Add debug logging to RepublishBuried with duration

Signed-off-by: Javi Fontan <jfontan@gmail.com>

Author: jfontan

amqp/amqp.go

@@ -355,12 +355,21 @@ func (q *Queue) RepublishBuried(conditions ...queue.RepublishConditionFunc) erro
 }
 
 if j == nil {
+log.With(log.Fields{
+"retries": retries,
+}).Debugf("received empty job")
+
 // check (in non blocking mode) up to DefaultConfiguration.BuriedNonBlockingRetries
 // with a small delay between them just in case some job is
 // arriving, return if there is nothing after all the retries
 // (meaning: BuriedQueue is surely empty or any arriving jobs will
 // have to wait to the next call).
 if retries > DefaultConfiguration.BuriedNonBlockingRetries {
+log.With(log.Fields{
+"retries": retries,
+"max-retries": DefaultConfiguration.BuriedNonBlockingRetries,
+}).Debugf("maximum number of retries reached")
+
 break
 }
 
@@ -376,19 +385,45 @@ func (q *Queue) RepublishBuried(conditions ...queue.RepublishConditionFunc) erro
 }
 
 if queue.RepublishConditions(conditions).Comply(j) {
+start := time.Now()
 if err = q.Publish(j); err != nil {
+log.With(log.Fields{
+"duration": time.Since(start),
+"id": j.ID,
+}).Errorf(err, "error publishing job")
+
 errorsPublishing = append(errorsPublishing, &jobErr{j, err})
+} else {
+log.With(log.Fields{
+"duration": time.Since(start),
+"id": j.ID,
+}).Debugf("job republished")
 }
 } else {
-notComplying = append(notComplying, j)
+log.With(log.Fields{
+"id": j.ID,
+"error-type": j.ErrorType,
+"content-type": j.ContentType,
+"retries": j.Retries,
+}).Debugf("job does not comply with conditions")
 
+notComplying = append(notComplying, j)
 }
 }
 
-for _, job := range notComplying {
+log.Debugf("rejecting %v non complying jobs", len(notComplying))
+
+for i, job := range notComplying {
+start := time.Now()
+
 if err = job.Reject(true); err != nil {
 return err
 }
+
+log.With(log.Fields{
+"duration": time.Since(start),
+"id": job.ID,
+}).Debugf("job rejected (%v/%v)", i, len(notComplying))
 }
 
 return q.handleRepublishErrors(errorsPublishing)
@@ -397,11 +432,18 @@ func (q *Queue) RepublishBuried(conditions ...queue.RepublishConditionFunc) erro
 func (q *Queue) handleRepublishErrors(list []*jobErr) error {
 if len(list) > 0 {
 stringErrors := []string{}
-for _, je := range list {
+for i, je := range list {
 stringErrors = append(stringErrors, je.err.Error())
+start := time.Now()
+
 if err := q.buriedQueue.Publish(je.job); err != nil {
 return err
 }
+
+log.With(log.Fields{
+"duration": time.Since(start),
+"id": je.job.ID,
+}).Debugf("job reburied (%v/%v)", i, len(list))
 }
 
 return ErrRepublishingJobs.New(strings.Join(stringErrors, ": "))