Hugo Nijhuis
e9e50c021f
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Distributed actor system with event sourcing for Go: - event.go - Event, ActorSnapshot, EventStore interface - eventbus.go - EventBus, EventBroadcaster for pub/sub - nats_eventbus.go - NATS-backed cross-node event broadcasting - store/ - InMemoryEventStore (testing), JetStreamEventStore (production) - cluster/ - Node discovery, leader election, shard distribution - model/ - EventStorming model types Extracted from arcadia as open-source infrastructure component. Co-Authored-By: Claude <noreply@anthropic.com>
39 lines
1.2 KiB
Go
39 lines
1.2 KiB
Go
package aether
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import (
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"time"
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)
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// Event represents a domain event in the system
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type Event struct {
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ID string `json:"id"`
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EventType string `json:"eventType"`
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ActorID string `json:"actorId"`
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CommandID string `json:"commandId,omitempty"` // Correlation ID for command that triggered this event
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Version int64 `json:"version"`
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Data map[string]interface{} `json:"data"`
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Timestamp time.Time `json:"timestamp"`
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}
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// ActorSnapshot represents a point-in-time state snapshot
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type ActorSnapshot struct {
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ActorID string `json:"actorId"`
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Version int64 `json:"version"`
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State map[string]interface{} `json:"state"`
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Timestamp time.Time `json:"timestamp"`
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}
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// EventStore defines the interface for event persistence
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type EventStore interface {
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SaveEvent(event *Event) error
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GetEvents(actorID string, fromVersion int64) ([]*Event, error)
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GetLatestVersion(actorID string) (int64, error)
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}
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// SnapshotStore extends EventStore with snapshot capabilities
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type SnapshotStore interface {
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EventStore
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GetLatestSnapshot(actorID string) (*ActorSnapshot, error)
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SaveSnapshot(snapshot *ActorSnapshot) error
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}
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