fix: use named logger in executor, default server log level to INFO

Signed-off-by: Sam Betts <1769706+Tehsmash@users.noreply.github.com>

Author: Tehsmash

examples/echo_agent/echo_agent_executor.py

@@ -1,5 +1,7 @@
 import logging
 
+logger = logging.getLogger(__name__)
+
 from a2a.helpers import new_task_from_user_message
 from a2a.server.agent_execution import AgentExecutor, RequestContext
 from a2a.server.agent_execution.agent_input_queue import AgentInputQueue
@@ -29,7 +31,7 @@ async def execute(
         ):
             raise Exception("invalid message")
 
-        logging.info(f"received message: {turn.message}")
+        logger.info(f"received message: {turn.message}")
 
         # The V2 request handler requires an initial Task to be enqueued
         # before any status/artifact update events are emitted.

examples/echo_agent/server.py

@@ -126,7 +126,7 @@ def parse_arguments() -> argparse.Namespace:
         "--log-level",
         type=str,
         required=False,
-        default="ERROR",
+        default="INFO",
     )
 
     parser.add_argument(