INIT

supervisor.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+
+trap "echo 'Server stopped by user'; exit 0" SIGINT
+
+MAX_BACKOFF=60
+FAIL_COUNT=0
+PID_FILE="bun.pid"
+PORT=${PORT:-3000}
+ENTRYPOINT="backend/server.ts"
+
+mkdir -p logs
+
+while true; do
+  # Check if previous server PID exists
+  if [ -f "$PID_FILE" ]; then
+    PREV_PID=$(cat "$PID_FILE")
+    if ps -p $PREV_PID > /dev/null 2>&1; then
+      echo "Previous server (PID $PREV_PID) still running. Waiting 2 seconds..."
+      sleep 2
+      continue
+    else
+      # Clean up stale PID file
+      rm "$PID_FILE"
+    fi
+  fi
+
+  echo "Starting Bun server on port $PORT..." | tee -a logs/server.log
+
+  # Start Bun in background and store PID
+  bun run $ENTRYPOINT 2>&1 | tee -a logs/server.log &
+  SERVER_PID=$!
+  echo $SERVER_PID > "$PID_FILE"
+
+  # Wait for server to exit
+  wait $SERVER_PID
+  EXIT_CODE=$?
+
+  echo "Server exited with code $EXIT_CODE" | tee -a logs/server.log
+
+  # Remove PID file
+  rm -f "$PID_FILE"
+
+  # Backoff logic
+  FAIL_COUNT=$((FAIL_COUNT + 1))
+  BACKOFF=$((2 ** FAIL_COUNT))
+  [ $BACKOFF -gt $MAX_BACKOFF ] && BACKOFF=$MAX_BACKOFF
+  JITTER=$((RANDOM % 4))
+  SLEEP_TIME=$((BACKOFF + JITTER))
+
+  echo "Restarting in $SLEEP_TIME seconds (failures: $FAIL_COUNT)..." | tee -a logs/server.log
+  sleep $SLEEP_TIME
+
+  if [ $FAIL_COUNT -ge 10 ]; then
+    echo "High number of failures — cooling down for 5 minutes..." | tee -a logs/server.log
+    sleep 300
+    FAIL_COUNT=0
+  fi
+
+done