Update appsec metrics with event_rules_version tag (#8354)

* Update metrics for java: appsec.rasp.rule.eval, appsec.rasp.rule.match and appsec.rasp.timeout (event_rules_version tag)

Author: sezen-datadog

internal-api/src/main/java/datadog/trace/api/telemetry/WafMetricCollector.java

@@ -328,7 +328,8 @@ public RaspRuleEval(final long counter, final RuleType ruleType, final String wa
               ? new String[] {
                 "rule_type:" + ruleType.type,
                 "rule_variant:" + ruleType.variant,
-                "waf_version:" + wafVersion
+                "waf_version:" + wafVersion,
+                "event_rules_version:" + rulesVersion
               }
               : new String[] {"rule_type:" + ruleType.type, "waf_version:" + wafVersion});
     }
@@ -343,7 +344,8 @@ public RaspRuleMatch(final long counter, final RuleType ruleType, final String w
               ? new String[] {
                 "rule_type:" + ruleType.type,
                 "rule_variant:" + ruleType.variant,
-                "waf_version:" + wafVersion
+                "waf_version:" + wafVersion,
+                "event_rules_version:" + rulesVersion
               }
               : new String[] {"rule_type:" + ruleType.type, "waf_version:" + wafVersion});
     }
@@ -358,7 +360,8 @@ public RaspTimeout(final long counter, final RuleType ruleType, final String waf
               ? new String[] {
                 "rule_type:" + ruleType.type,
                 "rule_variant:" + ruleType.variant,
-                "waf_version:" + wafVersion
+                "waf_version:" + wafVersion,
+                "event_rules_version:" + rulesVersion
               }
               : new String[] {"rule_type:" + ruleType.type, "waf_version:" + wafVersion});
     }

internal-api/src/test/groovy/datadog/trace/api/telemetry/WafMetricCollectorTest.groovy

@@ -314,21 +314,36 @@ class WafMetricCollectorTest extends DDSpecification {
     raspRuleEval.value == 3
     raspRuleEval.namespace == 'appsec'
     raspRuleEval.metricName == 'rasp.rule.eval'
-    raspRuleEval.tags.toSet() == ['rule_type:command_injection', 'rule_variant:'+ruleType.variant, 'waf_version:waf_ver1'].toSet()
+    raspRuleEval.tags.toSet() == [
+      'rule_type:command_injection',
+      'rule_variant:'+ruleType.variant,
+      'waf_version:waf_ver1',
+      'event_rules_version:rules.1'
+    ].toSet()
 
     def raspRuleMatch = (WafMetricCollector.RaspRuleMatch)metrics[2]
     raspRuleMatch.type == 'count'
     raspRuleMatch.value == 1
     raspRuleMatch.namespace == 'appsec'
     raspRuleMatch.metricName == 'rasp.rule.match'
-    raspRuleMatch.tags.toSet() == ['rule_type:command_injection', 'rule_variant:'+ruleType.variant, 'waf_version:waf_ver1'].toSet()
+    raspRuleMatch.tags.toSet() == [
+      'rule_type:command_injection',
+      'rule_variant:'+ruleType.variant,
+      'waf_version:waf_ver1',
+      'event_rules_version:rules.1'
+    ].toSet()
 
     def raspTimeout = (WafMetricCollector.RaspTimeout)metrics[3]
     raspTimeout.type == 'count'
     raspTimeout.value == 1
     raspTimeout.namespace == 'appsec'
     raspTimeout.metricName == 'rasp.timeout'
-    raspTimeout.tags.toSet() == ['rule_type:command_injection', 'rule_variant:'+ruleType.variant, 'waf_version:waf_ver1'].toSet()
+    raspTimeout.tags.toSet() == [
+      'rule_type:command_injection',
+      'rule_variant:'+ruleType.variant,
+      'waf_version:waf_ver1',
+      'event_rules_version:rules.1'
+    ].toSet()
 
     where:
     ruleType << [RuleType.COMMAND_INJECTION, RuleType.SHELL_INJECTION]