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#!/usr/bin/env bash
set -eu
echo "testing for stdio deadlock on forked workers (10s timeout)..."
# Enable a callback that trips deadlocks on forked-child stdout, time out after 10s; forces running
# in a pty, since that tends to be much slower than raw file I/O and thus more likely to trigger the deadlock.
# Redirect stdout to /dev/null since it's full of non-printable garbage we don't want to display unless it failed
ANSIBLE_CALLBACKS_ENABLED=spewstdio SPEWSTDIO_ENABLED=1 python run-with-pty.py timeout 10s ansible-playbook -i hosts -f 5 test.yml > stdout.txt && RC=$? || RC=$?
if [ $RC != 0 ]; then
echo "failed; likely stdout deadlock. dumping raw output (may be very large)"
cat stdout.txt
exit 1
fi
grep -q -e "spewstdio STARTING NONPRINTING SPEW ON BACKGROUND THREAD" stdout.txt || (echo "spewstdio callback was not enabled"; exit 1)
echo "PASS"
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