Add async compatible classes

.gitignore

@@ -8,6 +8,7 @@ build
 *.egg
 coverage.xml
 junit.xml
+elasticsearch_dsl/_unasync/
 test_elasticsearch_dsl/htmlcov
 docs/_build
 .cache

elasticsearch_dsl/__init__.py

@@ -161,3 +161,27 @@
     "token_filter",
     "tokenizer",
 ]
+
+try:
+    from .document import AsyncDocument  # noqa: F401
+    from .faceted_search import AsyncFacetedSearch  # noqa: F401
+    from .index import AsyncIndex, AsyncIndexTemplate  # noqa: F401
+    from .mapping import AsyncMapping  # noqa: F401
+    from .search import AsyncMultiSearch, AsyncSearch  # noqa: F401
+    from .update_by_query import AsyncUpdateByQuery  # noqa: F401
+
+    __all__.extend(
+        [
+            "AsyncDocument",
+            "AsyncFacetedSearch",
+            "AsyncIndex",
+            "AsyncIndexTemplate",
+            "AsyncMapping",
+            "AsyncSearch",
+            "AsyncMultiSearch",
+            "AsyncUpdateByQuery",
+        ]
+    )
+    __all__.sort()
+except ImportError:
+    pass

elasticsearch_dsl/_async/__init__.py

@@ -0,0 +1,16 @@
+#  Licensed to Elasticsearch B.V. under one or more contributor
+#  license agreements. See the NOTICE file distributed with
+#  this work for additional information regarding copyright
+#  ownership. Elasticsearch B.V. licenses this file to you under
+#  the Apache License, Version 2.0 (the "License"); you may
+#  not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+# 	http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing,
+#  software distributed under the License is distributed on an
+#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#  KIND, either express or implied.  See the License for the
+#  specific language governing permissions and limitations
+#  under the License.