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rfc.sh
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rfc.sh
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#!/bin/sh -e
# Since we run with '#!/bin/sh -e'
# '$? != 0' will force an exit,
# i.e. where we are interested in the result of a command,
# we have to run the command in an if-statement.
ORIGIN=${GLUSTER_ORIGIN:-origin}
while getopts "v" opt; do
case $opt in
v)
# Verbose mode
git () { >&2 echo "git $@" && `which git` $@; }
;;
esac
done
# Move the positional arguments to the beginning
shift $((OPTIND-1))
branch="master";
set_hooks_commit_msg()
{
f=".git/hooks/commit-msg";
u="http://review.gluster.org/tools/hooks/commit-msg";
if [ -x "$f" ]; then
return;
fi
curl -L -o $f $u || wget -O $f $u;
chmod +x $f
# Let the 'Change-Id: ' header get assigned on first run of rfc.sh
GIT_EDITOR=true git commit --amend;
}
is_num()
{
local num;
num="$1";
[ -z "$(echo $num | sed -e 's/[0-9]//g')" ]
}
backport_id_message()
{
echo ""
echo "This commit is to a non-master branch, and hence is treated as a backport."
echo ""
echo "For backports we would like to retain the same gerrit Change-Id across"
echo "branches. On auto inspection it is found that a gerrit Change-Id is"
echo "missing, or the Change-Id is not found on your local master"
echo ""
echo "This could mean a few things:"
echo " 1. This is not a backport, hence choose Y on the prompt to proceed"
echo " 2. Your $ORIGIN master is not up to date, hence the script is unable"
echo " to find the corresponding Change-Id on master. Either choose N,"
echo " 'git fetch', and try again, OR if you are sure you used the"
echo " same Change-Id, choose Y at the prompt to proceed"
echo " 3. You commented or removed the Change-Id in your commit message after"
echo " cherry picking the commit. Choose N, fix the commit message to"
echo " use the same Change-Id as master (git commit --amend), resubmit"
echo ""
}
check_backport()
{
moveon='N'
# Backports are never made to master
if [ $branch = "master" ]; then
return;
fi
# Extract the change ID from the commit message
changeid=$(git show --format='%b' | grep -i '^Change-Id: ' | awk '{print $2}')
# If there is no change ID ask if we should continue
if [ -z "$changeid" ]; then
backport_id_message;
echo -n "Did not find a Change-Id for a possible backport. Continue (y/N): "
read moveon
else
# Search master for the same change ID (rebase_changes has run, so we
# should never not find a Change-Id)
mchangeid=$(git log $ORIGIN/master --format='%b' --grep="^Change-Id: ${changeid}" | grep ${changeid} | awk '{print $2}')
# Check if we found the change ID on master, else throw a message to
# decide if we should continue.
# NOTE: If master was not rebased, we will not find the Change-ID and
# could hit a false positive case here (or if someone checks out some
# other branch as master).
if [ "${mchangeid}" = "${changeid}" ]; then
moveon="Y"
else
backport_id_message;
echo "Change-Id of commit: $changeid"
echo "Change-Id on master: $mchangeid"
echo -n "Did not find mentioned Change-Id on master for a possible backport. Continue (y/N): "
read moveon
fi
fi
if [ "${moveon}" = 'Y' ] || [ "${moveon}" = 'y' ]; then
return;
else
exit 1
fi
}
rebase_changes()
{
GIT_EDITOR=$0 git rebase -i $ORIGIN/$branch;
}
editor_mode()
{
if [ $(basename "$1") = "git-rebase-todo" ]; then
sed 's/^pick /reword /g' "$1" > $1.new && mv $1.new $1;
return;
fi
if [ $(basename "$1") = "COMMIT_EDITMSG" ]; then
if grep -qi '^BUG: ' $1; then
return;
fi
while true; do
echo Commit: "\"$(head -n 1 $1)\""
echo -n "Enter Bug ID: "
read bug
if [ -z "$bug" ]; then
return;
fi
if ! is_num "$bug"; then
echo "Invalid Bug ID ($bug)!!!";
continue;
fi
sed "/^Change-Id:/{p; s/^.*$/BUG: $bug/;}" $1 > $1.new && \
mv $1.new $1;
return;
done
fi
cat <<EOF
$0 - editor_mode called on unrecognized file $1 with content:
$(cat $1)
EOF
return 1;
}
assert_diverge()
{
git diff $ORIGIN/$branch..HEAD | grep -q .;
}
check_patches_for_coding_style()
{
git fetch $ORIGIN;
check_patch_script=./build-aux/checkpatch.pl
if [ ! -e ${check_patch_script} ] ; then
echo "${check_patch_script} is not executable .. abort"
exit 1
fi
# The URL of our Gerrit server
export GERRIT_URL="review.gluster.org"
echo "Running coding guidelines check ..."
head=$(git rev-parse --abbrev-ref HEAD)
# Kludge: "1>&2 && echo $? || echo $?" is to get around
# "-e" from script invocation
RES=$(git format-patch --stdout $ORIGIN/${branch}..${head} \
| ${check_patch_script} --strict --terse - 1>&2 && echo $? || echo $?)
if [ "$RES" -eq 1 ] ; then
echo "Errors caught, get details by:"
echo " git format-patch --stdout $ORIGIN/${branch}..${head} \\"
echo " | ${check_patch_script} --strict --gerrit-url ${GERRIT_URL} -"
echo "and correct errors"
exit 1
elif [ "$RES" -eq 2 ] ; then
echo "Warnings or checks caught, get details by:"
echo " git format-patch --stdout $ORIGIN/${branch}..${head} \\"
echo " | ${check_patch_script} --strict --gerrit-url ${GERRIT_URL} -"
echo -n "Do you want to continue anyway [no/yes]: "
read yesno
if [ "${yesno}" != "yes" ] ; then
echo "Aborting..."
exit 1
fi
fi
}
github_issue_message()
{
echo ""
echo "=== Missing a github issue reference in a potential enhancement! ==="
echo ""
echo "Gluster code submissions that are enhancements (IOW, not functional"
echo "bug fixes, but improvements of any nature to the code) are tracked"
echo "using github issues. A check on the commit message, reveals that"
echo "there is no bug associated with this change, hence it could be a"
echo "potential code improvement or feature enhancement"
echo ""
echo "If this is an enhancement, request a github issue be filed at [1]"
echo "and referenced in the commit message as,"
echo "\"Fixes gluster/glusterfs#n\" OR \"Updates gluster/glusterfs#n\","
echo "where n is the issue number"
echo ""
echo "You can reference multiple issues that this commit addresses as,"
echo "\"fixes gluster/glusterfs#n, updates gluster/glusterfs#m\", and so on"
echo ""
echo "[1] https://github.com/gluster/glusterfs/issues/new"
echo ""
echo "You may abort the submission choosing 'N' below and use"
echo "'git commit --amend' to add the issue reference before posting"
echo "to gerrit. If this is a bug fix, choose 'Y' to continue."
echo ""
}
check_for_github_issue()
{
# NOTE: Since we run '#!/bin/sh -e', the check is in an if,
# as grep count maybe 0
#
# Regex elaborated:
# grep -w -> --word-regexp (from the man page)
# Select only those lines containing matches that form whole words.
# The test is that the matching substring must either be at the
# beginning of the line, or preceded by a non-word constituent
# character. Similarly, it must be either at the end of the line or
# followed by a non-word constituent character. Word-constituent
# characters are letters, digits, and the underscore.
# IOW, the above helps us find the pattern with leading or training spaces
# or non word consituents like , or ;
#
# grep -c -> gives us a count of matches, which is all we need here
#
# [fF][iI][xX][eE][sS]|[uU][pP][dD][aA][tT][eE][sS])
# Finds 'fixes' OR 'updates' in any case combination
#
# (:)?
# Followed by an optional : (colon)
#
# [[:space:]]+
# followed by 1 or more spaces
#
# (gluster\/glusterfs)?
# Followed by 0 or more gluster/glusterfs
#
# #
# Followed by #
#
# [[:digit:]]+
# Followed by 1 or more digits
if [ 0 = "$(git log --format=%B -n 1 | grep -cow -E "([fF][iI][xX][eE][sS]|[uU][pP][dD][aA][tT][eE][sS])(:)?[[:space:]]+(gluster\/glusterfs)?#[[:digit:]]+")" ]; then
moveon='N'
github_issue_message;
echo -n "Missing github issue reference in a potential RFE. Continue (y/N): "
read moveon
if [ "${moveon}" = 'Y' ] || [ "${moveon}" = 'y' ]; then
return;
else
exit 1
fi
fi
}
main()
{
set_hooks_commit_msg;
# rfc.sh calls itself from rebase_changes, which uses rfc.sh as the EDITOR
# thus, getting the commit message to work with in the editor_mode.
if [ -e "$1" ]; then
editor_mode "$@";
return;
fi
check_patches_for_coding_style;
rebase_changes;
check_backport;
assert_diverge;
bug=$(git show --format='%b' | grep -i '^BUG: ' | awk '{print $2}');
# If this is a commit against master and does not have a bug ID
# it could be a feature or an RFE, check if there is a github
# issue reference, and if not suggest commit message amendment
if [ -z "$bug" ] && [ $branch = "master" ]; then
check_for_github_issue;
fi
if [ "$DRY_RUN" = 1 ]; then
drier='echo -e Please use the following command to send your commits to review:\n\n'
else
drier=
fi
if [ -z "$bug" ]; then
$drier git push $ORIGIN HEAD:refs/for/$branch/rfc;
else
$drier git push $ORIGIN HEAD:refs/for/$branch/bug-$bug;
fi
}
main "$@"