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package amqp
import (
"time"
"github.com/cenkalti/backoff/v4"
amqp "github.com/rabbitmq/amqp091-go"
"github.com/spiral/errors"
"github.com/spiral/roadrunner/v2/pkg/events"
"github.com/spiral/roadrunner/v2/plugins/jobs/pipeline"
)
// redialer used to redial to the rabbitmq in case of the connection interrupts
func (j *JobConsumer) redialer() { //nolint:gocognit
go func() {
const op = errors.Op("rabbitmq_redial")
for {
select {
case err := <-j.conn.NotifyClose(make(chan *amqp.Error)):
if err == nil {
return
}
j.Lock()
// trash the broken publishing channel
<-j.publishChan
t := time.Now()
pipe := j.pipeline.Load().(*pipeline.Pipeline)
j.eh.Push(events.JobEvent{
Event: events.EventPipeError,
Pipeline: pipe.Name(),
Driver: pipe.Driver(),
Error: err,
Start: time.Now(),
})
expb := backoff.NewExponentialBackOff()
// set the retry timeout (minutes)
expb.MaxElapsedTime = j.retryTimeout
operation := func() error {
j.log.Warn("rabbitmq reconnecting, caused by", "error", err)
var dialErr error
j.conn, dialErr = amqp.Dial(j.connStr)
if dialErr != nil {
return errors.E(op, dialErr)
}
j.log.Info("rabbitmq dial succeed. trying to redeclare queues and subscribers")
// re-init connection
errInit := j.initRabbitMQ()
if errInit != nil {
j.log.Error("rabbitmq dial", "error", errInit)
return errInit
}
// redeclare consume channel
var errConnCh error
j.consumeChan, errConnCh = j.conn.Channel()
if errConnCh != nil {
return errors.E(op, errConnCh)
}
// redeclare publish channel
pch, errPubCh := j.conn.Channel()
if errPubCh != nil {
return errors.E(op, errPubCh)
}
// start reading messages from the channel
deliv, err := j.consumeChan.Consume(
j.queue,
j.consumeID,
false,
false,
false,
false,
nil,
)
if err != nil {
return errors.E(op, err)
}
// put the fresh publishing channel
j.publishChan <- pch
// restart listener
j.listener(deliv)
j.log.Info("queues and subscribers redeclared successfully")
return nil
}
retryErr := backoff.Retry(operation, expb)
if retryErr != nil {
j.Unlock()
j.log.Error("backoff failed", "error", retryErr)
return
}
j.eh.Push(events.JobEvent{
Event: events.EventPipeActive,
Pipeline: pipe.Name(),
Driver: pipe.Driver(),
Start: t,
Elapsed: time.Since(t),
})
j.Unlock()
case <-j.stopCh:
if j.publishChan != nil {
pch := <-j.publishChan
err := pch.Close()
if err != nil {
j.log.Error("publish channel close", "error", err)
}
}
if j.consumeChan != nil {
err := j.consumeChan.Close()
if err != nil {
j.log.Error("consume channel close", "error", err)
}
}
if j.conn != nil {
err := j.conn.Close()
if err != nil {
j.log.Error("amqp connection close", "error", err)
}
}
return
}
}
}()
}
|
