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self_link_helpers.go
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self_link_helpers.go
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package google
import (
"fmt"
"regexp"
"strings"
"github.com/hashicorp/terraform/helper/hashcode"
"github.com/hashicorp/terraform/helper/schema"
)
// Compare only the relative path of two self links.
func compareSelfLinkRelativePaths(k, old, new string, d *schema.ResourceData) bool {
oldStripped, err := getRelativePath(old)
if err != nil {
return false
}
newStripped, err := getRelativePath(new)
if err != nil {
return false
}
if oldStripped == newStripped {
return true
}
return false
}
// Use this method when the field accepts either a name or a self_link referencing a resource.
// The value we store (i.e. `old` in this method), must be a self_link.
func compareSelfLinkOrResourceName(k, old, new string, d *schema.ResourceData) bool {
oldParts := strings.Split(old, "/") // always a self_link
newParts := strings.Split(new, "/")
if len(newParts) == 1 {
// The `new` string is a name
if oldParts[len(oldParts)-1] == newParts[0] {
return true
}
}
// The `new` string is a self_link
return compareSelfLinkRelativePaths(k, old, new, d)
}
// Hash the relative path of a self link.
func selfLinkRelativePathHash(selfLink interface{}) int {
path, _ := getRelativePath(selfLink.(string))
return hashcode.String(path)
}
func getRelativePath(selfLink string) (string, error) {
stringParts := strings.SplitAfterN(selfLink, "projects/", 2)
if len(stringParts) != 2 {
return "", fmt.Errorf("String was not a self link: %s", selfLink)
}
return "projects/" + stringParts[1], nil
}
func ConvertSelfLinkToV1(link string) string {
reg := regexp.MustCompile("/compute/[a-zA-Z0-9]*/projects/")
return reg.ReplaceAllString(link, "/compute/v1/projects/")
}
func GetResourceNameFromSelfLink(link string) string {
parts := strings.Split(link, "/")
return parts[len(parts)-1]
}
func StoreResourceName(resourceLink interface{}) string {
return GetResourceNameFromSelfLink(resourceLink.(string))
}