These changes take a step towards simplifying and unifying the
generation of output types in the Go SDKs, especially for pointer,
array, and map outputs. This code was previously duplicated amongst the
various specialized output type generators, which led to inconsistencies
between the various implementaitons.
This is prep work for fixing #7595.
This commit modifies Go program generation to prevent producing array
and slice object elements as pointers in args structures, which fails at
runtime and does not make sense in any case. For example, in the case of
a type defined like this in schema:
```json
"statements": {
"type": "array",
"items": {
"$ref": "/aws/v4.8.0/schema.json#/types/aws:iam/getPolicyDocumentStatement:getPolicyDocumentStatement"
}
},
```
The following (which fails at runtime) was produced before this change:
```go
Statements []*iam.GetPolicyDocumentStatement `pulumi:"statements"`
```
And the following is produced after after this change:
```go
Statements []iam.GetPolicyDocumentStatement `pulumi:"statements"`
```
Test expectations are updated accordingly.
This commit modifies the Go code generator to use configured aliases for
the root package name of a Go module. This is useful when a version 2
package is present, as it prevents generation of identifiers such as
"v2" which were produced by the old logic.
These changes support arbitrary combinations of input + plain types
within a schema. Handling plain types at the property level was not
sufficient to support such combinations. Reifying these types
required updating quite a bit of code. This is likely to have caused
some temporary complications, but should eventually lead to
substantial simplification in the SDK and program code generators.
With the new design, input and optional types are explicit in the schema
type system. Optionals will only appear at the outermost level of a type
(i.e. Input<Optional<>>, Array<Optional<>>, etc. will not occur). In
addition to explicit input types, each object type now has a "plain"
shape and an "input" shape. The former uses only plain types; the latter
uses input shapes wherever a plain type is not specified. Plain types
are indicated in the schema by setting the "plain" property of a type spec
to true.
In Go, resource types are modeled as pointers, but there were cases where the type was not being emitted as a pointer, leading to panics and marshaling errors in programs. Additionally, array and map values that are external references were being emitted as pointers, but only resources should be pointers (not types), regardless of whether the resource type is external or local.
If `rootPackageName` is set, we can look for the version in the
baseImportPath rather than at a location based on the package name -
which currently fails if every component is not named `pulumi-*`. To err
on the side of caution, this method is only used for packages where
`rootPackageName` is set, meaning existing SDKs retain their current
behavior.
The new behavior is confirmed via the test added in #6862.
When working in a monorepo environment, it can be desirable to generate
Go SDKs into a structure less like the upstream SDKs, and more like
this:
github.com/x/mymonorepo/sdk/go/package-name
Where `package-name` is also the root of a Go module. Since
`package-name` is not a valid package name in Go, it's also desirable to
be able to choose a replacement name and reduce the amount of nesting.
This commit adds a new Go option to the schema, `rootPackageName`, which
can be used to modify the generated root package name (e.g. to
`mypackage` instead of `package-name`, and remove the additional layer
of nesting.
Test coverage is added to ensure that the correct file structure and
package names are generated.
We've been emitting calls to `New<Resource>` for resource registrations
in Go, passing `nil` for args. However, some of those `New<Resource>`
functions actually check for `nil` args and return an error if the
resource has required arguments.
At first, I was looking for a way to check inside `New<Resource>` if
the `URN` option was specified and in that case not error on
`nil` args (like we do in other languages), but we don't provide a way
to access the resource option values outside the Go SDK), so I don't
think there is a way to do it this way for Go.
So instead, this change updates the registration code to call
`ctx.RegisterResource` directly instead of `New<Resource>`, where we can
pass a `nil` args.
This change adds schema and codegen support for plain properties which
are emitted typed as the plain type rather than wrapped as an `Input`.
Plain properties require a prompt value and do not accept a value that
is `Output`.
