1 #/bin/bash 2 # Copyright (c) 2012 The Chromium Authors. All rights reserved. 3 # Use of this source code is governed by a BSD-style license that can be 4 # found in the LICENSE file. 5 6 # roll_autogen.sh: Helper script for removing old revisions from an svn 7 # repository. Unfortunately, the only way to discard old revisions is to clone 8 # the repository locally, use svnadmin to dump a range of commits from the local 9 # copy, re-import them into a brand-new repository, "reset" the original repo, 10 # and then import the commits from the new repository into the original. This 11 # script automates all of that except for resetting the original repository. 12 13 REPO=${REPO:-"https://skia-autogen.googlecode.com"} 14 REVS_TO_KEEP=${REVS_TO_KEEP:-50} 15 REPO_SVN="${REPO}/svn" 16 CLONE_DIR="local_clone_dir" 17 LOCAL_CLONE="$(pwd)/${CLONE_DIR}" 18 19 echo "Creating local repository in ${LOCAL_CLONE}" 20 svnadmin create ${LOCAL_CLONE} 21 pushd ${LOCAL_CLONE}/hooks > /dev/null 22 echo "#!/bin/sh" > pre-revprop-change 23 chmod 755 pre-revprop-change 24 popd > /dev/null 25 26 # Determine the latest revision. Note that any revisions committed while we 27 # were syncing will be lost forever! 28 END=`svn info ${REPO_SVN} | grep Revision | cut -c11-` 29 START=$((END-REVS_TO_KEEP)) 30 DUMPFILE="skia-autogen_r${START}-${END}.dump" 31 32 echo "Cloning ${REPO_SVN} into ${LOCAL_CLONE}..." 33 svnsync init file://${LOCAL_CLONE} ${REPO_SVN} 34 svnsync --non-interactive sync file://${LOCAL_CLONE} 35 36 echo "Dumping revisions ${START} to ${END} to ${DUMPFILE}." 37 svnadmin dump --revision ${START}:${END} ${LOCAL_CLONE} > ${DUMPFILE} 38 39 echo "Removing temporary local clone." 40 rm -rf ${LOCAL_CLONE} 41 42 echo "Re-creating local clone from ${DUMPFILE}." 43 svnadmin create ${LOCAL_CLONE} 44 svnadmin load ${LOCAL_CLONE} < ${DUMPFILE} 45 46 echo "Deleting ${DUMPFILE}" 47 rm ${DUMPFILE} 48 49 echo "Now you need to reset the remote repository. Typically, a link to do this" 50 echo "can be found at (${REPO}/adminSource). 51 echo "Please do so and press any key to continue." 52 read -n 1 -s 53 54 echo "Syncing ${LOCAL_CLONE} to ${REPO_SVN}." 55 svnsync init ${REPO_SVN} file://${LOCAL_CLONE} 56 svnsync sync ${REPO_SVN} 57 58 echo "Removing temporary local clone." 59 rm -rf ${LOCAL_CLONE} 60 61 echo "Removing local checkout." 62 rm -rf ${CHECKOUT_DIR} 63 64 echo "Finished!" 65
