/
relay.go
99 lines (81 loc) · 2.47 KB
/
relay.go
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package awssqs
import (
"context"
"time"
"github.com/batchcorp/plumber/util"
"github.com/batchcorp/plumber/validate"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/sqs"
"github.com/pkg/errors"
"github.com/batchcorp/plumber-schemas/build/go/protos/opts"
"github.com/batchcorp/plumber-schemas/build/go/protos/records"
"github.com/batchcorp/plumber/backends/awssqs/types"
"github.com/batchcorp/plumber/prometheus"
)
func (a *AWSSQS) Relay(ctx context.Context, relayOpts *opts.RelayOptions, relayCh chan interface{}, errorCh chan<- *records.ErrorRecord) error {
if err := validateRelayOptions(relayOpts); err != nil {
return errors.Wrap(err, "unable to verify relay options")
}
args := relayOpts.AwsSqs.Args
queueURL, err := a.getQueueURL(args.QueueName, args.RemoteAccountId)
if err != nil {
return errors.Wrap(err, "unable to get queue url")
}
for {
select {
case <-ctx.Done():
a.log.Debug("Received shutdown signal, exiting relayer")
return nil
default:
// NOOP
}
msg, err := a.client.ReceiveMessage(&sqs.ReceiveMessageInput{
// We intentionally do not set VisibilityTimeout as we aren't doing anything special with the message
WaitTimeSeconds: aws.Int64(args.WaitTimeSeconds),
QueueUrl: queueURL,
ReceiveRequestAttemptId: aws.String(args.ReceiveRequestAttemptId),
MaxNumberOfMessages: aws.Int64(args.MaxNumMessages),
})
if err != nil {
errorCh <- &records.ErrorRecord{
OccurredAtUnixTsUtc: time.Now().UTC().Unix(),
Error: errors.Wrap(err, "unable to read SQS message").Error(),
}
prometheus.IncrPromCounter("plumber_read_errors", 1)
continue
}
for _, m := range msg.Messages {
relayCh <- &types.RelayMessage{
Value: m,
Options: &types.RelayMessageOptions{
Service: a.client,
QueueURL: util.DerefString(queueURL),
AutoDelete: args.AutoDelete,
},
}
prometheus.Incr("awssqs-relay-consumer", 1)
}
}
}
func validateRelayOptions(opts *opts.RelayOptions) error {
if opts == nil {
return validate.ErrEmptyRelayOpts
}
if opts.AwsSqs == nil {
return validate.ErrEmptyBackendGroup
}
args := opts.AwsSqs.Args
if args == nil {
return validate.ErrEmptyBackendArgs
}
if args.MaxNumMessages < 1 || args.MaxNumMessages > 10 {
return ErrInvalidMaxNumMessages
}
if args.WaitTimeSeconds < 0 || args.WaitTimeSeconds > 20 {
return ErrInvalidWaitTime
}
if args.QueueName == "" {
return ErrMissingQueue
}
return nil
}