41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
// package driver defines interfaces to be used by driver implementations.
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package driver
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import (
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"context"
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"go.sour.is/ev/pkg/event"
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)
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type Driver interface {
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Open(ctx context.Context, dsn string) (Driver, error)
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EventLog(ctx context.Context, streamID string) (EventLog, error)
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}
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type EventLog interface {
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Read(ctx context.Context, after, count int64) (event.Events, error)
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ReadN(ctx context.Context, index ...uint64) (event.Events, error)
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Append(ctx context.Context, events event.Events, version uint64) (uint64, error)
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FirstIndex(context.Context) (uint64, error)
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LastIndex(context.Context) (uint64, error)
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}
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type EventLogWithTruncate interface {
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Truncate(context.Context, int64) error
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}
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type EventLogWithUpdate interface {
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LoadForUpdate(context.Context, event.Aggregate, func(context.Context, event.Aggregate) error) (uint64, error)
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}
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type Subscription interface {
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Recv(context.Context) <-chan bool
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Events(context.Context) (event.Events, error)
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Close(context.Context) error
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}
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type EventStream interface {
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Subscribe(ctx context.Context, streamID string, start int64) (Subscription, error)
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Send(ctx context.Context, streamID string, events event.Events) error
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}
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