Allow the use of region selflinks in provider configs.

google/config.go

@@ -540,6 +540,7 @@ func (c *Config) LoadAndValidate() error {
 	c.clientStorageTransfer.UserAgent = userAgent
 	c.clientStorageTransfer.BasePath = storageTransferClientBasePath
 
+	c.Region = GetRegionFromRegionSelfLink(c.Region)
 	return nil
 }
 

google/iam.go

@@ -229,10 +229,7 @@ func mergeAuditConfigs(auditConfigs []*cloudresourcemanager.AuditConfig) []*clou
 // Flattens AuditConfigs so each role has a single Binding with combined members\
 func removeAllAuditConfigsWithService(ac []*cloudresourcemanager.AuditConfig, service string) []*cloudresourcemanager.AuditConfig {
 	acMap := createIamAuditConfigsMap(ac)
-	if _, ok := acMap[service]; ok {
-		delete(acMap, service)
-	}
-
+	delete(acMap, service)
 	return listFromIamAuditConfigMap(acMap)
 }
 

google/self_link_helpers.go

@@ -145,3 +145,15 @@ func GetLocationalResourcePropertiesFromSelfLinkString(selfLink string) (string,
 	s := strings.Split(parsed.Path, "/")
 	return s[4], s[6], s[8], nil
 }
+
+// return the region a selfLink is referring to
+func GetRegionFromRegionSelfLink(selfLink string) string {
+	re := regexp.MustCompile("/compute/[a-zA-Z0-9]*/projects/[a-zA-Z0-9-]*/regions/([a-zA-Z0-9-]*)")
+	switch {
+	case re.MatchString(selfLink):
+		if res := re.FindStringSubmatch(selfLink); len(res) == 2 && res[1] != "" {
+			return res[1]
+		}
+	}
+	return selfLink
+}

google/self_link_helpers_test.go

@@ -110,3 +110,15 @@ func TestSelfLinkNameHash(t *testing.T) {
 		}
 	}
 }
+
+func TestGetRegionFromRegionSelfLink(t *testing.T) {
+	cases := map[string]string{
+		"https://www.googleapis.com/compute/v1/projects/test/regions/europe-west3": "europe-west3",
+		"europe-west3": "europe-west3",
+	}
+	for input, expected := range cases {
+		if result := GetRegionFromRegionSelfLink(input); result != expected {
+			t.Errorf("expected to get %q from %q, got %q", expected, input, result)
+		}
+	}
+}