128 lines
2.9 KiB
Go
128 lines
2.9 KiB
Go
package queue
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"sync"
|
|
"time"
|
|
|
|
"go.uber.org/zap"
|
|
|
|
sqs_client "github.com/wormhole-foundation/wormhole-explorer/common/client/sqs"
|
|
)
|
|
|
|
// SQSOption represents a VAA queue in SQS option function.
|
|
type SQSOption func(*SQS)
|
|
|
|
// SQS represents a VAA queue in SQS.
|
|
type SQS struct {
|
|
consumer *sqs_client.Consumer
|
|
ch chan ConsumerMessage
|
|
converter ConverterFunc
|
|
chSize int
|
|
wg sync.WaitGroup
|
|
logger *zap.Logger
|
|
}
|
|
|
|
// ConverterFunc converts a message from a sqs message.
|
|
type ConverterFunc func(string) (*Event, error)
|
|
|
|
// NewEventSqs creates a VAA queue in SQS instances.
|
|
func NewEventSqs(consumer *sqs_client.Consumer, converter ConverterFunc, logger *zap.Logger, opts ...SQSOption) *SQS {
|
|
s := &SQS{
|
|
consumer: consumer,
|
|
converter: converter,
|
|
chSize: 10,
|
|
logger: logger}
|
|
for _, opt := range opts {
|
|
opt(s)
|
|
}
|
|
s.ch = make(chan ConsumerMessage, s.chSize)
|
|
return s
|
|
}
|
|
|
|
// WithChannelSize allows to specify an channel size when setting a value.
|
|
func WithChannelSize(size int) SQSOption {
|
|
return func(d *SQS) {
|
|
d.chSize = size
|
|
}
|
|
}
|
|
|
|
// Consume returns the channel with the received messages from SQS queue.
|
|
func (q *SQS) Consume(ctx context.Context) <-chan ConsumerMessage {
|
|
go func() {
|
|
for {
|
|
messages, err := q.consumer.GetMessages(ctx)
|
|
if err != nil {
|
|
q.logger.Error("Error getting messages from SQS", zap.Error(err))
|
|
continue
|
|
}
|
|
expiredAt := time.Now().Add(q.consumer.GetVisibilityTimeout())
|
|
for _, msg := range messages {
|
|
// unmarshal body to sqsEvent
|
|
var sqsEvent sqsEvent
|
|
err := json.Unmarshal([]byte(*msg.Body), &sqsEvent)
|
|
if err != nil {
|
|
q.logger.Error("Error decoding message from SQS", zap.Error(err))
|
|
continue
|
|
}
|
|
|
|
// converts message to event
|
|
event, err := q.converter(sqsEvent.Message)
|
|
if err != nil {
|
|
q.logger.Error("Error converting event message from SQSEvent", zap.Error(err))
|
|
continue
|
|
}
|
|
|
|
q.wg.Add(1)
|
|
q.ch <- &sqsConsumerMessage{
|
|
id: msg.ReceiptHandle,
|
|
data: event,
|
|
wg: &q.wg,
|
|
logger: q.logger,
|
|
consumer: q.consumer,
|
|
expiredAt: expiredAt,
|
|
ctx: ctx,
|
|
}
|
|
}
|
|
q.wg.Wait()
|
|
}
|
|
|
|
}()
|
|
return q.ch
|
|
}
|
|
|
|
// Close closes all consumer resources.
|
|
func (q *SQS) Close() {
|
|
close(q.ch)
|
|
}
|
|
|
|
type sqsConsumerMessage struct {
|
|
data *Event
|
|
consumer *sqs_client.Consumer
|
|
wg *sync.WaitGroup
|
|
id *string
|
|
logger *zap.Logger
|
|
expiredAt time.Time
|
|
ctx context.Context
|
|
}
|
|
|
|
func (m *sqsConsumerMessage) Data() *Event {
|
|
return m.data
|
|
}
|
|
|
|
func (m *sqsConsumerMessage) Done() {
|
|
if err := m.consumer.DeleteMessage(m.ctx, m.id); err != nil {
|
|
m.logger.Error("Error deleting message from SQS", zap.Error(err))
|
|
}
|
|
m.wg.Done()
|
|
}
|
|
|
|
func (m *sqsConsumerMessage) Failed() {
|
|
m.wg.Done()
|
|
}
|
|
|
|
func (m *sqsConsumerMessage) IsExpired() bool {
|
|
return m.expiredAt.Before(time.Now())
|
|
}
|