[synthetics] Support setting environment variables during canary creation

[dlee-cpu]

Support setting environment variables during canary creation

Use Case

Since the canary is wrapped by a lambda, we should be able to create env variables that are available during the lambda execution so we can pass additional runtime information during test runs.

Proposed Solution

Other

• [ ] :wave: I may be able to implement this feature request
• [ ] :warning: This feature might incur a breaking change

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This is a :rocket: Feature Request

[NetaNir]

It does not seem like it is possible to configure the environment variable using Canary CloudFormation resource. When creating a Canary the synthetics service creates a lambda function on your behalf, the lambda resource itself is not created via CloudFormation, so if the Canary resource does not expose these properties on its API there is no (easy) way to change them using the resource.

[dlee-cpu]

thanks for the reply. I should have opened this as a feature request to the cloudformation canary resource rather than the cdk.

[flochaz]

It's now possible ( https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-synthetics-canary-runconfig.html#cfn-synthetics-canary-runconfig-environmentvariables )

[dlee-cpu]

It's now possible ( https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-synthetics-canary-runconfig.html#cfn-synthetics-canary-runconfig-environmentvariables )

thanks for keeping me in the loop and constantly improving the developer experience.

[jonny-rimek]

adding an env var looks like this:

        const cfnCanary = canary.node.defaultChild as synthetics.CfnCanary
        cfnCanary.addPropertyOverride('RunConfig.EnvironmentVariables', {
            API_URL: "someurl"
        })

[github-actions[bot]]

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