Feature/pulsar api key support (#308)

* Add pulsar API token check

* Added missing api_key references

---------

Co-authored-by: Tyler O <4535788+toliver38@users.noreply.github.com>

trustgraph-cli/scripts/tg-load-turtle

@@ -19,6 +19,8 @@ from trustgraph.log_level import LogLevel
 default_user = 'trustgraph'
 default_collection = 'default'
 default_pulsar_host = os.getenv("PULSAR_HOST", 'pulsar://localhost:6650')
+default_pulsar_api_key = os.getenv("PULSAR_API_KEY", None)
+
 default_output_queue = triples_store_queue
 
 class Loader:
@@ -31,12 +33,21 @@ class Loader:
             files,
             user,
             collection,
+            pulsar_api_key=None,
     ):
 
-        self.client = pulsar.Client(
-            pulsar_host,
-            logger=pulsar.ConsoleLogger(log_level.to_pulsar())
-        )
+        if pulsar_api_key:
+            auth = pulsar.AuthenticationToken(pulsar_api_key)
+            self.client = pulsar.Client(
+				pulsar_host,
+				authentication=auth,
+				logger=pulsar.ConsoleLogger(log_level.to_pulsar())
+            )
+        else:
+            self.client = pulsar.Client(
+				pulsar_host,
+				logger=pulsar.ConsoleLogger(log_level.to_pulsar())
+            )
 
         self.producer = self.client.create_producer(
             topic=output_queue,
@@ -98,6 +109,12 @@ def main():
         default=default_pulsar_host,
         help=f'Pulsar host (default: {default_pulsar_host})',
     )
+    
+    parser.add_argument(
+        '--pulsar-api-key',
+        default=default_pulsar_api_key,
+        help=f'Pulsar API key',
+    )
 
     parser.add_argument(
         '-o', '--output-queue',
@@ -137,6 +154,7 @@ def main():
         try:
             p = Loader(
                 pulsar_host=args.pulsar_host,
+                pulsar_api_key=args.pulsar_api_key,
                 output_queue=args.output_queue,
                 log_level=args.log_level,
                 files=args.files,