 7b4e592c6605f2a5bc0df7b82ccac1f1bffe656e Mon Sep 17 00:00:00 2001
From: Luke Shumaker <LukeShu@sbcglobal.net>
Date: Sat, 21 Sep 2013 16:26:16 -0400
Subject: librerelease: Avoid locking the staging directory the whole time.

https://labs.parabola.nu/issues/410
---
 src/abslibre-tools/librerelease | 74 +++++++++++++++++++++++++++++------------
 1 file changed, 52 insertions(+), 22 deletions(-)

diff --git a/src/abslibre-tools/librerelease b/src/abslibre-tools/librerelease
index 9278a32..2d2a480 100755
--- a/src/abslibre-tools/librerelease
+++ b/src/abslibre-tools/librerelease
@@ -38,6 +38,18 @@
 . libremessages
 . $(librelib conf.sh)
 
+dryrun=""
+readonly rsync_flags=(
+	--no-group
+	--no-perms
+	--copy-links
+	--hard-links
+	--partial
+	--human-readable
+	--progress
+	-e ssh
+)
+
 usage() {
 	print "Usage: %s [OPTIONS]" "${0##*/}"
 	echo
@@ -51,11 +63,15 @@ usage() {
 	flag '-h'            "Show this message"
 }
 
+list0_files() {
+	find "${WORKDIR}/staging" -L -type f -print0
+}
+
 list_packages() {
 	find "$WORKDIR/staging/" -mindepth 1 -type d -not -empty -printf '%f\n' | sort |
 	while read -r repo; do
 		msg2 "$repo"
-		find "${WORKDIR}/staging/${repo}" -type f -printf "%f\n" | sort
+		find "${WORKDIR}/staging/${repo}" -L -type f -printf "%f\n" | sort
 	done
 }
 
@@ -111,14 +127,29 @@ clean_non_packages() {
 }
 
 # Clean everything if not on dry-run mode
-clean() {
+clean_files() {
+	local file_list=$1
+
+	local rmcmd=(rm -fv)
 	if [[ -n "${dryrun}" ]]; then
-		:
-	else
-		msg "Removing files from local staging directory"
-		# use '-exec rm' instead of '-delete' to be verbose
-		find "${WORKDIR}/staging" -type f -exec rm -fv {} +
+		rmcmd=(printf "$(_ "removed '%s' (dry-run)")\n")
 	fi
+
+	msg "Removing files from local staging directory"
+	xargs -0 -a "$file_list" "${rmcmd[@]}"
+}
+
+clean() {
+	lock 10 "${WORKDIR}/staging.lock" \
+		'Waiting for an exclusive lock on the staging directory'
+
+	local file_list="$(mktemp -t ${0##*/}.XXXXXXXXXX)"
+	trap "$(printf 'rm -f -- %q' "$file_list")" EXIT
+	list0_files > "$file_list"
+
+	lock_close 10
+
+	clean_files "$file_list"
 }
 
 main() {
@@ -128,7 +159,6 @@ main() {
 	fi
 
 	# Parse options
-	local dryrun=""
 	local mode="release_packages"
 	while getopts 'clnh' arg; do
 		case $arg in
@@ -154,10 +184,10 @@ main() {
 	check_vars makepkg GPGKEY
 	load_files libretools
 	check_vars libretools WORKDIR REPODEST || return 1
+	REPODEST+='/staging/'
 	# The following variables are actually optional
 	#check_vars libretools HOOKPRERELEASE HOOKPOSTRELEASE || return 1
 
-	lock 10 "${WORKDIR}/staging.lock" 'Waiting for an exclusive lock on the staging directory'
 	"$mode"
 }
 
@@ -167,6 +197,9 @@ release_packages() {
 		bash -c "${HOOKPRERELEASE}"
 	fi
 
+	lock 10 "${WORKDIR}/staging.lock" \
+		'Waiting for an exclusive lock on the staging directory'
+
 	clean_non_packages
 	sign_packages || return 1
 
@@ -176,19 +209,16 @@ release_packages() {
 	find ${WORKDIR}/staging -type f -exec chmod 644 {} +
 	find ${WORKDIR}/staging -type d -exec chmod 755 {} +
 
-	msg "%s to upload" $(du -h -d 0 ${WORKDIR}/staging | tr "\t" " " | cut -d" " -f1)
+	local file_list="$(mktemp -t ${0##*/}.XXXXXXXXXX)"
+	trap "$(printf 'rm -f -- %q' "$file_list")" EXIT
+	list0_files > "$file_list"
+
+	lock_close 10
+
+	msg "%s to upload" "$(du -hc --files0-from="$file_list" | sed -n '$s/\t.*//p')"
 	msg "Uploading packages..."
-	if ! rsync --recursive \
-		${dryrun} \
-		--no-group \
-		--no-perms \
-		--copy-links \
-		--hard-links \
-		--partial \
-		--prune-empty-dirs \
-		--human-readable \
-		--progress \
-		-e "ssh " \
+	if ! rsync ${dryrun} "${rsync_flags[@]}" \
+		-0 --files-from="$file_list"
 		${WORKDIR}/staging \
 		${REPODEST}/
 	then
@@ -196,7 +226,7 @@ release_packages() {
 		return 1
 	fi
 
-	clean
+	clean_files "$file_list"
 
 	msg "Running db-update on repos"
 	ssh ${REPODEST%%:*} dbscripts/db-update
-- 
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