mirror of
https://github.com/trustgraph-ai/trustgraph.git
synced 2026-04-25 08:26:21 +02:00
180 lines
4.2 KiB
Python
Executable file
180 lines
4.2 KiB
Python
Executable file
#!/usr/bin/env python3
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"""
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Loads Graph embeddings into TrustGraph processing.
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"""
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import pulsar
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from pulsar.schema import JsonSchema
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from trustgraph.schema import Triples, Triple, Value, Metadata
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from trustgraph.schema import triples_store_queue
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import argparse
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import os
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import time
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import pyarrow as pa
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import pyarrow.parquet as pq
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from trustgraph.log_level import LogLevel
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class Loader:
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def __init__(
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self,
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pulsar_host,
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output_queue,
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log_level,
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file,
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user,
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collection,
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):
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self.client = pulsar.Client(
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pulsar_host,
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logger=pulsar.ConsoleLogger(log_level.to_pulsar())
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)
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self.producer = self.client.create_producer(
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topic=output_queue,
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schema=JsonSchema(Triples),
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chunking_enabled=True,
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)
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self.file = file
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self.user = user
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self.collection = collection
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def run(self):
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try:
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path = self.file
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print("Reading file...")
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table = pq.read_table(path)
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print("Loaded.")
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names = set(table.column_names)
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if "s" not in names:
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print("No 's' column")
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if "p" not in names:
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print("No 'p' column")
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if "o" not in names:
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print("No 'o' column")
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sc = table.column("s")
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pc = table.column("p")
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oc = table.column("o")
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for s, p, o in zip(sc, pc, oc):
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r = Triples(
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metadata=Metadata(
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metadata=[],
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user=self.user,
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collection=self.collection,
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),
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triples=[
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Triple(
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s=Value(
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value=s.as_py(), is_uri=True
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),
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p=Value(
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value=p.as_py(), is_uri=True
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),
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o=Value(
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value=o.as_py(),
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is_uri=o.as_py().startswith("https:")
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)
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)
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]
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)
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self.producer.send(r)
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except Exception as e:
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print(e, flush=True)
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def __del__(self):
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self.client.close()
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def main():
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parser = argparse.ArgumentParser(
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prog='loader',
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description=__doc__,
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)
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default_pulsar_host = os.getenv("PULSAR_HOST", 'pulsar://localhost:6650')
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default_output_queue = triples_store_queue
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default_user = 'trustgraph'
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default_collection = 'default'
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parser.add_argument(
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'-p', '--pulsar-host',
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default=default_pulsar_host,
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help=f'Pulsar host (default: {default_pulsar_host})',
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)
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parser.add_argument(
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'-o', '--output-queue',
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default=default_output_queue,
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help=f'Output queue (default: {default_output_queue})'
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)
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parser.add_argument(
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'-u', '--user',
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default=default_user,
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help=f'User ID (default: {default_user})'
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)
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parser.add_argument(
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'-c', '--collection',
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default=default_collection,
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help=f'Collection ID (default: {default_collection})'
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)
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parser.add_argument(
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'-l', '--log-level',
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type=LogLevel,
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default=LogLevel.ERROR,
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choices=list(LogLevel),
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help=f'Output queue (default: info)'
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)
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parser.add_argument(
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'-f', '--file',
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required=True,
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help=f'File to load'
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)
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args = parser.parse_args()
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while True:
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try:
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p = Loader(
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pulsar_host=args.pulsar_host,
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output_queue=args.output_queue,
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log_level=args.log_level,
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file=args.file,
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user=args.user,
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collection=args.collection,
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)
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p.run()
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print("File loaded.")
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break
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except Exception as e:
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print("Exception:", e, flush=True)
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print("Will retry...", flush=True)
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time.sleep(10)
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main()
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