First changes for unix domain sockets upstreams

Start making structure changes to support unix domain socket address for upstreams

	upstreams = [
	  {
	    destination_name = "echo-service"
	    local_bind_socket_path = "/tmp/upstream.sock"
	    config {
	      passive_health_check {
		interval = "10s"
		max_failures = 42
	      }
	    }
	  }

Signed-off-by: Mark Anderson <manderson@hashicorp.com>

agent/config/builder.go

@@ -1706,6 +1706,8 @@ func (b *builder) upstreamsVal(v []Upstream) structs.Upstreams {
 			Datacenter:           stringVal(u.Datacenter),
 			LocalBindAddress:     stringVal(u.LocalBindAddress),
 			LocalBindPort:        intVal(u.LocalBindPort),
+			LocalBindSocketPath:  stringVal(u.LocalBindSocketPath),
+			LocalBindSocketMode:  uint32Val(u.LocalBindSocketMode),
 			Config:               u.Config,
 			MeshGateway:          b.meshGatewayConfVal(u.MeshGateway),
 		}

agent/config/config.go

@@ -503,14 +503,21 @@ type Upstream struct {
 	// datacenter.
 	Datacenter *string `mapstructure:"datacenter"`
 
+	// It would be worth thinking about a separate structure for these four items,
+	// unifying under address as something like "unix:/tmp/foo", "tcp:localhost:80" could make sense
 	// LocalBindAddress is the ip address a side-car proxy should listen on for
-	// traffic destined for this upstream service. Default if empty is 127.0.0.1.
+	// traffic destined for this upstream service. Default if empty and local bind socket
+	// is not present is 127.0.0.1.
 	LocalBindAddress *string `mapstructure:"local_bind_address"`
 
 	// LocalBindPort is the ip address a side-car proxy should listen on for traffic
 	// destined for this upstream service. Required.
 	LocalBindPort *int `mapstructure:"local_bind_port"`
 
+	// These are exclusive with LocalBindAddress/LocalBindPort
+	LocalBindSocketPath *string `mapstructure:"local_bind_socket_path"`
+	LocalBindSocketMode *uint32 `mapstructure:"local_bind_socket_mode"`
+
 	// Config is an opaque config that is specific to the proxy process being run.
 	// It can be used to pass arbitrary configuration for this specific upstream
 	// to the proxy.

agent/structs/connect_proxy_config.go

@@ -3,6 +3,7 @@ package structs
 import (
 	"encoding/json"
 	"fmt"
+	"net"
 
 	"github.com/hashicorp/consul/api"
 	"github.com/hashicorp/consul/lib"
@@ -319,7 +320,11 @@ type Upstream struct {
 
 	// LocalBindPort is the ip address a side-car proxy should listen on for traffic
 	// destined for this upstream service. Required.
-	LocalBindPort int `alias:"local_bind_port"`
+	LocalBindPort int `json:",omitempty" alias:"local_bind_port"`
+
+	// These are exclusive with LocalBindAddress/LocalBindPort
+	LocalBindSocketPath string `json:",omitempty" alias:"local_bind_socket_path"`
+	LocalBindSocketMode uint32 `json:",omitempty" alias:"local_bind_socket_mode"`
 
 	// Config is an opaque config that is specific to the proxy process being run.
 	// It can be used to pass arbitrary configuration for this specific upstream
@@ -349,6 +354,9 @@ func (t *Upstream) UnmarshalJSON(data []byte) (err error) {
 		LocalBindAddressSnake string `json:"local_bind_address"`
 		LocalBindPortSnake    int    `json:"local_bind_port"`
 
+		LocalBindSocketPathSnake string `json:"local_bind_socket_path"`
+		LocalBindSocketModeSnake uint32 `json:"local_bind_socket_mode"`
+
 		MeshGatewaySnake MeshGatewayConfig `json:"mesh_gateway"`
 
 		*Alias
@@ -373,6 +381,12 @@ func (t *Upstream) UnmarshalJSON(data []byte) (err error) {
 	if t.LocalBindPort == 0 {
 		t.LocalBindPort = aux.LocalBindPortSnake
 	}
+	if t.LocalBindSocketPath == "" {
+		t.LocalBindSocketPath = aux.LocalBindSocketPathSnake
+	}
+	if t.LocalBindSocketMode == 0 {
+		t.LocalBindSocketMode = aux.LocalBindSocketModeSnake
+	}
 	if t.MeshGateway.Mode == "" {
 		t.MeshGateway.Mode = aux.MeshGatewaySnake.Mode
 	}
@@ -415,6 +429,8 @@ func (u *Upstream) ToAPI() api.Upstream {
 		Datacenter:           u.Datacenter,
 		LocalBindAddress:     u.LocalBindAddress,
 		LocalBindPort:        u.LocalBindPort,
+		LocalBindSocketPath:  u.LocalBindSocketPath,
+		LocalBindSocketMode:  u.LocalBindSocketMode,
 		Config:               u.Config,
 		MeshGateway:          u.MeshGateway.ToAPI(),
 	}
@@ -435,6 +451,26 @@ func (u *Upstream) ToKey() UpstreamKey {
 	}
 }
 
+func (u Upstream) HasLocalPortOrSocket() bool {
+	return (u.LocalBindPort != 0 || u.LocalBindSocketPath != "")
+}
+
+func (u Upstream) UpstreamIsUnixSocket() bool {
+	return (u.LocalBindPort == 0 && u.LocalBindAddress == "" && u.LocalBindSocketPath != "")
+}
+
+func (u Upstream) UpstreamAddressToString() string {
+	if u.UpstreamIsUnixSocket() {
+		return u.LocalBindSocketPath
+	}
+
+	addr := u.LocalBindAddress
+	if addr == "" {
+		addr = "127.0.0.1"
+	}
+	return net.JoinHostPort(addr, fmt.Sprintf("%d", u.LocalBindPort))
+}
+
 type UpstreamKey struct {
 	DestinationType      string
 	DestinationName      string
@@ -466,6 +502,8 @@ func UpstreamFromAPI(u api.Upstream) Upstream {
 		Datacenter:           u.Datacenter,
 		LocalBindAddress:     u.LocalBindAddress,
 		LocalBindPort:        u.LocalBindPort,
+		LocalBindSocketPath:  u.LocalBindSocketPath,
+		LocalBindSocketMode:  u.LocalBindSocketMode,
 		Config:               u.Config,
 	}
 }

agent/structs/structs.go

@@ -6,7 +6,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"math/rand"
-	"net"
 	"reflect"
 	"regexp"
 	"sort"
@@ -811,7 +810,7 @@ type Services map[string][]string
 type ServiceNode struct {
 	ID                       types.NodeID
 	Node                     string
-	Address                  string
+	Address                  string // TODO markan; this is slippery when we have sockets; the addr:path pattern falls apart.
 	Datacenter               string
 	TaggedAddresses          map[string]string
 	NodeMeta                 map[string]string
@@ -974,11 +973,13 @@ const (
 )
 
 // Type to hold a address and port of a service
+// TODO markan, think about this around sockets
 type ServiceAddress struct {
 	Address string
 	Port    int
 }
 
+// TODO markan, think about this around sockets
 func (a ServiceAddress) ToAPIServiceAddress() api.ServiceAddress {
 	return api.ServiceAddress{Address: a.Address, Port: a.Port}
 }

api/agent.go

@@ -407,6 +407,8 @@ type Upstream struct {
 	Datacenter           string                 `json:",omitempty"`
 	LocalBindAddress     string                 `json:",omitempty"`
 	LocalBindPort        int                    `json:",omitempty"`
+	LocalBindSocketPath  string                 `json:",omitempty"`
+	LocalBindSocketMode  uint32                 `json:",omitempty"`
 	Config               map[string]interface{} `json:",omitempty" bexpr:"-"`
 	MeshGateway          MeshGatewayConfig      `json:",omitempty"`
 	CentrallyConfigured  bool                   `json:",omitempty" bexpr:"-"`

proto/pbservice/service.pb.go

@@ -154,6 +154,9 @@ type Upstream struct {
 	// CentrallyConfigured indicates whether the upstream was defined in a proxy
 	// instance registration or whether it was generated from a config entry.
 	CentrallyConfigured bool `protobuf:"varint,9,opt,name=CentrallyConfigured,proto3" json:"CentrallyConfigured,omitempty"`
+	// LocalBindSocketPath is the socket to create to connect to the upstream service
+	LocalBindSocketPath string `protobuf:"bytes,10,opt,name=LocalBindSocketPath,proto3" json:"LocalBindSocketPath,omitempty"`
+	LocalBindSocketMode string `protobuf:"bytes,11,opt,name=LocalBindSocketMode,proto3" json:"LocalBindSocketMode,omitempty"`
 }
 
 func (m *Upstream) Reset()         { *m = Upstream{} }
@@ -608,78 +611,80 @@ func init() {
 func init() { proto.RegisterFile("proto/pbservice/service.proto", fileDescriptor_cbb99233b75fb80b) }
 
 var fileDescriptor_cbb99233b75fb80b = []byte{
-	// 1135 bytes of a gzipped FileDescriptorProto
+	// 1161 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x56, 0x4f, 0x6f, 0x1b, 0x45,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x96, 0xcf, 0x6f, 0x1b, 0x45,
-	0x14, 0xf7, 0xfa, 0x4f, 0x6c, 0xbf, 0x94, 0x34, 0x99, 0x9a, 0xb0, 0x84, 0xd6, 0x49, 0x2d, 0x84,
+	0x14, 0xc7, 0xbd, 0xfe, 0x11, 0xdb, 0x2f, 0x25, 0x4d, 0xa6, 0x26, 0x2c, 0xa1, 0x75, 0x52, 0x0b,
-	0x22, 0x88, 0xec, 0x34, 0x51, 0x09, 0xad, 0x54, 0x24, 0x12, 0x07, 0x54, 0x35, 0x69, 0xcd, 0xc6,
+	0xa1, 0x08, 0x22, 0x3b, 0x4d, 0x54, 0x42, 0x2b, 0x15, 0x89, 0xc4, 0x01, 0x55, 0x4d, 0x5a, 0xb3,
-	0xa8, 0x02, 0x89, 0xc3, 0x78, 0x3d, 0x59, 0xaf, 0x62, 0xcf, 0x58, 0x3b, 0xe3, 0xd0, 0x1c, 0xf9,
+	0x31, 0xaa, 0x40, 0xe2, 0x30, 0x5e, 0x4f, 0xd6, 0xab, 0xd8, 0x33, 0xd6, 0xce, 0x38, 0x34, 0x47,
-	0x06, 0x1c, 0xf9, 0x18, 0x48, 0x7c, 0x89, 0x1c, 0x7b, 0xe4, 0x14, 0x41, 0x72, 0xe6, 0x0b, 0xe4,
+	0xfe, 0x03, 0x6e, 0xf0, 0x67, 0xf0, 0x67, 0xe4, 0xd8, 0x23, 0xa7, 0x08, 0x92, 0x33, 0xff, 0x40,
-	0x84, 0xe6, 0xed, 0xec, 0x66, 0xbd, 0x5e, 0xa2, 0xc2, 0xc9, 0x33, 0xef, 0xf7, 0xde, 0x6f, 0x9e,
+	0x4e, 0x68, 0xde, 0xce, 0x6e, 0xd6, 0xeb, 0x25, 0x2a, 0x9c, 0xbc, 0xf3, 0xbe, 0xef, 0xbd, 0x1d,
-	0xdf, 0xfb, 0xbd, 0x99, 0x85, 0x07, 0xe3, 0x40, 0x28, 0xd1, 0x1a, 0xf7, 0x24, 0x0b, 0x4e, 0x7d,
+	0xbf, 0xf9, 0xbc, 0x37, 0x0b, 0x0f, 0xc6, 0x81, 0x50, 0xa2, 0x35, 0xee, 0x49, 0x16, 0x9c, 0xfa,
-	0x97, 0xb5, 0xcc, 0x6f, 0x13, 0xed, 0xa4, 0x1a, 0x03, 0x2b, 0xf7, 0x3d, 0x21, 0xbc, 0x21, 0x6b,
+	0x2e, 0x6b, 0x99, 0xdf, 0x26, 0xda, 0x49, 0x35, 0x16, 0x56, 0xee, 0x7b, 0x42, 0x78, 0x43, 0xd6,
-	0x21, 0xd0, 0x9b, 0x1c, 0xb7, 0xa4, 0x0a, 0x26, 0xae, 0x0a, 0x1d, 0x57, 0x3e, 0x8a, 0x78, 0x5c,
+	0x42, 0xa1, 0x37, 0x39, 0x6e, 0x49, 0x15, 0x4c, 0x5c, 0x15, 0x3a, 0xae, 0x7c, 0x14, 0xe5, 0x71,
-	0x31, 0x1a, 0x09, 0xde, 0x0a, 0x7f, 0x0c, 0xf8, 0x30, 0x7d, 0xc8, 0x80, 0xd1, 0xa1, 0x1a, 0xb8,
+	0xc5, 0x68, 0x24, 0x78, 0x2b, 0xfc, 0x31, 0xe2, 0xc3, 0xf4, 0x4b, 0x06, 0x8c, 0x0e, 0xd5, 0xc0,
-	0x03, 0xe6, 0x9e, 0x18, 0x97, 0x9a, 0x27, 0x3c, 0x11, 0xba, 0xe9, 0x55, 0x68, 0x6d, 0xfc, 0x5d,
+	0x1d, 0x30, 0xf7, 0xc4, 0xb8, 0xd4, 0x3c, 0xe1, 0x89, 0xd0, 0x4d, 0x3f, 0x85, 0xd6, 0xc6, 0xdf,
-	0x04, 0xb2, 0x27, 0x38, 0x67, 0xae, 0xea, 0x04, 0xe2, 0xcd, 0xd9, 0x9e, 0xe0, 0xc7, 0xbe, 0x47,
+	0x45, 0x20, 0x7b, 0x82, 0x73, 0xe6, 0xaa, 0x4e, 0x20, 0xde, 0x9c, 0xed, 0x09, 0x7e, 0xec, 0x7b,
-	0x3e, 0x87, 0xe5, 0x36, 0x93, 0xca, 0xe7, 0x54, 0xf9, 0x82, 0x1f, 0x85, 0xa4, 0x2f, 0xe9, 0x88,
+	0xe4, 0x73, 0x58, 0x6e, 0x33, 0xa9, 0x7c, 0x4e, 0x95, 0x2f, 0xf8, 0x51, 0x98, 0xf4, 0x25, 0x1d,
-	0xd9, 0xd6, 0x9a, 0xb5, 0x5e, 0x75, 0xfe, 0x05, 0x25, 0x5b, 0x50, 0x9b, 0x45, 0x9e, 0xb7, 0xed,
+	0x31, 0xdb, 0x5a, 0xb3, 0xd6, 0xab, 0xce, 0xbf, 0xa8, 0x64, 0x0b, 0x6a, 0xb3, 0xca, 0xf3, 0xb6,
-	0x3c, 0x46, 0x65, 0x62, 0x64, 0x13, 0xee, 0x1d, 0x08, 0x97, 0x0e, 0x8d, 0xe5, 0xab, 0x7e, 0x3f,
+	0x9d, 0xc7, 0xa8, 0x4c, 0x8d, 0x6c, 0xc2, 0xbd, 0x03, 0xe1, 0xd2, 0xa1, 0xb1, 0x7c, 0xd5, 0xef,
-	0x60, 0x52, 0xda, 0x05, 0x0c, 0xc9, 0x82, 0xc8, 0xa7, 0xb0, 0x98, 0x34, 0x77, 0x44, 0xa0, 0xec,
+	0x07, 0x4c, 0x4a, 0xbb, 0x80, 0x21, 0x59, 0x12, 0xf9, 0x14, 0x16, 0x93, 0xe6, 0x8e, 0x08, 0x94,
-	0xe2, 0x9a, 0xb5, 0x5e, 0x72, 0x66, 0xec, 0xe4, 0x31, 0xcc, 0x85, 0xff, 0xc9, 0x2e, 0xad, 0x59,
+	0x5d, 0x5c, 0xb3, 0xd6, 0x4b, 0xce, 0x8c, 0x9d, 0x3c, 0x86, 0xb9, 0xf0, 0x3f, 0xd9, 0xa5, 0x35,
-	0xeb, 0xf3, 0x5b, 0x1f, 0x34, 0xc3, 0x2a, 0x37, 0xa3, 0x2a, 0x37, 0x8f, 0xb0, 0xca, 0xbb, 0xc5,
+	0x6b, 0x7d, 0x7e, 0xeb, 0x83, 0x66, 0x58, 0xe5, 0x66, 0x54, 0xe5, 0xe6, 0x11, 0x56, 0x79, 0xb7,
-	0xf3, 0x8b, 0x55, 0xcb, 0x31, 0xce, 0x64, 0x07, 0xaa, 0xdf, 0x8d, 0xa5, 0x0a, 0x18, 0x1d, 0x49,
+	0x78, 0x7e, 0xb1, 0x6a, 0x39, 0xc6, 0x99, 0xec, 0x40, 0xf5, 0xbb, 0xb1, 0x54, 0x01, 0xa3, 0x23,
-	0x7b, 0x6e, 0xad, 0xb0, 0x3e, 0xbf, 0x75, 0xaf, 0x19, 0x97, 0xb7, 0x19, 0x61, 0x18, 0x95, 0x73,
+	0x69, 0xcf, 0xad, 0x15, 0xd6, 0xe7, 0xb7, 0xee, 0x35, 0xe3, 0xf2, 0x36, 0x23, 0x0d, 0xa3, 0x72,
-	0x6e, 0x7c, 0x49, 0x1b, 0xe6, 0x0f, 0x99, 0x1c, 0x7c, 0x43, 0x15, 0xfb, 0x89, 0x9e, 0xd9, 0x65,
+	0xce, 0x8d, 0x2f, 0x69, 0xc3, 0xfc, 0x21, 0x93, 0x83, 0x6f, 0xa8, 0x62, 0x3f, 0xd1, 0x33, 0xbb,
-	0x3c, 0xf4, 0x7e, 0x22, 0x34, 0x81, 0x86, 0x67, 0x19, 0x8e, 0x64, 0x98, 0xce, 0x7a, 0xff, 0xcd,
+	0x8c, 0x2f, 0xbd, 0x9f, 0x08, 0x4d, 0xa8, 0xe1, 0xbb, 0x4c, 0x8e, 0x64, 0x98, 0xde, 0xf5, 0xfe,
-	0x58, 0x48, 0x66, 0x57, 0x4c, 0xd6, 0x37, 0x04, 0x21, 0x30, 0x15, 0x6b, 0x9c, 0xc9, 0x0b, 0x28,
+	0x9b, 0xb1, 0x90, 0xcc, 0xae, 0x98, 0x5d, 0xdf, 0x24, 0x08, 0x85, 0xa9, 0x58, 0xe3, 0x4c, 0x5e,
-	0x1e, 0x8a, 0x3e, 0xb3, 0xab, 0xba, 0x76, 0xbb, 0x3b, 0xd7, 0x17, 0xab, 0xdb, 0x9e, 0xaf, 0x06,
+	0x40, 0xf1, 0x50, 0xf4, 0x99, 0x5d, 0xd5, 0xb5, 0xdb, 0xdd, 0xb9, 0xbe, 0x58, 0xdd, 0xf6, 0x7c,
-	0x93, 0x5e, 0xd3, 0x15, 0xa3, 0xd6, 0x80, 0xca, 0x81, 0xef, 0x8a, 0x60, 0xdc, 0x72, 0x05, 0x97,
+	0x35, 0x98, 0xf4, 0x9a, 0xae, 0x18, 0xb5, 0x06, 0x54, 0x0e, 0x7c, 0x57, 0x04, 0xe3, 0x96, 0x2b,
-	0x93, 0x61, 0x8b, 0x7a, 0x8c, 0x2b, 0xa3, 0x32, 0xd9, 0xc4, 0xfe, 0xeb, 0x70, 0x07, 0x49, 0xc8,
+	0xb8, 0x9c, 0x0c, 0x5b, 0xd4, 0x63, 0x5c, 0x19, 0xca, 0x64, 0x13, 0xcf, 0x5f, 0x87, 0x3b, 0x98,
-	0x11, 0x2c, 0x76, 0x03, 0xca, 0xe5, 0x98, 0x06, 0x8c, 0x87, 0xea, 0xb0, 0x01, 0xb3, 0x79, 0x98,
+	0x84, 0x1c, 0xc1, 0x62, 0x37, 0xa0, 0x5c, 0x8e, 0x69, 0xc0, 0x78, 0x48, 0x87, 0x0d, 0xb8, 0x9b,
-	0xc8, 0x26, 0xed, 0x32, 0x95, 0xd7, 0x0c, 0x41, 0xe3, 0xf7, 0x02, 0x54, 0xa2, 0x62, 0x91, 0x75,
+	0x87, 0x89, 0xdd, 0xa4, 0x5d, 0xa6, 0xf6, 0x35, 0x93, 0xa0, 0xf1, 0x6b, 0x11, 0x2a, 0x51, 0xb1,
-	0xb8, 0x9b, 0x50, 0x44, 0xf7, 0x6c, 0x1c, 0xc9, 0x2b, 0x6d, 0x4e, 0xe9, 0x4a, 0x4b, 0x4d, 0x8e,
+	0xc8, 0x3a, 0xdc, 0x4d, 0x10, 0xd1, 0x3d, 0x1b, 0x47, 0x78, 0xa5, 0xcd, 0x29, 0xae, 0x34, 0x6a,
-	0xa9, 0xcb, 0x32, 0x74, 0x15, 0x63, 0x29, 0x76, 0x14, 0x6f, 0x61, 0x86, 0x1d, 0x55, 0x5b, 0x07,
+	0x72, 0x4c, 0x5d, 0x96, 0xc1, 0x55, 0xac, 0xa5, 0xb2, 0x23, 0xbc, 0x85, 0x99, 0xec, 0x48, 0x6d,
-	0x68, 0x53, 0x45, 0x5d, 0xc6, 0x15, 0x0b, 0x50, 0x49, 0x55, 0x27, 0x61, 0x89, 0xf5, 0xb6, 0xeb,
+	0x1d, 0xa0, 0x4d, 0x15, 0x75, 0x19, 0x57, 0x2c, 0x40, 0x92, 0xaa, 0x4e, 0xc2, 0x12, 0xf3, 0xb6,
-	0xf3, 0x7e, 0x24, 0xcf, 0x12, 0x7a, 0xcd, 0xd8, 0xc9, 0xc7, 0xf0, 0x5e, 0x6c, 0x43, 0x61, 0xce,
+	0xeb, 0xf3, 0x7e, 0x84, 0x67, 0x09, 0xbd, 0x66, 0xec, 0xe4, 0x63, 0x78, 0x2f, 0xb6, 0x21, 0x98,
-	0xa1, 0x30, 0xa7, 0x8d, 0x09, 0x55, 0x96, 0xff, 0x8b, 0x2a, 0x53, 0xe2, 0xaa, 0xfc, 0x3f, 0x71,
+	0x73, 0x08, 0xe6, 0xb4, 0x31, 0x41, 0x65, 0xf9, 0xbf, 0x50, 0x99, 0x82, 0xab, 0xf2, 0xff, 0xe0,
-	0x6d, 0xc2, 0xbd, 0x3d, 0xc6, 0x55, 0x40, 0x87, 0x43, 0xe3, 0x35, 0x09, 0x58, 0x1f, 0x45, 0x53,
+	0xda, 0x84, 0x7b, 0x7b, 0x8c, 0xab, 0x80, 0x0e, 0x87, 0xc6, 0x6b, 0x12, 0xb0, 0x3e, 0x42, 0x53,
-	0x71, 0xb2, 0xa0, 0x06, 0x87, 0x05, 0x33, 0x53, 0xe6, 0xae, 0x20, 0xcb, 0x30, 0xf7, 0x92, 0x2a,
+	0x71, 0xb2, 0xa4, 0xb8, 0x45, 0xf5, 0xfe, 0x8f, 0x84, 0x7b, 0xc2, 0x54, 0x87, 0xaa, 0x01, 0xd2,
-	0xff, 0x34, 0xec, 0x58, 0xc5, 0x31, 0x3b, 0xd2, 0x86, 0x85, 0x23, 0xbf, 0xcf, 0x5c, 0x1a, 0x98,
+	0x10, 0xb5, 0xe8, 0xb4, 0x94, 0x11, 0x81, 0x60, 0xce, 0x67, 0x46, 0x68, 0xa9, 0xc1, 0x61, 0xc1,
-	0x00, 0xac, 0xf9, 0x74, 0x92, 0x06, 0x69, 0xb3, 0x63, 0x9f, 0xfb, 0xba, 0x09, 0x4e, 0x2a, 0xa6,
+	0xf4, 0xad, 0x99, 0x47, 0x64, 0x19, 0xe6, 0x5e, 0x52, 0xe5, 0x9f, 0x86, 0x54, 0x54, 0x1c, 0xb3,
-	0xf1, 0x3d, 0xdc, 0x49, 0xaa, 0x5c, 0x9f, 0xb6, 0xa7, 0xaf, 0x32, 0x19, 0x9d, 0x16, 0xee, 0xc8,
+	0x22, 0x6d, 0x58, 0x38, 0xf2, 0xfb, 0xcc, 0xa5, 0x81, 0x09, 0xc0, 0x73, 0x9d, 0x2e, 0x84, 0x51,
-	0x23, 0x28, 0x75, 0xa8, 0x1a, 0x48, 0x3b, 0x8f, 0x13, 0xfa, 0xfe, 0xcc, 0x94, 0x68, 0xd4, 0x94,
+	0xda, 0xec, 0xd8, 0xe7, 0xbe, 0x3e, 0x68, 0x27, 0x15, 0xd3, 0xf8, 0x1e, 0xee, 0x24, 0x3b, 0x49,
-	0x20, 0xf4, 0x6c, 0xfc, 0x66, 0x01, 0xdc, 0x60, 0xa4, 0x01, 0x77, 0x0e, 0x7c, 0xa9, 0x18, 0x67,
+	0xbf, 0x6d, 0x4f, 0x8f, 0x4b, 0x19, 0xbd, 0x2d, 0x5c, 0x91, 0x47, 0x50, 0xd2, 0xff, 0x48, 0xda,
-	0x01, 0x76, 0xcb, 0xc2, 0x6e, 0x4d, 0xd9, 0x08, 0x81, 0xa2, 0xf6, 0x35, 0x62, 0xc3, 0x75, 0xdc,
+	0x79, 0x9c, 0x02, 0xef, 0xcf, 0x74, 0xa2, 0x56, 0x4d, 0x99, 0x43, 0xcf, 0xc6, 0xef, 0x16, 0xc0,
-	0x66, 0xbd, 0xc1, 0xc0, 0x42, 0xa2, 0xcd, 0x91, 0x91, 0xac, 0x40, 0xa5, 0xa3, 0x1b, 0xea, 0x8a,
+	0x8d, 0x46, 0x1a, 0x70, 0xe7, 0xc0, 0x97, 0x8a, 0x71, 0x16, 0x20, 0x11, 0x16, 0x12, 0x31, 0x65,
-	0xa1, 0x91, 0x55, 0xbc, 0xd7, 0xf2, 0xec, 0xd0, 0x40, 0xb2, 0xfe, 0xd7, 0x81, 0x18, 0xe1, 0xff,
+	0x23, 0x04, 0x8a, 0x58, 0xd2, 0x10, 0x68, 0x7c, 0x8e, 0x51, 0xd2, 0x0b, 0x0c, 0x2c, 0x24, 0x50,
-	0x41, 0x4d, 0x55, 0x9c, 0xb4, 0xb9, 0x71, 0x0c, 0x4b, 0x33, 0x7d, 0x25, 0xdf, 0x9a, 0x51, 0xc7,
+	0x8a, 0x8c, 0x64, 0x05, 0x2a, 0x1d, 0x0d, 0x8d, 0x2b, 0x86, 0x06, 0xdd, 0x78, 0xad, 0x5b, 0xa0,
-	0x81, 0xd9, 0x7d, 0x76, 0x7d, 0xb1, 0xfa, 0xe4, 0xdd, 0x47, 0x3d, 0x41, 0x77, 0x33, 0xf0, 0x8d,
+	0x43, 0x03, 0xc9, 0xfa, 0x5f, 0x07, 0x62, 0x84, 0xff, 0x07, 0xb9, 0xad, 0x38, 0x69, 0x73, 0xe3,
-	0x03, 0x58, 0xce, 0x9e, 0x66, 0x3d, 0x7e, 0xaf, 0x26, 0xaa, 0x27, 0x26, 0xbc, 0x9f, 0x51, 0xad,
+	0x18, 0x96, 0x66, 0xd8, 0x21, 0xdf, 0x9a, 0x71, 0x82, 0x4d, 0xb9, 0xfb, 0xec, 0xfa, 0x62, 0xf5,
-	0x4c, 0xac, 0xf1, 0x73, 0x19, 0x96, 0x66, 0x3a, 0x4d, 0x0e, 0xa1, 0xf8, 0xc2, 0xe7, 0x7d, 0x93,
+	0xc9, 0xbb, 0x8f, 0x93, 0x44, 0xba, 0x9b, 0xa1, 0xd2, 0x38, 0x80, 0xe5, 0xec, 0x89, 0xa1, 0x5b,
-	0xf6, 0x93, 0xeb, 0x8b, 0xd5, 0xc7, 0xef, 0x9e, 0xb6, 0xa1, 0xd3, 0x04, 0x0e, 0xd2, 0x90, 0x05,
+	0xfc, 0xd5, 0x44, 0xf5, 0xc4, 0x84, 0xf7, 0x33, 0xaa, 0x95, 0xa9, 0x35, 0x7e, 0x2e, 0xc3, 0xd2,
-	0xc8, 0xc7, 0xaf, 0x4b, 0xfe, 0x79, 0x5b, 0xb7, 0x2a, 0x31, 0xe8, 0xb8, 0xd6, 0xb6, 0x2e, 0xf5,
+	0xcc, 0x49, 0x93, 0x43, 0x28, 0xbe, 0xf0, 0x79, 0xdf, 0x6c, 0xfb, 0xc9, 0xf5, 0xc5, 0xea, 0xe3,
-	0xa4, 0x5d, 0x5c, 0x2b, 0x68, 0x9b, 0x5e, 0x13, 0x1b, 0xca, 0xd3, 0x83, 0x1c, 0x6d, 0x09, 0x85,
+	0x77, 0xdf, 0xb6, 0x49, 0xa7, 0x13, 0x38, 0x98, 0x86, 0x2c, 0x40, 0x3e, 0xbe, 0xc1, 0xf2, 0xcf,
-	0xbb, 0x5d, 0xea, 0x79, 0x2c, 0x1a, 0x68, 0x26, 0xed, 0x45, 0x14, 0xd7, 0xa3, 0xdb, 0x14, 0xdc,
+	0xdb, 0xfa, 0xa8, 0x12, 0xc3, 0x04, 0x9f, 0xb5, 0xad, 0x4b, 0x3d, 0x69, 0x17, 0xd7, 0x0a, 0xda,
-	0x4c, 0xc5, 0xec, 0x73, 0x15, 0x9c, 0x19, 0xe1, 0xa5, 0xf9, 0xc8, 0x53, 0x28, 0x1e, 0x32, 0x45,
+	0xa6, 0x9f, 0x89, 0x0d, 0xe5, 0xe9, 0x61, 0x11, 0x2d, 0x09, 0x85, 0xbb, 0x5d, 0xea, 0x79, 0x2c,
-	0xcd, 0xb3, 0xf2, 0xc9, 0xad, 0xbc, 0xda, 0x11, 0xc9, 0x1c, 0x8c, 0x41, 0x2d, 0xea, 0xca, 0x97,
+	0x1a, 0x1a, 0x4c, 0xda, 0x8b, 0x08, 0xd7, 0xa3, 0xdb, 0x08, 0x6e, 0xa6, 0x62, 0xf6, 0xb9, 0x0a,
-	0xb1, 0xf2, 0xb8, 0x26, 0x9b, 0x50, 0x0a, 0xf5, 0x13, 0xde, 0x07, 0xb5, 0x04, 0x21, 0xda, 0xf5,
+	0xce, 0x0c, 0x78, 0xe9, 0x7c, 0xe4, 0x29, 0x14, 0x0f, 0x99, 0xa2, 0xe6, 0xea, 0xfa, 0xe4, 0xd6,
-	0x0d, 0x1a, 0x0d, 0x01, 0x1a, 0xc8, 0x46, 0x3c, 0x4f, 0x55, 0xcc, 0x21, 0x33, 0x24, 0x9e, 0xb2,
+	0xbc, 0xda, 0x11, 0x93, 0x39, 0x18, 0x83, 0x2c, 0xea, 0xca, 0x97, 0xb1, 0xf2, 0xf8, 0x4c, 0x36,
-	0x0d, 0x28, 0xbf, 0x66, 0xbe, 0x37, 0x50, 0xd2, 0xdc, 0xff, 0x24, 0xe1, 0x6e, 0x10, 0x27, 0x72,
+	0xa1, 0x14, 0xf2, 0x13, 0xce, 0x9c, 0x5a, 0x22, 0x21, 0xda, 0xf5, 0x94, 0x8e, 0x9a, 0x00, 0x0d,
-	0x21, 0x35, 0x28, 0x75, 0xc5, 0x09, 0xe3, 0xf6, 0x3c, 0x16, 0x36, 0xdc, 0x90, 0x0d, 0x58, 0xda,
+	0x64, 0x23, 0xee, 0xa7, 0x2a, 0xee, 0x21, 0x33, 0x24, 0xee, 0xb2, 0x0d, 0x28, 0xbf, 0x66, 0xbe,
-	0xe7, 0xb4, 0x37, 0x64, 0x5d, 0xea, 0xbd, 0x3a, 0x65, 0x41, 0xe0, 0xf7, 0x99, 0x7d, 0x07, 0xf5,
+	0x37, 0x50, 0xd2, 0xdc, 0x31, 0x24, 0xe1, 0x6e, 0x14, 0x27, 0x72, 0x21, 0x35, 0x28, 0x75, 0xc5,
-	0x3e, 0x0b, 0x90, 0x6d, 0x28, 0x85, 0xef, 0xcd, 0x02, 0x9e, 0xf7, 0x20, 0x99, 0xde, 0xcc, 0xc7,
+	0x09, 0xe3, 0x66, 0x9e, 0x84, 0x0b, 0xb2, 0x01, 0x4b, 0xfb, 0x9c, 0xf6, 0x86, 0xac, 0x4b, 0xbd,
-	0x8a, 0x13, 0xfa, 0xea, 0xab, 0x67, 0x5f, 0x5f, 0xd7, 0xe3, 0xc0, 0x97, 0x0c, 0x0b, 0xbc, 0x84,
+	0x57, 0xa7, 0x2c, 0x08, 0xfc, 0x3e, 0xb3, 0xef, 0x20, 0xef, 0xb3, 0x02, 0xd9, 0x86, 0x52, 0x78,
-	0xd1, 0xcb, 0x4d, 0xf3, 0xa9, 0x34, 0x8d, 0x9a, 0x8a, 0xa4, 0x62, 0xc8, 0x36, 0x94, 0xcd, 0x11,
+	0xa7, 0x2d, 0xe0, 0xfb, 0x1e, 0x24, 0xb7, 0x37, 0xf3, 0x41, 0xe4, 0x84, 0xbe, 0x7a, 0xf4, 0xec,
-	0xf6, 0x5d, 0x0c, 0xff, 0x70, 0xb6, 0x3f, 0xc6, 0xc1, 0x89, 0x3c, 0x57, 0x7e, 0x84, 0x5a, 0x96,
+	0xeb, 0x2b, 0x61, 0x1c, 0xf8, 0x92, 0x61, 0x81, 0x97, 0x30, 0x7a, 0xb9, 0x69, 0x3e, 0xc7, 0xa6,
-	0x00, 0xc8, 0x22, 0x14, 0x4e, 0xd8, 0x99, 0x79, 0xd4, 0xf4, 0x92, 0xb4, 0xa0, 0x74, 0x4a, 0x87,
+	0x55, 0x53, 0x91, 0x54, 0x0c, 0xd9, 0x86, 0xb2, 0x79, 0x85, 0x7d, 0x17, 0xc3, 0x3f, 0x9c, 0x3d,
-	0x93, 0xf0, 0xe5, 0xca, 0x24, 0x37, 0x14, 0x4e, 0xe8, 0xf7, 0x34, 0xff, 0x85, 0xb5, 0xb2, 0x03,
+	0x1f, 0xe3, 0xe0, 0x44, 0x9e, 0x2b, 0x3f, 0x42, 0x2d, 0x0b, 0x00, 0xb2, 0x08, 0x85, 0x13, 0x76,
-	0xd5, 0x58, 0x07, 0x19, 0x9c, 0xb5, 0x24, 0x67, 0x35, 0x11, 0xd8, 0xf8, 0x32, 0xbe, 0xb7, 0x23,
+	0x66, 0x2e, 0x4e, 0xfd, 0x48, 0x5a, 0x50, 0x3a, 0xa5, 0xc3, 0x49, 0x78, 0x3b, 0x66, 0x26, 0x37,
-	0x79, 0x27, 0x84, 0x6f, 0x4d, 0x0b, 0x3f, 0x52, 0x56, 0xfe, 0x46, 0x59, 0x8d, 0x67, 0x71, 0xe7,
+	0x29, 0x9c, 0xd0, 0xef, 0x69, 0xfe, 0x0b, 0x6b, 0x65, 0x07, 0xaa, 0x31, 0x07, 0x19, 0x39, 0x6b,
-	0x75, 0x60, 0x87, 0x4a, 0xe9, 0x73, 0xcf, 0x4c, 0x7d, 0xb4, 0xd5, 0xc8, 0x6b, 0x1a, 0x70, 0x8d,
+	0xc9, 0x9c, 0xd5, 0x44, 0x60, 0xe3, 0xcb, 0x78, 0x6e, 0x47, 0x78, 0x27, 0xc0, 0xb7, 0xa6, 0xc1,
-	0x84, 0xb1, 0xd1, 0x76, 0xf7, 0xf0, 0xfc, 0xaf, 0x7a, 0xee, 0xfc, 0xb2, 0x6e, 0xbd, 0xbd, 0xac,
+	0x8f, 0xc8, 0xca, 0xdf, 0x90, 0xd5, 0x78, 0x16, 0x9f, 0xbc, 0x0e, 0xec, 0x50, 0x29, 0x7d, 0xee,
-	0x5b, 0x7f, 0x5e, 0xd6, 0xad, 0x5f, 0xae, 0xea, 0xb9, 0x5f, 0xaf, 0xea, 0xb9, 0xb7, 0x57, 0xf5,
+	0x99, 0xae, 0x8f, 0x96, 0x5a, 0x79, 0x4d, 0x03, 0xae, 0x95, 0x30, 0x36, 0x5a, 0xee, 0x1e, 0x9e,
-	0xdc, 0x1f, 0x57, 0xf5, 0xdc, 0x0f, 0x9f, 0xdd, 0x36, 0xfc, 0xa9, 0x6f, 0xda, 0xde, 0x1c, 0x1a,
+	0xff, 0x55, 0xcf, 0x9d, 0x5f, 0xd6, 0xad, 0xb7, 0x97, 0x75, 0xeb, 0xcf, 0xcb, 0xba, 0xf5, 0xcb,
-	0xb6, 0xff, 0x09, 0x00, 0x00, 0xff, 0xff, 0x1f, 0xf1, 0x41, 0x33, 0x52, 0x0b, 0x00, 0x00,
+	0x55, 0x3d, 0xf7, 0xdb, 0x55, 0x3d, 0xf7, 0xf6, 0xaa, 0x9e, 0xfb, 0xe3, 0xaa, 0x9e, 0xfb, 0xe1,
+	0xb3, 0xdb, 0x9a, 0x3f, 0xf5, 0xdd, 0xdc, 0x9b, 0x43, 0xc3, 0xf6, 0x3f, 0x01, 0x00, 0x00, 0xff,
+	0xff, 0x0f, 0xd3, 0xfd, 0x57, 0xb6, 0x0b, 0x00, 0x00,
 }
 
 func (m *ConnectProxyConfig) Marshal() (dAtA []byte, err error) {
@@ -814,6 +819,20 @@ func (m *Upstream) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if len(m.LocalBindSocketMode) > 0 {
+		i -= len(m.LocalBindSocketMode)
+		copy(dAtA[i:], m.LocalBindSocketMode)
+		i = encodeVarintService(dAtA, i, uint64(len(m.LocalBindSocketMode)))
+		i--
+		dAtA[i] = 0x5a
+	}
+	if len(m.LocalBindSocketPath) > 0 {
+		i -= len(m.LocalBindSocketPath)
+		copy(dAtA[i:], m.LocalBindSocketPath)
+		i = encodeVarintService(dAtA, i, uint64(len(m.LocalBindSocketPath)))
+		i--
+		dAtA[i] = 0x52
+	}
 	if m.CentrallyConfigured {
 		i--
 		if m.CentrallyConfigured {
@@ -1456,6 +1475,14 @@ func (m *Upstream) Size() (n int) {
 	if m.CentrallyConfigured {
 		n += 2
 	}
+	l = len(m.LocalBindSocketPath)
+	if l > 0 {
+		n += 1 + l + sovService(uint64(l))
+	}
+	l = len(m.LocalBindSocketMode)
+	if l > 0 {
+		n += 1 + l + sovService(uint64(l))
+	}
 	return n
 }
 
@@ -2327,6 +2354,70 @@ func (m *Upstream) Unmarshal(dAtA []byte) error {
 				}
 			}
 			m.CentrallyConfigured = bool(v != 0)
+		case 10:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field LocalBindSocketPath", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowService
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthService
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthService
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.LocalBindSocketPath = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 11:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field LocalBindSocketMode", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowService
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthService
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthService
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.LocalBindSocketMode = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipService(dAtA[iNdEx:])

proto/pbservice/service.proto

@@ -127,6 +127,10 @@ message Upstream {
     // CentrallyConfigured indicates whether the upstream was defined in a proxy
     // instance registration or whether it was generated from a config entry.
     bool CentrallyConfigured = 9;
+
+    // LocalBindSocketPath is the socket to create to connect to the upstream service
+    string LocalBindSocketPath = 10;
+    string LocalBindSocketMode = 11;
 }
 
 // ServiceConnect are the shared Connect settings between all service