terraform/terraform/eval_provider.go

63 lines
2.1 KiB
Go

package terraform
import (
"fmt"
"log"
"github.com/hashicorp/hcl/v2"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/configs"
"github.com/hashicorp/terraform/providers"
)
func buildProviderConfig(ctx EvalContext, addr addrs.AbsProviderConfig, config *configs.Provider) hcl.Body {
var configBody hcl.Body
if config != nil {
configBody = config.Config
}
var inputBody hcl.Body
inputConfig := ctx.ProviderInput(addr)
if len(inputConfig) > 0 {
inputBody = configs.SynthBody("<input-prompt>", inputConfig)
}
switch {
case configBody != nil && inputBody != nil:
log.Printf("[TRACE] buildProviderConfig for %s: merging explicit config and input", addr)
// Note that the inputBody is the _base_ here, because configs.MergeBodies
// expects the base have all of the required fields, while these are
// forced to be optional for the override. The input process should
// guarantee that we have a value for each of the required arguments and
// that in practice the sets of attributes in each body will be
// disjoint.
return configs.MergeBodies(inputBody, configBody)
case configBody != nil:
log.Printf("[TRACE] buildProviderConfig for %s: using explicit config only", addr)
return configBody
case inputBody != nil:
log.Printf("[TRACE] buildProviderConfig for %s: using input only", addr)
return inputBody
default:
log.Printf("[TRACE] buildProviderConfig for %s: no configuration at all", addr)
return hcl.EmptyBody()
}
}
// GetProvider returns the providers.Interface and schema for a given provider.
func GetProvider(ctx EvalContext, addr addrs.AbsProviderConfig) (providers.Interface, *ProviderSchema, error) {
if addr.Provider.Type == "" {
// Should never happen
panic("EvalGetProvider used with uninitialized provider configuration address")
}
provider := ctx.Provider(addr)
if provider == nil {
return nil, &ProviderSchema{}, fmt.Errorf("provider %s not initialized", addr)
}
// Not all callers require a schema, so we will leave checking for a nil
// schema to the callers.
schema := ctx.ProviderSchema(addr)
return provider, schema, nil
}