github.com/leighwaller/terraform@v0.11.12-beta1/terraform/eval_interpolate.go (about)

     1  package terraform
     2  
     3  import (
     4  	"log"
     5  
     6  	"github.com/hashicorp/terraform/config"
     7  )
     8  
     9  // EvalInterpolate is an EvalNode implementation that takes a raw
    10  // configuration and interpolates it.
    11  type EvalInterpolate struct {
    12  	Config        *config.RawConfig
    13  	Resource      *Resource
    14  	Output        **ResourceConfig
    15  	ContinueOnErr bool
    16  }
    17  
    18  func (n *EvalInterpolate) Eval(ctx EvalContext) (interface{}, error) {
    19  	rc, err := ctx.Interpolate(n.Config, n.Resource)
    20  	if err != nil {
    21  		if n.ContinueOnErr {
    22  			log.Printf("[WARN] Interpolation %q failed: %s", n.Config.Key, err)
    23  			return nil, EvalEarlyExitError{}
    24  		}
    25  		return nil, err
    26  	}
    27  
    28  	if n.Output != nil {
    29  		*n.Output = rc
    30  	}
    31  
    32  	return nil, nil
    33  }
    34  
    35  // EvalInterpolateProvider is an EvalNode implementation that takes a
    36  // ProviderConfig and interpolates it. Provider configurations are the only
    37  // "inherited" type of configuration we have, and the original raw config may
    38  // have a different interpolation scope.
    39  type EvalInterpolateProvider struct {
    40  	Config   *config.ProviderConfig
    41  	Resource *Resource
    42  	Output   **ResourceConfig
    43  }
    44  
    45  func (n *EvalInterpolateProvider) Eval(ctx EvalContext) (interface{}, error) {
    46  	rc, err := ctx.InterpolateProvider(n.Config, n.Resource)
    47  	if err != nil {
    48  		return nil, err
    49  	}
    50  
    51  	if n.Output != nil {
    52  		*n.Output = rc
    53  	}
    54  
    55  	return nil, nil
    56  }