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#!/usr/bin/env bash
# vim: sw=2 et
set -euo pipefail
NOTES_ORIGIN="https://gitlab.haskell.org/ghc/ghc-performance-notes.git"
NOTES_ORIGIN_PUSH="git@gitlab.haskell.org:ghc/ghc-performance-notes.git"
REF="perf"
run() {
echo "$@"
$@
}
fail() {
echo "ERROR: $*" >&2
exit 1
}
function pull() {
local ref="refs/notes/$REF"
run git fetch -f $NOTES_ORIGIN $ref:$ref
echo "perf notes ref $ref is $(git rev-parse $ref)"
}
function setup_ssh() {
# Add gitlab as a known host.
mkdir -p ~/.ssh
echo "|1|+AUrMGS1elvPeLNt+NHGa5+c6pU=|4XvfRsQftO1OgZD4c0JJ7oNaii8= ssh-rsa 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" >> ~/.ssh/known_hosts
echo "|1|JZkdAPJmpX6SzGeqhmQLfMWLGQA=|4vTELroOlbFxbCr0WX+PK9EcpD0= ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJknufU+I6A5Nm58lmse4/o11Ai2UzYbYe7782J1+kRk" >> ~/.ssh/known_hosts
# Setup ssh keys.
eval `ssh-agent`
echo "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDJPR1vrZgeGTXmgJw2PsJfMjf22LcDnVVwt3l0rwTZ+8Q2J0bHaYxMRKBco1sON6LGcZepw0Hy76RQ87v057pTz18SXvnfE7U/B6v9qBk0ILJz+4BOX9sEhxu2XmScp/wMxkG9IoyruMlsxXzd1sz09o+rzzx24U2Rp27PRm08vG0oipve6BWLbYEqYrE4/nCufqOJmGd56fju7OTU0lTpEkGDEDWGMxutaX2CbTbDju7qy07Ld8BjSc9aHfvuQaslUbj3ex3EF8EXahURzGpHQn/UFFzVGMokFumiJCAagHQb7cj6jOkKseZLaysbA/mTBQsOzjWiRmkN23bQf1wF ben+ghc-ci@smart-cactus.org" > ~/.ssh/perf_rsa.pub
touch ~/.ssh/perf_rsa
chmod 0600 ~/.ssh/perf_rsa
echo "$PERF_NOTE_KEY" >> ~/.ssh/perf_rsa
ssh-add ~/.ssh/perf_rsa
}
# Reset the git notes and append the metrics file to the notes, then push and return the result.
# This is favoured over a git notes merge as it avoids potential data loss/duplication from the merge strategy.
function reset_append_note_push {
pull || true
run git notes --ref=$REF append -F $METRICS_FILE HEAD
run git push $NOTES_ORIGIN_PUSH refs/notes/$REF
}
function push() {
# Check that private key is available (Set on all GitLab protected branches).
if [ -z ${PERF_NOTE_KEY+"$PERF_NOTE_KEY"} ]
then
echo "Not pushing performance git notes: PERF_NOTE_KEY is not set."
exit 0
fi
# TEST_ENV must be set.
if [ -z ${TEST_ENV+"$TEST_ENV"} ]
then
fail "Not pushing performance git notes: TEST_ENV must be set."
fi
# Assert that the METRICS_FILE exists and can be read.
if [ -z ${METRICS_FILE+"$METRICS_FILE"} ]
then
fail "\$METRICS_FILE not set."
fi
if ! [ -r $METRICS_FILE ]
then
fail "Metrics file not found: $METRICS_FILE"
fi
setup_ssh
# Push the metrics file as a git note. This may fail if another task pushes a note first. In that case
# the latest note is fetched and appended.
MAX_RETRY=20
until reset_append_note_push || [ $MAX_RETRY -le 0 ]
do
((MAX_RETRY--))
echo ""
echo "Failed to push git notes. Fetching, appending, and retrying... $MAX_RETRY retries left."
done
}
case $1 in
push) push ;;
pull) pull ;;
*) fail "Invalid mode $1" ;;
esac
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