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