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Rollup merge of #52940 - kennytm:move-checktool-protection-week, r=alexcrichton

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Align 6-week cycle check with beta promotion instead of stable release.

The regression check is to make beta promotion easier, so it makes more
sense to use the Tuesday of the release week (T-2) as the end point of the
regression prevention, instead of Thursday (T-0). But since the beta
promotion PR is sent at Tuesday evening at UTC, the protection should
include the whole Tuesday as well, meaning the 6-week cycle will start from
Wednesdays.

This will also move the start of the regression protection week one day
earlier.
This commit is contained in:
kennytm 2018-08-04 14:35:49 +08:00 committed by GitHub
commit 96179cd8fe
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1 changed files with 6 additions and 4 deletions
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10
src/ci/docker/x86_64-gnu-tools/checktools.sh
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@ -17,9 +17,11 @@ TOOLSTATE_FILE="$(realpath $2)"
OS="$3"
COMMIT="$(git rev-parse HEAD)"
CHANGED_FILES="$(git diff --name-status HEAD HEAD^)"
SIX_WEEK_CYCLE="$(( ($(date +%s) / 604800 - 3) % 6 ))"
# ^ 1970 Jan 1st is a Thursday, and our release dates are also on Thursdays,
# thus we could divide by 604800 (7 days in seconds) directly.
SIX_WEEK_CYCLE="$(( ($(date +%s) / 86400 - 20) % 42 ))"
# ^ Number of days after the last promotion of beta.
# Its value is 41 on the Tuesday where "Promote master to beta (T-2)" happens.
# The Wednesday after this has value 0.
# We track this value to prevent regressing tools in the last week of the 6-week cycle.
touch "$TOOLSTATE_FILE"
@ -98,7 +100,7 @@ change_toolstate() {
if python2.7 "$CHECK_NOT" "$OS" "$TOOLSTATE_FILE" "_data/latest.json" changed; then
echo 'Toolstate is not changed. Not updating.'
else
if [ $SIX_WEEK_CYCLE -eq 5 ]; then
if [ $SIX_WEEK_CYCLE -ge 35 ]; then
python2.7 "$CHECK_NOT" "$OS" "$TOOLSTATE_FILE" "_data/latest.json" regressed
fi
sed -i "1 a\\