Rename RESTApplication to RestAdapter since its purpose is to connect app frameworks to request handlers

- This avoids confusion between frameworks like fast api app and the rest application (which does not have any server hosting)

Author: aneeshgarg

src/a2a/server/apps/__init__.py

@@ -6,10 +6,7 @@
     CallContextBuilder,
     JSONRPCApplication,
 )
-from a2a.server.apps.rest import (
-    A2ARESTFastAPIApplication,
-    RESTApplication,
-)
+from a2a.server.apps.rest import A2ARESTFastAPIApplication
 
 
 __all__ = [
@@ -18,5 +15,4 @@
     'A2AStarletteApplication',
     'CallContextBuilder',
     'JSONRPCApplication',
-    'RESTApplication',
 ]

src/a2a/server/apps/rest/__init__.py

@@ -1,10 +1,8 @@
 """A2A REST Applications."""
 
 from a2a.server.apps.rest.fastapi_app import A2ARESTFastAPIApplication
-from a2a.server.apps.rest.rest_app import RESTApplication
 
 
 __all__ = [
     'A2ARESTFastAPIApplication',
-    'RESTApplication',
 ]

src/a2a/server/apps/rest/fastapi_app.py

@@ -7,8 +7,8 @@
 from a2a.server.apps.jsonrpc.jsonrpc_app import (
     CallContextBuilder,
 )
-from a2a.server.apps.rest.rest_app import (
-    RESTApplication,
+from a2a.server.apps.rest.rest_adapter import (
+    RESTAdapter,
 )
 from a2a.server.request_handlers.request_handler import RequestHandler
 from a2a.types import AgentCard
@@ -44,7 +44,7 @@ def __init__(
               ServerCallContext passed to the http_handler. If None, no
               ServerCallContext is passed.
         """
-        self._handler = RESTApplication(
+        self._adapter = RESTAdapter(
             agent_card=agent_card,
             http_handler=http_handler,
             context_builder=context_builder,
@@ -69,14 +69,14 @@ def build(
         """
         app = FastAPI(**kwargs)
         router = APIRouter()
-        for route, callback in self._handler.routes().items():
+        for route, callback in self._adapter.routes().items():
             router.add_api_route(
                 f'{rpc_url}{route[0]}', callback, methods=[route[1]]
             )
 
         @router.get(f'{rpc_url}{agent_card_url}')
         async def get_agent_card(request: Request) -> Response:
-            return await self._handler._handle_get_agent_card(request)  # noqa: SLF001
+            return await self._adapter._handle_get_agent_card(request)  # noqa: SLF001
 
         app.include_router(router)
         return app

src/a2a/server/apps/rest/rest_app.py src/a2a/server/apps/rest/rest_adapter.pysrc/a2a/server/apps/rest/rest_app.py renamed to src/a2a/server/apps/rest/rest_adapter.py

@@ -26,8 +26,8 @@
 logger = logging.getLogger(__name__)
 
 
-class RESTApplication:
-    """Base class for A2A REST applications.
+class RESTAdapter:
+    """Adapter to make RequestHandler work with RESTful API.
 
     Defines REST requests processors and the routes to attach them too, as well as
     manages response generation including Server-Sent Events (SSE).