From 35094992a3804204b97d77dd74749d59b9f69280 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@parabola.nu>
Date: Wed, 3 Oct 2018 15:19:27 -0400
Subject: db-import-any: Rewrite to use db-update

---
 config.local.import-ourarches |  2 +
 db-import-any                 | 97 ++++++++++++++++++++++---------------------
 2 files changed, 52 insertions(+), 47 deletions(-)

diff --git a/config.local.import-ourarches b/config.local.import-ourarches
index c1b101f..0361328 100644
--- a/config.local.import-ourarches
+++ b/config.local.import-ourarches
@@ -10,6 +10,8 @@ PKGREPOS=(
 # ARCHES should list arches that ./config.local.parabola has but
 # there's no Arch Linux upstream for.
 ARCHES=(ppc64le)
+PKGPOOL='pool/import-ourarches'
+SRCPOOL='sources/import-ourarches'
 
 # For db-import-any.
 # Which architecture to import arch=(any) packages from.
diff --git a/db-import-any b/db-import-any
index 9c6b478..455b802 100755
--- a/db-import-any
+++ b/db-import-any
@@ -1,56 +1,59 @@
 #!/bin/bash
 # Releases 'any' packages from Arch arches to our arches
 
+set -eu -o pipefail
 source "$(dirname "$(readlink -e "$0")")/config"
 source "$(librelib messages)"
 setup_traps
 
-# Traverse all Arch repos
-for _repo in "${PKGREPOS[@]}"; do
-	msg "Processing %s..." "${_repo}"
-
-	# Find 'any' packages
-	# This is hardcoded but it could release other arches...
-	PKGS=($(find "${FTP_BASE}/${_repo}/os/${ARCHARCH}/" \
-	             -iname '*-any.pkg.tar.?z' \
-	             -printf "%f "))
-
-	if [ ${#PKGS[@]} -eq 0 ]; then
-		msg2 "No '%s' packages here" any
-		continue
-	fi
-
-	for _arch in "${ARCHES[@]}"; do
-		msg2 "Syncing %s..." "${_arch}"
-
-		# Sync 'any' only and extract the synced packages
-		SYNCED=($(
-				rsync -av \
-					--include='*-any.pkg.tar.?z' \
-					--include='*-any.pkg.tar.?z.sig' \
-					--exclude='*' \
-					"${FTP_BASE}/${_repo}/os/${ARCHARCH}/" \
-					"${FTP_BASE}/${_repo}/os/${_arch}/" 2>&1 | \
-					grep 'any\.pkg\.tar\..z$' | \
-					cut -d ' ' -f 1 ))
-
-		if [ ${#SYNCED[@]} -eq 0 ]; then
-			msg2 "Already synced (or error happened)"
-			continue
-		fi
-
-		msg2 "Synced %d packages: %s" "${#SYNCED[@]}" "${SYNCED[*]}"
-
-		msg2 "Adding to db..."
-
-		pushd "${FTP_BASE}/${_repo}/os/${_arch}/" >/dev/null
-
-		# Add the packages to the db
-		repo-add "${_repo}${DBEXT}" "${SYNCED[@]}"
+# usage: expac_file <file.db> <expac_args>
+#
+# Uses the ${WORKDIR} global
+expac_file() {
+	local dbfile=$1
+	local args=("${@:2}")
+
+	local reponame=${dbfile##*/}
+	reponame=${reponame%%.*}
+
+	mkdir -p -- "${WORKDIR}/expac/root"
+	cat >"${WORKDIR}/expac/pacman.conf" <<-EOT
+	[options]
+	RootDir = ${WORKDIR}/expac/root
+	DBPath = ${WORKDIR}/expac/root
+
+	[${reponame}]
+	Server = file://$(realpath --no-symlinks -- "${dbfile%/*}")
+	EOT
+
+	fakeroot pacman --config="${WORKDIR}/expac/pacman.conf" -Syy >/dev/null
+	# expac exits with non-zero on emtpy databases, so ignore errors
+	expac --config="${WORKDIR}/expac/pacman.conf" --sync "${args[@]}" || true
+}
+
+main() {
+	WORKDIR=$(mktemp -dt "${0##*/}.XXXXXXXXXX")
+	readonly WORKDIR
+	trap "rm -rf -- ${WORKDIR@Q}" EXIT
+
+	local repo
+	for repo in "${PKGREPOS[@]}"; do
+		msg "Processing %s..." "${repo}"
+		# Look for arch=(any) packages that exist in
+		# ${ARCHARCH} for this repo but not in any of
+		# ${ARCHES[@]}.
+		#
+		# Assume that all ${ARCHES[@]} agree on arch=(any)
+		# packages, and only inspect ${ARCHES[0]}.
+		comm -23 \
+		     <(expac_file "${FTP_BASE}/${repo}/os/${ARCHARCH}/${repo}.db" '%a %f' | awk '$1 == "any" { print $2 }') \
+		     <(expac_file "${FTP_BASE}/${repo}/os/${ARCHES[0]}/${repo}.db" '%a %f' | awk '$1 == "any" { print $2 }') \
+			| xargs -d '\n' -r -n1 -- printf '%s/%s\n' "${FTP_BASE}/${repo}/os/${ARCHARCH}" \
+			| xargs -d '\n' -r -- ln -srv -t "${WORKDIR}/staging/${repo}" --
+	done
 
-		popd >/dev/null
+	msg "Running db-update..."
+	STAGING=${WORKDIR}/staging db-update
+}
 
-		# Avoid mixups
-		unset SYNCED PKGS
-	done
-done
+main "$@"
-- 
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