Merge "Add env var to dump config graph"
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@ -12,6 +12,7 @@
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import logging
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import networkx as nx
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import os
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from stevedore import extension
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@ -217,10 +218,14 @@ def create_graph(config, default_config):
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"Edge not defined: %s->%s" % (name, edge_to))
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dg.add_edge(name, edge_to)
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# this can be quite helpful debugging but needs pydotplus.
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# run "dotty /tmp/out.dot"
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# XXX: maybe an env var that dumps to a tmpdir or something?
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# nx.nx_pydot.write_dot(dg, '/tmp/graph_dump.dot')
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# this can be quite helpful debugging but needs pydotplus which
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# isn't in requirements. for debugging, do
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# .tox/py27/bin/pip install pydotplus
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# DUMP_CONFIG_GRAPH=1 tox -e py27 -- specific_test
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# dotty /tmp/graph_dump.dot
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# to see helpful output
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if 'DUMP_CONFIG_GRAPH' in os.environ:
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nx.nx_pydot.write_dot(dg, '/tmp/graph_dump.dot')
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# Topological sort (i.e. create a linear array that satisfies
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# dependencies) and return the object list
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