Feature/doc metadata labels (#130)

* Add schema load util

* Added a sample schema turtle file will be useful for future testing and
tutorials.

* Fixed graph label metadata confusion, was created incorrect subjectOf
edges.

schema.ttl

@@ -0,0 +1,32 @@
+@prefix ns1: <http://trustgraph.ai/e/> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix schema: <https://schema.org/> .
+@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
+
+schema:subjectOf rdfs:label "subject of" .
+skos:definition rdfs:label "definition" .
+
+rdf:type rdfs:label "type" .
+
+schema:DigitalDocument rdfs:label "digital document" .
+schema:Organization rdfs:label "organization" .
+schema:PublicationEvent rdfs:label "publication event" .
+
+schema:copyrightNotice rdfs:label "copyright notice" .
+schema:copyrightHolder rdfs:label "copyright holder" .
+schema:copyrightYear rdfs:label "copyright year" .
+schema:license rdfs:label "license" .
+schema:publication rdfs:label "publication" .
+schema:startDate rdfs:label "start date" .
+schema:endDate rdfs:label "end date" .
+schema:publishedBy rdfs:label "published by" .
+schema:datePublished rdfs:label "date published" .
+schema:publication rdfs:label "publication" .
+schema:datePublished rdfs:label "date published" .
+schema:url rdfs:label "url" .
+schema:identifier rdfs:label "identifier" .
+schema:keywords rdfs:label "keyword" .
+
+skos:definition rdfs:label "definition" .
+

trustgraph-base/trustgraph/knowledge/document.py

@@ -3,12 +3,14 @@
 from .. schema import Triple, Value
 
 class DigitalDocument:
+
     def __init__(
             self, id, name=None, description=None, copyright_notice=None,
             copyright_holder=None, copyright_year=None, license=None,
             identifier=None,
             publication=None, url=None, keywords=[]
     ):
+
         self.id = id
         self.name = name
         self.description = description
@@ -116,4 +118,3 @@ def emit(self, emit):
                 p=Value(value=URL, is_uri=True),
                 o=Value(value=self.url, is_uri=True)
             ))
-

trustgraph-base/trustgraph/knowledge/publication.py

@@ -67,4 +67,3 @@ def emit(self, emit):
                 s=Value(value=self.id, is_uri=True),
                 p=Value(value=END_DATE, is_uri=True),
                 o=Value(value=self.end_date, is_uri=False)))
-

trustgraph-cli/scripts/tg-load-turtle

@@ -0,0 +1,160 @@
+#!/usr/bin/env python3
+
+"""
+Loads Graph embeddings into TrustGraph processing.
+"""
+
+import pulsar
+from pulsar.schema import JsonSchema
+from trustgraph.schema import Triples, Triple, Value, Metadata
+from trustgraph.schema import triples_store_queue
+import argparse
+import os
+import time
+import pyarrow as pa
+import rdflib
+
+from trustgraph.log_level import LogLevel
+
+default_user = 'trustgraph'
+default_collection = 'default'
+default_pulsar_host = os.getenv("PULSAR_HOST", 'pulsar://localhost:6650')
+default_output_queue = triples_store_queue
+
+class Loader:
+
+    def __init__(
+            self,
+            pulsar_host,
+            output_queue,
+            log_level,
+            files,
+            user,
+            collection,
+    ):
+
+        self.client = pulsar.Client(
+            pulsar_host,
+            logger=pulsar.ConsoleLogger(log_level.to_pulsar())
+        )
+
+        self.producer = self.client.create_producer(
+            topic=output_queue,
+            schema=JsonSchema(Triples),
+            chunking_enabled=True,
+        )
+
+        self.files = files
+        self.user = user
+        self.collection = collection
+
+    def run(self):
+
+        try:
+
+            for file in self.files:
+                self.load_file(file)
+
+        except Exception as e:
+            print(e, flush=True)
+
+    def load_file(self, file):
+
+        g = rdflib.Graph()
+        g.parse(file, format="turtle")
+
+        for e in g:
+            s = Value(value=str(e[0]), is_uri=True)
+            p = Value(value=str(e[1]), is_uri=True)
+            if type(e[2]) == rdflib.term.URIRef:
+                o = Value(value=str(e[2]), is_uri=True)
+            else:
+                o = Value(value=str(e[2]), is_uri=False)
+
+            r = Triples(
+                metadata=Metadata(
+                    id=None,
+                    metadata=[],
+                    user=self.user,
+                    collection=self.collection,
+                ),
+                triples=[ Triple(s=s, p=p, o=o) ]
+            )
+
+            self.producer.send(r)
+
+    def __del__(self):
+        self.client.close()
+
+def main():
+
+    parser = argparse.ArgumentParser(
+        prog='loader',
+        description=__doc__,
+    )
+
+    parser.add_argument(
+        '-p', '--pulsar-host',
+        default=default_pulsar_host,
+        help=f'Pulsar host (default: {default_pulsar_host})',
+    )
+
+    parser.add_argument(
+        '-o', '--output-queue',
+        default=default_output_queue,
+        help=f'Output queue (default: {default_output_queue})'
+    )
+
+    parser.add_argument(
+        '-u', '--user',
+        default=default_user,
+        help=f'User ID (default: {default_user})'
+    )
+
+    parser.add_argument(
+        '-c', '--collection',
+        default=default_collection,
+        help=f'Collection ID (default: {default_collection})'
+    )
+
+    parser.add_argument(
+        '-l', '--log-level',
+        type=LogLevel,
+        default=LogLevel.ERROR,
+        choices=list(LogLevel),
+        help=f'Output queue (default: info)'
+    )
+
+    parser.add_argument(
+        'files', nargs='+',
+        help=f'Turtle files to load'
+    )
+
+    args = parser.parse_args()
+
+    while True:
+
+        try:
+            p = Loader(
+                pulsar_host=args.pulsar_host,
+                output_queue=args.output_queue,
+                log_level=args.log_level,
+                files=args.files,
+                user=args.user,
+                collection=args.collection,
+            )
+
+            p.run()
+
+            print("File loaded.")
+            break
+
+        except Exception as e:
+
+            print("Exception:", e, flush=True)
+            print("Will retry...", flush=True)
+
+        time.sleep(10)
+
+main()
+

trustgraph-cli/setup.py

@@ -46,6 +46,7 @@
         "scripts/tg-init-pulsar-manager",
         "scripts/tg-load-pdf",
         "scripts/tg-load-text",
+        "scripts/tg-load-turtle",
         "scripts/tg-query-document-rag",
         "scripts/tg-query-graph-rag",
         "scripts/tg-init-pulsar",

trustgraph-flow/trustgraph/extract/kg/relationships/extract.py

@@ -189,7 +189,7 @@ def handle(self, msg):
                     # 'Subject of' for o
                     triples.append(Triple(
                         s=o_value,
-                        p=RDF_LABEL_VALUE,
+                        p=SUBJECT_OF_VALUE,
                         o=Value(value=v.metadata.id, is_uri=True)
                     ))