feat(ECS): enable selection of listener rules

pkg/app/piped/executor/ecs/ecs.go

@@ -451,6 +451,19 @@ func routing(ctx context.Context, in *executor.Input, platformProviderName strin
 		return false
 	}
 
+	currListenerRuleArns, err := client.GetListenerRuleArns(ctx, currListenerArns)
+	if err != nil {
+		in.LogPersister.Errorf("Failed to get current active listener rule: %v", err)
+		return false
+	}
+
+	if len(currListenerRuleArns) > 0 {
+		if err := client.ModifyRules(ctx, currListenerRuleArns, routingTrafficCfg); err != nil {
+			in.LogPersister.Errorf("Failed to routing traffic to PRIMARY/CANARY variants: %v", err)
+			return false
+		}
+	}
+
 	if err := client.ModifyListeners(ctx, currListenerArns, routingTrafficCfg); err != nil {
 		in.LogPersister.Errorf("Failed to routing traffic to PRIMARY/CANARY variants: %v", err)
 		return false

pkg/app/piped/executor/ecs/rollback.go

@@ -158,8 +158,23 @@ func rollback(ctx context.Context, in *executor.Input, platformProviderName stri
 			return false
 		}
 
+		currListenerRuleArns, err := client.GetListenerRuleArns(ctx, currListenerArns)
+		if err != nil {
+			in.LogPersister.Errorf("Failed to get current active listener rule: %v", err)
+			return false
+		}
+
+		if len(currListenerRuleArns) > 0 {
+			if err := client.ModifyRules(ctx, currListenerRuleArns, routingTrafficCfg); err != nil {
+				in.LogPersister.Errorf("Failed to routing traffic to PRIMARY/CANARY variants: %v", err)
+				return false
+			}
+
+			return true
+		}
+
 		if err := client.ModifyListeners(ctx, currListenerArns, routingTrafficCfg); err != nil {
-			in.LogPersister.Errorf("Failed to routing traffic to PRIMARY variant: %v", err)
+			in.LogPersister.Errorf("Failed to routing traffic to PRIMARY/CANARY variants: %v", err)
 			return false
 		}
 	}

pkg/app/piped/platformprovider/ecs/client.go

@@ -417,6 +417,30 @@
 	return arns, nil
 }
 
+func (c *client) GetListenerRuleArns(ctx context.Context, listenerArns []string) ([]string, error) {
+	var ruleArns []string
+
+	// Fetch all rules by listeners
+	for _, listenerArn := range listenerArns {
+		input := &elasticloadbalancingv2.DescribeRulesInput{
+			ListenerArn: aws.String(listenerArn),
+		}
+		output, err := c.elbClient.DescribeRules(ctx, input)
+		if err != nil {
+			return nil, err
+		}
+		for _, rule := range output.Rules {
+			ruleArns = append(ruleArns, *rule.RuleArn)
+		}
+	}
+
+	if len(ruleArns) == 0 {
+		return nil, platformprovider.ErrNotFound
+	}
+
+	return ruleArns, nil
+}
+
 func (c *client) getLoadBalancerArn(ctx context.Context, targetGroupArn string) (string, error) {
 	input := &elasticloadbalancingv2.DescribeTargetGroupsInput{
 		TargetGroupArns: []string{targetGroupArn},
@@ -470,6 +494,68 @@
 	return nil
 }
 
+func (c *client) ModifyRules(ctx context.Context, listenerRuleArns []string, routingTrafficCfg RoutingTrafficConfig) error {
+	if len(routingTrafficCfg) != 2 {
+		return fmt.Errorf("invalid listener configuration: requires 2 target groups")
+	}
+
+	modifyListenerRule := func(ctx context.Context, listenerRuleArn string) error {
+		input := &elasticloadbalancingv2.ModifyRuleInput{
+			RuleArn: aws.String(listenerRuleArn),
+			Actions: []elbtypes.Action{
+				{
+					Type: elbtypes.ActionTypeEnumForward,
+					ForwardConfig: &elbtypes.ForwardActionConfig{
+						TargetGroups: []elbtypes.TargetGroupTuple{
+							{
+								TargetGroupArn: aws.String(routingTrafficCfg[0].TargetGroupArn),
+								Weight:         aws.Int32(int32(routingTrafficCfg[0].Weight)),
+							},
+							{
+								TargetGroupArn: aws.String(routingTrafficCfg[1].TargetGroupArn),
+								Weight:         aws.Int32(int32(routingTrafficCfg[1].Weight)),
+							},
+						},
+					},
+				},
+			},
+		}
+		_, err := c.elbClient.ModifyRule(ctx, input)
+		return err
+	}
+
+	for _, ruleArn := range listenerRuleArns {
+		// Describe the rule to get current actions
+		describeRulesOutput, err := c.elbClient.DescribeRules(ctx, &elasticloadbalancingv2.DescribeRulesInput{
+			RuleArns: []string{ruleArn},
+		})
+		if err != nil {
+			return fmt.Errorf("error describing listener rule %v: %w", ruleArn, err)
+		}
+
+		// No rules found, nothing to modify
+		if len(describeRulesOutput.Rules) == 0 {
+			return fmt.Errorf("no rules found for ARN: %s", ruleArn)
+		}
+
+		// Check if the current action type is forward
+		for _, rule := range describeRulesOutput.Rules {
+			for _, action := range rule.Actions {
+				if action.Type == elbtypes.ActionTypeEnumForward {
+					// Call modifyListenerRule only if action type is forward
+					if err := modifyListenerRule(ctx, ruleArn); err != nil {
+						return err
+					}
+					// Break the loop once the modify function is called for the rule
+					break
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
 func (c *client) TagResource(ctx context.Context, resourceArn string, tags []types.Tag) error {
 	input := &ecs.TagResourceInput{
 		ResourceArn: aws.String(resourceArn),

pkg/app/piped/platformprovider/ecs/ecs.go

@@ -57,7 +57,9 @@ type ECS interface {
 
 type ELB interface {
 	GetListenerArns(ctx context.Context, targetGroup types.LoadBalancer) ([]string, error)
+	GetListenerRuleArns(ctx context.Context, listenerArns []string) ([]string, error)
 	ModifyListeners(ctx context.Context, listenerArns []string, routingTrafficCfg RoutingTrafficConfig) error
+	ModifyRules(ctx context.Context, listenerRuleArns []string, routingTrafficCfg RoutingTrafficConfig) error
 }
 
 // Registry holds a pool of aws client wrappers.