mirror of
https://github.com/trustgraph-ai/trustgraph.git
synced 2026-07-17 01:01:03 +02:00
323 lines
7.8 KiB
Python
Executable file
323 lines
7.8 KiB
Python
Executable file
#!/usr/bin/env python3
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"""
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Loads a PDF document 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 Document, document_ingest_queue, Metadata
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import base64
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import hashlib
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import argparse
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import os
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import time
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import uuid
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from trustgraph.log_level import LogLevel
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default_user = 'trustgraph'
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default_collection = 'default'
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class MetadataSource:
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def __init__(self, args):
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self.source = args
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def id_hash(self, data):
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# Create a SHA256 hash from the data
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id = hashlib.sha256(data).hexdigest()
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# Convert into a UUID, 64-byte hash becomes 32-byte UUID
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id = str(uuid.UUID(id[::2]))
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return id
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def add(self, id, add):
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source = self.source
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add(id, IS_A, DIGITAL_DOCUMENT)
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if source.name:
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add(id, LABEL, source.name)
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add(id, NAME, source.name)
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if source.description:
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add(id, DESCRIPTION, source.description)
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if source.copyright_notice:
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add(id, COPYRIGHT_NOTICE, source.copyright_notice)
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if source.copyright_holder:
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add(id, COPYRIGHT_HOLDER, source.copyright_holder)
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if source.copyright_year:
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add(id, COPYRIGHT_YEAR, source.copyright_year)
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if source.license:
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add(id, LICENSE, source.license)
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if source.publication_organization:
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pub_id = self.id_hash(
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source.publication_organization.encode("utf-8")
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)
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add(id, IS_A, PUBLICATION_EVENT)
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add(id, PUBLICATION, pub_id)
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if source.publication_organization:
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add(pub_id, PUBLISHED_BY,
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source.publication_organization)
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if source.publication_description:
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add(pub_id, DESCRIPTION, source.publication_description)
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if source.publication_date:
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add(pub_id, START_DATE, source.publication_date)
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if source.publication_date:
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add(pub_id, END_DATE, source.publication_date)
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if source.url:
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add(id, URL, source.url)
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if source.identifier:
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add(id, IDENTIFIER, source.identifier)
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if source.keyword:
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for k in source.keyword:
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add(id, KEYWORD, k)
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IS_A = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type'
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LABEL = 'http://www.w3.org/2000/01/rdf-schema#label'
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DIGITAL_DOCUMENT = 'https://schema.org/DigitalDocument'
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PUBLICATION_EVENT = 'https://schema.org/PublicationEvent'
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NAME = 'https://schema.org/name'
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DESCRIPTION = 'https://schema.org/description'
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COPYRIGHT_NOTICE = 'https://schema.org/copyrightNotice'
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COPYRIGHT_HOLDER = 'https://schema.org/copyrightHolder'
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COPYRIGHT_YEAR = 'https://schema.org/copyrightYear'
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LICENSE = 'https://schema.org/license'
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PUBLICATION = 'https://schema.org/publication'
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START_DATE = 'https://schema.org/startDate'
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END_DATE = 'https://schema.org/endDate'
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PUBLISHED_BY = 'https://schema.org/publishedBy'
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DATE_PUBLISHED = 'https://schema.org/datePublished'
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PUBLICATION = 'https://schema.org/publication'
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DATE_PUBLISHED = 'https://schema.org/datePublished'
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URL = 'https://schema.org/url'
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IDENTIFIER = 'https://schema.org/identifier'
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KEYWORD = 'https://schema.org/keywords'
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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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user,
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collection,
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log_level,
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metadata,
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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(Document),
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# chunking_enabled=True,
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# )
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class Bunch:
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def close(self):
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print("CLOSE")
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self.client = Bunch()
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self.user = user
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self.collection = collection
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self.metadata = metadata
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def load(self, files):
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for file in files:
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self.load_file(file)
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def load_file(self, file):
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try:
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path = file
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data = open(path, "rb").read()
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# Create a SHA256 hash from the data
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id = hashlib.sha256(data).hexdigest()
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# Convert into a UUID, 64-byte hash becomes 32-byte UUID
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id = str(uuid.UUID(id[::2]))
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triples = []
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def add(s, p, o):
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triples.append((s, p, o))
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self.metadata.add(id, add)
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for t in triples:
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print(t)
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return
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r = Document(
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metadata=Metadata(
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source=path,
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title=path,
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id=id,
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user=self.user,
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collection=self.collection,
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),
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data=base64.b64encode(data),
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)
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self.producer.send(r)
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print(f"{file}: Loaded successfully.")
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except Exception as e:
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print(f"{file}: Failed: {str(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 = document_ingest_queue
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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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'--name', help=f'Document name'
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)
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parser.add_argument(
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'--description', help=f'Document description'
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)
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parser.add_argument(
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'--copyright-notice', help=f'Copyright notice'
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)
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parser.add_argument(
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'--copyright-holder', help=f'Copyright holder'
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)
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parser.add_argument(
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'--copyright-year', help=f'Copyright year'
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)
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parser.add_argument(
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'--license', help=f'Copyright license'
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)
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parser.add_argument(
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'--publication-organization', help=f'Publication organization'
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)
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parser.add_argument(
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'--publication-description', help=f'Publication description'
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)
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parser.add_argument(
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'--publication-date', help=f'Publication date'
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)
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parser.add_argument(
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'--url', help=f'Document URL'
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)
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parser.add_argument(
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'--keyword', nargs='+', help=f'Keyword'
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)
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parser.add_argument(
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'--identifier', '--id', help=f'Document ID'
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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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'files', nargs='+',
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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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user=args.user,
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collection=args.collection,
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log_level=args.log_level,
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metadata=MetadataSource(args),
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)
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p.load(args.files)
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print("All done.")
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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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