Rewritten in go and python

recommender/config.py

@@ -0,0 +1,38 @@
+import os
+
+def get_postgres_dsn():
+    user = os.getenv('POSTGRES_USER', None)
+    if user is None:
+        raise ValueError('POSTGRES_USER is not set')
+
+    password = os.getenv('POSTGRES_PASSWORD', None)
+    if password is None:
+        raise ValueError('POSTGRES_PASSWORD is not set')
+
+    host = os.getenv('POSTGRES_HOST', None)
+    if host is None:
+        raise ValueError('POSTGRES_HOST is not set')
+
+    port = os.getenv('POSTGRES_PORT', None)
+    if port is None:
+        raise ValueError('POSTGRES_PORT is not set')
+    try:
+        port = int(port)
+    except ValueError:
+        raise ValueError('POSTGRES_PORT is not an integer')
+
+    dbname = os.getenv('POSTGRES_DB', None)
+    if dbname is None:
+        raise ValueError('POSTGRES_DB is not set')
+
+    return f'postgres://{user}:{password}@{host}:{port}/{dbname}?sslmode=disable'
+
+def get_grpc_port():
+    port = os.getenv('GRPC_PORT', None)
+    if port is None:
+        raise ValueError('GRPC_PORT is not set')
+    try:
+        port = int(port)
+    except ValueError:
+        raise ValueError('GRPC_PORT is not an integer')
+    return port