DevDiv meeting "notes" 9/30

[majastrz]

Summary

We spent most of the meeting discussing the problem of conditionally adding a property to a resource payload and making that consistent with other usage of conditionals in the language. (Covered JS spread operator as well as various variations of imperative and declarative conditional constructs).

Code Examples

The following are the syntax mockups we came up with during the meeting. I'm saving them here so we can reuse them during a team discussion:

if(resourceCondition) {
    resource foo 'res type' = {
        name: 'foo'
        properties: {
            p: 'v1'
            p2: x

            if(condition2) {
                weirdProperty: true
                relatedProperty: 222
            }

            otherWeirdProperty: condition ? 4 : undefined

            ...(condition ? { myProp: 4} : {})
        }
    }
}

/// break 
...
 dependsOn: [ foo ]
...

/// break

resource foo 'res type' = 
    if (condition) {
        name: 'foo'
        properties: {
            p: 'v1'
            p2: x

            if(condition2) {
                weirdProperty: true
                relatedProperty: 222
            }

            otherProperty: if (otherCondition) {

            }

            otherWeirdProperty: condition ? 4 : undefined

            ...(condition ? { myProp: 4} : {})
        }
    }

[WhitWaldo]

It'd be fantastic to see support for this, especially so I can create a single bicep file to conditionally include properties based on whether or not I'm deploying Windows or Linux machines.

Any idea of which version this might be slated for release in?

[alex-frankel]

We are starting the work on conditions now, so it should be available before the end of the year. Work is tracked with #186

[shenglol]

I've verified with a custom resource provider and an ARM integration test that ARM won't strip out null values before sending requests to RPs, which means we cannot rely on using ternary operator with null to conditionally set a resource property. We'll have to choose a syntax for conditional properties.