Automatic SVN synchronization with UUID autocopy

autosvnsync.sh

#!/bin/bash

# autosvnsync.sh is a tool for automatically synchronizing/mirroring SVN repositories.
# By default, the script assumes that you have configured a "syncuser" account on the SRC and DEST servers,
# and that you are running the script as "syncuser" on the DEST server (presumably behind a firewall).

#Remote SVN info
SVN_HOST="syncuser@example.com" #User and host, for SSH - alternatively, you can use ~/.ssh/config to specialize something
SVN_LOC="data/svn"
SVN_REPO="svn+ssh://$SVN_HOST/$SVN_LOC"

#Local SVN info
SYNC_LOC="/data/svnsync"

#Retrieve the list of repositories and UUIDs from the remote server
REPOS=`ssh $SVN_HOST 'for uuid_file in \`find /$SVN_LOC -type f -name uuid\`; do echo \`echo $uuid_file | cut -f4 -d'/'\`,\`cat $uuid_file\`; done'`

# refresh_repo function
# Example:
#   refresh_repo $REPO $UUID $SVN_LOC
#
# Note: I'm fairly certain that it is simply pulling the variables from the environment names, and not importing them
#       into the scope. So that means that strictly speaking, I should be using $1/$2/$3/$4 notation. I think.
#       However, for the sake of readability, I am leaving it as-is.
refresh_repo ()
{
  INITIALIZE="false"
  echo "Processing $REPO for UUID $UUID in $SYNC_LOC/$REPO for repo $SVN_REPO/$REPO"
  cd $SYNC_LOC

  if [ ! -d $REPO ]
  then
    echo "... Creating repository $REPO"
    svnadmin create $REPO
    echo "... Setting UUID to match source repository"
    svnadmin setuuid $REPO $UUID
    echo "... Setting INITALIZE flag to true"
    INITIALIZE="true"
  else
    echo "... Repository $REPO has already been created"
  fi

  if [ ! -f "$SYNC_LOC/$REPO/hooks/pre-revprop-change" ]
  then
    echo "... Creating hook pre-revprop-change"

cat > "$SYNC_LOC/$REPO/hooks/pre-revprop-change" <<'EOF'
#!/bin/sh 

USER="$3"

if [ "$USER" = "syncuser" ]; then exit 0; fi

echo "Only the syncuser user may change revision properties" >&2
exit 1
EOF
    chmod 755 "$SYNC_LOC/$REPO/hooks/pre-revprop-change"
    INITIALIZE="true"
  else
    echo "... Hook pre-revprop-change already exists"
  fi
  if [ ! -f "$SYNC_LOC/$REPO/hooks/start-commit" ]
  then
    echo "... Creating hook start-commit"
cat > "$SYNC_LOC/$REPO/hooks/start-commit" <<'EOF'
#!/bin/sh 

USER="$2"

if [ "$USER" = "syncuser" ]; then exit 0; fi

echo "Only the syncuser user may commit new revisions" >&2
exit 1
EOF
    chmod 755 "$SYNC_LOC/$REPO/hooks/start-commit"
    INITIALIZE="true"
  else
    echo "... Hook start-commit already exists"
  fi

  if [ "$INITIALIZE" = "true" ]
  then
    echo "... Initializing svnsync"
    svnsync initialize "file://$SYNC_LOC/$REPO" "$SVN_REPO/$REPO"
  else
    echo "... Initialization already performed"
  fi

  echo "... Synchronizing"
  svnsync synchronize --non-interactive "file://$SYNC_LOC/$REPO" 
  if [ "$?" -ne 0 ]
  then
    echo "... *** ERROR ***"
  else
    echo "... Done."
  fi
}

for i in $REPOS
do
  REPO=`echo $i | cut -f1 -d','`
  UUID=`echo $i | cut -f2 -d','`
  refresh_repo $REPO $UUID $SYNC_LOC
  echo
done