176d0a920e
This commit adds -T aka --format option to state graph tool that can be used to specify output format. Supported values are 'dot', 'svg', 'svgz' and 'png'. Change-Id: I27a74b582726da24a1b05d4ffb72bde860fff417
82 lines
2.4 KiB
Python
82 lines
2.4 KiB
Python
#!/usr/bin/env python
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import os
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import sys
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top_dir = os.path.abspath(os.path.join(os.path.dirname(__file__),
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os.pardir))
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sys.path.insert(0, top_dir)
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import optparse
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import subprocess
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import tempfile
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import networkx as nx
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from taskflow import states
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from taskflow.utils import graph_utils as gu
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def mini_exec(cmd, ok_codes=(0,)):
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stdout = subprocess.PIPE
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stderr = subprocess.PIPE
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proc = subprocess.Popen(cmd, stdout=stdout, stderr=stderr, stdin=None)
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(stdout, stderr) = proc.communicate()
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rc = proc.returncode
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if rc not in ok_codes:
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raise RuntimeError("Could not run %s [%s]\nStderr: %s"
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% (cmd, rc, stderr))
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return (stdout, stderr)
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def make_svg(graph, output_filename, output_format):
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# NOTE(harlowja): requires pydot!
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gdot = gu.export_graph_to_dot(graph)
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if output_format == 'dot':
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output = gdot
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elif output_format in ('svg', 'svgz', 'png'):
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with tempfile.NamedTemporaryFile(suffix=".dot") as fh:
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fh.write(gdot)
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fh.flush()
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cmd = ['dot', '-T%s' % output_format, fh.name]
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output, _stderr = mini_exec(cmd)
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else:
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raise ValueError('Unknown format: %s' % output_filename)
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with open(output_filename, "wb") as fh:
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fh.write(output)
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def main():
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parser = optparse.OptionParser()
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parser.add_option("-f", "--file", dest="filename",
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help="write svg to FILE", metavar="FILE")
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parser.add_option("-t", "--tasks", dest="tasks",
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action='store_true',
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help="use task state transitions",
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default=False)
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parser.add_option("-T", "--format", dest="format",
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help="output in given format",
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default='svg')
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(options, args) = parser.parse_args()
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if options.filename is None:
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options.filename = 'states.%s' % options.format
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g = nx.DiGraph(name="State transitions")
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if not options.tasks:
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source = states._ALLOWED_FLOW_TRANSITIONS
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else:
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source = states._ALLOWED_TASK_TRANSITIONS
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for (u, v) in source:
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if not g.has_node(u):
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g.add_node(u)
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if not g.has_node(v):
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g.add_node(v)
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g.add_edge(u, v)
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make_svg(g, options.filename, options.format)
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print("Created %s at '%s'" % (options.format, options.filename))
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if __name__ == '__main__':
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main()
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