winterbaume-memorydb

Amazon MemoryDB service implementation for winterbaume.

Coverage

Metric	Value
Service	MemoryDB
AWS model	memorydb
Protocol	awsJson1.1
winterbaume coverage	13/45 operations (28.9%)
stubs (routed, returns empty/default)	0/45 operations (0.0%)
moto coverage	13/45 operations (28.9%)
floci coverage	0/45 operations (0.0%)
kumo coverage	10/45 operations (22.2%)
fakecloud coverage	45/45 operations (100.0%)
Coverage report date	2026-07-03

Server-mode usage

Install winterbaume-server from crates.io or run it from a workspace checkout, then point the AWS CLI at it:

# Installed binary ( from crates.io ):
cargo install winterbaume-server
winterbaume-server --host 127.0.0.1 --port 5555

# Or, from a workspace checkout:
cargo run -p winterbaume-server -- --host 127.0.0.1 --port 5555

export AWS_ENDPOINT_URL=http://localhost:5555
aws memorydb describe-clusters

Current Network Resource Stub Semantics

MemoryDB currently models subnet groups and security groups inside MemoryDB state.

• CreateSubnetGroup stores supplied subnet IDs and mints a synthetic VPC ID from the generated resource identifier rather than deriving it from EC2.
• Clusters store the selected subnet group name and supplied security group IDs as raw strings.
• Subnet group deletion checks local MemoryDB cluster references, but not EC2 subnet or security group state.
• 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_memorydb::config::BehaviorVersion;
use winterbaume_core::MockAws;
use winterbaume_memorydb::MemoryDbService;

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

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

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

    let resp = client
        .describe_clusters()
        .send()
        .await
        .expect("describe_clusters should succeed");
    println!("MemoryDB clusters: {}", resp.clusters().len());
}

Implemented APIs (13)

• CreateCluster
• CreateSnapshot
• CreateSubnetGroup
• DeleteCluster
• DeleteSnapshot
• DeleteSubnetGroup
• DescribeClusters
• DescribeSnapshots
• DescribeSubnetGroups
• ListTags
• TagResource
• UntagResource
• UpdateCluster

Not yet implemented APIs (32)

• BatchUpdateCluster (implemented by fakecloud)
• CopySnapshot (implemented by fakecloud)
• CreateACL (implemented by kumo, fakecloud)
• CreateMultiRegionCluster (implemented by fakecloud)
• CreateParameterGroup (implemented by fakecloud)
• CreateUser (implemented by kumo, fakecloud)
• DeleteACL (implemented by kumo, fakecloud)
• DeleteMultiRegionCluster (implemented by fakecloud)
• DeleteParameterGroup (implemented by fakecloud)
• DeleteUser (implemented by kumo, fakecloud)
• DescribeACLs (implemented by kumo, fakecloud)
• DescribeEngineVersions (implemented by fakecloud)
• DescribeEvents (implemented by fakecloud)
• DescribeMultiRegionClusters (implemented by fakecloud)
• DescribeMultiRegionParameterGroups (implemented by fakecloud)
• DescribeMultiRegionParameters (implemented by fakecloud)
• DescribeParameterGroups (implemented by fakecloud)
• DescribeParameters (implemented by fakecloud)
• DescribeReservedNodes (implemented by fakecloud)
• DescribeReservedNodesOfferings (implemented by fakecloud)
• DescribeServiceUpdates (implemented by fakecloud)
• DescribeUsers (implemented by kumo, fakecloud)
• FailoverShard (implemented by fakecloud)
• ListAllowedMultiRegionClusterUpdates (implemented by fakecloud)
• ListAllowedNodeTypeUpdates (implemented by fakecloud)
• PurchaseReservedNodesOffering (implemented by fakecloud)
• ResetParameterGroup (implemented by fakecloud)
• UpdateACL (implemented by fakecloud)
• UpdateMultiRegionCluster (implemented by fakecloud)
• UpdateParameterGroup (implemented by fakecloud)
• UpdateSubnetGroup (implemented by fakecloud)
• UpdateUser (implemented by fakecloud)