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from django.core.management.base import BaseCommand |
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from ore.models import Graph, Node, Edge, Property |
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from django.contrib.auth.models import User |
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import os.path |
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class Command(BaseCommand): |
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args = '<owner> <textfile>' |
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help = 'Imports a fault tree in European Benchmark Fault Trees Format, see http://bit.ly/UrAxM1' |
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got_root_gate = False |
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nodes = {} |
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graph = None |
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gate_x = 0 |
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event_x = 0 |
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current_id = 0 |
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def client_id(self): |
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self.current_id += 1 |
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return self.current_id |
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def get_id(self, title): |
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if '/' in title: |
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return title[title.find(')') + 1:] |
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else: |
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return filter(lambda x: x.isdigit(), title) |
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def addNode(self, title, lineno): |
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lineno += 10 |
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node_id = self.get_id(title) |
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kind = None |
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if node_id not in self.nodes.keys(): |
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# TODO: Use some reasonable X / Y coordinates |
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self.gate_x += 1 |
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if '*' in title: |
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kind = 'andGate' |
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elif '+' in title: |
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kind = 'orGate' |
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elif '/' in title: |
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kind = 'votingOrGate' |
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elif title.startswith('T'): |
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kind = 'basicEvent' |
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node = Node( |
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graph=self.g, |
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x=self.gate_x, |
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y=lineno, |
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kind=kind, |
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client_id=self.client_id()) |
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self.nodes[node_id] = node |
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node.save() |
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prob = Property(key='title', value=title, node=node) |
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prob.save() |
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if not self.got_root_gate: |
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# connect the very first gate to the top event |
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root_node = Node.objects.get( |
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kind__exact='topEvent', |
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graph=self.graph) |
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edge = Edge( |
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graph=self.graph, |
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source=root_node, |
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target=self.nodes[node_id], |
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client_id=self.client_id()) |
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edge.save() |
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self.got_root_gate = True |
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def handle(self, *args, **options): |
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user_name = 'admin' |
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file_name = 'ore/fixtures/europe-1.txt' |
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argc = len(args) |
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if argc == 1: |
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user_name = args[0] |
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elif argc == 2: |
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user_name = args[0] |
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file_name = args[1] |
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owner = User.objects.get(username__exact=user_name) |
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with open(file_name) as file_handle: |
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self.graph = Graph( |
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name=os.path.split(file_name)[-1], kind='fuzztree', owner=owner) |
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self.graph.save() |
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for lineno, line in enumerate(file_handle): |
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if line.startswith('G'): |
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# Gate node |
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nodes = [ |
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node for node in line.rstrip('\n').split(' ') if node != ''] |
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for node in nodes: |
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self.addNode(node, lineno) |
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# Add edges now, since all nodes in the line are in the DB |
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parent = self.nodes[self.get_id(nodes[0])] |
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for node in nodes[1:]: |
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edge = Edge(graph=self.graph, source=parent, |
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target=self.nodes[ |
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self.get_id(node)], client_id=self.client_id() |
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) |
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edge.save() |
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elif line.startswith('T'): |
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# Basic event node with probability |
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title, probability = line.split(' ')[0:2] |
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self.addNode(title, lineno) |
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node = self.nodes[self.get_id(title)] |
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prop = Property( |
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key='probability', |
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value=str( |
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float(probability)), |
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node=node) |
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prop.save() |
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troeger /
fuzzed
