Custom naming for serverless-step-functions

[icarus-sullivan]

Allow users to provide their own stepMachine naming convention.

example

functions:
  hello:
    handler: handler.hello

stepFunctions:
  stateMachines:
    hellostepfunc:
      Name: hellostepfunc-${opt:stage}
      definition:
        <your definition>

plugins:
  - serverless-step-functions

[coveralls]

Coverage decreased (-0.9%) to 99.091% when pulling 0bc038d on icarus-sullivan:CustomNaming into 076e8e6 on horike37:master.

[coveralls]

Coverage decreased (-0.9%) to 99.091% when pulling 08249b0 on icarus-sullivan:CustomNaming into 076e8e6 on horike37:master.

[coveralls]

Coverage decreased (-0.9%) to 99.091% when pulling b1a3025 on icarus-sullivan:CustomNaming into 076e8e6 on horike37:master.

[coveralls]

Coverage remained the same at 100.0% when pulling e92203b on icarus-sullivan:CustomNaming into 076e8e6 on horike37:master.

[icarus-sullivan]

Sorry it took a while to get the lint/tests necessary updates.

[justinmchase]

First off 👏

A few questions though:

In your example code above you have this line:

statemachine_arn: ${self:resources.Outputs.HelloStepfunc.Value}

But you have omitted the Resources->Outputs section from the example. Was that just an oversight or does this PR automatically add step function arns to outputs as well?

Also, for your name you have Name: hellostepfunc-${opt:stage} but the actual name/arn will still have the random string attached correct?

e.g.

hellostepfunc-prod-QWUYMJP6O0QH

[justinmchase]

I would recommend adding this field to the main Readme.md also:

https://github.com/horike37/serverless-step-functions/blob/master/README.md#setup

Maybe also update the Tips example at the bottom.

[icarus-sullivan]

** I'm on mobile at the moment so my answer may be short and have spelling errors.

The leftover step_function environment variable was a copy and paste from an example on these threads. However it will still work even with a custom name.

Docs: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-stepfunctions-statemachine.html

Looks like the following will find the stepFunction and ignore the trailing characters.

{ "Fn::GetAtt": ["MyStateMachine", "Name"] }

[coveralls]

Coverage remained the same at 100.0% when pulling 18aba0f on icarus-sullivan:CustomNaming into 076e8e6 on horike37:master.

[horike37]

Suuuuuuper Cool @icarus-sullivan!!!
Thank you for sending this PR!! This looks good!
I didn't come up with this approach.

I will test it locally. However I am busy in this week, please give me a little time.

[horike37]

Thank you for this @icarus-sullivan !
I have tested locally and work it correctly! LGTM.
merged!