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#!/usr/bin/env bash
# Verify that nothing bad occurs if a node stalls and the leader
# broadcast timeout triggers
. "${TEST_SCRIPTS_DIR}/integration.bash"
set -e
ctdb_test_init
select_test_node
echo
echo 'Get "leader timeout":'
conf_tool="${CTDB_SCRIPTS_HELPER_BINDIR}/ctdb-config"
# shellcheck disable=SC2154
# $test_node set by select_test_node() above
try_command_on_node "$test_node" "${conf_tool} get cluster 'leader timeout'"
# shellcheck disable=SC2154
# $out set by ctdb_onnode() above
leader_timeout="$out"
echo "Leader timeout is ${leader_timeout} seconds"
echo
# Assume leader timeout is reasonable and doesn't cause node to be
# disconnected
stall_time=$((leader_timeout * 2))
generation_get "$test_node"
echo "Get ctdbd PID on node ${test_node}..."
ctdb_onnode -v "$test_node" "getpid"
ctdbd_pid="$out"
echo
echo "Sending SIGSTOP to ctdbd on ${test_node}"
try_command_on_node "$test_node" "kill -STOP ${ctdbd_pid}"
sleep_for "$stall_time"
echo "Sending SIGCONT to ctdbd on ${test_node}"
try_command_on_node "$test_node" "kill -CONT ${ctdbd_pid}"
echo
wait_until_generation_has_changed "$test_node"
cluster_is_healthy
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