Run local #1
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Run local #1
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This is a simple script to set up a local Step Functions and Lambda test
environment for a CDK-based project. It assumed that the local Step Functions
and Lambda systems so graciously provided by AWS in the form the Step Functions
local Docker image (amazon/aws-stepfunctions-local), and the SAM CLI (for Lambda
local), have already been set up.
The State Machine definition is extracted from the `synth'd` CDK template,
localised and injected into the local environment. If everythings comes up
successfully, it can simply be run using the ARN printed when it is created:
aws --region eu-central-1 stepfunctions \
--endpoint http://localhost:8083 \
start-execution \
--state-machine arn:aws:states:us-east-1:123456789012:stateMachine:BuildReleaseStateMachine165B927F \
--input "$(cat event.json)"
See:
* https://docs.aws.amazon.com/step-functions/latest/dg/sfn-local.html
* https://docs.aws.amazon.com/step-functions/latest/dg/sfn-local-config-options.html
* https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-cli-command-reference-sam-local-start-lambda.html
* https://docs.docker.com/docker-for-mac/networking/#use-cases-and-workarounds
A `--no-staging` syth sets the asset path to the local Lambda deployment packager, (rather than CDK's asset bundle), which local Lambda honours. See: aws/aws-cdk#716 (comment)
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An example of using CDK, SAM local (Lambda) and Step Functions local. Setup of SAM, SFn local and of course CDK is assumed.