93 lines
2.2 KiB
Go
93 lines
2.2 KiB
Go
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package interfaces
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import (
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"context"
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"time"
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)
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// Event 事件接口
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type Event interface {
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// 事件基础信息
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GetID() string
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GetType() string
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GetVersion() string
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GetTimestamp() time.Time
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// 事件数据
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GetPayload() interface{}
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GetMetadata() map[string]interface{}
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// 事件来源
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GetSource() string
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GetAggregateID() string
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GetAggregateType() string
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// 序列化
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Marshal() ([]byte, error)
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Unmarshal(data []byte) error
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}
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// EventHandler 事件处理器接口
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type EventHandler interface {
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// 处理器标识
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GetName() string
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GetEventTypes() []string
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// 事件处理
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Handle(ctx context.Context, event Event) error
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// 处理器配置
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IsAsync() bool
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GetRetryConfig() RetryConfig
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}
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// DomainEvent 领域事件基础接口
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type DomainEvent interface {
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Event
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// 领域特定信息
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GetDomainVersion() string
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GetCausationID() string
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GetCorrelationID() string
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}
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// RetryConfig 重试配置
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type RetryConfig struct {
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MaxRetries int `json:"max_retries"`
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RetryDelay time.Duration `json:"retry_delay"`
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BackoffFactor float64 `json:"backoff_factor"`
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MaxDelay time.Duration `json:"max_delay"`
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}
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// EventStore 事件存储接口
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type EventStore interface {
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// 事件存储
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SaveEvent(ctx context.Context, event Event) error
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SaveEvents(ctx context.Context, events []Event) error
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// 事件查询
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GetEvents(ctx context.Context, aggregateID string, fromVersion int) ([]Event, error)
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GetEventsByType(ctx context.Context, eventType string, limit int) ([]Event, error)
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GetEventsSince(ctx context.Context, timestamp time.Time, limit int) ([]Event, error)
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// 快照支持
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SaveSnapshot(ctx context.Context, aggregateID string, snapshot interface{}) error
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GetSnapshot(ctx context.Context, aggregateID string) (interface{}, error)
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}
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// EventBus 事件总线接口
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type EventBus interface {
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// 事件发布
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Publish(ctx context.Context, event Event) error
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PublishBatch(ctx context.Context, events []Event) error
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// 事件订阅
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Subscribe(eventType string, handler EventHandler) error
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Unsubscribe(eventType string, handler EventHandler) error
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// 订阅管理
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GetSubscribers(eventType string) []EventHandler
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Start(ctx context.Context) error
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Stop(ctx context.Context) error
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}
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