[errors] de-specialize Transient in favor of Tags.

logdog/server/cmd/logdog_archivist/main.go

 // Copyright 2016 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package main
 
 import (
         "time"
 
         "github.com/luci/luci-go/common/clock"
         "github.com/luci/luci-go/common/data/rand/mathrand"
         "github.com/luci/luci-go/common/errors"
         "github.com/luci/luci-go/common/gcloud/gs"
         gcps "github.com/luci/luci-go/common/gcloud/pubsub"
         log "github.com/luci/luci-go/common/logging"
         "github.com/luci/luci-go/common/retry"
+        "github.com/luci/luci-go/common/retry/transient"
         "github.com/luci/luci-go/common/tsmon/distribution"
         "github.com/luci/luci-go/common/tsmon/field"
         "github.com/luci/luci-go/common/tsmon/metric"
         "github.com/luci/luci-go/common/tsmon/types"
         "github.com/luci/luci-go/grpc/grpcutil"
         "github.com/luci/luci-go/logdog/api/config/svcconfig"
         "github.com/luci/luci-go/logdog/server/archivist"
         "github.com/luci/luci-go/logdog/server/service"
         "github.com/luci/luci-go/luci_config/common/cfgtypes"
 
@@ skipping 111 matching lines @@
                 return &retry.ExponentialBackoff{
                         Limited: retry.Limited{
                                 Delay:   200 * time.Millisecond,
                                 Retries: -1, // Unlimited.
                         },
                         MaxDelay:   10 * time.Second,
                         Multiplier: 2,
                 }
         }
 
-        err = retry.Retry(c, retry.TransientOnly(retryForever), func() error {
+        err = retry.Retry(c, transient.Only(retryForever), func() error {
                 return grpcutil.WrapIfTransient(sub.Receive(c, func(c context.Context, msg *pubsub.Message) {
                         c = log.SetFields(c, log.Fields{
                                 "messageID": msg.ID,
                         })
 
                         // ACK (or not) the message based on whether our task was consumed.
                         deleteTask := false
                         defer func() {
                                 // ACK the message if it is completed. If not, we do not NACK it, as we
                                 // want to let Pub/Sub redelivery delay occur as a form of backoff.
@@ skipping 105 matching lines @@
 func main() {
         mathrand.SeedRandomly()
         a := application{
                 Service: service.Service{
                         Name:               "archivist",
                         DefaultAuthOptions: chromeinfra.DefaultAuthOptions(),
                 },
         }
         a.Run(context.Background(), a.runArchivist)
 }