Chris@1543: #!/bin/bash
Chris@1543: 
Chris@1543: set -e
Chris@1543: 
Chris@1543: progdir=$(dirname $0)
Chris@1543: case "$progdir" in
Chris@1543:     /*) ;;
Chris@1543:     *) progdir="$(pwd)/$progdir" ;;
Chris@1543: esac
Chris@1543: 
Chris@1543: rails_scriptdir="$progdir/../../script"
Chris@1543: rails="$rails_scriptdir/rails"
Chris@1543: 
Chris@1543: if [ ! -x "$rails" ]; then
Chris@1543:     echo "Expected to find rails executable at $rails"
Chris@1543:     exit 2
Chris@1543: fi
Chris@1543: 
Chris@1543: fastexport="$progdir/../fast-export/hg-fast-export.sh"
Chris@1543: if [ ! -x "$fastexport" ]; then
Chris@1543:     echo "Expected to find hg-fast-export.sh executable at $fastexport"
Chris@1543:     exit 2
Chris@1543: fi
Chris@1543: 
Chris@1546: environment="$1"
Chris@1546: hgdir="$2"
Chris@1546: gitdir="$3"
Chris@1543: 
Chris@1543: if [ -z "$hgdir" ] || [ -z "$gitdir" ]; then
Chris@1546:     echo "Usage: $0 <environment> <hgdir> <gitdir>"
Chris@1546:     echo "  where"
Chris@1546:     echo "  - environment is the Rails environment (development or production)"
Chris@1546:     echo "  - hgdir is the directory containing project Mercurial repositories"
Chris@1546:     echo "  - gitdir is the directory in which output git repositories are to be"
Chris@1546:     echo "    created or updated"
Chris@1543:     exit 2
Chris@1543: fi
Chris@1543: 
Chris@1543: if [ ! -d "$hgdir" ]; then
Chris@1543:     echo "Mercurial repository directory $hgdir not found"
Chris@1543:     exit 1
Chris@1543: fi
Chris@1543: 
Chris@1543: if [ ! -d "$gitdir" ]; then
Chris@1543:     echo "Target git repository dir $gitdir not found (please create at least the empty directory)"
Chris@1543:     exit 1
Chris@1543: fi
Chris@1543: 
Chris@1543: set -u
Chris@1543: 
Chris@1550: authordir="$gitdir/__AUTHORMAPS"
Chris@1543: mkdir -p "$authordir"
Chris@1543: 
Chris@1550: wastedir="$gitdir/__WASTE"
Chris@1550: mkdir -p "$wastedir"
Chris@1550: 
Chris@1557: echo
Chris@1557: echo "$0 starting at $(date)"
Chris@1557: 
Chris@1547: echo "Extracting author maps..."
Chris@1546: 
Chris@1550: # Delete any existing authormap files, because we want to ensure we
Chris@1550: # don't have an authormap for any project that was exportable but has
Chris@1550: # become non-exportable (e.g. has gone private)
Chris@1551: rm -f "$authordir/*"
Chris@1550: 
Chris@1546: "$rails" runner -e "$environment" "$progdir/create-repo-authormaps.rb" \
Chris@1543: 	 -s "$hgdir" -o "$authordir"
Chris@1543: 
Chris@1543: for hgrepo in "$hgdir"/*; do
Chris@1543: 
Chris@1543:     if [ ! -d "$hgrepo/.hg" ]; then
Chris@1543: 	echo "Directory $hgrepo does not appear to be a Mercurial repo, skipping"
Chris@1543: 	continue
Chris@1543:     fi
Chris@1543: 
Chris@1543:     reponame=$(basename "$hgrepo")
Chris@1543:     authormap="$authordir/authormap_$reponame"
Chris@1559: 
Chris@1559:     git_repodir="$gitdir/$reponame"
Chris@1543: 
Chris@1543:     if [ ! -f "$authormap" ]; then
Chris@1547: 	echo "No authormap file was created for repo $reponame, skipping"
Chris@1550: 
Chris@1550: 	# If there is no authormap file, then we should not have a git
Chris@1550: 	# mirror -- this is a form of access control, not just an
Chris@1550: 	# optimisation (authormap files are expected to exist for all
Chris@1550: 	# exportable projects, even if empty). So if a git mirror
Chris@1550: 	# exists, we move it away
Chris@1560: 	if [ -d "$git_repodir" ]; then
Chris@1560: 	    mv "$git_repodir" "$wastedir/$(date +%s).$reponame"
Chris@1550: 	fi
Chris@1550: 	    
Chris@1543: 	continue
Chris@1543:     fi
Chris@1543:     
Chris@1559:     if [ ! -d "$git_repodir" ]; then
Chris@1561: 	git init --bare "$git_repodir"
Chris@1543:     fi
Chris@1543: 
Chris@1547:     echo
Chris@1546:     echo "About to run fast export for repo $reponame..."
Chris@1543:     
Chris@1543:     (
Chris@1561: 	cd "$git_repodir"
Chris@1549: 
Chris@1549:         # Force is necessary because git-fast-import (or git) can't handle
Chris@1549:         # branches having more than one head ("Error: repository has at
Chris@1549:         # least one unnamed head"), which happens from time to time in
Chris@1549:         # valid Hg repos. With --force apparently it will just pick one
Chris@1549:         # of the two heads arbitrarily, which is also alarming but is
Chris@1549:         # more likely to be useful 
Chris@1558: 	"$fastexport" --quiet -r "$hgrepo" --hgtags -A "$authormap" --force
Chris@1555: 
Chris@1555:         git update-server-info
Chris@1543:     )
Chris@1543: 
Chris@1543:     echo "Fast export done"
Chris@1543:     
Chris@1543: done
Chris@1543: 
Chris@1557: echo "$0 finishing at $(date)"
Chris@1543: