AWS Step Functions support

[lielran]

aws step functions support

Feature proposals:

• the new aws step function is based on aws lambda and seem like perfect for lambda orchestration(state machine style).
• serverless integration can be very handy.

[rowanu]

How would this work? Would people have to write their own FSM using AWSSL?

[lielran]

IMO,since the Json format is very simple(unlike cloudformation),It will be a good idea to write FSM using AWSSL and let serverless handle that for you.
One of the issues is that you need to provide ARN for your lambdas function. In that case we will need a place holder or a pointer to your function.

[lielran]

it's also possible to define a Task("Activity") without ARN that will ping an HTTP endpoint.

[pmuens]

@horike37 just released the very cool "Step Functions" plugin so you can use them now in Serverless 👍 : https://github.com/horike37/serverless-step-functions

[rowanu]

Can this issue be closed then?

[pmuens]

Not sure if we should put this into core some time (based on @horike37 plugin)...

Any thoughts @eahefnawy @nikgraf @mthenw ?

[eahefnawy]

We may add it, but I'm guessing the design won't exactly match @horike37 plugin...mainly for cross-provider compatibility reasons. I feel that the config used with that plugin is too AWS specific.

[horike37]

If you consider multi-providers, implementing provider-specific feature on the core may make maintenance difficult.
And you might wait for support of CloudFormation. Step Functions SDK can not update a statemachine. My plugin updates a statemachine once by deleting and creating a new one. But Invocation logs are deleted.

If CF supports, it may become to update correctly.

[lielran]

I think it should be in the core since it's the really one way to support flows and keep the function small(and not mini-application).I like the idea that @horike37 plugin support the aws step file.
also, I'm not sure about multi-providers since it may not be any time soon.

[williamgueiros]

@lielran i think @horike37 is correct, i can't found information, how add information on aws step functions, without interface .

Do you saw that information?

[rowanu]

https://aws.amazon.com/about-aws/whats-new/2017/02/aws-cloudformation-adds-support-for-aws-step-functions

[horike37]

How would this work finally?
If including in the core, I would love to do this work.
I think the first step is that we should decide command design and structure of serverless.yml for Step functions.