#!/usr/bin/env python3
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# Simple graph query utility
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# useful for getting answers from .dot files produced by bitbake -g
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#
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# Written by: Paul Eggleton <paul.eggleton@linux.intel.com>
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#
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# Copyright 2013 Intel Corporation
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#
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# SPDX-License-Identifier: GPL-2.0-only
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#
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import sys
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import os
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import argparse
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scripts_lib_path = os.path.abspath(os.path.join(os.path.dirname(os.path.realpath(__file__)), '..', 'lib'))
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sys.path.insert(0, scripts_lib_path)
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import argparse_oe
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def get_path_networkx(dotfile, fromnode, tonode):
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try:
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import networkx
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except ImportError:
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print('ERROR: Please install the networkx python module')
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sys.exit(1)
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graph = networkx.DiGraph(networkx.nx_pydot.read_dot(dotfile))
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def node_missing(node):
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import difflib
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close_matches = difflib.get_close_matches(node, graph.nodes(), cutoff=0.7)
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if close_matches:
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print('ERROR: no node "%s" in graph. Close matches:\n %s' % (node, '\n '.join(close_matches)))
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sys.exit(1)
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if not fromnode in graph:
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node_missing(fromnode)
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if not tonode in graph:
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node_missing(tonode)
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return networkx.all_simple_paths(graph, source=fromnode, target=tonode)
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def find_paths(args):
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path = None
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for path in get_path_networkx(args.dotfile, args.fromnode, args.tonode):
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print(" -> ".join(map(str, path)))
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if not path:
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print("ERROR: no path from %s to %s in graph" % (args.fromnode, args.tonode))
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return 1
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def filter_graph(args):
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import fnmatch
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exclude_tasks = []
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if args.exclude_tasks:
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for task in args.exclude_tasks.split(','):
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if not task.startswith('do_'):
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task = 'do_%s' % task
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exclude_tasks.append(task)
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def checkref(strval):
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strval = strval.strip().strip('"')
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target, taskname = strval.rsplit('.', 1)
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if exclude_tasks:
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for extask in exclude_tasks:
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if fnmatch.fnmatch(taskname, extask):
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return False
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if strval in args.ref or target in args.ref:
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return True
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return False
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with open(args.infile, 'r') as f:
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for line in f:
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line = line.rstrip()
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if line.startswith(('digraph', '}')):
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print(line)
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elif '->' in line:
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linesplit = line.split('->')
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if checkref(linesplit[0]) and checkref(linesplit[1]):
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print(line)
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elif (not args.no_nodes) and checkref(line.split()[0]):
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print(line)
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def main():
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parser = argparse_oe.ArgumentParser(description='Small utility for working with .dot graph files')
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subparsers = parser.add_subparsers(title='subcommands', metavar='<subcommand>')
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subparsers.required = True
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parser_find_paths = subparsers.add_parser('find-paths',
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help='Find all of the paths between two nodes in a dot graph',
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description='Finds all of the paths between two nodes in a dot graph')
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parser_find_paths.add_argument('dotfile', help='.dot graph to search in')
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parser_find_paths.add_argument('fromnode', help='starting node name')
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parser_find_paths.add_argument('tonode', help='ending node name')
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parser_find_paths.set_defaults(func=find_paths)
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parser_filter = subparsers.add_parser('filter',
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help='Pare down a task graph to contain only the specified references',
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description='Pares down a task-depends.dot graph produced by bitbake -g to contain only the specified references')
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parser_filter.add_argument('infile', help='Input file')
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parser_filter.add_argument('ref', nargs='+', help='Reference to include (either recipe/target name or full target.taskname specification)')
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parser_filter.add_argument('-n', '--no-nodes', action='store_true', help='Skip node formatting lines')
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parser_filter.add_argument('-x', '--exclude-tasks', help='Comma-separated list of tasks to exclude (do_ prefix optional, wildcards allowed)')
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parser_filter.set_defaults(func=filter_graph)
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args = parser.parse_args()
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ret = args.func(args)
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return ret
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if __name__ == "__main__":
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ret = main()
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sys.exit(ret)
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