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Do pg_upgrade after changing postgres version #179

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Do pg_upgrade after changing postgres version #179

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620c7cd
Do pg_upgrade after changing postgres version
tribela May 3, 2019
34b9307
Check that migrating is available
tribela May 3, 2019
1465ecc
Fix get_simple_version
tribela May 3, 2019
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54 changes: 53 additions & 1 deletion subcommands/upgrade
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,29 @@ source "$PLUGIN_BASE_PATH/common/functions"
source "$(dirname "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")/functions"
source "$PLUGIN_AVAILABLE_PATH/ps/functions"

get_simple_version() {
# 9.2.4 => 9.2
# 9.2 => 9.2
# 11.2 => 11
# 11 => 11
local version=$1
IFS=. read -r -a arr <<< "${version%-*}"

if [ "${arr[0]}" -lt 10 ]; then
echo "${arr[0]}.${arr[1]}"
else
echo "${arr[0]}"
fi

}

docker_image_exists() {
local image=$1
local tag=$2
curl --silent -f -lLS "https://hub.docker.com/v2/repositories/$image/tags/$tag" &>/dev/null
}


service-upgrade-cmd() {
#E you can upgrade an existing service to a new image or image-version
#E dokku $PLUGIN_COMMAND_PREFIX:upgrade lolipop
Expand Down Expand Up @@ -34,7 +57,12 @@ service-upgrade-cmd() {
return
fi

dokku_log_info2 "Upgrading $SERVICE to $NEW_PLUGIN_IMAGE_TAG"
local OLD_IMAGE_TAG
local OLD_IMAGE_VERSION
OLD_IMAGE_TAG="$(service_version "$SERVICE")"
OLD_IMAGE_VERSION=${OLD_IMAGE_TAG#*:}

dokku_log_info2 "Upgrading $SERVICE from $OLD_IMAGE_TAG to $NEW_PLUGIN_IMAGE_TAG"
if [[ "$SERVICE_RESTART_APPS" == "true" ]]; then
dokku_log_info2 "Stopping all linked services"
for app in $(service_linked_apps "$SERVICE"); do
Expand All @@ -45,6 +73,30 @@ service-upgrade-cmd() {

dokku_log_info2 "Stopping $SERVICE"
service_container_rm "$SERVICE"

# Migrate
local old_version
local new_version
local data_dir="$PLUGIN_DATA_ROOT/$SERVICE/data"
local data_old="$PLUGIN_DATA_ROOT/$SERVICE/data_old"
old_version=$(get_simple_version "$OLD_IMAGE_VERSION")
new_version=$(get_simple_version "$PLUGIN_IMAGE_VERSION")

if docker_image_exists tianon/postgres-upgrade "$old_version-to-$new_version"; then

dokku_log_info2 "Migrating $SERVICE from $old_version to $new_version"

mv "$data_dir" "$data_old"

docker run --rm \
-v "$data_old:/var/lib/postgresql/${old_version}/data" \
-v "$data_dir:/var/lib/postgresql/${new_version}/data" \
tianon/postgres-upgrade:"${old_version}-to-${new_version}"

docker run --rm -v "$data_old:/data" busybox:1.30.1-uclibc chmod 777 -R /data
rm -rf "$data_old"
fi

service_start "$SERVICE" "${@:2}"

if [[ "$SERVICE_RESTART_APPS" == "true" ]]; then
Expand Down