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adapter.go
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adapter.go
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package publisher
import (
"github.com/eeuclidean/eventsourcing"
"github.com/eeuclidean/eventsourcing/eventstore"
"github.com/eeuclidean/eventsourcing/utils"
"github.com/go-redis/redis"
)
type RedisAdapterDomainEventPublisher struct {
RedisUrl string
DBIndex string
Password string
Channel string
SaveToEventStore bool
EventStore eventstore.EventStore
client *redis.Client
}
func (adapter *RedisAdapterDomainEventPublisher) Publish(event eventsourcing.Event) error {
if err := adapter.init(); err != nil {
return err
}
if err := adapter.save(event); err != nil {
return err
}
return adapter.publish(event)
}
func (adapter *RedisAdapterDomainEventPublisher) init() error {
if adapter.client == nil {
client, err := utils.RedisDBLogin(adapter.RedisUrl, adapter.DBIndex, adapter.Password)
if err != nil {
return err
}
adapter.client = client
}
return nil
}
func (adapter *RedisAdapterDomainEventPublisher) save(event eventsourcing.Event) error {
if adapter.SaveToEventStore && adapter.EventStore != nil {
if err := adapter.EventStore.Save(event); err != nil {
return err
}
}
return nil
}
func (adapter *RedisAdapterDomainEventPublisher) publish(event eventsourcing.Event) error {
values := map[string]interface{}{
"event_id": event.EventID,
"event_name": event.EventName,
"event_type": event.EventType,
"data_id": event.DataID,
"data_name": event.DataName,
"data": event.Data,
"create_by": event.CreateBy,
"timestamp": event.TimeStamp,
}
if err := adapter.client.XAdd(&redis.XAddArgs{
Stream: adapter.Channel,
ID: "*",
Values: values,
}).Err(); err != nil {
return err
}
return nil
}