winterbaume-elasticloadbalancing

Classic Elastic Load Balancing service implementation for winterbaume.

Coverage

Metric	Value
Service	ELB
AWS model	elastic-load-balancing
Protocol	awsQuery
winterbaume coverage	29/29 operations (100.0%)
stubs (routed, returns empty/default)	0/29 operations (0.0%)
moto coverage	21/29 operations (72.4%)
floci coverage	0/29 operations (0.0%)
kumo coverage	0/29 operations (0.0%)
Coverage report date	2026-05-13

Server-mode usage

Start winterbaume-server and point the AWS CLI at it:

cargo run -p winterbaume-server -- --host 127.0.0.1 --port 5555

export AWS_ENDPOINT_URL=http://localhost:5555
aws elb describe-load-balancers

Current Network Resource Stub Semantics

Classic ELB currently stores subnet and security group attachments on the load balancer record.

• CreateLoadBalancer records supplied subnets and security groups when present and otherwise uses local defaults.
• AttachLoadBalancerToSubnets appends requested subnet IDs to the stored list, DetachLoadBalancerFromSubnets removes them, and ApplySecurityGroupsToLoadBalancer replaces the stored security group list.
• Source security group and VPC fields are response metadata derived by the ELB crate, not from EC2 security group ownership.
• The implementation does not consult winterbaume-ec2 state for these identifiers, so it does not check that referenced VPCs, subnets, security groups, VPC endpoints, network interfaces, or load balancers exist, belong to the same VPC, or are in a usable lifecycle state.

Example

use aws_sdk_elasticloadbalancing::config::BehaviorVersion;
use aws_sdk_elasticloadbalancing::types::Listener;
use winterbaume_core::MockAws;
use winterbaume_elasticloadbalancing::ElasticLoadBalancingService;

#[tokio::main]
async fn main() {
    let mock = MockAws::builder()
        .with_service(ElasticLoadBalancingService::new())
        .build();

    let config = aws_config::defaults(BehaviorVersion::latest())
        .http_client(mock.http_client())
        .credentials_provider(mock.credentials_provider())
        .region(aws_sdk_elasticloadbalancing::config::Region::new(
            "us-east-1",
        ))
        .load()
        .await;

    let client = aws_sdk_elasticloadbalancing::Client::new(&config);

    // Create a classic load balancer
    let create_resp = client
        .create_load_balancer()
        .load_balancer_name("my-classic-lb")
        .availability_zones("us-east-1a")
        .listeners(
            Listener::builder()
                .protocol("HTTP")
                .load_balancer_port(80)
                .instance_port(8080)
                .build()
                .unwrap(),
        )
        .send()
        .await
        .expect("create_load_balancer should succeed");

    println!(
        "Created load balancer with DNS: {:?}",
        create_resp.dns_name()
    );

    // Describe all load balancers
    let resp = client
        .describe_load_balancers()
        .send()
        .await
        .expect("describe_load_balancers should succeed");

    println!(
        "Classic ELB load balancers: {:?}",
        resp.load_balancer_descriptions()
    );
}

Implemented APIs (29)

• AddTags
• ApplySecurityGroupsToLoadBalancer
• AttachLoadBalancerToSubnets
• ConfigureHealthCheck
• CreateAppCookieStickinessPolicy
• CreateLBCookieStickinessPolicy
• CreateLoadBalancer
• CreateLoadBalancerListeners
• CreateLoadBalancerPolicy
• DeleteLoadBalancer
• DeleteLoadBalancerListeners
• DeleteLoadBalancerPolicy
• DeregisterInstancesFromLoadBalancer
• DescribeAccountLimits
• DescribeInstanceHealth
• DescribeLoadBalancerAttributes
• DescribeLoadBalancerPolicies
• DescribeLoadBalancerPolicyTypes
• DescribeLoadBalancers
• DescribeTags
• DetachLoadBalancerFromSubnets
• DisableAvailabilityZonesForLoadBalancer
• EnableAvailabilityZonesForLoadBalancer
• ModifyLoadBalancerAttributes
• RegisterInstancesWithLoadBalancer
• RemoveTags
• SetLoadBalancerListenerSSLCertificate
• SetLoadBalancerPoliciesForBackendServer
• SetLoadBalancerPoliciesOfListener