Add RETENTION_DAYS and EXTERNAL_MONITOR support for server audit

- Add RetentionDaysAuditTargetOption AST type
- Fix EXTERNAL_MONITOR target kind to return "ExternalMonitor"
- Add URL target kind support

Author: claude

ast/server_audit_statement.go

@@ -79,6 +79,14 @@ type OnOffAuditTargetOption struct {
 
 func (o *OnOffAuditTargetOption) auditTargetOption() {}
 
+// RetentionDaysAuditTargetOption represents the RETENTION_DAYS option
+type RetentionDaysAuditTargetOption struct {
+	OptionKind string
+	Days       ScalarExpression
+}
+
+func (o *RetentionDaysAuditTargetOption) auditTargetOption() {}
+
 // AuditOption is an interface for audit options
 type AuditOption interface {
 	auditOption()

parser/marshal.go

@@ -8564,6 +8564,15 @@ func auditTargetOptionToJSON(o ast.AuditTargetOption) jsonNode {
 			"Value":      opt.Value,
 			"OptionKind": opt.OptionKind,
 		}
+	case *ast.RetentionDaysAuditTargetOption:
+		node := jsonNode{
+			"$type":      "RetentionDaysAuditTargetOption",
+			"OptionKind": opt.OptionKind,
+		}
+		if opt.Days != nil {
+			node["Days"] = scalarExpressionToJSON(opt.Days)
+		}
+		return node
 	default:
 		return jsonNode{"$type": "UnknownAuditTargetOption"}
 	}

parser/parse_statements.go

@@ -3617,14 +3617,18 @@ func convertAuditGroupName(name string) string {
 func (p *Parser) parseAuditTarget() (*ast.AuditTarget, error) {
 	target := &ast.AuditTarget{}
 
-	// Parse target kind (FILE, APPLICATION_LOG, SECURITY_LOG)
+	// Parse target kind (FILE, APPLICATION_LOG, SECURITY_LOG, URL, EXTERNAL_MONITOR)
 	switch strings.ToUpper(p.curTok.Literal) {
 	case "FILE":
 		target.TargetKind = "File"
 	case "APPLICATION_LOG":
 		target.TargetKind = "ApplicationLog"
 	case "SECURITY_LOG":
 		target.TargetKind = "SecurityLog"
+	case "URL":
+		target.TargetKind = "Url"
+	case "EXTERNAL_MONITOR":
+		target.TargetKind = "ExternalMonitor"
 	default:
 		target.TargetKind = capitalizeFirst(p.curTok.Literal)
 	}
@@ -3726,6 +3730,17 @@ func (p *Parser) parseAuditTargetOption() (ast.AuditTargetOption, error) {
 			Value:      value,
 		}, nil
 
+	case "RETENTION_DAYS":
+		// Parse the number of days
+		days, err := p.parseScalarExpression()
+		if err != nil {
+			return nil, err
+		}
+		return &ast.RetentionDaysAuditTargetOption{
+			OptionKind: "RetentionDays",
+			Days:       days,
+		}, nil
+
 	default:
 		// Parse literal value (FILEPATH, etc.)
 		val, err := p.parseScalarExpression()

parser/testdata/Baselines150_ServerAuditStatementTests150/metadata.json

@@ -1 +1 @@
-{"todo": true}
+{}

parser/testdata/ServerAuditStatementTests150/metadata.json

@@ -1 +1 @@
-{"todo": true}
+{}