view tests/fixtures/externals.sh @ 890:78db88de9622

Partial metadata rebuilding For highly active subversion repositories, it can be excruciatingly slow to pull updates one at a time from subversion. One way around this is to setup another mercurial repo that pulls new commits from svn periodicly (say every 5 minutes). When you want to update your repository, you can pull commits from this mercurial repository via native mercurial protocols, which will be much faster than pulling directly from svn. Unfortunately, your metadata will be out of date after doing so. Highly active repositories also tend to be very large, which means that it takes a long time to rebuild your metadata from scratch. To address this, this adds support to do a partial rebuild on the metadata by processing only revisions that have been added to the repository after the last revision we processed. With the rev map 1k revisions (~2 days) behind tip updatemeta is dramatically faster than rebuild meta: $ hg --time svn updatemeta Time: real 0.570 secs (user 0.480+0.000 sys 0.060+0.000) $ hg --time svn rebuildmeta Time: real 129.160 secs (user 128.570+0.000 sys 0.320+0.000)
author David Schleimer <dschleimer@fb.com>
date Sat, 12 May 2012 07:28:23 -0700
parents a5be5ca638de
children
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#!/bin/sh
#
# Generate externals.svndump
#

mkdir temp
cd temp

mkdir project-orig
cd project-orig
mkdir trunk
mkdir branches
mkdir externals
cd ..

svnadmin create testrepo
svnurl=file://`pwd`/testrepo
svn import project-orig $svnurl -m "init project"

svn co $svnurl project
cd project/externals
mkdir project1
echo a > project1/a
svn add project1
mkdir project2
echo a > project2/b
svn add project2
svn ci -m "configure externals projects"
cd ../trunk
# Add an external reference
echo a > a
svn add a
cat > externals <<EOF
^/externals/project1 deps/project1
EOF
svn propset -F externals svn:externals .
svn ci -m "set externals on ."
# Add another one
cat > externals <<EOF
# A comment, then an empty line, then a blank line

^/externals/project1 deps/project1
    
-r2 ^/externals/project2@2 deps/project2
EOF
svn propset -F externals svn:externals .
svn ci -m "update externals on ."
# Suppress an external and add one on a subdir
cat > externals <<EOF
-r2 ^/externals/project2@2 deps/project2
EOF
svn propset -F externals svn:externals .
mkdir subdir
mkdir subdir2
svn add subdir subdir2
cat > externals <<EOF
^/externals/project1 deps/project1
EOF
svn propset -F externals svn:externals subdir subdir2
svn ci -m "add on subdir"
# Test branch with externals
svn up
cd ../branches
svn copy ../trunk branch1
svn propdel svn:externals branch1/subdir2
svn ci -m 'externals in subtree'
# Test branch with externals, removing on copy root
svn copy ../trunk branch2
svn propdel svn:externals branch2 branch2/subdir2
svn ci -m 'externals in subtree, removed on root'
cd ../trunk
# Suppress the subdirectory
svn rm --force subdir
svn ci -m 'remove externals subdir'
# Remove the property on subdir2
svn propdel svn:externals subdir2
svn ci -m 'remove externals subdir2'
# Kill project2 externals, peg revision should preserve it
cd ..
svn up
svn rm externals/project2
svn ci -m 'remove externals project2'
cd trunk
echo a >> a
svn ci -m 'change a'
cd ../..

svnadmin dump testrepo > ../externals.svndump