70 lines
1.4 KiB
Bash
Executable File
70 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
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set -eu
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PROJECT_ROOT="${PROJECT_ROOT:-$(pwd)}"
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RUNNER_SCRIPT="${SERVER_COMMAND_RUNNER_SCRIPT:-$PROJECT_ROOT/scripts/run-server-command-runner.mjs}"
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RUNNER_NODE_BIN="${SERVER_COMMAND_RUNNER_NODE_BIN:-node}"
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SUPERVISOR_PID_FILE="${SERVER_COMMAND_RUNNER_SUPERVISOR_PID_FILE:-/tmp/server-command-runner-supervisor.pid}"
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CHILD_PID=""
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STOP_REQUESTED="0"
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RELOAD_REQUESTED="0"
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log() {
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printf '[server-command-runner-supervisor] %s\n' "$*"
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}
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cleanup() {
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rm -f "$SUPERVISOR_PID_FILE"
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}
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start_child() {
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log "starting runner child"
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"$RUNNER_NODE_BIN" "$RUNNER_SCRIPT" &
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CHILD_PID=$!
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}
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request_reload() {
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RELOAD_REQUESTED="1"
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log "reload requested"
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if [ -n "$CHILD_PID" ]; then
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kill -TERM "$CHILD_PID" 2>/dev/null || true
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fi
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}
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request_stop() {
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STOP_REQUESTED="1"
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log "shutdown requested"
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if [ -n "$CHILD_PID" ]; then
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kill -TERM "$CHILD_PID" 2>/dev/null || true
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fi
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}
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trap 'request_reload' HUP
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trap 'request_stop' INT TERM
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trap 'cleanup' EXIT
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printf '%s\n' "$$" >"$SUPERVISOR_PID_FILE"
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cd "$PROJECT_ROOT"
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while :; do
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start_child
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set +e
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wait "$CHILD_PID"
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EXIT_CODE=$?
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set -e
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CHILD_PID=""
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if [ "$STOP_REQUESTED" = "1" ]; then
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exit "$EXIT_CODE"
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fi
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if [ "$RELOAD_REQUESTED" = "1" ]; then
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RELOAD_REQUESTED="0"
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continue
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fi
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log "runner exited unexpectedly with code $EXIT_CODE; restarting in 2 seconds"
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sleep 2
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done
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