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v8/tools/push-to-trunk.sh

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#!/bin/bash
# Copyright 2012 the V8 project authors. All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
########## Global variable definitions
BRANCHNAME=prepare-push
TRUNKBRANCH=trunk-push
PERSISTFILE_BASENAME=/tmp/v8-push-to-trunk-tempfile
CHROME_PATH=
########## Function definitions
source $(dirname $BASH_SOURCE)/common-includes.sh
usage() {
cat << EOF
usage: $0 OPTIONS
Performs the necessary steps for a V8 push to trunk. Only works for \
git checkouts.
OPTIONS:
-h Show this message
-s Specify the step where to start work. Default: 0.
-l Manually specify the git commit ID of the last push to trunk.
-c Specify the path to your Chromium src/ directory to automate the
V8 roll.
EOF
}
########## Option parsing
while getopts ":hs:l:c:" OPTION ; do
case $OPTION in
h) usage
exit 0
;;
s) START_STEP=$OPTARG
;;
l) LASTPUSH=$OPTARG
;;
c) CHROME_PATH=$OPTARG
;;
?) echo "Illegal option: -$OPTARG"
usage
exit 1
;;
esac
done
########## Regular workflow
initial_environment_checks
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Preparation"
common_prepare
delete_branch $TRUNKBRANCH
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Create a fresh branch."
git checkout -b $BRANCHNAME svn/bleeding_edge \
|| die "Creating branch $BRANCHNAME failed."
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Detect commit ID of last push to trunk."
[[ -n "$LASTPUSH" ]] || LASTPUSH=$(git log -1 --format=%H ChangeLog)
LOOP=1
while [ $LOOP -eq 1 ] ; do
# Print assumed commit, circumventing git's pager.
git log -1 $LASTPUSH | cat
confirm "Is the commit printed above the last push to trunk?"
if [ $? -eq 0 ] ; then
LOOP=0
else
LASTPUSH=$(git log -1 --format=%H $LASTPUSH^ ChangeLog)
fi
done
persist "LASTPUSH"
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Prepare raw ChangeLog entry."
# These version numbers are used again later for the trunk commit.
read_and_persist_version
DATE=$(date +%Y-%m-%d)
persist "DATE"
echo "$DATE: Version $MAJOR.$MINOR.$BUILD" > "$CHANGELOG_ENTRY_FILE"
echo "" >> "$CHANGELOG_ENTRY_FILE"
COMMITS=$(git log $LASTPUSH..HEAD --format=%H)
for commit in $COMMITS ; do
# Get the commit's title line.
git log -1 $commit --format="%w(80,8,8)%s" >> "$CHANGELOG_ENTRY_FILE"
# Grep for "BUG=xxxx" lines in the commit message and convert them to
# "(issue xxxx)".
git log -1 $commit --format="%B" \
| grep "^BUG=" | grep -v "BUG=$" | grep -v "BUG=none$" \
| sed -e 's/^/ /' \
| sed -e 's/BUG=v8:\(.*\)$/(issue \1)/' \
| sed -e 's/BUG=\(.*\)$/(Chromium issue \1)/' \
>> "$CHANGELOG_ENTRY_FILE"
# Append the commit's author for reference.
git log -1 $commit --format="%w(80,8,8)(%an)" >> "$CHANGELOG_ENTRY_FILE"
echo "" >> "$CHANGELOG_ENTRY_FILE"
done
echo " Performance and stability improvements on all platforms." \
>> "$CHANGELOG_ENTRY_FILE"
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Edit ChangeLog entry."
echo -n "Please press <Return> to have your EDITOR open the ChangeLog entry, \
then edit its contents to your liking. When you're done, save the file and \
exit your EDITOR. "
read ANSWER
$EDITOR "$CHANGELOG_ENTRY_FILE"
NEWCHANGELOG=$(mktemp)
# Eliminate any trailing newlines by going through a shell variable.
# Also (1) eliminate tabs, (2) fix too little and (3) too much indentation,
# and (4) eliminate trailing whitespace.
CHANGELOGENTRY=$(cat "$CHANGELOG_ENTRY_FILE" \
| sed -e 's/\t/ /g' \
| sed -e 's/^ \{1,7\}\([^ ]\)/ \1/g' \
| sed -e 's/^ \{9,80\}\([^ ]\)/ \1/g' \
| sed -e 's/ \+$//')
[[ -n "$CHANGELOGENTRY" ]] || die "Empty ChangeLog entry."
echo "$CHANGELOGENTRY" > "$NEWCHANGELOG"
echo "" >> "$NEWCHANGELOG" # Explicitly insert two empty lines.
echo "" >> "$NEWCHANGELOG"
cat ChangeLog >> "$NEWCHANGELOG"
mv "$NEWCHANGELOG" ChangeLog
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Increment version number."
restore_if_unset "BUILD"
NEWBUILD=$(($BUILD + 1))
confirm "Automatically increment BUILD_NUMBER? (Saying 'n' will fire up \
your EDITOR on $VERSION_FILE so you can make arbitrary changes. When \
you're done, save the file and exit your EDITOR.)"
if [ $? -eq 0 ] ; then
sed -e "/#define BUILD_NUMBER/s/[0-9]*$/$NEWBUILD/" \
-i "$VERSION_FILE"
else
$EDITOR "$VERSION_FILE"
fi
read_and_persist_version "NEW"
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Commit to local branch."
restore_version_if_unset "NEW"
PREPARE_COMMIT_MSG="Prepare push to trunk. \
Now working on version $NEWMAJOR.$NEWMINOR.$NEWBUILD."
persist "PREPARE_COMMIT_MSG"
git commit -a -m "$PREPARE_COMMIT_MSG" \
|| die "'git commit -a' failed."
fi
upload_step
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Commit to the repository."
wait_for_lgtm
# Re-read the ChangeLog entry (to pick up possible changes).
cat ChangeLog | awk --posix '{
if ($0 ~ /^[0-9]{4}-[0-9]{2}-[0-9]{2}:/) {
if (in_firstblock == 1) {
exit 0;
} else {
in_firstblock = 1;
}
};
print $0;
}' > "$CHANGELOG_ENTRY_FILE"
git cl dcommit || die "'git cl dcommit' failed, please try again."
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Fetch straggler commits that sneaked in \
since this script was started."
git svn fetch || die "'git svn fetch' failed."
git checkout svn/bleeding_edge
restore_if_unset "PREPARE_COMMIT_MSG"
PREPARE_COMMIT_HASH=$(git log -1 --format=%H --grep="$PREPARE_COMMIT_MSG")
persist "PREPARE_COMMIT_HASH"
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Squash commits into one."
# Instead of relying on "git rebase -i", we'll just create a diff, because
# that's easier to automate.
restore_if_unset "PREPARE_COMMIT_HASH"
git diff svn/trunk $PREPARE_COMMIT_HASH > "$PATCH_FILE"
# Convert the ChangeLog entry to commit message format:
# - remove date
# - remove indentation
# - merge paragraphs into single long lines, keeping empty lines between them.
restore_if_unset "DATE"
CHANGELOGENTRY=$(cat "$CHANGELOG_ENTRY_FILE")
echo "$CHANGELOGENTRY" \
| sed -e "s/^$DATE: //" \
| sed -e 's/^ *//' \
| awk '{
if (need_space == 1) {
printf(" ");
};
printf("%s", $0);
if ($0 ~ /^$/) {
printf("\n\n");
need_space = 0;
} else {
need_space = 1;
}
}' > "$COMMITMSG_FILE" || die "Commit message editing failed."
rm -f "$CHANGELOG_ENTRY_FILE"
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Create a new branch from trunk."
git checkout -b $TRUNKBRANCH svn/trunk \
|| die "Checking out a new branch '$TRUNKBRANCH' failed."
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Apply squashed changes."
rm -f "$TOUCHED_FILES_FILE"
apply_patch "$PATCH_FILE"
stage_files
rm -f "$PATCH_FILE"
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Set correct version for trunk."
restore_version_if_unset
sed -e "/#define MAJOR_VERSION/s/[0-9]*$/$MAJOR/" \
-e "/#define MINOR_VERSION/s/[0-9]*$/$MINOR/" \
-e "/#define BUILD_NUMBER/s/[0-9]*$/$BUILD/" \
-e "/#define PATCH_LEVEL/s/[0-9]*$/0/" \
-e "/#define IS_CANDIDATE_VERSION/s/[0-9]*$/0/" \
-i "$VERSION_FILE" || die "Patching $VERSION_FILE failed."
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Commit to local trunk branch."
git add "$VERSION_FILE"
git commit -F "$COMMITMSG_FILE" || die "'git commit' failed."
rm -f "$COMMITMSG_FILE"
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Sanity check."
confirm "Please check if your local checkout is sane: Inspect $VERSION_FILE, \
compile, run tests. Do you want to commit this new trunk revision to the \
repository?"
[[ $? -eq 0 ]] || die "Execution canceled."
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Commit to SVN."
git svn dcommit | tee >(grep -E "^Committed r[0-9]+" \
| sed -e 's/^Committed r\([0-9]\+\)/\1/' \
> "$TRUNK_REVISION_FILE") \
|| die "'git svn dcommit' failed."
TRUNK_REVISION=$(cat "$TRUNK_REVISION_FILE")
persist "TRUNK_REVISION"
rm -f "$TRUNK_REVISION_FILE"
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Tag the new revision."
restore_version_if_unset
git svn tag $MAJOR.$MINOR.$BUILD -m "Tagging version $MAJOR.$MINOR.$BUILD" \
|| die "'git svn tag' failed."
fi
if [ -n "$CHROME_PATH" ] ; then
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Switch to Chromium checkout."
V8_PATH=$(pwd)
persist "V8_PATH"
cd "$CHROME_PATH"
initial_environment_checks
# Check for a clean workdir.
[[ -z "$(git status -s -uno)" ]] \
|| die "Workspace is not clean. Please commit or undo your changes."
# Assert that the DEPS file is there.
[[ -w "DEPS" ]] || die "DEPS file not present or not writable; \
current directory is: $(pwd)."
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Update the checkout and create a new branch."
git checkout master || die "'git checkout master' failed."
git pull || die "'git pull' failed, please try again."
restore_if_unset "TRUNK_REVISION"
git checkout -b "v8-roll-$TRUNK_REVISION" \
|| die "Failed to checkout a new branch."
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Create and upload CL."
# Patch DEPS file.
sed -r -e "/\"v8_revision\": /s/\"[0-9]+\"/\"$TRUNK_REVISION\"/" \
-i DEPS
restore_version_if_unset
echo -n "Please enter the email address of a reviewer for the roll CL: "
read REVIEWER
git commit -am "Update V8 to version $MAJOR.$MINOR.$BUILD.
TBR=$REVIEWER" || die "'git commit' failed."
git cl upload --send-mail \
|| die "'git cl upload' failed, please try again."
echo "CL uploaded."
fi
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Returning to V8 checkout."
restore_if_unset "V8_PATH"
cd "$V8_PATH"
fi
fi # if [ -n "$CHROME_PATH" ]
let CURRENT_STEP+=1
if [ $START_STEP -le $CURRENT_STEP ] ; then
echo ">>> Step $CURRENT_STEP: Done!"
restore_version_if_unset
restore_if_unset "TRUNK_REVISION"
if [ -n "$CHROME_PATH" ] ; then
echo "Congratulations, you have successfully created the trunk revision \
$MAJOR.$MINOR.$BUILD and rolled it into Chromium. Please don't forget to \
update the v8rel spreadsheet:"
else
echo "Congratulations, you have successfully created the trunk revision \
$MAJOR.$MINOR.$BUILD. Please don't forget to roll this new version into \
Chromium, and to update the v8rel spreadsheet:"
fi
echo -e "$MAJOR.$MINOR.$BUILD\ttrunk\t$TRUNK_REVISION"
common_cleanup
[[ "$TRUNKBRANCH" != "$CURRENT_BRANCH" ]] && git branch -D $TRUNKBRANCH
fi
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