# Path: pypeman/channels.py
# class Dropped(Exception):
#     """ Used to stop process as message is processed. Default success should be returned.
#     """
# 
# Path: pypeman/persistence.py
# async def get_backend(loop):
#     """
#     Return the configured backend instance.
# 
#     :param loop: Asyncio loop to use. Passed backend instance.
#     """
#     global _backend
#     if not _backend:
#         # Load backend on first use
#         if not settings.PERSISTENCE_BACKEND:
#             raise Exception("Persistence backend not configured.")
# 
#         module, _, class_ = settings.PERSISTENCE_BACKEND.rpartition('.')
#         loaded_module = importlib.import_module(module)
#         _backend = getattr(loaded_module, class_)(loop=loop, **settings.PERSISTENCE_CONFIG)
# 
#         await _backend.start()
# 
#     return _backend
# 
# Path: pypeman/helpers/lazyload.py
# def load_class(module, class_, deps):
# def load(selfmodname, module, class_, dep=None):
#     def init(*args, **kwargs):
#     def __init__(self, wrapped):
#     def add_lazy(self, module, name, deps):
#     def __getattr__(self, name):
#         C = load_class(module, class_, dep)
# class Wrapper(object):


import asyncio
import base64
import json
import logging
import os
import smtplib
import types
import warnings
from datetime import datetime
from collections import OrderedDict
from fnmatch import fnmatch
from email.mime.text import MIMEText
from urllib import parse
from concurrent.futures import ThreadPoolExecutor
from pypeman.message import Message
from pypeman.channels import Dropped
from pypeman.persistence import get_backend
from pypeman.helpers import lazyload  # noqa: E402







logger = logging.getLogger(__name__)
loop = asyncio.get_event_loop()

# All declared nodes registered here
all_nodes = []
node_by_name = {}

# Can be redefined
default_thread_pool = ThreadPoolExecutor(max_workers=3)


# Path: pypeman/channels.py
# class Dropped(Exception):
#     """ Used to stop process as message is processed. Default success should be returned.
#     """
# 
# Path: pypeman/persistence.py
# async def get_backend(loop):
#     """
#     Return the configured backend instance.
# 
#     :param loop: Asyncio loop to use. Passed backend instance.
#     """
#     global _backend
#     if not _backend:
#         # Load backend on first use
#         if not settings.PERSISTENCE_BACKEND:
#             raise Exception("Persistence backend not configured.")
# 
#         module, _, class_ = settings.PERSISTENCE_BACKEND.rpartition('.')
#         loaded_module = importlib.import_module(module)
#         _backend = getattr(loaded_module, class_)(loop=loop, **settings.PERSISTENCE_CONFIG)
# 
#         await _backend.start()
# 
#     return _backend
# 
# Path: pypeman/helpers/lazyload.py
# def load_class(module, class_, deps):
# def load(selfmodname, module, class_, dep=None):
#     def init(*args, **kwargs):
#     def __init__(self, wrapped):
#     def add_lazy(self, module, name, deps):
#     def __getattr__(self, name):
#         C = load_class(module, class_, dep)
# class Wrapper(object):


# Path: pypeman/nodes.py
import asyncio
import base64
import json
import logging
import os
import smtplib
import types
import warnings
from datetime import datetime
from collections import OrderedDict
from fnmatch import fnmatch
from email.mime.text import MIMEText
from urllib import parse
from concurrent.futures import ThreadPoolExecutor
from pypeman.message import Message
from pypeman.channels import Dropped
from pypeman.persistence import get_backend
from pypeman.helpers import lazyload  # noqa: E402








logger = logging.getLogger(__name__)
loop = asyncio.get_event_loop()

# All declared nodes registered here
all_nodes = []
node_by_name = {}

# Can be redefined
default_thread_pool = ThreadPoolExecutor(max_workers=3)


SENTINEL = object()