Feature/config service (#332)

Configuration service provides an API to change configuration. Complete configuration is pushed down a config queue so that users have a complete copy of config object.

trustgraph-cli/scripts/tg-init-pulsar

@@ -79,6 +79,13 @@ def init(url, tenant="tg"):
         }
     })
 
+    ensure_namespace(url, tenant, "config", {
+        "retention_policies": {
+            "retentionSizeInMB": 50,
+            "retentionTimeInMinutes": -1,
+        }
+    })
+
 def main():
 
     parser = argparse.ArgumentParser(

trustgraph-cli/scripts/tg-show-config

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+"""
+Dumps out the current configuration
+"""
+
+import argparse
+import os
+from trustgraph.api import Api
+import json
+
+default_url = os.getenv("TRUSTGRAPH_URL", 'http://localhost:8088/')
+
+def show_config(url):
+
+    api = Api(url)
+
+    config, version = api.get_config()
+
+    print("Version:", version)
+    print(json.dumps(config, indent=4))
+
+def main():
+
+    parser = argparse.ArgumentParser(
+        prog='tg-show-config',
+        description=__doc__,
+    )
+
+    parser.add_argument(
+        '-u', '--api-url',
+        default=default_url,
+        help=f'API URL (default: {default_url})',
+    )
+
+    args = parser.parse_args()
+
+    try:
+
+        show_config(
+            url=args.api_url,
+        )
+
+    except Exception as e:
+
+        print("Exception:", e, flush=True)
+
+main()
+