fix: fix instantiate of Executor with write decorator (#5897)

jina/serve/executors/decorators.py

@@ -194,8 +194,10 @@ def _inject_owner_attrs(self, owner, name):
             owner._write_methods.append(self.fn.__name__)
 
         def __set_name__(self, owner, name):
+            _init_requests_by_class(owner)
             if self._requests_decorator:
                 self._requests_decorator._inject_owner_attrs(owner, name, None, None)
+
             self._inject_owner_attrs(owner, name)
 
             setattr(owner, name, self.fn)

tests/unit/serve/executors/test_executor.py

@@ -668,6 +668,16 @@ def foo(self, docs, **kwargs):
 
 def test_write_decorator():
     class WriteExecutor(Executor):
+        @write
+        @requests(on='/delete')
+        def delete(self, **kwargs):
+            pass
+
+        @requests(on='/bar')
+        @write
+        def bar(self, **kwargs):
+            pass
+
         @requests(on='/index')
         @write()
         def index(self, **kwargs):
@@ -678,6 +688,8 @@ def index(self, **kwargs):
         def update(self, **kwargs):
             pass
 
+
+
         @requests(on='/search')
         def search(self, **kwargs):
             pass
@@ -687,4 +699,4 @@ def foo(self, **kwargs):
             pass
 
     exec = WriteExecutor()
-    assert set(exec.write_endpoints) == {'/index', '/update'}
+    assert set(exec.write_endpoints) == {'/index', '/update', '/delete', '/bar'}