Ability to reference multiple types / generate resources multiple times

[Breee]

What problem are you facing?

• The keycloak provider is generated via upjet
• I'm currently facing the issue that the terraform provider uses generic types under the hood, for example for Clients
• In reality we have OpenID Client and Saml Client and sadly no Generic Client available as resource.
• This leads to problems when i have to create references for resources which just reference a Client, which can be both OpenId Client or Saml Client
• The upstream Terraform provider is dying and is unmaintained

How could Upjet help solve your problem?

• I'm looking for a way to have references to either a Generic Type or multiple Types OR just generate a resource multiple times with different Kinds + References

• simplified example:

  r.References["client_id"] = config.Reference{
  Type:  []{"github.com/crossplane-contrib/provider-keycloak/apis/openidclient/v1alpha1.Client", "github.com/crossplane-contrib/provider-keycloak/apis/samlclient/v1alpha1.Client},
  }

• Or allow to do something like:

  
  package v1alpha

type GenericClient interface { OpenIDClient | SamlCLient }

- Also: as i see there is no working way to generate the same resource twice, which would be ugly but feasible (and loopable):  Both do not work

p.AddResourceConfigurator("keycloak_generic_protocol_mapper", func(r *config.Resource) {
    r.ShortGroup = "client"
    r.Name = "keycloak_generic_protocol_mapper"
    r.Kind = "OpenIDProtocolMapper"
    r.References["client_scope_id"] = config.Reference{
        Type: "github.com/crossplane-contrib/provider-keycloak/apis/openidclient/v1alpha1.ClientScope",
    }
})

p.AddResourceConfigurator("keycloak_generic_protocol_mapper", func(r *config.Resource) {
    r.ShortGroup = "client"
    r.Name = "keycloak_generic_protocol_mapper"
    r.Kind = "SamlProtocolMapper"
    r.References["client_scope_id"] = config.Reference{
        Type: "github.com/crossplane-contrib/provider-keycloak/apis/samlclient/v1alpha1.ClientScope",
    }
})

// Configure keycloak_generic_protocol_mapper for OpenIdProtocolMapper
openIdConfigurator := ujconfig.ResourceConfiguratorFn(func(r *ujconfig.Resource) {
    r.ShortGroup = Group
    r.Name = "keycloak_generic_protocol_mapper"
    r.Kind = "OpenIdProtocolMapper"
    r.References["client_scope_id"] = ujconfig.Reference{
        Type: "github.com/crossplane-contrib/provider-keycloak/apis/openid/v1alpha1.ClientScope",
    }
})
// Configure keycloak_generic_protocol_mapper for SamlProtocolMapper
samlConfigurator := ujconfig.ResourceConfiguratorFn(func(r *ujconfig.Resource) {
    r.ShortGroup = Group
    r.Name = "keycloak_generic_protocol_mapper"
    r.Kind = "SamlProtocolMapper"
    r.References["client_scope_id"] = ujconfig.Reference{
        Type: "github.com/crossplane-contrib/provider-keycloak/apis/saml/v1alpha1.ClientScope",
    }
})

p.SetResourceConfigurator("keycloak_generic_protocol_mapper", ujconfig.ResourceConfiguratorChain{openIdConfigurator, samlConfigurator})

code is also on this branch: https://github.com/crossplane-contrib/provider-keycloak/blob/dfacf3ae92d66b1df511884113858be1636b1327/config/mapper/config.go#L59

[yordis]

@Breee could this help me with https://github.com/crossplane-contrib/provider-upjet-digitalocean/issues/36 as well? I am trying to figure out what is the best strategy to deal with more than one type for a given resource field

[yordis]

Also Type is deprecated so it would be TerraformName

[Breee]

I'm not sure, maybe maintainers @muvaf or @ulucinar can tell us if that is even possible