Refactor codebase

power.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+set -eu
+
+# Configure QEMU for graceful shutdown
+
+QEMU_MONPORT=7100
+QEMU_POWERDOWN_TIMEOUT=30
+
+_graceful_shutdown() {
+
+  local COUNT=0
+  local QEMU_MONPORT="${QEMU_MONPORT:-7100}"
+  local QEMU_POWERDOWN_TIMEOUT="${QEMU_POWERDOWN_TIMEOUT:-120}"
+
+  set +e
+  echo "Trying to shutdown gracefully.."
+
+  # Send a NMI interrupt which will be detected by the agent
+  # echo 'nmi' | nc -q 1 localhost "${QEMU_MONPORT}">/dev/null 2>&1
+
+  echo 'system_powerdown' | nc -q 1 localhost "${QEMU_MONPORT}">/dev/null 2>&1
+  echo ""
+
+  while echo 'info version'|nc -q 1 localhost "${QEMU_MONPORT:-7100}">/dev/null 2>&1 && [ "${COUNT}" -lt "${QEMU_POWERDOWN_TIMEOUT}" ]; do
+    (( COUNT++ )) || true
+    echo "Shutting down, waiting... (${COUNT}/${QEMU_POWERDOWN_TIMEOUT})"
+    sleep 1
+  done
+
+  if echo 'info version'|nc -q 1 localhost "${QEMU_MONPORT:-7100}">/dev/null 2>&1; then
+    echo "Killing the VM.."
+    echo 'quit' | nc -q 1 localhost "${QEMU_MONPORT}">/dev/null 2>&1 || true
+  fi
+
+  echo "Exiting..."
+}
+
+trap _graceful_shutdown SIGINT SIGTERM SIGHUP
+
+KVM_MON_OPTS="-monitor telnet:localhost:"${QEMU_MONPORT:-7100}",server,nowait,nodelay"