Merge pull request #638 from SumoLogic/SUMO-237992

SUMO-237992: Fix perpetual diff in Extraction Rules by normalizing the parse expression

Author: chetankme

CHANGELOG.md

@@ -5,6 +5,7 @@ ENHANCEMENTS:
 
 BUG FIXES:
 * Fix error while importing monitor having timeZone as `null` in the Email notification object. (GH-637)
+* Fix perpetual diff in Extraction Rules by normalizing the parse expression.  
 
 ## 2.28.3 (March 5, 2024)
 

sumologic/resource_sumologic_extraction_rule.go

@@ -41,10 +41,12 @@ func resourceSumologicFieldExtractionRule() *schema.Resource {
 				Type:     schema.TypeString,
 				Required: true,
 				DiffSuppressFunc: func(k, old, new string, d *schema.ResourceData) bool {
-					if strings.Trim(old, "\n ") == strings.Trim(new, "\n ") {
-						return true
+					// Ignores leading spaces, leading newlines and single leading |
+					// Ignores trailing spaces and trailing newlines.
+					normalize := func(s string) string {
+						return strings.TrimSpace(strings.TrimPrefix(strings.Trim(s, "\n "), "|"))
 					}
-					return false
+					return normalize(old) == normalize(new)
 				},
 			},
 			"enabled": {