1 files changed, 119 insertions, 0 deletions
diff --git a/libexec/app-operator-pid b/libexec/app-operator-pid
new file mode 100755
index 0000000..a0ff097
--- /dev/null
+++ b/libexec/app-operator-pid
@@ -0,0 +1,119 @@
+#!/bin/bash -e
+
+#!/bin/bash
+
+set -e
+set -u
+
+APPSH_HOME=$(cd $(dirname "$0")/.. && pwd)
+
+. $APPSH_HOME/lib/common
+# HEADER END
+
+pid_file=$APPSH_APPS/.app/var/pid/$APPSH_NAME-$APPSH_INSTANCE.pid 
+bin=`get_conf $APPSH_APPS $APPSH_NAME $APPSH_INSTANCE app.bin`
+
+cd $APPSH_APPS/$APPSH_NAME/$APPSH_INSTANCE/current
+
+if [ -z "$bin" ]
+then
+  echo "Missing required configuration: app.bin." >&2
+  exit 1
+fi
+
+if [ ! -r "$bin" ]
+then
+  echo "No such file: $bin" >&2
+  exit 1
+fi
+
+chmod +x "$bin"
+
+PID=
+if [ -r $pid_file ]
+then
+  PID="`cat $pid_file`"
+fi
+
+do_status() {
+  if [ -z "$PID" ]
+  then
+    echo stopped
+  else
+    if [ `ps -p "$PID" 2>/dev/null | wc -l` -gt 1 ]
+    then
+      echo running
+    else
+      echo crashed
+    fi
+  fi
+}
+
+method_start() {
+  case `do_status` in
+    running)
+      echo "The application is already running as $PID."
+      exit 1
+      ;;
+  esac
+
+  $bin <&- 1<&- 2<&- &
+
+  PID=$!
+  echo "Application launched as $PID"
+  echo $PID > $pid_file
+
+  return 0
+}
+
+method_stop() {
+  case `do_status` in
+    stopped)
+      echo "The application not running."
+      exit 1
+      ;;
+    crashed)
+      echo "The application crashed. Was running as $PID"
+      # TODO: should this remove the PID file?
+      # That makes it possible to run "stop" to stop "status" from showing "crashed"
+      exit 1
+      ;;
+  esac
+
+  signal="-9"
+  echo -n "Sending kill $signal to $PID, waiting for shutdown"
+  kill $signal $PID
+
+  while [ "`do_status`" == "running" ]
+  do
+    sleep 1
+    echo -n "."
+  done
+
+  echo " OK"
+  rm -f $pid_file
+  return 0
+}
+
+method_status() {
+  case `do_status` in
+    running)
+      echo "$APPSH_NAME/$APPSH_INSTANCE is running as $PID"
+      ;;
+    stopped)
+      echo "$APPSH_NAME/$APPSH_INSTANCE is not running"
+      ;;
+    crashed)
+      echo "$APPSH_NAME/$APPSH_INSTANCE crashed. Was running as $PID"
+      ;;
+  esac
+}
+
+case "$APPSH_METHOD" in
+  start)  method_start ;;
+  stop)   method_stop ;;
+  status) method_status ;;
+  *)      exit 1 ;;
+esac
+
+exit $?