Feature/subpackages (#80)

* Renaming what will become the core package

* Tweaking to get  package build working

* Fix metering merge

* Rename to core directory

* Bump version.  Use namespace searching for packaging trustgraph-core

* Change references to trustgraph-core

* Forming embeddings-hf package

* Reference modules in core package.

* Build both packages to one container, bump version

* Update YAMLs

trustgraph-core/scripts/load-graph-embeddings

@@ -0,0 +1,145 @@
+#!/usr/bin/env python3
+
+"""
+Loads Graph embeddings into TrustGraph processing.
+"""
+
+import pulsar
+from pulsar.schema import JsonSchema
+from trustgraph.core.schema import GraphEmbeddings, Value
+from trustgraph.core.schema import graph_embeddings_store_queue
+import argparse
+import os
+import time
+import pyarrow as pa
+import pyarrow.parquet as pq
+
+from trustgraph.core.log_level import LogLevel
+
+class Loader:
+
+    def __init__(
+            self,
+            pulsar_host,
+            output_queue,
+            log_level,
+            file,
+    ):
+
+        self.client = pulsar.Client(
+            pulsar_host,
+            logger=pulsar.ConsoleLogger(log_level.to_pulsar())
+        )
+
+        self.producer = self.client.create_producer(
+            topic=output_queue,
+            schema=JsonSchema(GraphEmbeddings),
+            chunking_enabled=True,
+        )
+
+        self.file = file
+
+    def run(self):
+
+        try:
+
+            path = self.file
+
+            print("Reading file...")
+            table = pq.read_table(path)
+            print("Loaded.")
+
+            names = set(table.column_names)
+
+            if "embeddings" not in names:
+                print("No 'embeddings' column")
+
+            if "entity" not in names:
+                print("No 'entity' column")
+
+            embc = table.column("embeddings")
+            entc = table.column("entity")
+
+            for emb, ent in zip(embc, entc):
+
+                b = emb.as_py()
+                n = ent.as_py()
+
+                r = GraphEmbeddings(
+                    vectors=b,
+                    entity=Value(
+                        value=n,
+                        is_uri=n.startswith("https:")
+                    )
+                )
+
+                self.producer.send(r)
+
+        except Exception as e:
+            print(e, flush=True)
+            
+    def __del__(self):
+        self.client.close()
+
+def main():
+
+    parser = argparse.ArgumentParser(
+        prog='loader',
+        description=__doc__,
+    )
+
+    default_pulsar_host = os.getenv("PULSAR_HOST", 'pulsar://localhost:6650')
+    default_output_queue = graph_embeddings_store_queue
+
+    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(
+        '-l', '--log-level',
+        type=LogLevel,
+        default=LogLevel.ERROR,
+        choices=list(LogLevel),
+        help=f'Output queue (default: info)'
+    )
+
+    parser.add_argument(
+        '-f', '--file',
+        required=True,
+        help=f'File 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,
+                file=args.file,
+            )
+
+            p.run()
+
+            print("File loaded.")
+            break
+
+        except Exception as e:
+
+            print("Exception:", e, flush=True)
+            print("Will retry...", flush=True)
+
+        time.sleep(10)
+
+main()
+