Lambda printing to stdout

lambda_function.py

import awsiot.greengrasscoreipc
from awsiot.greengrasscoreipc.model import (
    PublishToTopicRequest,
    PublishMessage,
    BinaryMessage,
    QOS,
    PublishToIoTCoreRequest
)
import serial
import time
import sys
import logging

TIMEOUT = 10

# Setup logging to stdout
logger = logging.getLogger(__name__)
logging.basicConfig(stream=sys.stdout, level=logging.DEBUG)
logger.error("doing things!!")

print("waiting!!!!", file=sys.stdout, flush=True)

ipc_client = awsiot.greengrasscoreipc.connect()
future = None

print("name is {}".format(__name__), file=sys.stdout, flush=True)

def publish_message(message):
    topic = "gps/raw"
    request = PublishToIoTCoreRequest()
    request.topic_name = topic
    request.payload = bytes(message, "utf-8")
    request.qos = QOS.AT_LEAST_ONCE
    operation = ipc_client.new_publish_to_iot_core()
    operation.activate(request)
    future = operation.get_response()
    future.result(TIMEOUT)

def main():
    print("main loaded", file=sys.stdout, flush=True)

    serialport = serial.Serial("/dev/ttyAMA1", 9600)

    while True:
        print("trying", file=sys.stdout, flush=True)
        #message = serialport.readline()
        message = '{"hello":1}'
        print(message, file=sys.stdout, flush=True)
        publish_message(message)
        time.sleep(1)

# call main
main()
        
def function_handler(event, context):
    print("function handler", file=sys.stdout, flush=True)
    main()