Document configuration changes

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Releases
 
+## 1.5.0 - XXX backend mode
+
+* Add `alertmanager` API, e.g. `/api/alertmanager/v2/status`
+* Add negative matchers: `!=` and `!~`
+* Breaking configuration changes:
+  * To be more compatible with `alertmanager`, the `~=` is now `=~`
+    using regular expression matching.
+
 ## v1.4 - 2024-01-11 light mode
 
 * Make the look of tuwat configurable via `style` property.

pkg/config/rule_matching.go

@@ -26,7 +26,7 @@ func ParseRuleMatcher(value string) RuleMatcher {
 		prefix := matches[1]
 		value := matches[2]
 		switch prefix {
-		case "=~":
+		case "=~", "~=":
 			return regexpMatcher{regexp.MustCompile(value)}
 		case "!~":
 			return not(regexpMatcher{regexp.MustCompile(value)})

pkg/config/rule_matching_test.go

@@ -18,7 +18,7 @@ func TestParseRuleMatcher(t *testing.T) {
 			want:  regexpMatcher{regexp.MustCompile("X")},
 		}, {
 			name:  "Regexp",
-			value: "~= X",
+			value: "=~ X",
 			want:  regexpMatcher{regexp.MustCompile("X")},
 		}, {
 			name:  "numeric equality matcher",
@@ -84,7 +84,7 @@ func TestRuleMatching(t *testing.T) {
 			want: true,
 		}, {
 			name: "regexp",
-			rule: "~= X",
+			rule: "=~ X",
 			str:  "Xavier",
 			want: true,
 		}, {
@@ -137,7 +137,7 @@ func TestRuleMatching(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			if got := ParseRuleMatcher(tt.rule); got.MatchString(tt.str) != tt.want {
-				t.Errorf("Matching %v ~= %v, want %v", tt.rule, tt.str, tt.want)
+				t.Errorf("Matching %v =~ %v, want %v", tt.rule, tt.str, tt.want)
 			}
 		})
 	}