mirror of
https://github.com/trustgraph-ai/trustgraph.git
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87 lines
2.2 KiB
Python
Executable file
87 lines
2.2 KiB
Python
Executable file
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"""
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Write graphs triples to parquet files in a directory.
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"""
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import pulsar
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import base64
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import os
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import argparse
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import time
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from .... schema import Triples
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from .... schema import triples_store_queue
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from .... base import Consumer
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from . writer import ParquetWriter
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module = ".".join(__name__.split(".")[1:-1])
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default_input_queue = triples_store_queue
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default_subscriber = module
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default_graph_host='localhost'
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default_directory = "."
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default_file_template = "triples-{id}.parquet"
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default_rotation_time = 60
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class Processor(Consumer):
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def __init__(self, **params):
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input_queue = params.get("input_queue", default_input_queue)
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subscriber = params.get("subscriber", default_subscriber)
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directory = params.get("directory", default_directory)
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file_template = params.get("file_template", default_file_template)
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rotation_time = params.get("rotation_time", default_rotation_time)
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super(Processor, self).__init__(
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**params | {
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"input_queue": input_queue,
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"subscriber": subscriber,
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"input_schema": Triples,
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}
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)
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self.writer = ParquetWriter(directory, file_template, rotation_time)
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def __del__(self):
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if hasattr(self, "writer"):
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del self.writer
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def handle(self, msg):
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v = msg.value()
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for t in v.triples:
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self.writer.write(t.s.value, t.p.value, t.o.value)
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@staticmethod
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def add_args(parser):
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Consumer.add_args(
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parser, default_input_queue, default_subscriber,
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)
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parser.add_argument(
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'-d', '--directory',
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default=default_directory,
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help=f'Directory to write to (default: {default_directory})'
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)
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parser.add_argument(
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'-f', '--file-template',
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default=default_file_template,
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help=f'Directory to write to (default: {default_file_template})'
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)
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parser.add_argument(
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'-t', '--rotation-time',
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type=int,
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default=default_rotation_time,
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help=f'Rotation time / seconds (default: {default_rotation_time})'
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)
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def run():
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Processor.start(module, __doc__)
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