Module tenant 

Tenant-scoped task store implementations.

Provides TenantContext for threading tenant identity through store operations and TenantAwareInMemoryTaskStore for full tenant isolation without changing the TaskStore trait signature.

Architecture

The A2A TaskStore trait doesn’t accept a tenant parameter — tenant identity flows through request params at the handler level. To achieve tenant isolation without a breaking trait change, we use tokio::task_local! to propagate the current tenant ID into store operations.

The handler sets the tenant context before calling store methods:

use a2a_protocol_server::store::tenant::TenantContext;

let tenant = "acme-corp";
TenantContext::scope(tenant, async {
    // All store operations here are scoped to "acme-corp"
    // store.save(task).await;
}).await;

Isolation guarantees

• Each tenant’s tasks live in a separate InMemoryTaskStore instance
• Tenant A cannot read, list, or delete tenant B’s tasks
• Per-tenant eviction configuration is supported
• Operations without a tenant context use the "" (default) partition

Structs

TenantAwareInMemoryTaskStore

Tenant-isolated in-memory TaskStore.

TenantContext

Thread-safe tenant context for scoping store operations.

TenantStoreConfig

Configuration for TenantAwareInMemoryTaskStore.