Write a "Hello World" into an AWS CloudWatch Logs service

00_helloWorld.py

#!/usr/local/bin/python3

import boto3
import time


logs = boto3.client('logs')

LOG_GROUP='TUTORIAL-DEV2'
LOG_STREAM='stream1'

logs.create_log_group(logGroupName=LOG_GROUP)
logs.create_log_stream(logGroupName=LOG_GROUP, logStreamName=LOG_STREAM)


timestamp = int(round(time.time() * 1000))

response = logs.put_log_events(
    logGroupName=LOG_GROUP,
    logStreamName=LOG_STREAM,
    logEvents=[
        {
            'timestamp': timestamp,
            'message': time.strftime('%Y-%m-%d %H:%M:%S')+'\tHello world, here is our first log message!'
        }
    ]
)

Hi James, this code doesn't work, I receive NameError: name 'response' is not defined, have you had any luck with a similar solution?

I think the reason why you are having the error is because the response is being referenced in the function

What I think you may have todo is call the following

response = cloudwatch_logs.describe_log_streams(logGroupName='MYLOG-GROUP') and reference the token
response['logStreams'][0]['uploadSequenceToken']

response = logs.put_log_events(
    logGroupName=LOG_GROUP,
    logStreamName=LOG_STREAM,
    logEvents=[
        {
            'timestamp': timestamp,
            'message': 'Hello world, here is our second log message to the same stream!'
        }
    ],
    sequenceToken=response["nextSequenceToken"]

Hi Geoff Singer,

This is fine but for logging one message we are making two API one to describe and get the token
and second one to actually log the request.

But when we do actually log the request using put_log_events() we get the token in that response only
Is there anyway we can use that token itself?