chore: Add enable_a2a option to adk command line

PiperOrigin-RevId: 775991652

src/google/adk/cli/cli_deploy.py

@@ -55,7 +55,7 @@ COPY "agents/{app_name}/" "/app/agents/{app_name}/"
 
 EXPOSE {port}
 
-CMD adk {command} --port={port} {host_option} {service_option} {trace_to_cloud_option} {allow_origins_option} "/app/agents"
+CMD adk {command} --port={port} {host_option} {service_option} {trace_to_cloud_option} {allow_origins_option} {a2a_option}"/app/agents"
 """
 
 _AGENT_ENGINE_APP_TEMPLATE = """
@@ -128,6 +128,7 @@ def to_cloud_run(
     session_service_uri: Optional[str] = None,
     artifact_service_uri: Optional[str] = None,
     memory_service_uri: Optional[str] = None,
+    a2a: bool = False,
 ):
   """Deploys an agent to Google Cloud Run.
 
@@ -189,6 +190,7 @@ def to_cloud_run(
     allow_origins_option = (
         f'--allow_origins={",".join(allow_origins)}' if allow_origins else ''
     )
+    a2a_option = '--a2a' if a2a else ''
     dockerfile_content = _DOCKERFILE_TEMPLATE.format(
         gcp_project_id=project,
         gcp_region=region,
@@ -206,6 +208,7 @@ def to_cloud_run(
         allow_origins_option=allow_origins_option,
         adk_version=adk_version,
         host_option=host_option,
+        a2a_option=a2a_option,
     )
     dockerfile_path = os.path.join(temp_folder, 'Dockerfile')
     os.makedirs(temp_folder, exist_ok=True)

src/google/adk/cli/cli_tools_click.py

@@ -576,6 +576,13 @@ def fast_api_common_options():
             " for Cloud Run."
         ),
     )
+    @click.option(
+        "--a2a",
+        is_flag=True,
+        show_default=True,
+        default=False,
+        help="Optional. Whether to enable A2A endpoint.",
+    )
     @functools.wraps(func)
     def wrapper(*args, **kwargs):
       return func(*args, **kwargs)
@@ -617,6 +624,7 @@ def cli_web(
     memory_service_uri: Optional[str] = None,
     session_db_url: Optional[str] = None,  # Deprecated
     artifact_storage_uri: Optional[str] = None,  # Deprecated
+    a2a: bool = False,
 ):
   """Starts a FastAPI server with Web UI for agents.
 
@@ -663,6 +671,9 @@ def cli_web(
       web=True,
       trace_to_cloud=trace_to_cloud,
       lifespan=_lifespan,
+      a2a=a2a,
+      host=host,
+      port=port,
   )
   config = uvicorn.Config(
       app,
@@ -709,6 +720,7 @@ def cli_api_server(
     memory_service_uri: Optional[str] = None,
     session_db_url: Optional[str] = None,  # Deprecated
     artifact_storage_uri: Optional[str] = None,  # Deprecated
+    a2a: bool = False,
 ):
   """Starts a FastAPI server for agents.
 
@@ -733,6 +745,9 @@ def cli_api_server(
           allow_origins=allow_origins,
           web=False,
           trace_to_cloud=trace_to_cloud,
+          a2a=a2a,
+          host=host,
+          port=port,
       ),
       host=host,
       port=port,
@@ -854,6 +869,7 @@ def cli_deploy_cloud_run(
     eval_storage_uri: Optional[str] = None,
     session_db_url: Optional[str] = None,  # Deprecated
     artifact_storage_uri: Optional[str] = None,  # Deprecated
+    a2a: bool = False,
 ):
   """Deploys an agent to Cloud Run.
 
@@ -884,6 +900,7 @@ def cli_deploy_cloud_run(
         session_service_uri=session_service_uri,
         artifact_service_uri=artifact_service_uri,
         memory_service_uri=memory_service_uri,
+        a2a=a2a,
     )
   except Exception as e:
     click.secho(f"Deploy failed: {e}", fg="red", err=True)

src/google/adk/cli/fast_api.py

@@ -204,6 +204,9 @@ def get_fast_api_app(
     eval_storage_uri: Optional[str] = None,
     allow_origins: Optional[list[str]] = None,
     web: bool,
+    a2a: bool = False,
+    host: str = "127.0.0.1",
+    port: int = 8000,
     trace_to_cloud: bool = False,
     lifespan: Optional[Lifespan[FastAPI]] = None,
 ) -> FastAPI: