hyperstream/tools/asset_splitter/2016-11-24_v0.1.0.py
# The MIT License (MIT) # Copyright (c) 2014-2017 University of Bristol
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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from hyperstream.stream import StreamInstance, StreamMetaInstance
from hyperstream.tool import MultiOutputTool
class AssetSplitter(MultiOutputTool):
def __init__(self, element=None):
"""
Special tool to extract data from the asset channel
:param element: The element to extract
"""
super(AssetSplitter, self).__init__(element=element)
def _execute(self, source, splitting_stream, interval, meta_data_id, output_plate_values):
for timestamp, data in source.window(interval, force_calculation=True):
if self.element in data:
for key, value in data[self.element].items():
yield StreamMetaInstance(StreamInstance(timestamp=timestamp, value=value), (meta_data_id, key))