core/config: remove version (#4653)

* core/config: remove version

* lint

* fix

config/config.go

@@ -27,7 +27,6 @@ type Config struct {
 	Options          *Options
 	AutoCertificates []tls.Certificate
 	EnvoyVersion     string
-	Version          int64
 
 	// DerivedCertificates are TLS certificates derived from the shared secret
 	DerivedCertificates []tls.Certificate
@@ -63,7 +62,6 @@ func (cfg *Config) Clone() *Config {
 	_ = copy(endpoints, cfg.MetricsScrapeEndpoints)
 
 	return &Config{
-		Version:          cfg.Version,
 		Options:          newOptions,
 		AutoCertificates: cfg.AutoCertificates,
 		EnvoyVersion:     cfg.EnvoyVersion,

config/config_source.go

@@ -114,7 +114,6 @@ func NewFileOrEnvironmentSource(
 	cfg := &Config{
 		Options:      options,
 		EnvoyVersion: envoyVersion,
-		Version:      1,
 	}
 
 	ports, err := netutil.AllocatePorts(6)
@@ -152,7 +151,6 @@ func (src *FileOrEnvironmentSource) check(ctx context.Context) {
 	options, err := newOptionsFromConfig(src.configFile)
 	if err == nil {
 		cfg = cfg.Clone()
-		cfg.Version++
 		cfg.Options = options
 		metrics.SetConfigInfo(ctx, cfg.Options.Services, "local", cfg.Checksum(), true)
 	} else {
@@ -162,7 +160,7 @@ func (src *FileOrEnvironmentSource) check(ctx context.Context) {
 	src.config = cfg
 	src.mu.Unlock()
 
-	log.Info(ctx).Int64("config-version", cfg.Version).Msg("config: loaded configuration")
+	log.Info(ctx).Msg("config: loaded configuration")
 
 	src.Trigger(ctx, cfg)
 }

internal/controlplane/server.go

@@ -255,7 +255,6 @@ func (srv *Server) Run(ctx context.Context) error {
 				err := srv.update(ctx, cfg)
 				if err != nil {
 					log.Error(ctx).Err(err).
-						Int64("config-version", cfg.Version).
 						Msg("controlplane: error updating server with new config")
 				}
 			}
@@ -303,7 +302,7 @@ func (srv *Server) update(ctx context.Context, cfg *config.Config) error {
 	if err != nil {
 		return err
 	}
-	srv.xdsmgr.Update(ctx, cfg.Version, res)
+	srv.xdsmgr.Update(ctx, res)
 	return nil
 }
 

internal/controlplane/xds.go

@@ -26,7 +26,7 @@ func (srv *Server) buildDiscoveryResources(ctx context.Context) (map[string][]*e
 
 	cfg := srv.currentConfig.Load()
 
-	log.Info(ctx).Int64("config-version", cfg.Version).Msg("controlplane: building discovery resources")
+	log.Info(ctx).Msg("controlplane: building discovery resources")
 
 	eg, ctx := errgroup.WithContext(ctx)
 
@@ -84,7 +84,6 @@ func (srv *Server) buildDiscoveryResources(ctx context.Context) (map[string][]*e
 	}
 
 	log.Info(ctx).
-		Int64("config-version", cfg.Version).
 		Int("cluster-count", len(clusterResources)).
 		Int("listener-count", len(listenerResources)).
 		Int("route-configuration-count", len(routeConfigurationResources)).

internal/controlplane/xdsmgr/xdsmgr.go

@@ -3,9 +3,6 @@ package xdsmgr
 
 import (
 	"context"
-	"fmt"
-	"strconv"
-	"strings"
 	"sync"
 
 	envoy_service_discovery_v3 "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3"
@@ -40,7 +37,7 @@ func NewManager(resources map[string][]*envoy_service_discovery_v3.Resource) *Ma
 	return &Manager{
 		signal: signal.New(),
 
-		nonce:     toNonce(0),
+		nonce:     uuid.New().String(),
 		resources: resources,
 	}
 }
@@ -112,7 +109,6 @@ func (mgr *Manager) DeltaAggregatedResources(
 		case req.GetErrorDetail() != nil:
 			log.Info(ctx).
 				Any("error-detail", req.GetErrorDetail()).
-				Int64("config-version", versionFromNonce(req.GetResponseNonce())).
 				Msg("xdsmgr: nack")
 			// a NACK
 			// - set the client resource versions to the current resource versions
@@ -122,7 +118,6 @@ func (mgr *Manager) DeltaAggregatedResources(
 			}
 		case req.GetResponseNonce() == mgr.nonce:
 			log.Info(ctx).
-				Int64("config-version", versionFromNonce(req.GetResponseNonce())).
 				Msg("xdsmgr: ack")
 			// an ACK for the last response
 			// - set the client resource versions to the current resource versions
@@ -133,7 +128,6 @@ func (mgr *Manager) DeltaAggregatedResources(
 		default:
 			// an ACK for a response that's not the last response
 			log.Info(ctx).
-				Int64("config-version", versionFromNonce(req.GetResponseNonce())).
 				Msg("xdsmgr: ack")
 		}
 
@@ -215,7 +209,6 @@ func (mgr *Manager) DeltaAggregatedResources(
 				return ctx.Err()
 			case res := <-outgoing:
 				log.Info(ctx).
-					Int64("config-version", versionFromNonce(res.GetNonce())).
 					Int("resource-count", len(res.GetResources())).
 					Int("removed-resource-count", len(res.GetRemovedResources())).
 					Msg("xdsmgr: sending resources")
@@ -238,8 +231,8 @@ func (mgr *Manager) StreamAggregatedResources(
 
 // Update updates the state of resources. If any changes are made they will be pushed to any listening
 // streams. For each TypeURL the list of resources should be the complete list of resources.
-func (mgr *Manager) Update(ctx context.Context, version int64, resources map[string][]*envoy_service_discovery_v3.Resource) {
-	nonce := toNonce(version)
+func (mgr *Manager) Update(ctx context.Context, resources map[string][]*envoy_service_discovery_v3.Resource) {
+	nonce := uuid.New().String()
 
 	mgr.mu.Lock()
 	mgr.nonce = nonce
@@ -248,15 +241,3 @@ func (mgr *Manager) Update(ctx context.Context, version int64, resources map[str
 
 	mgr.signal.Broadcast(ctx)
 }
-
-func toNonce(version int64) string {
-	return fmt.Sprintf("%d/%s", version, uuid.New().String())
-}
-
-// versionFromNonce parses the version out of the nonce. A missing or invalid version will be returned as 0.
-func versionFromNonce(nonce string) (version int64) {
-	if idx := strings.Index(nonce, "/"); idx > 0 {
-		version, _ = strconv.ParseInt(nonce[:idx], 10, 64)
-	}
-	return version
-}

internal/controlplane/xdsmgr/xdsmgr_test.go

@@ -94,7 +94,7 @@ func TestManager(t *testing.T) {
 		}, msg.GetResources())
 		ack(msg.Nonce)
 
-		mgr.Update(ctx, 1, map[string][]*envoy_service_discovery_v3.Resource{
+		mgr.Update(ctx, map[string][]*envoy_service_discovery_v3.Resource{
 			typeURL: {{Name: "r1", Version: "2"}},
 		})
 
@@ -105,7 +105,7 @@ func TestManager(t *testing.T) {
 		}, msg.GetResources())
 		ack(msg.Nonce)
 
-		mgr.Update(ctx, 1, map[string][]*envoy_service_discovery_v3.Resource{
+		mgr.Update(ctx, map[string][]*envoy_service_discovery_v3.Resource{
 			typeURL: nil,
 		})
 

internal/databroker/config_source.go

@@ -109,9 +109,6 @@ func (src *ConfigSource) rebuild(ctx context.Context, firstTime firstTime) {
 	// add all the config policies to the list
 	for _, id := range ids {
 		cfgpb := src.dbConfigs[id]
-		if cfgpb.GetVersion() > 0 {
-			cfg.Version = cfgpb.GetVersion()
-		}
 
 		cfg.Options.ApplySettings(ctx, certsIndex, cfgpb.Settings)
 		var errCount uint64
@@ -171,7 +168,7 @@ func (src *ConfigSource) rebuild(ctx context.Context, firstTime firstTime) {
 	// add the additional policies here since calling `Validate` will reset them.
 	cfg.Options.AdditionalPolicies = append(cfg.Options.AdditionalPolicies, additionalPolicies...)
 
-	log.Info(ctx).Int64("config-version", cfg.Version).Msg("databroker: built new config")
+	log.Info(ctx).Msg("databroker: built new config")
 
 	src.computedConfig = cfg
 	if !firstTime {