Differential D6379 Diff 20948 contrib/devtools/bitcoind-exit-on-log.sh

Changeset View

Standalone View

contrib/devtools/bitcoind-exit-on-log.sh

#!/usr/bin/env bash		#!/usr/bin/env bash

export LC_ALL=C		export LC_ALL=C

set -euxo pipefail		set -euxo pipefail

		# Do not leave any dangling subprocesses when this script exits
		trap "kill 0" SIGINT

TOPLEVEL=$(git rev-parse --show-toplevel)		TOPLEVEL=$(git rev-parse --show-toplevel)
DEFAULT_BITCOIND="${TOPLEVEL}/build/src/bitcoind"		DEFAULT_BITCOIND="${TOPLEVEL}/build/src/bitcoind"
DEFAULT_LOG_FILE=~/".bitcoin/debug.log"		DEFAULT_LOG_FILE=~/".bitcoin/debug.log"

help_message() {		help_message() {
set +x		set +x
echo "Run bitcoind until a given log message is encountered, then kill bitcoind."		echo "Run bitcoind until a given log message is encountered, then kill bitcoind."
echo ""		echo ""
▲ Show 20 Lines • Show All 54 Lines • ▼ Show 20 Lines	*)
;;		;;
esac		esac
done		done

if [ -z "${GREP_PATTERN}" ]; then		if [ -z "${GREP_PATTERN}" ]; then
echo "Error: A grep pattern was not specified."		echo "Error: A grep pattern was not specified."
echo ""		echo ""
help_message		help_message
exit 1		exit 2
fi		fi

# Make sure the debug log exists so that tail does not fail		# Make sure the debug log exists so that tail does not fail
touch "${LOG_FILE}"		touch "${LOG_FILE}"

# Launch bitcoind using custom parameters		# Launch bitcoind using custom parameters
read -a BITCOIND_PARAMS <<< "${BITCOIND_PARAMS}"		read -a BITCOIND_PARAMS <<< "${BITCOIND_PARAMS}"

		BITCOIND_PID_FILE=/tmp/bitcoind-exit-on-log.pid
		# Make sure the PID file doesn't already exist for some reason
		rm -f "${BITCOIND_PID_FILE}"
		BITCOIND_PARAMS+=("-pid=${BITCOIND_PID_FILE}")
		BITCOIND_PARAMS+=("-daemon")

START_TIME=$(date +%s)		START_TIME=$(date +%s)
if [ "${#BITCOIND_PARAMS[@]}" -gt 0 ]; then		"${BITCOIND}" "${BITCOIND_PARAMS[@]}"
"${BITCOIND}" "${BITCOIND_PARAMS[@]}" &
else		# The PID file will not exist immediately, so wait for it
"${BITCOIND}" &		PID_WAIT_COUNT=0
		while [ ! -e "${BITCOIND_PID_FILE}" ]; do
		((PID_WAIT_COUNT+=1))
		if [ "${PID_WAIT_COUNT}" -gt 10 ]; then
		echo "Timed out waiting for bitcoind PID file"
		exit 10
fi		fi
BITCOIND_PID=$!		sleep 0.5
		done
		BITCOIND_PID=$(cat "${BITCOIND_PID_FILE}")

# Wait for log checking to finish and kill the daemon		# Wait for log checking to finish and kill the daemon
(		(
# When this subshell finishes, kill bitcoind		# When this subshell finishes, kill bitcoind
log_subshell_cleanup() {		log_subshell_cleanup() {
echo "Cleaning up bitcoin daemon (PID: ${BITCOIND_PID})."		echo "Cleaning up bitcoin daemon (PID: ${BITCOIND_PID})."
kill ${BITCOIND_PID}		kill ${BITCOIND_PID}
}		}
Show All 14 Lines	(
# Optional callback for interacting with bitcoind before it's killed		# Optional callback for interacting with bitcoind before it's killed
if [ -n "${CALLBACK}" ]; then		if [ -n "${CALLBACK}" ]; then
"${CALLBACK}"		"${CALLBACK}"
fi		fi
) &		) &
LOG_PID=$!		LOG_PID=$!

# Wait for bitcoind to exit, whether it exited on its own or the log subshell finished		# Wait for bitcoind to exit, whether it exited on its own or the log subshell finished
wait ${BITCOIND_PID}		set +x
BITCOIND_EXIT_CODE=$?		while [ -e "${BITCOIND_PID_FILE}" ]; do sleep 0.5; done
		set -x

if [ "${BITCOIND_EXIT_CODE}" -ne "0" ]; then		# If the log subshell is still running, then GREP_PATTERN was not found
echo "bitcoind exited unexpectedly with code: ${BITCOIND_EXIT_CODE}"		if [ -e /proc/${LOG_PID} ]; then
exit ${BITCOIND_EXIT_CODE}		echo "bitcoind exited unexpectedly. See '${LOG_FILE}' for details."
		exit 20
fi		fi

# Get the exit code for the log subshell, which should have exited already		# Get the exit code for the log subshell, which should have exited already
		# if GREP_PATTERN was found
wait ${LOG_PID}		wait ${LOG_PID}
LOG_EXIT_CODE=$?		LOG_EXIT_CODE=$?

# The log subshell should only exit with a non-zero code if the callback		# The log subshell should only exit with a non-zero code if the callback
# failed.		# failed.
if [ "${LOG_EXIT_CODE}" -ne "0" ]; then		if [ "${LOG_EXIT_CODE}" -ne "0" ]; then
echo "Log subshell failed with code: ${LOG_EXIT_CODE}"		echo "Log subshell failed with code: ${LOG_EXIT_CODE}"
exit ${LOG_EXIT_CODE}		exit ${LOG_EXIT_CODE}
fi		fi