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#!/bin/bash
INST_NAME="$1"
VERSION="$2"
if [ -z "$INST_NAME" ] || [ -z "$VERSION" ]; then
echo "Usage: $0 <instance> <version>"
exit 1
fi
set -eu
K8S_CONFIG_HASH_D="/etc/kubernetes/config-hashes/"
K8S_CONFIG_HASH_FILE="$K8S_CONFIG_HASH_D/nextcloud-$INST_NAME.yml"
K8S_MANIFEST_D="/etc/kubernetes/manifests/"
K8S_MANIFEST_FILE="$K8S_MANIFEST_D/nextcloud-$INST_NAME.yml"
if [ ! -e "$K8S_MANIFEST_FILE" ]; then
echo "could not find manifest file: $K8S_MANIFEST_FILE"
exit 2
fi
TMP_D=$(mktemp -d -t nextcloud-upgrade.XXXXXXX)
function cleanup {
rm -rf "$TMP_D"
}
trap cleanup EXIT
IMAGE_BUILD_D=$(cat "$K8S_CONFIG_HASH_FILE" | grep "build/Dockerfile:" | tr -d ":" | xargs dirname)
IMAGE_NAME="nextcloud"
if [ -e "$IMAGE_BUILD_D/Dockerfile" ]; then
## this only works if docker is installed...
echo "*** Building custom image"
echo ""
sed "0,/FROM \(.*\):.*/s//FROM \1:$VERSION/" -i "$IMAGE_BUILD_D/Dockerfile"
IMAGE_NAME="nextcloud/$INST_NAME"
docker build --rm --network host -t "$IMAGE_NAME:$VERSION" "$IMAGE_BUILD_D"
echo ""
else
echo "*** Pre-Pulling the image"
echo ""
crictl pull "docker.io/library/nextcloud:$VERSION"
echo ""
fi
STORAGE_TYPE=$(findmnt -no fstype -T "$IMAGE_BUILD_D")
if [ $STORAGE_TYPE == "zfs" ]; then
echo "*** creating ZFS snapshot"
echo ""
IMAGE_NAME_ESCAPED=${IMAGE_NAME/\//\\/}
CURRENT_VERSION=$(cat "$K8S_MANIFEST_FILE" | awk '/image: "'"$IMAGE_NAME_ESCAPED"':.*"/ { print($2) }' | tr -d '"' | cut -d ':' -f 2)
ZFS_VOLUME=$(findmnt -no source -T "$IMAGE_BUILD_D")
zfs snapshot "$ZFS_VOLUME@upgrade_$CURRENT_VERSION-to-$VERSION""_$(date '+%Y-%m-%m_%H:%M:%S')"
fi
echo "*** Rebuilding config-hash file"
echo ""
cat "$K8S_CONFIG_HASH_FILE" | grep '^/.*:' | sed 's/:$//' | xargs sha256sum | awk '{ print($2":\n checksum: "$1) }' > "$TMP_D/config-hash.yml"
CONFIG_HASH=$(sha256sum "$TMP_D/config-hash.yml" | awk '{ print($1) }')
echo "*** Patching manifest file"
echo ""
sed -e "s#image: \"$IMAGE_NAME:.*\"#image: \"$IMAGE_NAME:$VERSION\"#" -e "s#config-hash: \".*\"#config-hash: \"$CONFIG_HASH\"#" "$K8S_MANIFEST_FILE" > "$TMP_D/manifest.yml"
set +e
diff -u "$K8S_MANIFEST_FILE" "$TMP_D/manifest.yml"
if [ $? -eq 0 ]; then
echo "patching file failed?"
exit 2
fi
cat "$TMP_D/config-hash.yml" > "$K8S_CONFIG_HASH_FILE"
cat "$TMP_D/manifest.yml" > "$K8S_MANIFEST_FILE"
echo ""
exit 0
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