portMappings

public attachTarget(name: string, args: mod.LoadBalancerTarget, opts: pulumi.CustomResourceOptions = {}) {
        return new mod.TargetGroupAttachment(name, this, args, opts);
    }

listener.defaultTargetGroup

// listen for https traffic. by default returns 404, will have rules added to forward to the requisite groups
const listener = alb.createListener("http-traffic", {
    port: 80,
    protocol: "HTTP",
    external: true,
    defaultAction: {
        type: "fixed-response",
        fixedResponse: {
            contentType: "text/plain",
            statusCode: "404"
        }
    },
});

/// this listener forwards all traffic to the identity server
listener.addListenerRule("plain-traffic-to-server", {
    priority: 49999, // priority goes from 1 to 50000 with lower numbers going first, so this makes the rule always eval last
    conditions: [{ httpRequestMethod: { values: ["GET", "PUT", "POST", "HEAD", "OPTIONS"] } } as aws.types.output.lb.ListenerRuleCondition], // all HTTP methods
    actions: [
        {
            type: "forward",
            targetGroupArn: tg.targetGroup.arn // targetgroups in pulumi have a 'targetGroup' property with the arn on it
        }
    ]
});