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/lib/hashserv/tests.py

@@ -33,7 +33,7 @@ class HashEquivalenceTestSetup(object):
     def start_server(self, dbpath=None, upstream=None, read_only=False, prefunc=server_prefunc):
         self.server_index += 1
         if dbpath is None:
-            dbpath = os.path.join(self.temp_dir.name, "db%d.sqlite" % self.server_index)
+            dbpath = self.make_dbpath()
 
         def cleanup_server(server):
             if server.process.exitcode is not None:
@@ -53,6 +53,9 @@ class HashEquivalenceTestSetup(object):
 
         return server
 
+    def make_dbpath(self):
+        return os.path.join(self.temp_dir.name, "db%d.sqlite" % self.server_index)
+
     def start_client(self, server_address):
         def cleanup_client(client):
             client.close()
@@ -517,6 +520,20 @@ class TestHashEquivalenceWebsocketServer(HashEquivalenceTestSetup, HashEquivalen
         return "ws://%s:0" % host
 
 
+class TestHashEquivalenceWebsocketsSQLAlchemyServer(TestHashEquivalenceWebsocketServer):
+    def setUp(self):
+        try:
+            import sqlalchemy
+            import aiosqlite
+        except ImportError as e:
+            self.skipTest(str(e))
+
+        super().setUp()
+
+    def make_dbpath(self):
+        return "sqlite+aiosqlite:///%s" % os.path.join(self.temp_dir.name, "db%d.sqlite" % self.server_index)
+
+
 class TestHashEquivalenceExternalServer(HashEquivalenceTestSetup, HashEquivalenceCommonTests, unittest.TestCase):
     def start_test_server(self):
         if 'BB_TEST_HASHSERV' not in os.environ: