Added get_default_pid_file utility method.

platypush/__init__.py

@@ -5,12 +5,13 @@ Platypush
 .. license: MIT
 """
 
-from .app import Application, main
+from .app import Application
 from .config import Config
 from .context import get_backend, get_bus, get_plugin
 from .message.event import Event
 from .message.request import Request
 from .message.response import Response
+from .runner import main
 
 
 __author__ = 'Fabio Manganiello <fabio@manganiello.tech>'

platypush/cli.py

@@ -2,6 +2,7 @@ import argparse
 from typing import Sequence
 
 from platypush.bus.redis import RedisBus
+from platypush.utils import get_default_pid_file
 
 
 def parse_cmdline(args: Sequence[str]) -> argparse.Namespace:
@@ -61,10 +62,10 @@ def parse_cmdline(args: Sequence[str]) -> argparse.Namespace:
         '-P',
         dest='pidfile',
         required=False,
-        default=None,
+        default=get_default_pid_file(),
         help="File where platypush will "
         + "store its PID, useful if you're planning to "
-        + "integrate it in a service",
+        + f"integrate it in a service (default: {get_default_pid_file()})",
     )
 
     parser.add_argument(

platypush/utils/__init__.py

@@ -14,6 +14,7 @@ import socket
 import ssl
 import urllib.request
 from threading import Lock as TLock
+from tempfile import gettempdir
 from typing import Generator, Optional, Tuple, Union
 
 from dateutil import parser, tz
@@ -625,4 +626,11 @@ def get_lock(
             lock.release()
 
 
+def get_default_pid_file() -> str:
+    """
+    Get the default PID file path.
+    """
+    return os.path.join(gettempdir(), 'platypush.pid')
+
+
 # vim:sw=4:ts=4:et: