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### Hub Snapshot Tools
Hubzilla developers frequently need to switch between branches that might have
incompatible database schemas or content. The following two scripts create and
restore complete snapshots of a Hubzilla instance, including both the hub web
root and the entire database state. Each script requires a config file called
`hub-snapshot.conf` residing in the same folder and containing the specific
directories and database details of your hub.
### Config
The format of the config file is very strict. There must be no spaces between the
variable name and the value. Replace only the content inside the quotes with your
configuration. Save this file as `hub-snapshot.conf` alongside the scripts.
# Location of hub root. Typically this is the location of the Hubzilla repo clone.
HUBROOT="/var/www/"
# MySQL database name
DBNAME="hubzilla"
# MySQL database user
DBUSER="hubzilla"
# MySQL database password
DBPWD="akeufajeuwfb"
# The target snapshot folder where the git repo will be initialized
SNAPSHOTROOT="/root/snapshots/hubzilla/"
### Snapshot
Example usage:
sh hub-snapshot.sh my-hub.conf "Commit message for the snapshot"
**hub-snapshot.sh**:
#!/bin/bash
if ! [ -f "$1" ]; then
echo "$1 is not a valid file. Aborting..."
exit 1
fi
source "$1"
#echo "$DBNAME"
#echo "$DBUSER"
#echo "$DBPWD"
#echo "$HUBROOT"
#echo "$SNAPSHOTROOT"
MESSAGE="snapshot: $2"
if [ "$DBPWD" == "" -o "$SNAPSHOTROOT" == "" -o "$DBNAME" == "" -o "$DBUSER" == "" -o "$HUBROOT" == "" ]; then
echo "Required variable is not set. Aborting..."
exit 1
fi
if [ ! -d "$SNAPSHOTROOT"/db/ ]; then
mkdir -p "$SNAPSHOTROOT"/db/
fi
if [ ! -d "$SNAPSHOTROOT"/www/ ]; then
mkdir -p "$SNAPSHOTROOT"/www/
fi
if [ ! -d "$SNAPSHOTROOT"/www/ ] || [ ! -d "$SNAPSHOTROOT"/db/ ]; then
echo "Error creating snapshot directories. Aborting..."
exit 1
fi
echo "Export database..."
mysqldump -u "$DBUSER" -p"$DBPWD" "$DBNAME" > "$SNAPSHOTROOT"/db/"$DBNAME".sql
echo "Copy hub root files..."
rsync -va --delete --exclude=.git* "$HUBROOT"/ "$SNAPSHOTROOT"/www/
cd "$SNAPSHOTROOT"
if [ ! -d ".git" ]; then
git init
fi
if [ ! -d ".git" ]; then
echo "Cannot initialize git repo. Aborting..."
exit 1
fi
git add -A
echo "Commit hub snapshot..."
git commit -a -m "$MESSAGE"
exit 0
### Restore
#!/bin/bash
# Restore hub to a previous state. Input hub config and commit hash
if ! [ -f "$1" ]; then
echo "$1 is not a valid file. Aborting..."
exit 1
fi
source "$1"
COMMIT=$2
if [ "$DBPWD" == "" -o "$SNAPSHOTROOT" == "" -o "$DBNAME" == "" -o "$DBUSER" == "" -o "$HUBROOT" == "" ]; then
echo "Required variable is not set. Aborting..."
exit 1
fi
RESTOREDIR="$(mktemp -d)/"
if [ ! -d "$RESTOREDIR" ]; then
echo "Cannot create restore directory. Aborting..."
exit 1
fi
echo "Cloning the snapshot repo..."
git clone "$SNAPSHOTROOT" "$RESTOREDIR"
cd "$RESTOREDIR"
echo "Checkout requested snapshot..."
git checkout "$COMMIT"
echo "Restore hub root files..."
rsync -a --delete --exclude=.git* "$RESTOREDIR"/www/ "$HUBROOT"/
echo "Restore hub database..."
mysql -u "$DBUSER" -p"$DBPWD" "$DBNAME" < "$RESTOREDIR"/db/"$DBNAME".sql
chown -R www-data:www-data "$HUBROOT"/{store,extend,addon,.htlog,.htconfig.php}
echo "Restored hub to snapshot $COMMIT"
echo "Removing temporary files..."
rm -rf "$RESTOREDIR"
exit 0
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