d14accad07
Reviewers: buda Reviewed By: buda Subscribers: pullbot Differential Revision: https://phabricator.memgraph.io/D532
72 lines
1.9 KiB
Python
72 lines
1.9 KiB
Python
"""
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Generates a random graph with some configurable statistics.
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"""
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from random import randint
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def rint(upper_bound_exclusive):
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return randint(0, upper_bound_exclusive - 1)
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VERTEX_COUNT = 100
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EDGE_COUNT = VERTEX_COUNT * 3
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# numbers of *different* labels, edge types and properties
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LABEL_COUNT = 10
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EDGE_TYPE_COUNT = 10
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MAX_LABELS = 3 # maximum number of labels in a vertex
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MAX_PROPS = 4 # maximum number of properties in a vertex/edge
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# some consts used in mutiple files
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LABEL_PREFIX = "Label"
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PROP_PREFIX = "Property"
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ID = "id"
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def labels():
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return "".join(":%s%d" % (LABEL_PREFIX, rint(LABEL_COUNT))
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for _ in range(randint(1, MAX_LABELS - 1)))
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def properties(id):
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""" Generates a properties string with [0, MAX_PROPS) properties.
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Note that if PropX is generated, then all the PropY where Y < X
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are generated. Thus most labels have Prop0, and least have PropMAX_PROPS.
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"""
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return "{%s: %d, %s}" % (ID, id, ",".join(
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["%s%d: %d" % (PROP_PREFIX, prop_ind, rint(100))
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for prop_ind in range(randint(1, MAX_PROPS - 1))]))
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def vertex(vertex_index):
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return "(%s %s)" % (labels(), properties(vertex_index))
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def edge(edge_index):
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return "[:EdgeType%d %s]" % (rint(EDGE_TYPE_COUNT), properties(edge_index))
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def main():
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# we batch CREATEs because to speed creation up
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BATCH_SIZE = 50
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# create vertices
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for vertex_index in range(VERTEX_COUNT):
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print("CREATE %s" % vertex(vertex_index))
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if vertex_index != 0 and vertex_index % BATCH_SIZE == 0:
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print(";")
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# create edges
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for edge_index in range(EDGE_COUNT):
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print("MERGE (a%d {%s: %d})-%s->(b%d {%s: %d})" % (
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edge_index, ID, randint(0, VERTEX_COUNT - 1),
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edge(edge_index),
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edge_index, ID, randint(0, VERTEX_COUNT - 1)))
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if edge_index != 0 and edge_index % BATCH_SIZE == 0:
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print(";")
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if __name__ == "__main__":
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main()
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