mirror of
https://github.com/trustgraph-ai/trustgraph.git
synced 2026-07-17 17:21:02 +02:00
413 lines
11 KiB
Python
Executable file
413 lines
11 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
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from trustgraph.schema import Value, Metadata, Triple
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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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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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ORGANIZATION = 'https://schema.org/Organization'
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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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def hash(data):
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if isinstance(data, str):
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data = data.encode("utf-8")
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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 curi(pref, id):
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return f"https://trustgraph.ai/{pref}/{id}"
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class DigitalDocument:
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def __init__(
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self, id, name=None, description=None, copyright_notice=None,
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copyright_holder=None, copyright_year=None, license=None,
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identifier=None,
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publication=None, url=None, keywords=[]
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):
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self.id = id
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self.name = name
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self.description = description
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self.copyright_notice = copyright_notice
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self.copyright_holder = copyright_holder
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self.copyright_year = copyright_year
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self.license = license
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self.publication = publication
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self.url = url
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self.identifier = identifier
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self.keywords = keywords
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def emit(self, emit):
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emit(Triple(Value(self.id), Value(IS_A), Value(DIGITAL_DOCUMENT)))
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if self.name:
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emit(Triple(Value(self.id), Value(LABEL), Value(self.name)))
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emit(Triple(Value(self.id), Value(NAME), Value(self.name)))
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if self.identifier:
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emit(Triple(Value(id), Value(IDENTIFIER), Value(self.identifier)))
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if self.description:
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emit(Triple(
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Value(self.id), Value(DESCRIPTION), Value(self.description)
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))
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if self.copyright_notice:
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emit(Triple(
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Value(self.id), Value(COPYRIGHT_NOTICE),
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Value(self.copyright_notice)
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))
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if self.copyright_holder:
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emit(Triple(
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Value(self.id), Value(COPYRIGHT_HOLDER),
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Value(self.copyright_holder)
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))
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if self.copyright_year:
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emit(Triple(
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Value(self.id), Value(COPYRIGHT_YEAR),
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Value(self.copyright_year)
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))
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if self.license:
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emit(Triple(
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Value(self.id), Value(LICENSE), Value(self.license)
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))
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if self.keywords:
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for k in self.keywords:
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emit(Triple(Value(self.id), Value(KEYWORD), Value(k)))
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if self.publication:
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emit(Triple(
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Value(self.id), Value(PUBLICATION, Value(self.publication.id))
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))
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self.publication.emit(emit)
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if self.url:
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emit(Triple(Value(self.id), Value(URL), Value(self.url)))
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class PublicationEvent:
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def __init__(
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self, id, organization=None, name=None, description=None,
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start_date=None, end_date=None,
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):
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self.id = id
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self.organization = organization
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self.name = name
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self.description = description
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self.start_date = start_date
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self.end_date = end_date
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def emit(self, emit):
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emit(Triple(Value(self.id), Value(IS_A), Value(PUBLICATION_EVENT)))
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if self.name:
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emit(Triple(Value(self.id), Value(LABEL), Value(self.name)))
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emit(Triple(Value(self.id), Value(NAME), Value(self.name)))
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if self.description:
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emit(Triple(
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Value(self.id), Value(DESCRIPTION), Value(self.description)
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))
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if self.organization:
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emit(Triple(
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Value(self.id), Value(PUBLISHED_BY),
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Value(self.organization.id)
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))
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self.organization.emit(emit)
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if self.start_date:
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emit(Triple(
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Value(self.id), Value(START_DATE), Value(self.start_date)
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))
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if self.end_date:
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emit(Triple(Value(self.id), Value(END_DATE), Value(self.end_date)))
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class Organization:
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def __init__(self, id, name=None, description=None):
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self.id = id
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self.name = name
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self.description = description
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def emit(self, emit):
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emit(Triple(Value(self.id), Value(IS_A), Value(ORGANIZATION)))
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if self.name:
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emit(Triple(Value(self.id), Value(LABEL), Value(self.name)))
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emit(Triple(Value(self.id), Value(NAME), Value(self.name)))
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if self.description:
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emit(Triple(
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Value(self.id), Value(DESCRIPTION), Value(self.description)
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))
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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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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 = hash(data)
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id = curi("doc", id)
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triples = []
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def emit(t):
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triples.append(t)
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self.metadata.id = id
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self.metadata.emit(emit)
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r = Document(
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metadata=Metadata(
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id=id,
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metadata = triples,
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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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document = DigitalDocument(
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id,
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name=args.name,
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description=args.description,
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copyright_notice=args.copyright_notice,
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copyright_holder=args.copyright_holder,
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copyright_year=args.copyright_year,
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license=args.license,
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url=args.url,
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keywords=args.keyword,
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)
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if args.publication_organization:
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org = Organization(
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id=curi("org", hash(args.publication_organization)),
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name=args.publication_organization,
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)
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document.publication = PublicationEvent(
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id = curi("pubev", str(uuid.uuid4())),
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organization=org,
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description=args.publication_description,
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start_date=args.publication_date,
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end_date=args.publication_date,
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)
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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=document,
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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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