app.lambda_context with @app.schedule

[danil-smirnov]

Hi,

I've just examined this issue - still have questions, but the issue is closed now, so I've decided to create a new one.

The following stated in the issue:

However, the app object does expose a lambda_context property that you could access from with in the schedule event function.

I believe it't not true as I wasn't able to call app.lambda_context from a method decorated by @app.schedule.

I've tried the following code:

from chalice import Chalice

app = Chalice(app_name='chalice-lambda_context-poc')

@app.route('/')
def index():
    print('app.lambda_context.invoked_function_arn : ' + app.lambda_context.invoked_function_arn)

@app.schedule('rate(1 minute)')
def scheduled(event):
    print('event.context.invoked_function_arn: ' + event.context.invoked_function_arn)
    print('app.lambda_context.invoked_function_arn: ' + app.lambda_context.invoked_function_arn)

If you run it and check /aws/lambda/chalice-lambda_context-poc-dev-scheduled log group, there is an error raised in the second print statement:

'NoneType' object has no attribute 'invoked_function_arn': AttributeError
Traceback (most recent call last):
File "/var/task/chalice/app.py", line 1130, in __call__
return self.func(event_obj)
File "/var/task/app.py", line 13, in scheduled
print('app.lambda_context.invoked_function_arn: ' + app.lambda_context.invoked_function_arn)
AttributeError: 'NoneType' object has no attribute 'invoked_function_arn'

So it seems we can't access app.lambda_context from methods decorated by @app.schedule.

I think it's quite confusing as not obvious from the documentation which states app.lambda_context is available always.

If this is by design, I assume it should be mentioned in the docs on page
https://chalice.readthedocs.io/en/latest/api.html

[stealthycoin]

Yes this is intentional, I updated the documentation to reflect this, the code that Kyle wrote in the comment you linked was a suggestion, not how it worked, or works now.