Could not create ALB + ECS(Fargate) with aws-cdk

[inoutch]

I couldn't create application load balancer (alb) with fargate by aws-cdk, because default target type value of alb target group is instance.

To use fargate, I needs setting network mode to awsvpc, and setting target type to ip in target group. However, the aws-cdk implementation sets instance type as default, and no way to replace it after instancing alb target group.

To be accurate, I can change the target group type by adding any targets, however fargate is not neccesary to add ip targets manually, and I don't want to do it.

instancing target group and default type is TargetType.Ip:

new elb.ApplicationTargetGroup(this, "TargetGroup", { vpc }); // default targetType = TargeType.Instance

aws-elasticloadbalancingv2/lib/shared/base-target-group.js:

addLoadBalancerTarget(props) {
    if (this.targetType !== undefined && this.targetType !== props.targetType) {
        throw new Error(`Already have a of type '${this.targetType}', adding '${props.targetType}'; make all targets the same type.`);
    }
    // [[[CAN CHANGE TARGET TYPE ONLY HERE!]]]
    this.targetType = props.targetType;
    if (props.targetJson) {
        this.targetsJson.push(props.targetJson);
    }
}

Is there a way to solve this problem? (I am sorry if there is any mistake.)

[rix0rrr]

Just got fixed here: #890

Also, we're working on ECS constructs right now. Stay tuned for more goodness on that front.

[inoutch]

Thank you for your quick replying.
I am looking forward to update about them!