bitbake: hashserv: Add SQLalchemy backend

Adds an SQLAlchemy backend to the server. While this database backend is
slower than the more direct sqlite backend, it easily supports just
about any SQL server, which is useful for large scale deployments.

(Bitbake rev: e0b73466dd7478c77c82f46879246c1b68b228c0)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/bitbake-hashserv

@@ -69,6 +69,16 @@ To bind to all addresses, leave the ADDRESS empty, e.g. "--bind :8686" or
         action="store_true",
         help="Disallow write operations from clients ($HASHSERVER_READ_ONLY)",
     )
+    parser.add_argument(
+        "--db-username",
+        default=os.environ.get("HASHSERVER_DB_USERNAME", None),
+        help="Database username ($HASHSERVER_DB_USERNAME)",
+    )
+    parser.add_argument(
+        "--db-password",
+        default=os.environ.get("HASHSERVER_DB_PASSWORD", None),
+        help="Database password ($HASHSERVER_DB_PASSWORD)",
+    )
 
     args = parser.parse_args()
 
@@ -90,6 +100,8 @@ To bind to all addresses, leave the ADDRESS empty, e.g. "--bind :8686" or
         args.database,
         upstream=args.upstream,
         read_only=read_only,
+        db_username=args.db_username,
+        db_password=args.db_password,
     )
     server.serve_forever()
     return 0