create-squashfs-snapshot: work on daily snapshots

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

1 files changed, 24 insertions, 0 deletions

diff --git a/create-squashfs-snapshot b/create-squashfs-snapshot
index 4fc35ff..1fafe9d 100755
--- a/create-squashfs-snapshot
+++ b/create-squashfs-snapshot
@@ -161,6 +161,30 @@ for algo in "${algo_LIST[@]}" ; do
 	ln -s -f "${reponame}-${today}${ext}" "${reponame}-current${ext}"
 done
 
+# Find the files that do NOT have dated SHA512 checksums with them already.
+find . -name 'gentoo-*sqfs' -type f -printf '%f\n' \
+| cut -d. -f1 \
+| uniq \
+| perl -lne 'print $_ unless -f $_.".sha512sum.txt"' \
+| while read _prefix ; do
+	d=${_prefix}.sha512sum.txt
+
+	find . \
+			-name "${prefix}*" \
+			-a \( -name "*.sqfs" -o -name '*.sqdelta' \) \
+			-printf '%f\n' \
+	| xargs sha512sum \
+	| gpg --yes -u "${signkeyid}" --clearsign \
+	--comment "Daily: ${_prefix}" \
+	--output ${d}.tmp \
+	/dev/stdin
+
+	mv ${d}.tmp ${d}
+done
+
+# TODO: combine the above checksums (after verification) INSTEAD of
+# re-computing checksums on 18GB of data each day.
+#
 # create checksums for snapshot and deltas
 sha512sum -- *.sqfs *.sqdelta | \
 	gpg --yes -u "${signkeyid}" --clearsign \