mirror of
https://github.com/trustgraph-ai/trustgraph.git
synced 2026-04-28 09:56:22 +02:00
164 lines
4 KiB
Python
Executable file
164 lines
4 KiB
Python
Executable file
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"""
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Simple decoder, accepts text documents on input, outputs chunks from the
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as text as separate output objects.
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"""
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import pulsar
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from pulsar.schema import JsonSchema
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import tempfile
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import base64
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import os
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import argparse
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from langchain_text_splitters import RecursiveCharacterTextSplitter
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import time
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from ... schema import TextDocument, Chunk, Source
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from ... log_level import LogLevel
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class Processor:
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def __init__(
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self,
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pulsar_host,
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input_queue,
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output_queue,
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subscriber,
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log_level,
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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.consumer = self.client.subscribe(
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input_queue, subscriber,
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schema=JsonSchema(TextDocument),
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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(Chunk),
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)
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self.text_splitter = RecursiveCharacterTextSplitter(
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chunk_size=1000,
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chunk_overlap=20,
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length_function=len,
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is_separator_regex=False,
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)
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def run(self):
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while True:
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msg = self.consumer.receive()
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try:
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v = msg.value()
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print(f"Chunking {v.source.id}...", flush=True)
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texts = self.text_splitter.create_documents(
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[v.text.decode("utf-8")]
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)
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for ix, chunk in enumerate(texts):
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id = v.source.id + "-c" + str(ix)
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r = Chunk(
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source=Source(
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source=v.source.source,
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id=id,
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title=v.source.title
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),
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chunk=chunk.page_content.encode("utf-8"),
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)
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self.producer.send(r)
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# Acknowledge successful processing of the message
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self.consumer.acknowledge(msg)
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print("Done.", flush=True)
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except Exception as e:
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print(e, flush=True)
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# Message failed to be processed
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self.consumer.negative_acknowledge(msg)
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def __del__(self):
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self.client.close()
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def run():
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parser = argparse.ArgumentParser(
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prog='pdf-decoder',
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description=__doc__,
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)
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default_pulsar_host = os.getenv("PULSAR_HOST", 'pulsar://pulsar:6650')
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default_input_queue = 'text-doc-load'
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default_output_queue = 'chunk-load'
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default_subscriber = 'chunker-recursive'
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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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'-i', '--input-queue',
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default=default_input_queue,
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help=f'Input queue (default: {default_input_queue})'
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)
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parser.add_argument(
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'-s', '--subscriber',
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default=default_subscriber,
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help=f'Queue subscriber name (default: {default_subscriber})'
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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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'-l', '--log-level',
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type=LogLevel,
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default=LogLevel.INFO,
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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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args = parser.parse_args()
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while True:
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try:
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p = Processor(
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pulsar_host=args.pulsar_host,
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input_queue=args.input_queue,
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output_queue=args.output_queue,
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subscriber=args.subscriber,
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log_level=args.log_level,
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)
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p.run()
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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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