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