- Replace non-deterministic map range fallback with sorted node selection in PlaceActor and RebalanceShards
- Add Body field to MessagePayload to preserve message data during cross-node routing
- Forward actual message body in route_message handler instead of discarding it
- Add self-message guard to route_message handler to prevent loops
- Add nil guard for shardMap in handleRebalanceRequest
- Add self-message guard to handleRebalanceRequest in DistributedVM
- Fix ConsistentHashPlacement.PlaceActor() to use consistent hash ring
- Implement ConsistentHashPlacement.RebalanceShards() to redistribute shards
- Implement ClusterManager.handleRebalanceRequest() with actual rebalancing
- Implement ClusterManager.handleMigrationRequest() for actor state transfer
- Implement ClusterManager.triggerShardRebalancing() to compute and broadcast
- Implement DistributedVM.SendMessage() with cross-node NATS routing
- Implement DistributedVM.handleRebalanceRequest() to update shard map
- Fix route_message handler to check if actor is local before delivery
- Update ConsistentHashPlacement.RebalanceShards() test for new behavior
- Add handleShardMapUpdate() and broadcastShardMap() to ClusterManager
JSON unmarshal produces map[string]interface{}, not concrete types.
Added ModelPayload and MessagePayload concrete types that implement
RuntimeModel and RuntimeMessage interfaces respectively.
The handleClusterMessage now re-marshals and unmarshals the payload
to convert from map[string]interface{} to the proper concrete type.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add VirtualMachine interface with GetID(), GetActorID(), GetState()
- Add VMState type with idle/running/paused/stopped states
- Add RuntimeModel interface for event storming model contracts
- Add RuntimeMessage interface for actor message contracts
- Add VMProvider interface for decoupled VM access
- Update VMRegistry.GetActiveVMs() to return map[string]VirtualMachine
- Update Runtime interface to use RuntimeModel and RuntimeMessage
- Update DistributedVMRegistry to use VMProvider instead of interface{}
- Add SetVMProvider method to DistributedVM for dependency injection
This improves type safety, makes contracts explicit, and enables better
IDE support while avoiding import cycles through interface segregation.
Closes#37
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add config structs with sensible defaults for tunable parameters:
- JetStreamConfig for stream retention (1 year) and replica count (1)
- HashRingConfig for virtual nodes per physical node (150)
- ShardConfig for shard count (1024) and replication factor (1)
Each component gets a new WithConfig constructor that accepts custom
configuration, while the original constructors continue to work with
defaults. Zero values in configs fall back to defaults for backward
compatibility.
Closes#38
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
HugoNijhuis
