# Path: brewery/nodes/base.py
# def node_dictionary():
#     """Return a dictionary containing node name as key and node class as
#     value. This will be depreciated soon in favour of
#     :func:`node_catalogue()`"""
# 
#     classes = node_subclasses(Node)
#     dictionary = {}
# 
#     for c in classes:
#         try:
#             name = c.identifier()
#             dictionary[name] = c
#         except AttributeError:
#             # If node does not provide identifier, we consider it to be
#             # private or abstract class
#             pass
# 
#     return dictionary
# 
# class TargetNode(Node):
#     """Abstract class for all target nodes
# 
#     .. abstract_node
# 
#     """
#     def __init__(self):
#         super(TargetNode, self).__init__()
#         self.fields = None
# 
#     @property
#     def output_fields(self):
#         raise RuntimeError("Output fields asked from a target object.")
# 
#     def add_output(self, pipe):
#         raise RuntimeError("Should not add output pipe to a target node")
# 
# class NodeFinished(Exception):
#     """Exception raised when node has no active outputs - each output node signalised that it
#     requires no more data."""
#     pass
# 
# Path: brewery/utils.py
# def get_logger():
#     """Get brewery default logger"""
#     global logger
#     
#     if logger:
#         return logger
#     else:
#         return create_logger()


import threading
import sys
from brewery.nodes.base import node_dictionary, TargetNode, NodeFinished
from brewery.utils import get_logger
from brewery.nodes import *
from brewery.common import *
from .graph import *

    def kill_threads(self):
        self.logger.info("killing threads")

    def _finalize(self):
        self.logger.info("finalizing nodes")

        # FIXME: encapsulate finalization in exception handler, collect exceptions
        for node in self.sorted_nodes():
            self.logger.debug("finalizing node %s" % node_label(node))
            node.finalize()

def node_label(node):
    """Debug label for a node: node identifier with python object id."""
    return "%s(%s)" % (node.identifier() or str(type(node)), id(node))

class _StreamNodeThread(threading.Thread):
    def __init__(self, node):
        """Creates a stream node thread.

        :Attributes:
            * `node`: a Node object
            * `exception`: attribute will contain exception if one occurs during run()
            * `traceback`: will contain traceback if exception occurs

        """
        super(_StreamNodeThread, self).__init__()
        self.node = node
        self.exception = None
        self.traceback = None

# Path: brewery/nodes/base.py
# def node_dictionary():
#     """Return a dictionary containing node name as key and node class as
#     value. This will be depreciated soon in favour of
#     :func:`node_catalogue()`"""
# 
#     classes = node_subclasses(Node)
#     dictionary = {}
# 
#     for c in classes:
#         try:
#             name = c.identifier()
#             dictionary[name] = c
#         except AttributeError:
#             # If node does not provide identifier, we consider it to be
#             # private or abstract class
#             pass
# 
#     return dictionary
# 
# class TargetNode(Node):
#     """Abstract class for all target nodes
# 
#     .. abstract_node
# 
#     """
#     def __init__(self):
#         super(TargetNode, self).__init__()
#         self.fields = None
# 
#     @property
#     def output_fields(self):
#         raise RuntimeError("Output fields asked from a target object.")
# 
#     def add_output(self, pipe):
#         raise RuntimeError("Should not add output pipe to a target node")
# 
# class NodeFinished(Exception):
#     """Exception raised when node has no active outputs - each output node signalised that it
#     requires no more data."""
#     pass
# 
# Path: brewery/utils.py
# def get_logger():
#     """Get brewery default logger"""
#     global logger
#     
#     if logger:
#         return logger
#     else:
#         return create_logger()


# Path: brewery/streams.py
import threading
import sys
from brewery.nodes.base import node_dictionary, TargetNode, NodeFinished
from brewery.utils import get_logger
from brewery.nodes import *
from brewery.common import *
from .graph import *


    def kill_threads(self):
        self.logger.info("killing threads")

    def _finalize(self):
        self.logger.info("finalizing nodes")

        # FIXME: encapsulate finalization in exception handler, collect exceptions
        for node in self.sorted_nodes():
            self.logger.debug("finalizing node %s" % node_label(node))
            node.finalize()

def node_label(node):
    """Debug label for a node: node identifier with python object id."""
    return "%s(%s)" % (node.identifier() or str(type(node)), id(node))

class _StreamNodeThread(threading.Thread):
    def __init__(self, node):
        """Creates a stream node thread.

        :Attributes:
            * `node`: a Node object
            * `exception`: attribute will contain exception if one occurs during run()
            * `traceback`: will contain traceback if exception occurs

        """
        super(_StreamNodeThread, self).__init__()
        self.node = node
        self.exception = None
        self.traceback = None

        self.logger = get_logger()