github.com/cmalfait/terraform@v0.11.12-beta1/helper/customdiff/force_new.go (about)

     1  package customdiff
     2  
     3  import (
     4  	"github.com/hashicorp/terraform/helper/schema"
     5  )
     6  
     7  // ForceNewIf returns a CustomizeDiffFunc that flags the given key as
     8  // requiring a new resource if the given condition function returns true.
     9  //
    10  // The return value of the condition function is ignored if the old and new
    11  // values of the field compare equal, since no attribute diff is generated in
    12  // that case.
    13  func ForceNewIf(key string, f ResourceConditionFunc) schema.CustomizeDiffFunc {
    14  	return func(d *schema.ResourceDiff, meta interface{}) error {
    15  		if f(d, meta) {
    16  			d.ForceNew(key)
    17  		}
    18  		return nil
    19  	}
    20  }
    21  
    22  // ForceNewIfChange returns a CustomizeDiffFunc that flags the given key as
    23  // requiring a new resource if the given condition function returns true.
    24  //
    25  // The return value of the condition function is ignored if the old and new
    26  // values compare equal, since no attribute diff is generated in that case.
    27  //
    28  // This function is similar to ForceNewIf but provides the condition function
    29  // only the old and new values of the given key, which leads to more compact
    30  // and explicit code in the common case where the decision can be made with
    31  // only the specific field value.
    32  func ForceNewIfChange(key string, f ValueChangeConditionFunc) schema.CustomizeDiffFunc {
    33  	return func(d *schema.ResourceDiff, meta interface{}) error {
    34  		old, new := d.GetChange(key)
    35  		if f(old, new, meta) {
    36  			d.ForceNew(key)
    37  		}
    38  		return nil
    39  	}
    40  }