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Setup logging middleware #41

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Merged
arangatang merged 3 commits into from
Oct 7, 2025
Merged

Setup logging middleware #41

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c947f59
Add LoggingMiddleware.
arangatang Oct 7, 2025
c376bcf
Cleanup.
arangatang Oct 7, 2025
035ab07
Only enable payload logging in debug mode.
arangatang Oct 7, 2025
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18 changes: 18 additions & 0 deletions aws_mcp_proxy/server.py
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
determine_service_name,
)
from fastmcp.server.middleware.error_handling import RetryMiddleware
from fastmcp.server.middleware.logging import LoggingMiddleware
from fastmcp.server.server import FastMCP
from typing import Any

Expand Down Expand Up @@ -65,6 +66,7 @@ async def setup_mcp_mode(local_mcp: FastMCP, args) -> None:

# Create proxy with the transport
proxy = FastMCP.as_proxy(transport)
add_logging_middleware(proxy, args.log_level)
add_tool_filtering_middleware(proxy, args.read_only)

if args.retries:
Expand Down Expand Up @@ -99,6 +101,22 @@ def add_retry_middleware(mcp: FastMCP, retries: int) -> None:
mcp.add_middleware(RetryMiddleware(retries))


def add_logging_middleware(mcp: FastMCP, log_level: int) -> None:
"""Add logging middleware."""
if log_level != 'DEBUG':
return
middleware_logger = logging.getLogger('aws-mcp-proxy-middleware-logger')
middleware_logger.setLevel(log_level)
mcp.add_middleware(
LoggingMiddleware(
logger=middleware_logger,
log_level=middleware_logger.level,
include_payloads=True,
include_payload_length=True,
)
)


def parse_args():
"""Parse command line arguments."""
parser = argparse.ArgumentParser(
Expand Down