perf: remove expensive reflection from xDS hot path (#14934)

Replaces the reflection-based implementation of proxycfg's
ConfigSnapshot.Clone with code generated by deep-copy.

While load testing server-based xDS (for consul-dataplane) we discovered
this method is extremely expensive. The ConfigSnapshot struct, directly
or indirectly, contains a copy of many of the structs in the agent/structs
package, which creates a large graph for copystructure.Copy to traverse
at runtime, on every proxy reconfiguration.

.changelog/14934.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+xds: Removed a bottleneck in Envoy config generation, enabling a higher number of dataplanes per server
+```

.circleci/config.yml

@@ -263,6 +263,26 @@ jobs:
           name: "Protobuf Lint"
           command: make proto-lint
 
+  check-generated-deep-copy:
+    docker:
+      - image: *GOLANG_IMAGE
+    environment:
+      <<: *ENVIRONMENT
+      # tput complains if this isn't set to something.
+      TERM: ansi
+    steps:
+      - checkout
+      - run:
+          name: Install deep-copy
+          command: make codegen-tools
+      - run:
+          command: make --always-make deep-copy
+      - run: |
+          if ! git diff --exit-code; then
+            echo "Generated code was not updated correctly"
+            exit 1
+          fi
+
   go-test-arm64:
     machine:
       image: *UBUNTU_CI_IMAGE
@@ -1036,6 +1056,7 @@ workflows:
                 - /^docs\/.*/
                 - /^ui\/.*/
       - check-generated-protobuf: *filter-ignore-non-go-branches
+      - check-generated-deep-copy: *filter-ignore-non-go-branches
       - lint-enums: *filter-ignore-non-go-branches
       - lint-consul-retry: *filter-ignore-non-go-branches
       - lint: *filter-ignore-non-go-branches

GNUmakefile

@@ -13,6 +13,7 @@ BUF_VERSION='v1.4.0'
 PROTOC_GEN_GO_GRPC_VERSION="v1.2.0"
 MOG_VERSION='v0.3.0'
 PROTOC_GO_INJECT_TAG_VERSION='v1.3.0'
+DEEP_COPY_VERSION='bc3f5aa5735d8a54961580a3a24422c308c831c2'
 
 MOCKED_PB_DIRS= pbdns
 
@@ -321,6 +322,16 @@ lint-tools:
 proto-tools:
 	@$(SHELL) $(CURDIR)/build-support/scripts/devtools.sh -protobuf
 
+.PHONY: codegen-tools
+codegen-tools:
+	@$(SHELL) $(CURDIR)/build-support/scripts/devtools.sh -codegen
+
+.PHONY: deep-copy
+deep-copy:
+	@$(SHELL) $(CURDIR)/agent/structs/deep-copy.sh
+	@$(SHELL) $(CURDIR)/proto/pbpeering/deep-copy.sh
+	@$(SHELL) $(CURDIR)/agent/proxycfg/deep-copy.sh
+
 version:
 	@echo -n "Version:                    "
 	@$(SHELL) $(CURDIR)/build-support/scripts/version.sh

agent/proxycfg/deep-copy.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+readonly PACKAGE_DIR="$(dirname "${BASH_SOURCE[0]}")"
+cd $PACKAGE_DIR
+
+# Uses: https://github.com/globusdigital/deep-copy
+deep-copy -pointer-receiver \
+  -o ./proxycfg.deepcopy.go \
+  -type ConfigSnapshot \
+  -type ConfigSnapshotUpstreams \
+  -type PeerServersValue \
+  -type PeeringServiceValue \
+  -type configSnapshotConnectProxy \
+  -type configSnapshotIngressGateway \
+  -type configSnapshotMeshGateway \
+  -type configSnapshotTerminatingGateway \
+  ./

agent/proxycfg/internal/watch/watchmap.go

@@ -2,11 +2,18 @@ package watch
 
 import "context"
 
+// DeepCopyable describes a type that implements the DeepCopy
+// method to get a copy of itself that is safe to pass around
+// without worrying about receivers modifying the original.
+type DeepCopyable[T any] interface {
+	DeepCopy() T
+}
+
 // Map safely stores and retrieves values by validating that
 // there is a live watch for a key. InitWatch must be called
 // to associate a key with its cancel function before any
 // Set's are called.
-type Map[K comparable, V any] struct {
+type Map[K comparable, V DeepCopyable[V]] struct {
 	M map[K]watchedVal[V]
 }
 
@@ -20,10 +27,26 @@ type watchedVal[V any] struct {
 	cancel context.CancelFunc
 }
 
-func NewMap[K comparable, V any]() Map[K, V] {
+func NewMap[K comparable, V DeepCopyable[V]]() Map[K, V] {
 	return Map[K, V]{M: make(map[K]watchedVal[V])}
 }
 
+// DeepCopy returns a copy of the Map that is safe to be passed
+// around without worrying about receivers modifying the original
+// or canceling its watches.
+func (m Map[K, V]) DeepCopy() Map[K, V] {
+	dup := make(map[K]watchedVal[V], len(m.M))
+	for k, v := range m.M {
+		var val *V
+		if v.Val != nil {
+			dc := (*v.Val).DeepCopy()
+			val = &dc
+		}
+		dup[k] = watchedVal[V]{Val: val}
+	}
+	return Map[K, V]{M: dup}
+}
+
 // InitWatch associates a cancel function with a key,
 // allowing Set to be called for the key. The cancel
 // function is allowed to be nil.

agent/proxycfg/internal/watch/watchmap_test.go

@@ -8,7 +8,7 @@ import (
 )
 
 func TestMap(t *testing.T) {
-	m := NewMap[string, string]()
+	m := NewMap[string, testVal]()
 
 	// Set without init is a no-op
 	{
@@ -51,7 +51,7 @@ func TestMap(t *testing.T) {
 	{
 		got, ok := m.Get("hello")
 		require.True(t, ok)
-		require.Equal(t, "world", got)
+		require.Equal(t, "world", string(got))
 	}
 
 	// CancelWatch successful
@@ -76,15 +76,11 @@ func TestMap(t *testing.T) {
 }
 
 func TestMap_ForEach(t *testing.T) {
-	type testType struct {
-		s string
-	}
-
-	m := NewMap[string, any]()
-	inputs := map[string]any{
-		"hello": 13,
-		"foo":   struct{}{},
-		"bar":   &testType{s: "wow"},
+	m := NewMap[string, testVal]()
+	inputs := map[string]testVal{
+		"hello": "world",
+		"foo":   "bar",
+		"baz":   "bat",
 	}
 	for k, v := range inputs {
 		m.InitWatch(k, nil)
@@ -114,15 +110,11 @@ func TestMap_ForEach(t *testing.T) {
 }
 
 func TestMap_ForEachE(t *testing.T) {
-	type testType struct {
-		s string
-	}
-
-	m := NewMap[string, any]()
-	inputs := map[string]any{
-		"hello": 13,
-		"foo":   struct{}{},
-		"bar":   &testType{s: "wow"},
+	m := NewMap[string, testVal]()
+	inputs := map[string]testVal{
+		"hello": "world",
+		"foo":   "bar",
+		"baz":   "bat",
 	}
 	for k, v := range inputs {
 		m.InitWatch(k, nil)
@@ -152,3 +144,27 @@ func TestMap_ForEachE(t *testing.T) {
 		require.Errorf(t, err, "boo")
 	}
 }
+
+func TestMap_DeepCopy(t *testing.T) {
+	orig := NewMap[string, testVal]()
+	inputs := map[string]testVal{
+		"hello": "world",
+		"foo":   "bar",
+		"baz":   "bat",
+	}
+	for k, v := range inputs {
+		orig.InitWatch(k, nil)
+		orig.Set(k, v)
+	}
+	require.Equal(t, 3, orig.Len())
+
+	clone := orig.DeepCopy()
+	require.Equal(t, 3, clone.Len())
+
+	orig.CancelWatch("hello")
+	require.NotEqual(t, orig.Len(), clone.Len())
+}
+
+type testVal string
+
+func (tv testVal) DeepCopy() testVal { return tv }

agent/proxycfg/manager_test.go

@@ -4,7 +4,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/mitchellh/copystructure"
 	"github.com/stretchr/testify/require"
 
 	"github.com/hashicorp/consul/acl"
@@ -326,17 +325,14 @@ func TestManager_BasicLifecycle(t *testing.T) {
 			dataSources.ConfigEntry.Set(meshConfigReq, &structs.ConfigEntryResponse{Entry: nil})
 			tt.setup(t, dataSources)
 
-			expectSnapCopy, err := tt.expectSnap.Clone()
-			require.NoError(t, err)
-
-			webProxyCopy, err := copystructure.Copy(webProxy)
-			require.NoError(t, err)
+			expectSnapCopy := tt.expectSnap.Clone()
+			webProxyCopy := webProxy.DeepCopy()
 
 			testManager_BasicLifecycle(t,
 				dataSources,
 				rootsReq, leafReq,
 				roots,
-				webProxyCopy.(*structs.NodeService),
+				webProxyCopy,
 				expectSnapCopy,
 			)
 		})

agent/proxycfg/proxycfg.deepcopy.go

@@ -0,0 +1,607 @@
+// generated by deep-copy -pointer-receiver -o ./proxycfg.deepcopy.go -type ConfigSnapshot -type ConfigSnapshotUpstreams -type PeerServersValue -type PeeringServiceValue -type configSnapshotConnectProxy -type configSnapshotIngressGateway -type configSnapshotMeshGateway -type configSnapshotTerminatingGateway ./; DO NOT EDIT.
+
+package proxycfg
+
+import (
+	"context"
+	"github.com/hashicorp/consul/agent/structs"
+	"github.com/hashicorp/consul/proto/pbpeering"
+	"github.com/hashicorp/consul/types"
+)
+
+// DeepCopy generates a deep copy of *ConfigSnapshot
+func (o *ConfigSnapshot) DeepCopy() *ConfigSnapshot {
+	var cp ConfigSnapshot = *o
+	if o.ServiceMeta != nil {
+		cp.ServiceMeta = make(map[string]string, len(o.ServiceMeta))
+		for k2, v2 := range o.ServiceMeta {
+			cp.ServiceMeta[k2] = v2
+		}
+	}
+	if o.TaggedAddresses != nil {
+		cp.TaggedAddresses = make(map[string]structs.ServiceAddress, len(o.TaggedAddresses))
+		for k2, v2 := range o.TaggedAddresses {
+			cp.TaggedAddresses[k2] = v2
+		}
+	}
+	{
+		retV := o.Proxy.DeepCopy()
+		cp.Proxy = *retV
+	}
+	if o.Roots != nil {
+		cp.Roots = o.Roots.DeepCopy()
+	}
+	{
+		retV := o.ConnectProxy.DeepCopy()
+		cp.ConnectProxy = *retV
+	}
+	{
+		retV := o.TerminatingGateway.DeepCopy()
+		cp.TerminatingGateway = *retV
+	}
+	{
+		retV := o.MeshGateway.DeepCopy()
+		cp.MeshGateway = *retV
+	}
+	{
+		retV := o.IngressGateway.DeepCopy()
+		cp.IngressGateway = *retV
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ConfigSnapshotUpstreams
+func (o *ConfigSnapshotUpstreams) DeepCopy() *ConfigSnapshotUpstreams {
+	var cp ConfigSnapshotUpstreams = *o
+	if o.Leaf != nil {
+		cp.Leaf = new(structs.IssuedCert)
+		*cp.Leaf = *o.Leaf
+	}
+	if o.MeshConfig != nil {
+		cp.MeshConfig = o.MeshConfig.DeepCopy()
+	}
+	if o.DiscoveryChain != nil {
+		cp.DiscoveryChain = make(map[UpstreamID]*structs.CompiledDiscoveryChain, len(o.DiscoveryChain))
+		for k2, v2 := range o.DiscoveryChain {
+			var cp_DiscoveryChain_v2 *structs.CompiledDiscoveryChain
+			if v2 != nil {
+				cp_DiscoveryChain_v2 = v2.DeepCopy()
+			}
+			cp.DiscoveryChain[k2] = cp_DiscoveryChain_v2
+		}
+	}
+	if o.WatchedDiscoveryChains != nil {
+		cp.WatchedDiscoveryChains = make(map[UpstreamID]context.CancelFunc, len(o.WatchedDiscoveryChains))
+		for k2, v2 := range o.WatchedDiscoveryChains {
+			cp.WatchedDiscoveryChains[k2] = v2
+		}
+	}
+	if o.WatchedUpstreams != nil {
+		cp.WatchedUpstreams = make(map[UpstreamID]map[string]context.CancelFunc, len(o.WatchedUpstreams))
+		for k2, v2 := range o.WatchedUpstreams {
+			var cp_WatchedUpstreams_v2 map[string]context.CancelFunc
+			if v2 != nil {
+				cp_WatchedUpstreams_v2 = make(map[string]context.CancelFunc, len(v2))
+				for k3, v3 := range v2 {
+					cp_WatchedUpstreams_v2[k3] = v3
+				}
+			}
+			cp.WatchedUpstreams[k2] = cp_WatchedUpstreams_v2
+		}
+	}
+	if o.WatchedUpstreamEndpoints != nil {
+		cp.WatchedUpstreamEndpoints = make(map[UpstreamID]map[string]structs.CheckServiceNodes, len(o.WatchedUpstreamEndpoints))
+		for k2, v2 := range o.WatchedUpstreamEndpoints {
+			var cp_WatchedUpstreamEndpoints_v2 map[string]structs.CheckServiceNodes
+			if v2 != nil {
+				cp_WatchedUpstreamEndpoints_v2 = make(map[string]structs.CheckServiceNodes, len(v2))
+				for k3, v3 := range v2 {
+					var cp_WatchedUpstreamEndpoints_v2_v3 structs.CheckServiceNodes
+					cp_WatchedUpstreamEndpoints_v2_v3 = v3.DeepCopy()
+					cp_WatchedUpstreamEndpoints_v2[k3] = cp_WatchedUpstreamEndpoints_v2_v3
+				}
+			}
+			cp.WatchedUpstreamEndpoints[k2] = cp_WatchedUpstreamEndpoints_v2
+		}
+	}
+	cp.UpstreamPeerTrustBundles = o.UpstreamPeerTrustBundles.DeepCopy()
+	if o.WatchedGateways != nil {
+		cp.WatchedGateways = make(map[UpstreamID]map[string]context.CancelFunc, len(o.WatchedGateways))
+		for k2, v2 := range o.WatchedGateways {
+			var cp_WatchedGateways_v2 map[string]context.CancelFunc
+			if v2 != nil {
+				cp_WatchedGateways_v2 = make(map[string]context.CancelFunc, len(v2))
+				for k3, v3 := range v2 {
+					cp_WatchedGateways_v2[k3] = v3
+				}
+			}
+			cp.WatchedGateways[k2] = cp_WatchedGateways_v2
+		}
+	}
+	if o.WatchedGatewayEndpoints != nil {
+		cp.WatchedGatewayEndpoints = make(map[UpstreamID]map[string]structs.CheckServiceNodes, len(o.WatchedGatewayEndpoints))
+		for k2, v2 := range o.WatchedGatewayEndpoints {
+			var cp_WatchedGatewayEndpoints_v2 map[string]structs.CheckServiceNodes
+			if v2 != nil {
+				cp_WatchedGatewayEndpoints_v2 = make(map[string]structs.CheckServiceNodes, len(v2))
+				for k3, v3 := range v2 {
+					var cp_WatchedGatewayEndpoints_v2_v3 structs.CheckServiceNodes
+					cp_WatchedGatewayEndpoints_v2_v3 = v3.DeepCopy()
+					cp_WatchedGatewayEndpoints_v2[k3] = cp_WatchedGatewayEndpoints_v2_v3
+				}
+			}
+			cp.WatchedGatewayEndpoints[k2] = cp_WatchedGatewayEndpoints_v2
+		}
+	}
+	cp.WatchedLocalGWEndpoints = o.WatchedLocalGWEndpoints.DeepCopy()
+	if o.UpstreamConfig != nil {
+		cp.UpstreamConfig = make(map[UpstreamID]*structs.Upstream, len(o.UpstreamConfig))
+		for k2, v2 := range o.UpstreamConfig {
+			var cp_UpstreamConfig_v2 *structs.Upstream
+			if v2 != nil {
+				cp_UpstreamConfig_v2 = v2.DeepCopy()
+			}
+			cp.UpstreamConfig[k2] = cp_UpstreamConfig_v2
+		}
+	}
+	if o.PassthroughUpstreams != nil {
+		cp.PassthroughUpstreams = make(map[UpstreamID]map[string]map[string]struct{}, len(o.PassthroughUpstreams))
+		for k2, v2 := range o.PassthroughUpstreams {
+			var cp_PassthroughUpstreams_v2 map[string]map[string]struct{}
+			if v2 != nil {
+				cp_PassthroughUpstreams_v2 = make(map[string]map[string]struct{}, len(v2))
+				for k3, v3 := range v2 {
+					var cp_PassthroughUpstreams_v2_v3 map[string]struct{}
+					if v3 != nil {
+						cp_PassthroughUpstreams_v2_v3 = make(map[string]struct{}, len(v3))
+						for k4, v4 := range v3 {
+							cp_PassthroughUpstreams_v2_v3[k4] = v4
+						}
+					}
+					cp_PassthroughUpstreams_v2[k3] = cp_PassthroughUpstreams_v2_v3
+				}
+			}
+			cp.PassthroughUpstreams[k2] = cp_PassthroughUpstreams_v2
+		}
+	}
+	if o.PassthroughIndices != nil {
+		cp.PassthroughIndices = make(map[string]indexedTarget, len(o.PassthroughIndices))
+		for k2, v2 := range o.PassthroughIndices {
+			cp.PassthroughIndices[k2] = v2
+		}
+	}
+	if o.IntentionUpstreams != nil {
+		cp.IntentionUpstreams = make(map[UpstreamID]struct{}, len(o.IntentionUpstreams))
+		for k2, v2 := range o.IntentionUpstreams {
+			cp.IntentionUpstreams[k2] = v2
+		}
+	}
+	if o.PeeredUpstreams != nil {
+		cp.PeeredUpstreams = make(map[UpstreamID]struct{}, len(o.PeeredUpstreams))
+		for k2, v2 := range o.PeeredUpstreams {
+			cp.PeeredUpstreams[k2] = v2
+		}
+	}
+	cp.PeerUpstreamEndpoints = o.PeerUpstreamEndpoints.DeepCopy()
+	if o.PeerUpstreamEndpointsUseHostnames != nil {
+		cp.PeerUpstreamEndpointsUseHostnames = make(map[UpstreamID]struct{}, len(o.PeerUpstreamEndpointsUseHostnames))
+		for k2, v2 := range o.PeerUpstreamEndpointsUseHostnames {
+			cp.PeerUpstreamEndpointsUseHostnames[k2] = v2
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *PeerServersValue
+func (o *PeerServersValue) DeepCopy() *PeerServersValue {
+	var cp PeerServersValue = *o
+	if o.Addresses != nil {
+		cp.Addresses = make([]structs.ServiceAddress, len(o.Addresses))
+		copy(cp.Addresses, o.Addresses)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *PeeringServiceValue
+func (o *PeeringServiceValue) DeepCopy() *PeeringServiceValue {
+	var cp PeeringServiceValue = *o
+	cp.Nodes = o.Nodes.DeepCopy()
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *configSnapshotConnectProxy
+func (o *configSnapshotConnectProxy) DeepCopy() *configSnapshotConnectProxy {
+	var cp configSnapshotConnectProxy = *o
+	{
+		retV := o.ConfigSnapshotUpstreams.DeepCopy()
+		cp.ConfigSnapshotUpstreams = *retV
+	}
+	if o.InboundPeerTrustBundles != nil {
+		cp.InboundPeerTrustBundles = make([]*pbpeering.PeeringTrustBundle, len(o.InboundPeerTrustBundles))
+		copy(cp.InboundPeerTrustBundles, o.InboundPeerTrustBundles)
+		for i2 := range o.InboundPeerTrustBundles {
+			if o.InboundPeerTrustBundles[i2] != nil {
+				cp.InboundPeerTrustBundles[i2] = o.InboundPeerTrustBundles[i2].DeepCopy()
+			}
+		}
+	}
+	if o.WatchedServiceChecks != nil {
+		cp.WatchedServiceChecks = make(map[structs.ServiceID][]structs.CheckType, len(o.WatchedServiceChecks))
+		for k2, v2 := range o.WatchedServiceChecks {
+			var cp_WatchedServiceChecks_v2 []structs.CheckType
+			if v2 != nil {
+				cp_WatchedServiceChecks_v2 = make([]structs.CheckType, len(v2))
+				copy(cp_WatchedServiceChecks_v2, v2)
+				for i3 := range v2 {
+					{
+						retV := v2[i3].DeepCopy()
+						cp_WatchedServiceChecks_v2[i3] = *retV
+					}
+				}
+			}
+			cp.WatchedServiceChecks[k2] = cp_WatchedServiceChecks_v2
+		}
+	}
+	if o.PreparedQueryEndpoints != nil {
+		cp.PreparedQueryEndpoints = make(map[UpstreamID]structs.CheckServiceNodes, len(o.PreparedQueryEndpoints))
+		for k2, v2 := range o.PreparedQueryEndpoints {
+			var cp_PreparedQueryEndpoints_v2 structs.CheckServiceNodes
+			cp_PreparedQueryEndpoints_v2 = v2.DeepCopy()
+			cp.PreparedQueryEndpoints[k2] = cp_PreparedQueryEndpoints_v2
+		}
+	}
+	if o.Intentions != nil {
+		cp.Intentions = make([]*structs.Intention, len(o.Intentions))
+		copy(cp.Intentions, o.Intentions)
+		for i2 := range o.Intentions {
+			if o.Intentions[i2] != nil {
+				cp.Intentions[i2] = o.Intentions[i2].DeepCopy()
+			}
+		}
+	}
+	cp.DestinationsUpstream = o.DestinationsUpstream.DeepCopy()
+	cp.DestinationGateways = o.DestinationGateways.DeepCopy()
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *configSnapshotIngressGateway
+func (o *configSnapshotIngressGateway) DeepCopy() *configSnapshotIngressGateway {
+	var cp configSnapshotIngressGateway = *o
+	{
+		retV := o.ConfigSnapshotUpstreams.DeepCopy()
+		cp.ConfigSnapshotUpstreams = *retV
+	}
+	if o.TLSConfig.SDS != nil {
+		cp.TLSConfig.SDS = new(structs.GatewayTLSSDSConfig)
+		*cp.TLSConfig.SDS = *o.TLSConfig.SDS
+	}
+	if o.TLSConfig.CipherSuites != nil {
+		cp.TLSConfig.CipherSuites = make([]types.TLSCipherSuite, len(o.TLSConfig.CipherSuites))
+		copy(cp.TLSConfig.CipherSuites, o.TLSConfig.CipherSuites)
+	}
+	if o.Hosts != nil {
+		cp.Hosts = make([]string, len(o.Hosts))
+		copy(cp.Hosts, o.Hosts)
+	}
+	if o.Upstreams != nil {
+		cp.Upstreams = make(map[IngressListenerKey]structs.Upstreams, len(o.Upstreams))
+		for k2, v2 := range o.Upstreams {
+			var cp_Upstreams_v2 structs.Upstreams
+			if v2 != nil {
+				cp_Upstreams_v2 = make([]structs.Upstream, len(v2))
+				copy(cp_Upstreams_v2, v2)
+				for i3 := range v2 {
+					{
+						retV := v2[i3].DeepCopy()
+						cp_Upstreams_v2[i3] = *retV
+					}
+				}
+			}
+			cp.Upstreams[k2] = cp_Upstreams_v2
+		}
+	}
+	if o.UpstreamsSet != nil {
+		cp.UpstreamsSet = make(map[UpstreamID]struct{}, len(o.UpstreamsSet))
+		for k2, v2 := range o.UpstreamsSet {
+			cp.UpstreamsSet[k2] = v2
+		}
+	}
+	if o.Listeners != nil {
+		cp.Listeners = make(map[IngressListenerKey]structs.IngressListener, len(o.Listeners))
+		for k2, v2 := range o.Listeners {
+			var cp_Listeners_v2 structs.IngressListener
+			{
+				retV := v2.DeepCopy()
+				cp_Listeners_v2 = *retV
+			}
+			cp.Listeners[k2] = cp_Listeners_v2
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *configSnapshotMeshGateway
+func (o *configSnapshotMeshGateway) DeepCopy() *configSnapshotMeshGateway {
+	var cp configSnapshotMeshGateway = *o
+	if o.WatchedServices != nil {
+		cp.WatchedServices = make(map[structs.ServiceName]context.CancelFunc, len(o.WatchedServices))
+		for k2, v2 := range o.WatchedServices {
+			cp.WatchedServices[k2] = v2
+		}
+	}
+	if o.WatchedGateways != nil {
+		cp.WatchedGateways = make(map[string]context.CancelFunc, len(o.WatchedGateways))
+		for k2, v2 := range o.WatchedGateways {
+			cp.WatchedGateways[k2] = v2
+		}
+	}
+	if o.ServiceGroups != nil {
+		cp.ServiceGroups = make(map[structs.ServiceName]structs.CheckServiceNodes, len(o.ServiceGroups))
+		for k2, v2 := range o.ServiceGroups {
+			var cp_ServiceGroups_v2 structs.CheckServiceNodes
+			cp_ServiceGroups_v2 = v2.DeepCopy()
+			cp.ServiceGroups[k2] = cp_ServiceGroups_v2
+		}
+	}
+	if o.PeeringServices != nil {
+		cp.PeeringServices = make(map[string]map[structs.ServiceName]PeeringServiceValue, len(o.PeeringServices))
+		for k2, v2 := range o.PeeringServices {
+			var cp_PeeringServices_v2 map[structs.ServiceName]PeeringServiceValue
+			if v2 != nil {
+				cp_PeeringServices_v2 = make(map[structs.ServiceName]PeeringServiceValue, len(v2))
+				for k3, v3 := range v2 {
+					var cp_PeeringServices_v2_v3 PeeringServiceValue
+					{
+						retV := v3.DeepCopy()
+						cp_PeeringServices_v2_v3 = *retV
+					}
+					cp_PeeringServices_v2[k3] = cp_PeeringServices_v2_v3
+				}
+			}
+			cp.PeeringServices[k2] = cp_PeeringServices_v2
+		}
+	}
+	if o.WatchedPeeringServices != nil {
+		cp.WatchedPeeringServices = make(map[string]map[structs.ServiceName]context.CancelFunc, len(o.WatchedPeeringServices))
+		for k2, v2 := range o.WatchedPeeringServices {
+			var cp_WatchedPeeringServices_v2 map[structs.ServiceName]context.CancelFunc
+			if v2 != nil {
+				cp_WatchedPeeringServices_v2 = make(map[structs.ServiceName]context.CancelFunc, len(v2))
+				for k3, v3 := range v2 {
+					cp_WatchedPeeringServices_v2[k3] = v3
+				}
+			}
+			cp.WatchedPeeringServices[k2] = cp_WatchedPeeringServices_v2
+		}
+	}
+	if o.WatchedPeers != nil {
+		cp.WatchedPeers = make(map[string]context.CancelFunc, len(o.WatchedPeers))
+		for k2, v2 := range o.WatchedPeers {
+			cp.WatchedPeers[k2] = v2
+		}
+	}
+	if o.ServiceResolvers != nil {
+		cp.ServiceResolvers = make(map[structs.ServiceName]*structs.ServiceResolverConfigEntry, len(o.ServiceResolvers))
+		for k2, v2 := range o.ServiceResolvers {
+			var cp_ServiceResolvers_v2 *structs.ServiceResolverConfigEntry
+			if v2 != nil {
+				cp_ServiceResolvers_v2 = v2.DeepCopy()
+			}
+			cp.ServiceResolvers[k2] = cp_ServiceResolvers_v2
+		}
+	}
+	if o.GatewayGroups != nil {
+		cp.GatewayGroups = make(map[string]structs.CheckServiceNodes, len(o.GatewayGroups))
+		for k2, v2 := range o.GatewayGroups {
+			var cp_GatewayGroups_v2 structs.CheckServiceNodes
+			cp_GatewayGroups_v2 = v2.DeepCopy()
+			cp.GatewayGroups[k2] = cp_GatewayGroups_v2
+		}
+	}
+	if o.FedStateGateways != nil {
+		cp.FedStateGateways = make(map[string]structs.CheckServiceNodes, len(o.FedStateGateways))
+		for k2, v2 := range o.FedStateGateways {
+			var cp_FedStateGateways_v2 structs.CheckServiceNodes
+			cp_FedStateGateways_v2 = v2.DeepCopy()
+			cp.FedStateGateways[k2] = cp_FedStateGateways_v2
+		}
+	}
+	cp.WatchedLocalServers = o.WatchedLocalServers.DeepCopy()
+	if o.HostnameDatacenters != nil {
+		cp.HostnameDatacenters = make(map[string]structs.CheckServiceNodes, len(o.HostnameDatacenters))
+		for k2, v2 := range o.HostnameDatacenters {
+			var cp_HostnameDatacenters_v2 structs.CheckServiceNodes
+			cp_HostnameDatacenters_v2 = v2.DeepCopy()
+			cp.HostnameDatacenters[k2] = cp_HostnameDatacenters_v2
+		}
+	}
+	if o.ExportedServicesSlice != nil {
+		cp.ExportedServicesSlice = make([]structs.ServiceName, len(o.ExportedServicesSlice))
+		copy(cp.ExportedServicesSlice, o.ExportedServicesSlice)
+	}
+	if o.ExportedServicesWithPeers != nil {
+		cp.ExportedServicesWithPeers = make(map[structs.ServiceName][]string, len(o.ExportedServicesWithPeers))
+		for k2, v2 := range o.ExportedServicesWithPeers {
+			var cp_ExportedServicesWithPeers_v2 []string
+			if v2 != nil {
+				cp_ExportedServicesWithPeers_v2 = make([]string, len(v2))
+				copy(cp_ExportedServicesWithPeers_v2, v2)
+			}
+			cp.ExportedServicesWithPeers[k2] = cp_ExportedServicesWithPeers_v2
+		}
+	}
+	if o.DiscoveryChain != nil {
+		cp.DiscoveryChain = make(map[structs.ServiceName]*structs.CompiledDiscoveryChain, len(o.DiscoveryChain))
+		for k2, v2 := range o.DiscoveryChain {
+			var cp_DiscoveryChain_v2 *structs.CompiledDiscoveryChain
+			if v2 != nil {
+				cp_DiscoveryChain_v2 = v2.DeepCopy()
+			}
+			cp.DiscoveryChain[k2] = cp_DiscoveryChain_v2
+		}
+	}
+	if o.WatchedDiscoveryChains != nil {
+		cp.WatchedDiscoveryChains = make(map[structs.ServiceName]context.CancelFunc, len(o.WatchedDiscoveryChains))
+		for k2, v2 := range o.WatchedDiscoveryChains {
+			cp.WatchedDiscoveryChains[k2] = v2
+		}
+	}
+	if o.MeshConfig != nil {
+		cp.MeshConfig = o.MeshConfig.DeepCopy()
+	}
+	if o.Leaf != nil {
+		cp.Leaf = new(structs.IssuedCert)
+		*cp.Leaf = *o.Leaf
+	}
+	if o.PeerServers != nil {
+		cp.PeerServers = make(map[string]PeerServersValue, len(o.PeerServers))
+		for k2, v2 := range o.PeerServers {
+			var cp_PeerServers_v2 PeerServersValue
+			{
+				retV := v2.DeepCopy()
+				cp_PeerServers_v2 = *retV
+			}
+			cp.PeerServers[k2] = cp_PeerServers_v2
+		}
+	}
+	if o.PeeringTrustBundles != nil {
+		cp.PeeringTrustBundles = make([]*pbpeering.PeeringTrustBundle, len(o.PeeringTrustBundles))
+		copy(cp.PeeringTrustBundles, o.PeeringTrustBundles)
+		for i2 := range o.PeeringTrustBundles {
+			if o.PeeringTrustBundles[i2] != nil {
+				cp.PeeringTrustBundles[i2] = o.PeeringTrustBundles[i2].DeepCopy()
+			}
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *configSnapshotTerminatingGateway
+func (o *configSnapshotTerminatingGateway) DeepCopy() *configSnapshotTerminatingGateway {
+	var cp configSnapshotTerminatingGateway = *o
+	if o.MeshConfig != nil {
+		cp.MeshConfig = o.MeshConfig.DeepCopy()
+	}
+	if o.WatchedServices != nil {
+		cp.WatchedServices = make(map[structs.ServiceName]context.CancelFunc, len(o.WatchedServices))
+		for k2, v2 := range o.WatchedServices {
+			cp.WatchedServices[k2] = v2
+		}
+	}
+	if o.WatchedIntentions != nil {
+		cp.WatchedIntentions = make(map[structs.ServiceName]context.CancelFunc, len(o.WatchedIntentions))
+		for k2, v2 := range o.WatchedIntentions {
+			cp.WatchedIntentions[k2] = v2
+		}
+	}
+	if o.Intentions != nil {
+		cp.Intentions = make(map[structs.ServiceName]structs.Intentions, len(o.Intentions))
+		for k2, v2 := range o.Intentions {
+			var cp_Intentions_v2 structs.Intentions
+			if v2 != nil {
+				cp_Intentions_v2 = make([]*structs.Intention, len(v2))
+				copy(cp_Intentions_v2, v2)
+				for i3 := range v2 {
+					if v2[i3] != nil {
+						cp_Intentions_v2[i3] = v2[i3].DeepCopy()
+					}
+				}
+			}
+			cp.Intentions[k2] = cp_Intentions_v2
+		}
+	}
+	if o.WatchedLeaves != nil {
+		cp.WatchedLeaves = make(map[structs.ServiceName]context.CancelFunc, len(o.WatchedLeaves))
+		for k2, v2 := range o.WatchedLeaves {
+			cp.WatchedLeaves[k2] = v2
+		}
+	}
+	if o.ServiceLeaves != nil {
+		cp.ServiceLeaves = make(map[structs.ServiceName]*structs.IssuedCert, len(o.ServiceLeaves))
+		for k2, v2 := range o.ServiceLeaves {
+			var cp_ServiceLeaves_v2 *structs.IssuedCert
+			if v2 != nil {
+				cp_ServiceLeaves_v2 = new(structs.IssuedCert)
+				*cp_ServiceLeaves_v2 = *v2
+			}
+			cp.ServiceLeaves[k2] = cp_ServiceLeaves_v2
+		}
+	}
+	if o.WatchedConfigs != nil {
+		cp.WatchedConfigs = make(map[structs.ServiceName]context.CancelFunc, len(o.WatchedConfigs))
+		for k2, v2 := range o.WatchedConfigs {
+			cp.WatchedConfigs[k2] = v2
+		}
+	}
+	if o.ServiceConfigs != nil {
+		cp.ServiceConfigs = make(map[structs.ServiceName]*structs.ServiceConfigResponse, len(o.ServiceConfigs))
+		for k2, v2 := range o.ServiceConfigs {
+			var cp_ServiceConfigs_v2 *structs.ServiceConfigResponse
+			if v2 != nil {
+				cp_ServiceConfigs_v2 = v2.DeepCopy()
+			}
+			cp.ServiceConfigs[k2] = cp_ServiceConfigs_v2
+		}
+	}
+	if o.WatchedResolvers != nil {
+		cp.WatchedResolvers = make(map[structs.ServiceName]context.CancelFunc, len(o.WatchedResolvers))
+		for k2, v2 := range o.WatchedResolvers {
+			cp.WatchedResolvers[k2] = v2
+		}
+	}
+	if o.ServiceResolvers != nil {
+		cp.ServiceResolvers = make(map[structs.ServiceName]*structs.ServiceResolverConfigEntry, len(o.ServiceResolvers))
+		for k2, v2 := range o.ServiceResolvers {
+			var cp_ServiceResolvers_v2 *structs.ServiceResolverConfigEntry
+			if v2 != nil {
+				cp_ServiceResolvers_v2 = v2.DeepCopy()
+			}
+			cp.ServiceResolvers[k2] = cp_ServiceResolvers_v2
+		}
+	}
+	if o.ServiceResolversSet != nil {
+		cp.ServiceResolversSet = make(map[structs.ServiceName]bool, len(o.ServiceResolversSet))
+		for k2, v2 := range o.ServiceResolversSet {
+			cp.ServiceResolversSet[k2] = v2
+		}
+	}
+	if o.ServiceGroups != nil {
+		cp.ServiceGroups = make(map[structs.ServiceName]structs.CheckServiceNodes, len(o.ServiceGroups))
+		for k2, v2 := range o.ServiceGroups {
+			var cp_ServiceGroups_v2 structs.CheckServiceNodes
+			cp_ServiceGroups_v2 = v2.DeepCopy()
+			cp.ServiceGroups[k2] = cp_ServiceGroups_v2
+		}
+	}
+	if o.GatewayServices != nil {
+		cp.GatewayServices = make(map[structs.ServiceName]structs.GatewayService, len(o.GatewayServices))
+		for k2, v2 := range o.GatewayServices {
+			var cp_GatewayServices_v2 structs.GatewayService
+			{
+				retV := v2.DeepCopy()
+				cp_GatewayServices_v2 = *retV
+			}
+			cp.GatewayServices[k2] = cp_GatewayServices_v2
+		}
+	}
+	if o.DestinationServices != nil {
+		cp.DestinationServices = make(map[structs.ServiceName]structs.GatewayService, len(o.DestinationServices))
+		for k2, v2 := range o.DestinationServices {
+			var cp_DestinationServices_v2 structs.GatewayService
+			{
+				retV := v2.DeepCopy()
+				cp_DestinationServices_v2 = *retV
+			}
+			cp.DestinationServices[k2] = cp_DestinationServices_v2
+		}
+	}
+	if o.HostnameServices != nil {
+		cp.HostnameServices = make(map[structs.ServiceName]structs.CheckServiceNodes, len(o.HostnameServices))
+		for k2, v2 := range o.HostnameServices {
+			var cp_HostnameServices_v2 structs.CheckServiceNodes
+			cp_HostnameServices_v2 = v2.DeepCopy()
+			cp.HostnameServices[k2] = cp_HostnameServices_v2
+		}
+	}
+	return &cp
+}

agent/proxycfg/proxycfg.go

@@ -50,4 +50,5 @@
 //  7. It registers the service with the proxycfg manager.
 // 7a. See: 2a.
 //  8. xDS server receives snapshots of configuration data whenever it changes.
+//
 package proxycfg

agent/proxycfg/snapshot.go

@@ -6,8 +6,6 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/mitchellh/copystructure"
-
 	"github.com/hashicorp/consul/acl"
 	"github.com/hashicorp/consul/agent/proxycfg/internal/watch"
 	"github.com/hashicorp/consul/agent/structs"
@@ -764,13 +762,8 @@ func (s *ConfigSnapshot) Valid() bool {
 
 // Clone makes a deep copy of the snapshot we can send to other goroutines
 // without worrying that they will racily read or mutate shared maps etc.
-func (s *ConfigSnapshot) Clone() (*ConfigSnapshot, error) {
-	snapCopy, err := copystructure.Copy(s)
-	if err != nil {
-		return nil, err
-	}
-
-	snap := snapCopy.(*ConfigSnapshot)
+func (s *ConfigSnapshot) Clone() *ConfigSnapshot {
+	snap := s.DeepCopy()
 
 	// nil these out as anything receiving one of these clones does not need them and should never "cancel" our watches
 	switch s.Kind {
@@ -797,7 +790,7 @@ func (s *ConfigSnapshot) Clone() (*ConfigSnapshot, error) {
 		snap.IngressGateway.LeafCertWatchCancel = nil
 	}
 
-	return snap, nil
+	return snap
 }
 
 func (s *ConfigSnapshot) Leaf() *structs.IssuedCert {

agent/proxycfg/snapshot_test.go

@@ -0,0 +1,52 @@
+package proxycfg
+
+import (
+	"context"
+	"regexp"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
+	fuzz "github.com/google/gofuzz"
+	"github.com/hashicorp/consul/proto/pbpeering"
+)
+
+func TestConfigSnapshot_Clone(t *testing.T) {
+	// ConfigSnapshot is a complex struct that (directly or indirectly) has a copy
+	// of most of the structs in the agent/structs package. It'd be easy to break
+	// the Clone method accidentally by changing one of those distant structs, so
+	// we test it by using a fuzzer to traverse the graph and fill every field and
+	// then compare the original to the copy.
+	f := fuzz.New()
+	f.NilChance(0)
+	f.NumElements(1, 3)
+	f.SkipFieldsWithPattern(regexp.MustCompile("^ServerSNIFn$"))
+
+	f.Funcs(
+		// Populate map[string]interface{} since gofuzz panics on these. We force them
+		// to be any rather than concrete types otherwise they won't compare equal when
+		// coming back out the other side.
+		func(m map[string]any, c fuzz.Continue) {
+			m[c.RandString()] = any(float64(c.RandUint64()))
+			m[c.RandString()] = any(c.RandString())
+			m[c.RandString()] = any([]any{c.RandString(), c.RandString()})
+			m[c.RandString()] = any(map[string]any{c.RandString(): c.RandString()})
+		},
+		func(*context.CancelFunc, fuzz.Continue) {},
+	)
+
+	snapshot := new(ConfigSnapshot)
+	f.Fuzz(snapshot)
+
+	clone := snapshot.Clone()
+
+	diff := cmp.Diff(snapshot, clone,
+		cmpopts.IgnoreUnexported(indexedTarget{}),
+		cmpopts.IgnoreUnexported(pbpeering.PeeringTrustBundle{}),
+		cmpopts.IgnoreTypes(context.CancelFunc(nil)),
+	)
+	if diff != "" {
+		t.Logf("Copied snaspshot is different to the original. You may need to re-run `make deep-copy`.\nDiff:\n%s", diff)
+		t.FailNow()
+	}
+}

agent/proxycfg/state.go

@@ -10,7 +10,6 @@ import (
 	"time"
 
 	"github.com/hashicorp/go-hclog"
-	"github.com/mitchellh/copystructure"
 
 	cachetype "github.com/hashicorp/consul/agent/cache-types"
 	"github.com/hashicorp/consul/agent/structs"
@@ -111,15 +110,8 @@ func copyProxyConfig(ns *structs.NodeService) (structs.ConnectProxyConfig, error
 	if ns == nil {
 		return structs.ConnectProxyConfig{}, nil
 	}
-	// Copy the config map
-	proxyCfgRaw, err := copystructure.Copy(ns.Proxy)
-	if err != nil {
-		return structs.ConnectProxyConfig{}, err
-	}
-	proxyCfg, ok := proxyCfgRaw.(structs.ConnectProxyConfig)
-	if !ok {
-		return structs.ConnectProxyConfig{}, errors.New("failed to copy proxy config")
-	}
+
+	proxyCfg := *(&ns.Proxy).DeepCopy()
 
 	// we can safely modify these since we just copied them
 	for idx := range proxyCfg.Upstreams {
@@ -336,11 +328,7 @@ func (s *state) run(ctx context.Context, snap *ConfigSnapshot) {
 			coalesceTimer = nil
 			// Make a deep copy of snap so we don't mutate any of the embedded structs
 			// etc on future updates.
-			snapCopy, err := snap.Clone()
-			if err != nil {
-				s.logger.Error("Failed to copy config snapshot for proxy", "error", err)
-				continue
-			}
+			snapCopy := snap.Clone()
 
 			select {
 			// Try to send
@@ -377,12 +365,7 @@ func (s *state) run(ctx context.Context, snap *ConfigSnapshot) {
 			}
 			// Make a deep copy of snap so we don't mutate any of the embedded structs
 			// etc on future updates.
-			snapCopy, err := snap.Clone()
-			if err != nil {
-				s.logger.Error("Failed to copy config snapshot for proxy", "error", err)
-				continue
-			}
-			replyCh <- snapCopy
+			replyCh <- snap.Clone()
 
 			// Skip rest of loop - there is nothing to send since nothing changed on
 			// this iteration

agent/structs/deep-copy.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+readonly PACKAGE_DIR="$(dirname "${BASH_SOURCE[0]}")"
+cd $PACKAGE_DIR
+
+# Uses: https://github.com/globusdigital/deep-copy
+deep-copy \
+  -pointer-receiver \
+  -o ./structs.deepcopy.go \
+  -type CARoot \
+  -type CheckServiceNode \
+  -type CheckType \
+  -type CompiledDiscoveryChain \
+  -type ConnectProxyConfig \
+  -type DiscoveryFailover \
+  -type DiscoveryGraphNode \
+  -type DiscoveryResolver \
+  -type DiscoveryRoute \
+  -type DiscoverySplit \
+  -type ExposeConfig \
+  -type GatewayService \
+  -type GatewayServiceTLSConfig \
+  -type HTTPHeaderModifiers \
+  -type HashPolicy \
+  -type HealthCheck \
+  -type IndexedCARoots \
+  -type IngressListener \
+  -type Intention \
+  -type IntentionPermission \
+  -type LoadBalancer \
+  -type MeshConfigEntry \
+  -type MeshDirectionalTLSConfig \
+  -type MeshTLSConfig \
+  -type Node \
+  -type NodeService \
+  -type PeeringServiceMeta \
+  -type ServiceConfigEntry \
+  -type ServiceConfigResponse \
+  -type ServiceConnect \
+  -type ServiceDefinition \
+  -type ServiceResolverConfigEntry \
+  -type ServiceResolverFailover \
+  -type ServiceRoute \
+  -type ServiceRouteDestination \
+  -type ServiceRouteMatch \
+  -type Upstream \
+  -type UpstreamConfiguration \
+  ./

agent/structs/structs.deepcopy.go

@@ -0,0 +1,838 @@
+// generated by deep-copy -pointer-receiver -o ./structs.deepcopy.go -type CARoot -type CheckServiceNode -type CheckType -type CompiledDiscoveryChain -type ConnectProxyConfig -type DiscoveryFailover -type DiscoveryGraphNode -type DiscoveryResolver -type DiscoveryRoute -type DiscoverySplit -type ExposeConfig -type GatewayService -type GatewayServiceTLSConfig -type HTTPHeaderModifiers -type HashPolicy -type HealthCheck -type IndexedCARoots -type IngressListener -type Intention -type IntentionPermission -type LoadBalancer -type MeshConfigEntry -type MeshDirectionalTLSConfig -type MeshTLSConfig -type Node -type NodeService -type PeeringServiceMeta -type ServiceConfigEntry -type ServiceConfigResponse -type ServiceConnect -type ServiceDefinition -type ServiceResolverConfigEntry -type ServiceResolverFailover -type ServiceRoute -type ServiceRouteDestination -type ServiceRouteMatch -type Upstream -type UpstreamConfiguration ./; DO NOT EDIT.
+
+package structs
+
+import (
+	"github.com/hashicorp/consul/types"
+)
+
+// DeepCopy generates a deep copy of *CARoot
+func (o *CARoot) DeepCopy() *CARoot {
+	var cp CARoot = *o
+	if o.IntermediateCerts != nil {
+		cp.IntermediateCerts = make([]string, len(o.IntermediateCerts))
+		copy(cp.IntermediateCerts, o.IntermediateCerts)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *CheckServiceNode
+func (o *CheckServiceNode) DeepCopy() *CheckServiceNode {
+	var cp CheckServiceNode = *o
+	if o.Node != nil {
+		cp.Node = o.Node.DeepCopy()
+	}
+	if o.Service != nil {
+		cp.Service = o.Service.DeepCopy()
+	}
+	if o.Checks != nil {
+		cp.Checks = make([]*HealthCheck, len(o.Checks))
+		copy(cp.Checks, o.Checks)
+		for i2 := range o.Checks {
+			if o.Checks[i2] != nil {
+				cp.Checks[i2] = o.Checks[i2].DeepCopy()
+			}
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *CheckType
+func (o *CheckType) DeepCopy() *CheckType {
+	var cp CheckType = *o
+	if o.ScriptArgs != nil {
+		cp.ScriptArgs = make([]string, len(o.ScriptArgs))
+		copy(cp.ScriptArgs, o.ScriptArgs)
+	}
+	if o.Header != nil {
+		cp.Header = make(map[string][]string, len(o.Header))
+		for k2, v2 := range o.Header {
+			var cp_Header_v2 []string
+			if v2 != nil {
+				cp_Header_v2 = make([]string, len(v2))
+				copy(cp_Header_v2, v2)
+			}
+			cp.Header[k2] = cp_Header_v2
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *CompiledDiscoveryChain
+func (o *CompiledDiscoveryChain) DeepCopy() *CompiledDiscoveryChain {
+	var cp CompiledDiscoveryChain = *o
+	if o.ServiceMeta != nil {
+		cp.ServiceMeta = make(map[string]string, len(o.ServiceMeta))
+		for k2, v2 := range o.ServiceMeta {
+			cp.ServiceMeta[k2] = v2
+		}
+	}
+	if o.Nodes != nil {
+		cp.Nodes = make(map[string]*DiscoveryGraphNode, len(o.Nodes))
+		for k2, v2 := range o.Nodes {
+			var cp_Nodes_v2 *DiscoveryGraphNode
+			if v2 != nil {
+				cp_Nodes_v2 = v2.DeepCopy()
+			}
+			cp.Nodes[k2] = cp_Nodes_v2
+		}
+	}
+	if o.Targets != nil {
+		cp.Targets = make(map[string]*DiscoveryTarget, len(o.Targets))
+		for k2, v2 := range o.Targets {
+			var cp_Targets_v2 *DiscoveryTarget
+			if v2 != nil {
+				cp_Targets_v2 = new(DiscoveryTarget)
+				*cp_Targets_v2 = *v2
+			}
+			cp.Targets[k2] = cp_Targets_v2
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ConnectProxyConfig
+func (o *ConnectProxyConfig) DeepCopy() *ConnectProxyConfig {
+	var cp ConnectProxyConfig = *o
+	if o.Config != nil {
+		cp.Config = make(map[string]interface{}, len(o.Config))
+		for k2, v2 := range o.Config {
+			cp.Config[k2] = v2
+		}
+	}
+	if o.Upstreams != nil {
+		cp.Upstreams = make([]Upstream, len(o.Upstreams))
+		copy(cp.Upstreams, o.Upstreams)
+		for i2 := range o.Upstreams {
+			{
+				retV := o.Upstreams[i2].DeepCopy()
+				cp.Upstreams[i2] = *retV
+			}
+		}
+	}
+	{
+		retV := o.Expose.DeepCopy()
+		cp.Expose = *retV
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *DiscoveryFailover
+func (o *DiscoveryFailover) DeepCopy() *DiscoveryFailover {
+	var cp DiscoveryFailover = *o
+	if o.Targets != nil {
+		cp.Targets = make([]string, len(o.Targets))
+		copy(cp.Targets, o.Targets)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *DiscoveryGraphNode
+func (o *DiscoveryGraphNode) DeepCopy() *DiscoveryGraphNode {
+	var cp DiscoveryGraphNode = *o
+	if o.Routes != nil {
+		cp.Routes = make([]*DiscoveryRoute, len(o.Routes))
+		copy(cp.Routes, o.Routes)
+		for i2 := range o.Routes {
+			if o.Routes[i2] != nil {
+				cp.Routes[i2] = o.Routes[i2].DeepCopy()
+			}
+		}
+	}
+	if o.Splits != nil {
+		cp.Splits = make([]*DiscoverySplit, len(o.Splits))
+		copy(cp.Splits, o.Splits)
+		for i2 := range o.Splits {
+			if o.Splits[i2] != nil {
+				cp.Splits[i2] = o.Splits[i2].DeepCopy()
+			}
+		}
+	}
+	if o.Resolver != nil {
+		cp.Resolver = o.Resolver.DeepCopy()
+	}
+	if o.LoadBalancer != nil {
+		cp.LoadBalancer = o.LoadBalancer.DeepCopy()
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *DiscoveryResolver
+func (o *DiscoveryResolver) DeepCopy() *DiscoveryResolver {
+	var cp DiscoveryResolver = *o
+	if o.Failover != nil {
+		cp.Failover = o.Failover.DeepCopy()
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *DiscoveryRoute
+func (o *DiscoveryRoute) DeepCopy() *DiscoveryRoute {
+	var cp DiscoveryRoute = *o
+	if o.Definition != nil {
+		cp.Definition = o.Definition.DeepCopy()
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *DiscoverySplit
+func (o *DiscoverySplit) DeepCopy() *DiscoverySplit {
+	var cp DiscoverySplit = *o
+	if o.Definition != nil {
+		cp.Definition = new(ServiceSplit)
+		*cp.Definition = *o.Definition
+		if o.Definition.RequestHeaders != nil {
+			cp.Definition.RequestHeaders = o.Definition.RequestHeaders.DeepCopy()
+		}
+		if o.Definition.ResponseHeaders != nil {
+			cp.Definition.ResponseHeaders = o.Definition.ResponseHeaders.DeepCopy()
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ExposeConfig
+func (o *ExposeConfig) DeepCopy() *ExposeConfig {
+	var cp ExposeConfig = *o
+	if o.Paths != nil {
+		cp.Paths = make([]ExposePath, len(o.Paths))
+		copy(cp.Paths, o.Paths)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *GatewayService
+func (o *GatewayService) DeepCopy() *GatewayService {
+	var cp GatewayService = *o
+	if o.Hosts != nil {
+		cp.Hosts = make([]string, len(o.Hosts))
+		copy(cp.Hosts, o.Hosts)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *GatewayServiceTLSConfig
+func (o *GatewayServiceTLSConfig) DeepCopy() *GatewayServiceTLSConfig {
+	var cp GatewayServiceTLSConfig = *o
+	if o.SDS != nil {
+		cp.SDS = new(GatewayTLSSDSConfig)
+		*cp.SDS = *o.SDS
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *HTTPHeaderModifiers
+func (o *HTTPHeaderModifiers) DeepCopy() *HTTPHeaderModifiers {
+	var cp HTTPHeaderModifiers = *o
+	if o.Add != nil {
+		cp.Add = make(map[string]string, len(o.Add))
+		for k2, v2 := range o.Add {
+			cp.Add[k2] = v2
+		}
+	}
+	if o.Set != nil {
+		cp.Set = make(map[string]string, len(o.Set))
+		for k2, v2 := range o.Set {
+			cp.Set[k2] = v2
+		}
+	}
+	if o.Remove != nil {
+		cp.Remove = make([]string, len(o.Remove))
+		copy(cp.Remove, o.Remove)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *HashPolicy
+func (o *HashPolicy) DeepCopy() *HashPolicy {
+	var cp HashPolicy = *o
+	if o.CookieConfig != nil {
+		cp.CookieConfig = new(CookieConfig)
+		*cp.CookieConfig = *o.CookieConfig
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *HealthCheck
+func (o *HealthCheck) DeepCopy() *HealthCheck {
+	var cp HealthCheck = *o
+	if o.ServiceTags != nil {
+		cp.ServiceTags = make([]string, len(o.ServiceTags))
+		copy(cp.ServiceTags, o.ServiceTags)
+	}
+	if o.Definition.Header != nil {
+		cp.Definition.Header = make(map[string][]string, len(o.Definition.Header))
+		for k3, v3 := range o.Definition.Header {
+			var cp_Definition_Header_v3 []string
+			if v3 != nil {
+				cp_Definition_Header_v3 = make([]string, len(v3))
+				copy(cp_Definition_Header_v3, v3)
+			}
+			cp.Definition.Header[k3] = cp_Definition_Header_v3
+		}
+	}
+	if o.Definition.ScriptArgs != nil {
+		cp.Definition.ScriptArgs = make([]string, len(o.Definition.ScriptArgs))
+		copy(cp.Definition.ScriptArgs, o.Definition.ScriptArgs)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *IndexedCARoots
+func (o *IndexedCARoots) DeepCopy() *IndexedCARoots {
+	var cp IndexedCARoots = *o
+	if o.Roots != nil {
+		cp.Roots = make([]*CARoot, len(o.Roots))
+		copy(cp.Roots, o.Roots)
+		for i2 := range o.Roots {
+			if o.Roots[i2] != nil {
+				cp.Roots[i2] = o.Roots[i2].DeepCopy()
+			}
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *IngressListener
+func (o *IngressListener) DeepCopy() *IngressListener {
+	var cp IngressListener = *o
+	if o.TLS != nil {
+		cp.TLS = new(GatewayTLSConfig)
+		*cp.TLS = *o.TLS
+		if o.TLS.SDS != nil {
+			cp.TLS.SDS = new(GatewayTLSSDSConfig)
+			*cp.TLS.SDS = *o.TLS.SDS
+		}
+		if o.TLS.CipherSuites != nil {
+			cp.TLS.CipherSuites = make([]types.TLSCipherSuite, len(o.TLS.CipherSuites))
+			copy(cp.TLS.CipherSuites, o.TLS.CipherSuites)
+		}
+	}
+	if o.Services != nil {
+		cp.Services = make([]IngressService, len(o.Services))
+		copy(cp.Services, o.Services)
+		for i2 := range o.Services {
+			if o.Services[i2].Hosts != nil {
+				cp.Services[i2].Hosts = make([]string, len(o.Services[i2].Hosts))
+				copy(cp.Services[i2].Hosts, o.Services[i2].Hosts)
+			}
+			if o.Services[i2].TLS != nil {
+				cp.Services[i2].TLS = o.Services[i2].TLS.DeepCopy()
+			}
+			if o.Services[i2].RequestHeaders != nil {
+				cp.Services[i2].RequestHeaders = o.Services[i2].RequestHeaders.DeepCopy()
+			}
+			if o.Services[i2].ResponseHeaders != nil {
+				cp.Services[i2].ResponseHeaders = o.Services[i2].ResponseHeaders.DeepCopy()
+			}
+			if o.Services[i2].Meta != nil {
+				cp.Services[i2].Meta = make(map[string]string, len(o.Services[i2].Meta))
+				for k4, v4 := range o.Services[i2].Meta {
+					cp.Services[i2].Meta[k4] = v4
+				}
+			}
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *Intention
+func (o *Intention) DeepCopy() *Intention {
+	var cp Intention = *o
+	if o.Permissions != nil {
+		cp.Permissions = make([]*IntentionPermission, len(o.Permissions))
+		copy(cp.Permissions, o.Permissions)
+		for i2 := range o.Permissions {
+			if o.Permissions[i2] != nil {
+				cp.Permissions[i2] = o.Permissions[i2].DeepCopy()
+			}
+		}
+	}
+	if o.Meta != nil {
+		cp.Meta = make(map[string]string, len(o.Meta))
+		for k2, v2 := range o.Meta {
+			cp.Meta[k2] = v2
+		}
+	}
+	if o.Hash != nil {
+		cp.Hash = make([]byte, len(o.Hash))
+		copy(cp.Hash, o.Hash)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *IntentionPermission
+func (o *IntentionPermission) DeepCopy() *IntentionPermission {
+	var cp IntentionPermission = *o
+	if o.HTTP != nil {
+		cp.HTTP = new(IntentionHTTPPermission)
+		*cp.HTTP = *o.HTTP
+		if o.HTTP.Header != nil {
+			cp.HTTP.Header = make([]IntentionHTTPHeaderPermission, len(o.HTTP.Header))
+			copy(cp.HTTP.Header, o.HTTP.Header)
+		}
+		if o.HTTP.Methods != nil {
+			cp.HTTP.Methods = make([]string, len(o.HTTP.Methods))
+			copy(cp.HTTP.Methods, o.HTTP.Methods)
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *LoadBalancer
+func (o *LoadBalancer) DeepCopy() *LoadBalancer {
+	var cp LoadBalancer = *o
+	if o.RingHashConfig != nil {
+		cp.RingHashConfig = new(RingHashConfig)
+		*cp.RingHashConfig = *o.RingHashConfig
+	}
+	if o.LeastRequestConfig != nil {
+		cp.LeastRequestConfig = new(LeastRequestConfig)
+		*cp.LeastRequestConfig = *o.LeastRequestConfig
+	}
+	if o.HashPolicies != nil {
+		cp.HashPolicies = make([]HashPolicy, len(o.HashPolicies))
+		copy(cp.HashPolicies, o.HashPolicies)
+		for i2 := range o.HashPolicies {
+			{
+				retV := o.HashPolicies[i2].DeepCopy()
+				cp.HashPolicies[i2] = *retV
+			}
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *MeshConfigEntry
+func (o *MeshConfigEntry) DeepCopy() *MeshConfigEntry {
+	var cp MeshConfigEntry = *o
+	if o.TLS != nil {
+		cp.TLS = o.TLS.DeepCopy()
+	}
+	if o.HTTP != nil {
+		cp.HTTP = new(MeshHTTPConfig)
+		*cp.HTTP = *o.HTTP
+	}
+	if o.Peering != nil {
+		cp.Peering = new(PeeringMeshConfig)
+		*cp.Peering = *o.Peering
+	}
+	if o.Meta != nil {
+		cp.Meta = make(map[string]string, len(o.Meta))
+		for k2, v2 := range o.Meta {
+			cp.Meta[k2] = v2
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *MeshDirectionalTLSConfig
+func (o *MeshDirectionalTLSConfig) DeepCopy() *MeshDirectionalTLSConfig {
+	var cp MeshDirectionalTLSConfig = *o
+	if o.CipherSuites != nil {
+		cp.CipherSuites = make([]types.TLSCipherSuite, len(o.CipherSuites))
+		copy(cp.CipherSuites, o.CipherSuites)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *MeshTLSConfig
+func (o *MeshTLSConfig) DeepCopy() *MeshTLSConfig {
+	var cp MeshTLSConfig = *o
+	if o.Incoming != nil {
+		cp.Incoming = o.Incoming.DeepCopy()
+	}
+	if o.Outgoing != nil {
+		cp.Outgoing = o.Outgoing.DeepCopy()
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *Node
+func (o *Node) DeepCopy() *Node {
+	var cp Node = *o
+	if o.TaggedAddresses != nil {
+		cp.TaggedAddresses = make(map[string]string, len(o.TaggedAddresses))
+		for k2, v2 := range o.TaggedAddresses {
+			cp.TaggedAddresses[k2] = v2
+		}
+	}
+	if o.Meta != nil {
+		cp.Meta = make(map[string]string, len(o.Meta))
+		for k2, v2 := range o.Meta {
+			cp.Meta[k2] = v2
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *NodeService
+func (o *NodeService) DeepCopy() *NodeService {
+	var cp NodeService = *o
+	if o.Tags != nil {
+		cp.Tags = make([]string, len(o.Tags))
+		copy(cp.Tags, o.Tags)
+	}
+	if o.TaggedAddresses != nil {
+		cp.TaggedAddresses = make(map[string]ServiceAddress, len(o.TaggedAddresses))
+		for k2, v2 := range o.TaggedAddresses {
+			cp.TaggedAddresses[k2] = v2
+		}
+	}
+	if o.Meta != nil {
+		cp.Meta = make(map[string]string, len(o.Meta))
+		for k2, v2 := range o.Meta {
+			cp.Meta[k2] = v2
+		}
+	}
+	if o.Weights != nil {
+		cp.Weights = new(Weights)
+		*cp.Weights = *o.Weights
+	}
+	{
+		retV := o.Proxy.DeepCopy()
+		cp.Proxy = *retV
+	}
+	{
+		retV := o.Connect.DeepCopy()
+		cp.Connect = *retV
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *PeeringServiceMeta
+func (o *PeeringServiceMeta) DeepCopy() *PeeringServiceMeta {
+	var cp PeeringServiceMeta = *o
+	if o.SNI != nil {
+		cp.SNI = make([]string, len(o.SNI))
+		copy(cp.SNI, o.SNI)
+	}
+	if o.SpiffeID != nil {
+		cp.SpiffeID = make([]string, len(o.SpiffeID))
+		copy(cp.SpiffeID, o.SpiffeID)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ServiceConfigEntry
+func (o *ServiceConfigEntry) DeepCopy() *ServiceConfigEntry {
+	var cp ServiceConfigEntry = *o
+	{
+		retV := o.Expose.DeepCopy()
+		cp.Expose = *retV
+	}
+	if o.UpstreamConfig != nil {
+		cp.UpstreamConfig = o.UpstreamConfig.DeepCopy()
+	}
+	if o.Destination != nil {
+		cp.Destination = new(DestinationConfig)
+		*cp.Destination = *o.Destination
+		if o.Destination.Addresses != nil {
+			cp.Destination.Addresses = make([]string, len(o.Destination.Addresses))
+			copy(cp.Destination.Addresses, o.Destination.Addresses)
+		}
+	}
+	if o.Meta != nil {
+		cp.Meta = make(map[string]string, len(o.Meta))
+		for k2, v2 := range o.Meta {
+			cp.Meta[k2] = v2
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ServiceConfigResponse
+func (o *ServiceConfigResponse) DeepCopy() *ServiceConfigResponse {
+	var cp ServiceConfigResponse = *o
+	if o.ProxyConfig != nil {
+		cp.ProxyConfig = make(map[string]interface{}, len(o.ProxyConfig))
+		for k2, v2 := range o.ProxyConfig {
+			cp.ProxyConfig[k2] = v2
+		}
+	}
+	if o.UpstreamConfigs != nil {
+		cp.UpstreamConfigs = make(map[string]map[string]interface{}, len(o.UpstreamConfigs))
+		for k2, v2 := range o.UpstreamConfigs {
+			var cp_UpstreamConfigs_v2 map[string]interface{}
+			if v2 != nil {
+				cp_UpstreamConfigs_v2 = make(map[string]interface{}, len(v2))
+				for k3, v3 := range v2 {
+					cp_UpstreamConfigs_v2[k3] = v3
+				}
+			}
+			cp.UpstreamConfigs[k2] = cp_UpstreamConfigs_v2
+		}
+	}
+	if o.UpstreamIDConfigs != nil {
+		cp.UpstreamIDConfigs = make([]OpaqueUpstreamConfig, len(o.UpstreamIDConfigs))
+		copy(cp.UpstreamIDConfigs, o.UpstreamIDConfigs)
+		for i2 := range o.UpstreamIDConfigs {
+			if o.UpstreamIDConfigs[i2].Config != nil {
+				cp.UpstreamIDConfigs[i2].Config = make(map[string]interface{}, len(o.UpstreamIDConfigs[i2].Config))
+				for k4, v4 := range o.UpstreamIDConfigs[i2].Config {
+					cp.UpstreamIDConfigs[i2].Config[k4] = v4
+				}
+			}
+		}
+	}
+	{
+		retV := o.Expose.DeepCopy()
+		cp.Expose = *retV
+	}
+	if o.Destination.Addresses != nil {
+		cp.Destination.Addresses = make([]string, len(o.Destination.Addresses))
+		copy(cp.Destination.Addresses, o.Destination.Addresses)
+	}
+	if o.Meta != nil {
+		cp.Meta = make(map[string]string, len(o.Meta))
+		for k2, v2 := range o.Meta {
+			cp.Meta[k2] = v2
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ServiceConnect
+func (o *ServiceConnect) DeepCopy() *ServiceConnect {
+	var cp ServiceConnect = *o
+	if o.SidecarService != nil {
+		cp.SidecarService = o.SidecarService.DeepCopy()
+	}
+	if o.PeerMeta != nil {
+		cp.PeerMeta = o.PeerMeta.DeepCopy()
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ServiceDefinition
+func (o *ServiceDefinition) DeepCopy() *ServiceDefinition {
+	var cp ServiceDefinition = *o
+	if o.Tags != nil {
+		cp.Tags = make([]string, len(o.Tags))
+		copy(cp.Tags, o.Tags)
+	}
+	if o.TaggedAddresses != nil {
+		cp.TaggedAddresses = make(map[string]ServiceAddress, len(o.TaggedAddresses))
+		for k2, v2 := range o.TaggedAddresses {
+			cp.TaggedAddresses[k2] = v2
+		}
+	}
+	if o.Meta != nil {
+		cp.Meta = make(map[string]string, len(o.Meta))
+		for k2, v2 := range o.Meta {
+			cp.Meta[k2] = v2
+		}
+	}
+	{
+		retV := o.Check.DeepCopy()
+		cp.Check = *retV
+	}
+	if o.Checks != nil {
+		cp.Checks = make([]*CheckType, len(o.Checks))
+		copy(cp.Checks, o.Checks)
+		for i2 := range o.Checks {
+			if o.Checks[i2] != nil {
+				cp.Checks[i2] = o.Checks[i2].DeepCopy()
+			}
+		}
+	}
+	if o.Weights != nil {
+		cp.Weights = new(Weights)
+		*cp.Weights = *o.Weights
+	}
+	if o.Proxy != nil {
+		cp.Proxy = o.Proxy.DeepCopy()
+	}
+	if o.Connect != nil {
+		cp.Connect = o.Connect.DeepCopy()
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ServiceResolverConfigEntry
+func (o *ServiceResolverConfigEntry) DeepCopy() *ServiceResolverConfigEntry {
+	var cp ServiceResolverConfigEntry = *o
+	if o.Subsets != nil {
+		cp.Subsets = make(map[string]ServiceResolverSubset, len(o.Subsets))
+		for k2, v2 := range o.Subsets {
+			cp.Subsets[k2] = v2
+		}
+	}
+	if o.Redirect != nil {
+		cp.Redirect = new(ServiceResolverRedirect)
+		*cp.Redirect = *o.Redirect
+	}
+	if o.Failover != nil {
+		cp.Failover = make(map[string]ServiceResolverFailover, len(o.Failover))
+		for k2, v2 := range o.Failover {
+			var cp_Failover_v2 ServiceResolverFailover
+			{
+				retV := v2.DeepCopy()
+				cp_Failover_v2 = *retV
+			}
+			cp.Failover[k2] = cp_Failover_v2
+		}
+	}
+	if o.LoadBalancer != nil {
+		cp.LoadBalancer = o.LoadBalancer.DeepCopy()
+	}
+	if o.Meta != nil {
+		cp.Meta = make(map[string]string, len(o.Meta))
+		for k2, v2 := range o.Meta {
+			cp.Meta[k2] = v2
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ServiceResolverFailover
+func (o *ServiceResolverFailover) DeepCopy() *ServiceResolverFailover {
+	var cp ServiceResolverFailover = *o
+	if o.Datacenters != nil {
+		cp.Datacenters = make([]string, len(o.Datacenters))
+		copy(cp.Datacenters, o.Datacenters)
+	}
+	if o.Targets != nil {
+		cp.Targets = make([]ServiceResolverFailoverTarget, len(o.Targets))
+		copy(cp.Targets, o.Targets)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ServiceRoute
+func (o *ServiceRoute) DeepCopy() *ServiceRoute {
+	var cp ServiceRoute = *o
+	if o.Match != nil {
+		cp.Match = o.Match.DeepCopy()
+	}
+	if o.Destination != nil {
+		cp.Destination = o.Destination.DeepCopy()
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ServiceRouteDestination
+func (o *ServiceRouteDestination) DeepCopy() *ServiceRouteDestination {
+	var cp ServiceRouteDestination = *o
+	if o.RetryOn != nil {
+		cp.RetryOn = make([]string, len(o.RetryOn))
+		copy(cp.RetryOn, o.RetryOn)
+	}
+	if o.RetryOnStatusCodes != nil {
+		cp.RetryOnStatusCodes = make([]uint32, len(o.RetryOnStatusCodes))
+		copy(cp.RetryOnStatusCodes, o.RetryOnStatusCodes)
+	}
+	if o.RequestHeaders != nil {
+		cp.RequestHeaders = o.RequestHeaders.DeepCopy()
+	}
+	if o.ResponseHeaders != nil {
+		cp.ResponseHeaders = o.ResponseHeaders.DeepCopy()
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *ServiceRouteMatch
+func (o *ServiceRouteMatch) DeepCopy() *ServiceRouteMatch {
+	var cp ServiceRouteMatch = *o
+	if o.HTTP != nil {
+		cp.HTTP = new(ServiceRouteHTTPMatch)
+		*cp.HTTP = *o.HTTP
+		if o.HTTP.Header != nil {
+			cp.HTTP.Header = make([]ServiceRouteHTTPMatchHeader, len(o.HTTP.Header))
+			copy(cp.HTTP.Header, o.HTTP.Header)
+		}
+		if o.HTTP.QueryParam != nil {
+			cp.HTTP.QueryParam = make([]ServiceRouteHTTPMatchQueryParam, len(o.HTTP.QueryParam))
+			copy(cp.HTTP.QueryParam, o.HTTP.QueryParam)
+		}
+		if o.HTTP.Methods != nil {
+			cp.HTTP.Methods = make([]string, len(o.HTTP.Methods))
+			copy(cp.HTTP.Methods, o.HTTP.Methods)
+		}
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *Upstream
+func (o *Upstream) DeepCopy() *Upstream {
+	var cp Upstream = *o
+	if o.Config != nil {
+		cp.Config = make(map[string]interface{}, len(o.Config))
+		for k2, v2 := range o.Config {
+			cp.Config[k2] = v2
+		}
+	}
+	if o.IngressHosts != nil {
+		cp.IngressHosts = make([]string, len(o.IngressHosts))
+		copy(cp.IngressHosts, o.IngressHosts)
+	}
+	return &cp
+}
+
+// DeepCopy generates a deep copy of *UpstreamConfiguration
+func (o *UpstreamConfiguration) DeepCopy() *UpstreamConfiguration {
+	var cp UpstreamConfiguration = *o
+	if o.Overrides != nil {
+		cp.Overrides = make([]*UpstreamConfig, len(o.Overrides))
+		copy(cp.Overrides, o.Overrides)
+		for i2 := range o.Overrides {
+			if o.Overrides[i2] != nil {
+				cp.Overrides[i2] = new(UpstreamConfig)
+				*cp.Overrides[i2] = *o.Overrides[i2]
+				if o.Overrides[i2].Limits != nil {
+					cp.Overrides[i2].Limits = new(UpstreamLimits)
+					*cp.Overrides[i2].Limits = *o.Overrides[i2].Limits
+					if o.Overrides[i2].Limits.MaxConnections != nil {
+						cp.Overrides[i2].Limits.MaxConnections = new(int)
+						*cp.Overrides[i2].Limits.MaxConnections = *o.Overrides[i2].Limits.MaxConnections
+					}
+					if o.Overrides[i2].Limits.MaxPendingRequests != nil {
+						cp.Overrides[i2].Limits.MaxPendingRequests = new(int)
+						*cp.Overrides[i2].Limits.MaxPendingRequests = *o.Overrides[i2].Limits.MaxPendingRequests
+					}
+					if o.Overrides[i2].Limits.MaxConcurrentRequests != nil {
+						cp.Overrides[i2].Limits.MaxConcurrentRequests = new(int)
+						*cp.Overrides[i2].Limits.MaxConcurrentRequests = *o.Overrides[i2].Limits.MaxConcurrentRequests
+					}
+				}
+				if o.Overrides[i2].PassiveHealthCheck != nil {
+					cp.Overrides[i2].PassiveHealthCheck = new(PassiveHealthCheck)
+					*cp.Overrides[i2].PassiveHealthCheck = *o.Overrides[i2].PassiveHealthCheck
+					if o.Overrides[i2].PassiveHealthCheck.EnforcingConsecutive5xx != nil {
+						cp.Overrides[i2].PassiveHealthCheck.EnforcingConsecutive5xx = new(uint32)
+						*cp.Overrides[i2].PassiveHealthCheck.EnforcingConsecutive5xx = *o.Overrides[i2].PassiveHealthCheck.EnforcingConsecutive5xx
+					}
+				}
+			}
+		}
+	}
+	if o.Defaults != nil {
+		cp.Defaults = new(UpstreamConfig)
+		*cp.Defaults = *o.Defaults
+		if o.Defaults.Limits != nil {
+			cp.Defaults.Limits = new(UpstreamLimits)
+			*cp.Defaults.Limits = *o.Defaults.Limits
+			if o.Defaults.Limits.MaxConnections != nil {
+				cp.Defaults.Limits.MaxConnections = new(int)
+				*cp.Defaults.Limits.MaxConnections = *o.Defaults.Limits.MaxConnections
+			}
+			if o.Defaults.Limits.MaxPendingRequests != nil {
+				cp.Defaults.Limits.MaxPendingRequests = new(int)
+				*cp.Defaults.Limits.MaxPendingRequests = *o.Defaults.Limits.MaxPendingRequests
+			}
+			if o.Defaults.Limits.MaxConcurrentRequests != nil {
+				cp.Defaults.Limits.MaxConcurrentRequests = new(int)
+				*cp.Defaults.Limits.MaxConcurrentRequests = *o.Defaults.Limits.MaxConcurrentRequests
+			}
+		}
+		if o.Defaults.PassiveHealthCheck != nil {
+			cp.Defaults.PassiveHealthCheck = new(PassiveHealthCheck)
+			*cp.Defaults.PassiveHealthCheck = *o.Defaults.PassiveHealthCheck
+			if o.Defaults.PassiveHealthCheck.EnforcingConsecutive5xx != nil {
+				cp.Defaults.PassiveHealthCheck.EnforcingConsecutive5xx = new(uint32)
+				*cp.Defaults.PassiveHealthCheck.EnforcingConsecutive5xx = *o.Defaults.PassiveHealthCheck.EnforcingConsecutive5xx
+			}
+		}
+	}
+	return &cp
+}

agent/structs/structs.go

@@ -2010,6 +2010,14 @@ func (csn *CheckServiceNode) CanRead(authz acl.Authorizer) acl.EnforcementDecisi
 
 type CheckServiceNodes []CheckServiceNode
 
+func (csns CheckServiceNodes) DeepCopy() CheckServiceNodes {
+	dup := make(CheckServiceNodes, len(csns))
+	for idx, v := range csns {
+		dup[idx] = *v.DeepCopy()
+	}
+	return dup
+}
+
 // Shuffle does an in-place random shuffle using the Fisher-Yates algorithm.
 func (nodes CheckServiceNodes) Shuffle() {
 	for i := len(nodes) - 1; i > 0; i-- {

build-support/scripts/devtools.sh

@@ -21,6 +21,7 @@ Description:
 Options:
     -protobuf                Just install tools for protobuf.
     -lint                    Just install tools for linting.
+    -codegen                 Just install tools for codegen.
     -h | --help              Print this help text.
 EOF
 }
@@ -43,6 +44,10 @@ function main {
                 lint_install
                 return 0
                 ;;
+            -codegen )
+                codegen_install
+                return 0
+                ;;
             -h | --help )
                 usage
                 return 0
@@ -135,10 +140,22 @@ function lint_install {
         'github.com/golangci/golangci-lint/cmd/golangci-lint'
 }
 
+function codegen_install {
+    local deep_copy_version
+    deep_copy_version="$(make --no-print-directory print-DEEP_COPY_VERSION)"
+
+    install_versioned_tool \
+        'deep-copy' \
+        'github.com/globusdigital/deep-copy' \
+        "${deep_copy_version}" \
+        'github.com/globusdigital/deep-copy'
+}
+
 function tools_install {
 
     lint_install
     proto_tools_install
+    codegen_install
 
     return 0
 }

proto/pbpeering/deep-copy.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+readonly PACKAGE_DIR="$(dirname "${BASH_SOURCE[0]}")"
+cd $PACKAGE_DIR
+
+# Uses: https://github.com/globusdigital/deep-copy
+deep-copy -pointer-receiver \
+  -type PeeringTrustBundle \
+  -o ./peering.deepcopy.go \
+  ./
+

proto/pbpeering/peering.deepcopy.go

@@ -0,0 +1,17 @@
+// generated by deep-copy -pointer-receiver -type PeeringTrustBundle -o ./peering.deepcopy.go ./; DO NOT EDIT.
+
+package pbpeering
+
+// DeepCopy generates a deep copy of *PeeringTrustBundle
+func (o *PeeringTrustBundle) DeepCopy() *PeeringTrustBundle {
+	var cp PeeringTrustBundle = *o
+	if o.unknownFields != nil {
+		cp.unknownFields = make([]byte, len(o.unknownFields))
+		copy(cp.unknownFields, o.unknownFields)
+	}
+	if o.RootPEMs != nil {
+		cp.RootPEMs = make([]string, len(o.RootPEMs))
+		copy(cp.RootPEMs, o.RootPEMs)
+	}
+	return &cp
+}