winterbaume-elasticloadbalancingv2

Elastic Load Balancing v2 service implementation for winterbaume.

Coverage

Metric	Value
Service	ELBv2
AWS model	elastic-load-balancing-v2
Protocol	awsQuery
winterbaume coverage	50/51 operations (98.0%)
stubs (routed, returns empty/default)	1/51 operations (2.0%)
moto coverage	33/51 operations (64.7%)
floci coverage	0/51 operations (0.0%)
kumo coverage	22/51 operations (43.1%)
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 elbv2 describe-load-balancers

Current Network Resource Stub Semantics

ELBv2 currently synthesises load balancer networking unless later mutation calls overwrite it.

• CreateLoadBalancer ignores the real EC2 topology and creates local load balancer records with default placeholder VPC, subnet, and security group values such as vpc-12345678, subnet-aaaa1111, and sg-12345678.
• CreateTargetGroup stores the supplied VPC ID when present and otherwise defaults to the same placeholder VPC ID.
• SetSubnets replaces the stored subnet or subnet-mapping list and synthesises availability-zone records from the supplied order; SetSecurityGroups replaces the stored security group list.
• 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_elasticloadbalancingv2::config::BehaviorVersion;
use winterbaume_core::MockAws;
use winterbaume_elasticloadbalancingv2::ElasticLoadBalancingV2Service;

#[tokio::main]
async fn main() {
    let mock = MockAws::builder()
        .with_service(ElasticLoadBalancingV2Service::new())
        .build();

    let config = aws_config::defaults(BehaviorVersion::latest())
        .http_client(mock.http_client())
        .credentials_provider(mock.credentials_provider())
        .region(aws_sdk_elasticloadbalancingv2::config::Region::new(
            "us-east-1",
        ))
        .load()
        .await;

    let client = aws_sdk_elasticloadbalancingv2::Client::new(&config);

    let resp = client
        .describe_load_balancers()
        .send()
        .await
        .expect("describe_load_balancers should succeed");
    println!("Load balancers: {}", resp.load_balancers().len());
}

Implemented APIs (50)

• AddListenerCertificates
• AddTags
• AddTrustStoreRevocations
• CreateListener
• CreateLoadBalancer
• CreateRule
• CreateTargetGroup
• CreateTrustStore
• DeleteListener
• DeleteLoadBalancer
• DeleteRule
• DeleteSharedTrustStoreAssociation
• DeleteTargetGroup
• DeleteTrustStore
• DeregisterTargets
• DescribeCapacityReservation
• DescribeListenerAttributes
• DescribeListenerCertificates
• DescribeListeners
• DescribeLoadBalancerAttributes
• DescribeLoadBalancers
• DescribeRules
• DescribeSSLPolicies
• DescribeTags
• DescribeTargetGroupAttributes
• DescribeTargetGroups
• DescribeTargetHealth
• DescribeTrustStoreAssociations
• DescribeTrustStoreRevocations
• DescribeTrustStores
• GetResourcePolicy
• GetTrustStoreCaCertificatesBundle
• GetTrustStoreRevocationContent
• ModifyCapacityReservation
• ModifyIpPools
• ModifyListener
• ModifyListenerAttributes
• ModifyLoadBalancerAttributes
• ModifyRule
• ModifyTargetGroup
• ModifyTargetGroupAttributes
• ModifyTrustStore
• RegisterTargets
• RemoveListenerCertificates
• RemoveTags
• RemoveTrustStoreRevocations
• SetIpAddressType
• SetRulePriorities
• SetSecurityGroups
• SetSubnets

Stubbed APIs (1) — routed but return an empty/default response

• DescribeAccountLimits