Browse Source

TUN-5488: Close session after it's idle for a period defined by registerUdpSession RPC

pull/561/head
cthuang 6 months ago
parent
commit
73a265f2fc
  1. 5
      connection/quic.go
  2. 2
      datagramsession/manager.go
  3. 13
      datagramsession/manager_test.go
  4. 83
      datagramsession/session.go
  5. 136
      datagramsession/session_test.go
  6. 2
      datagramsession/transport.go
  7. 4
      datagramsession/transport_test.go
  8. 4
      quic/datagram.go
  9. 5
      quic/quic_protocol.go
  10. 30
      quic/quic_protocol_test.go
  11. 10
      tunnelrpc/pogs/sessionrpc.go
  12. 3
      tunnelrpc/tunnelrpc.capnp
  13. 408
      tunnelrpc/tunnelrpc.capnp.go

5
connection/quic.go

@ -9,6 +9,7 @@ import (
"net/http"
"strconv"
"strings"
"time"
"github.com/google/uuid"
"github.com/lucas-clemente/quic-go"
@ -167,7 +168,7 @@ func (q *QUICConnection) handleRPCStream(rpcStream *quicpogs.RPCServerStream) er
return rpcStream.Serve(q, q.logger)
}
func (q *QUICConnection) RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16) error {
func (q *QUICConnection) RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16, closeAfterIdleHint time.Duration) error {
// Each session is a series of datagram from an eyeball to a dstIP:dstPort.
// (src port, dst IP, dst port) uniquely identifies a session, so it needs a dedicated connected socket.
originProxy, err := ingress.DialUDP(dstIP, dstPort)
@ -182,7 +183,7 @@ func (q *QUICConnection) RegisterUdpSession(ctx context.Context, sessionID uuid.
}
go func() {
defer q.sessionManager.UnregisterSession(q.session.Context(), sessionID)
if err := session.Serve(q.session.Context()); err != nil {
if err := session.Serve(q.session.Context(), closeAfterIdleHint); err != nil {
q.logger.Debug().Err(err).Str("sessionID", sessionID.String()).Msg("session terminated")
}
}()

2
datagramsession/manager.go

@ -127,7 +127,7 @@ func (m *manager) sendToSession(datagram *newDatagram) {
}
// session writes to destination over a connected UDP socket, which should not be blocking, so this call doesn't
// need to run in another go routine
_, err := session.writeToDst(datagram.payload)
_, err := session.transportToDst(datagram.payload)
if err != nil {
m.log.Err(err).Str("sessionID", datagram.sessionID.String()).Msg("Failed to write payload to session")
}

13
datagramsession/manager_test.go

@ -7,6 +7,7 @@ import (
"io"
"net"
"testing"
"time"
"github.com/google/uuid"
"github.com/rs/zerolog"
@ -21,15 +22,15 @@ func TestManagerServe(t *testing.T) {
)
log := zerolog.Nop()
transport := &mockQUICTransport{
reqChan: newDatagramChannel(),
respChan: newDatagramChannel(),
reqChan: newDatagramChannel(1),
respChan: newDatagramChannel(1),
}
mg := NewManager(transport, &log)
eyeballTracker := make(map[uuid.UUID]*datagramChannel)
for i := 0; i < sessions; i++ {
sessionID := uuid.New()
eyeballTracker[sessionID] = newDatagramChannel()
eyeballTracker[sessionID] = newDatagramChannel(1)
}
ctx, cancel := context.WithCancel(context.Background())
@ -88,7 +89,7 @@ func TestManagerServe(t *testing.T) {
sessionDone := make(chan struct{})
go func() {
session.Serve(ctx)
session.Serve(ctx, time.Minute*2)
close(sessionDone)
}()
@ -179,9 +180,9 @@ type datagramChannel struct {
closedChan chan struct{}
}
func newDatagramChannel() *datagramChannel {
func newDatagramChannel(capacity uint) *datagramChannel {
return &datagramChannel{
datagramChan: make(chan *newDatagram, 1),
datagramChan: make(chan *newDatagram, capacity),
closedChan: make(chan struct{}),
}
}

83
datagramsession/session.go

@ -3,10 +3,15 @@ package datagramsession
import (
"context"
"io"
"time"
"github.com/google/uuid"
)
const (
defaultCloseIdleAfter = time.Second * 210
)
// Each Session is a bidirectional pipe of datagrams between transport and dstConn
// Currently the only implementation of transport is quic DatagramMuxer
// Destination can be a connection with origin or with eyeball
@ -22,7 +27,9 @@ type Session struct {
id uuid.UUID
transport transport
dstConn io.ReadWriteCloser
doneChan chan struct{}
// activeAtChan is used to communicate the last read/write time
activeAtChan chan time.Time
doneChan chan struct{}
}
func newSession(id uuid.UUID, transport transport, dstConn io.ReadWriteCloser) *Session {
@ -30,41 +37,81 @@ func newSession(id uuid.UUID, transport transport, dstConn io.ReadWriteCloser) *
id: id,
transport: transport,
dstConn: dstConn,
doneChan: make(chan struct{}),
// activeAtChan has low capacity. It can be full when there are many concurrent read/write. markActive() will
// drop instead of blocking because last active time only needs to be an approximation
activeAtChan: make(chan time.Time, 2),
doneChan: make(chan struct{}),
}
}
func (s *Session) Serve(ctx context.Context) error {
func (s *Session) Serve(ctx context.Context, closeAfterIdle time.Duration) error {
serveCtx, cancel := context.WithCancel(ctx)
defer cancel()
go func() {
select {
case <-serveCtx.Done():
case <-s.doneChan:
}
s.dstConn.Close()
}()
go s.waitForCloseCondition(serveCtx, closeAfterIdle)
// QUIC implementation copies data to another buffer before returning https://github.com/lucas-clemente/quic-go/blob/v0.24.0/session.go#L1967-L1975
// This makes it safe to share readBuffer between iterations
readBuffer := make([]byte, 1280)
readBuffer := make([]byte, s.transport.MTU())
for {
if err := s.dstToTransport(readBuffer); err != nil {
return err
}
}
}
func (s *Session) waitForCloseCondition(ctx context.Context, closeAfterIdle time.Duration) {
if closeAfterIdle == 0 {
// provide deafult is caller doesn't specify one
closeAfterIdle = defaultCloseIdleAfter
}
// Closing dstConn cancels read so Serve function can return
defer s.dstConn.Close()
checkIdleFreq := closeAfterIdle / 8
checkIdleTicker := time.NewTicker(checkIdleFreq)
defer checkIdleTicker.Stop()
activeAt := time.Now()
for {
// TODO: TUN-5303: origin proxy should determine the buffer size
n, err := s.dstConn.Read(readBuffer)
if n > 0 {
if err := s.transport.SendTo(s.id, readBuffer[:n]); err != nil {
return err
select {
case <-ctx.Done():
return
case <-s.doneChan:
return
case <-checkIdleTicker.C:
// The session is considered inactive if current time is after (last active time + allowed idle time)
if time.Now().After(activeAt.Add(closeAfterIdle)) {
return
}
case activeAt = <-s.activeAtChan: // Update last active time
}
if err != nil {
}
}
func (s *Session) dstToTransport(buffer []byte) error {
n, err := s.dstConn.Read(buffer)
s.markActive()
if n > 0 {
if err := s.transport.SendTo(s.id, buffer[:n]); err != nil {
return err
}
}
return err
}
func (s *Session) writeToDst(payload []byte) (int, error) {
func (s *Session) transportToDst(payload []byte) (int, error) {
s.markActive()
return s.dstConn.Write(payload)
}
// Sends the last active time to the idle checker loop without blocking. activeAtChan will only be full when there
// are many concurrent read/write. It is fine to lose some precision
func (s *Session) markActive() {
select {
case s.activeAtChan <- time.Now():
default:
}
}
func (s *Session) close() {
close(s.doneChan)
}

136
datagramsession/session_test.go

@ -1,43 +1,54 @@
package datagramsession
import (
"bytes"
"context"
"fmt"
"io"
"net"
"sync"
"testing"
"time"
"github.com/google/uuid"
"github.com/stretchr/testify/require"
"golang.org/x/sync/errgroup"
)
// TestCloseSession makes sure a session will stop after context is done
func TestSessionCtxDone(t *testing.T) {
testSessionReturns(t, true)
testSessionReturns(t, closeByContext, time.Minute*2)
}
// TestCloseSession makes sure a session will stop after close method is called
func TestCloseSession(t *testing.T) {
testSessionReturns(t, false)
testSessionReturns(t, closeByCallingClose, time.Minute*2)
}
func testSessionReturns(t *testing.T, closeByContext bool) {
// TestCloseIdle makess sure a session will stop after there is no read/write for a period defined by closeAfterIdle
func TestCloseIdle(t *testing.T) {
testSessionReturns(t, closeByTimeout, time.Millisecond*100)
}
func testSessionReturns(t *testing.T, closeBy closeMethod, closeAfterIdle time.Duration) {
sessionID := uuid.New()
cfdConn, originConn := net.Pipe()
payload := testPayload(sessionID)
transport := &mockQUICTransport{
reqChan: newDatagramChannel(),
respChan: newDatagramChannel(),
reqChan: newDatagramChannel(1),
respChan: newDatagramChannel(1),
}
session := newSession(sessionID, transport, cfdConn)
ctx, cancel := context.WithCancel(context.Background())
sessionDone := make(chan struct{})
go func() {
session.Serve(ctx)
session.Serve(ctx, closeAfterIdle)
close(sessionDone)
}()
go func() {
n, err := session.writeToDst(payload)
n, err := session.transportToDst(payload)
require.NoError(t, err)
require.Equal(t, len(payload), n)
}()
@ -47,13 +58,120 @@ func testSessionReturns(t *testing.T, closeByContext bool) {
require.NoError(t, err)
require.Equal(t, len(payload), n)
if closeByContext {
lastRead := time.Now()
switch closeBy {
case closeByContext:
cancel()
} else {
case closeByCallingClose:
session.close()
}
<-sessionDone
if closeBy == closeByTimeout {
require.True(t, time.Now().After(lastRead.Add(closeAfterIdle)))
}
// call cancelled again otherwise the linter will warn about possible context leak
cancel()
}
type closeMethod int
const (
closeByContext closeMethod = iota
closeByCallingClose
closeByTimeout
)
func TestWriteToDstSessionPreventClosed(t *testing.T) {
testActiveSessionNotClosed(t, false, true)
}
func TestReadFromDstSessionPreventClosed(t *testing.T) {
testActiveSessionNotClosed(t, true, false)
}
func testActiveSessionNotClosed(t *testing.T, readFromDst bool, writeToDst bool) {
const closeAfterIdle = time.Millisecond * 100
const activeTime = time.Millisecond * 500
sessionID := uuid.New()
cfdConn, originConn := net.Pipe()
payload := testPayload(sessionID)
transport := &mockQUICTransport{
reqChan: newDatagramChannel(100),
respChan: newDatagramChannel(100),
}
session := newSession(sessionID, transport, cfdConn)
startTime := time.Now()
activeUntil := startTime.Add(activeTime)
ctx, cancel := context.WithCancel(context.Background())
errGroup, ctx := errgroup.WithContext(ctx)
errGroup.Go(func() error {
session.Serve(ctx, closeAfterIdle)
if time.Now().Before(startTime.Add(activeTime)) {
return fmt.Errorf("session closed while it's still active")
}
return nil
})
if readFromDst {
errGroup.Go(func() error {
for {
if time.Now().After(activeUntil) {
return nil
}
if _, err := originConn.Write(payload); err != nil {
return err
}
time.Sleep(closeAfterIdle / 2)
}
})
}
if writeToDst {
errGroup.Go(func() error {
readBuffer := make([]byte, len(payload))
for {
n, err := originConn.Read(readBuffer)
if err != nil {
if err == io.EOF || err == io.ErrClosedPipe {
return nil
}
return err
}
if !bytes.Equal(payload, readBuffer[:n]) {
return fmt.Errorf("payload %v is not equal to %v", readBuffer[:n], payload)
}
}
})
errGroup.Go(func() error {
for {
if time.Now().After(activeUntil) {
return nil
}
if _, err := session.transportToDst(payload); err != nil {
return err
}
time.Sleep(closeAfterIdle / 2)
}
})
}
require.NoError(t, errGroup.Wait())
cancel()
}
func TestMarkActiveNotBlocking(t *testing.T) {
const concurrentCalls = 50
session := newSession(uuid.New(), nil, nil)
var wg sync.WaitGroup
wg.Add(concurrentCalls)
for i := 0; i < concurrentCalls; i++ {
go func() {
session.markActive()
wg.Done()
}()
}
wg.Wait()
}

2
datagramsession/transport.go

@ -8,4 +8,6 @@ type transport interface {
SendTo(sessionID uuid.UUID, payload []byte) error
// ReceiveFrom reads the next datagram from the transport
ReceiveFrom() (uuid.UUID, []byte, error)
// Max transmission unit of the transport
MTU() uint
}

4
datagramsession/transport_test.go

@ -22,6 +22,10 @@ func (mt *mockQUICTransport) ReceiveFrom() (uuid.UUID, []byte, error) {
return mt.reqChan.Receive(context.Background())
}
func (mt *mockQUICTransport) MTU() uint {
return 1220
}
func (mt *mockQUICTransport) newRequest(ctx context.Context, sessionID uuid.UUID, payload []byte) error {
return mt.reqChan.Send(ctx, sessionID, payload)
}

4
quic/datagram.go

@ -57,6 +57,10 @@ func (dm *DatagramMuxer) ReceiveFrom() (uuid.UUID, []byte, error) {
return ExtractSessionID(msg)
}
func (dm *DatagramMuxer) MTU() uint {
return MaxDatagramFrameSize
}
// Each QUIC datagram should be suffixed with session ID.
// ExtractSessionID extracts the session ID and a slice with only the payload
func ExtractSessionID(b []byte) (uuid.UUID, []byte, error) {

5
quic/quic_protocol.go

@ -5,6 +5,7 @@ import (
"fmt"
"io"
"net"
"time"
capnp "zombiezen.com/go/capnproto2"
"zombiezen.com/go/capnproto2/rpc"
@ -239,8 +240,8 @@ func NewRPCClientStream(ctx context.Context, stream io.ReadWriteCloser, logger *
}, nil
}
func (rcs *RPCClientStream) RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16) error {
resp, err := rcs.client.RegisterUdpSession(ctx, sessionID, dstIP, dstPort)
func (rcs *RPCClientStream) RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16, closeIdleAfterHint time.Duration) error {
resp, err := rcs.client.RegisterUdpSession(ctx, sessionID, dstIP, dstPort, closeIdleAfterHint)
if err != nil {
return err
}

30
quic/quic_protocol_test.go

@ -8,6 +8,7 @@ import (
"io"
"net"
"testing"
"time"
"github.com/google/uuid"
"github.com/rs/zerolog"
@ -15,6 +16,10 @@ import (
"github.com/stretchr/testify/require"
)
const (
testCloseIdleAfterHint = time.Minute * 2
)
func TestConnectRequestData(t *testing.T) {
var tests = []struct {
name string
@ -110,9 +115,10 @@ func TestRegisterUdpSession(t *testing.T) {
serverStream := mockRPCStream{serverReader, serverWriter}
rpcServer := mockRPCServer{
sessionID: uuid.New(),
dstIP: net.IP{172, 16, 0, 1},
dstPort: 8000,
sessionID: uuid.New(),
dstIP: net.IP{172, 16, 0, 1},
dstPort: 8000,
closeIdleAfter: testCloseIdleAfterHint,
}
logger := zerolog.Nop()
sessionRegisteredChan := make(chan struct{})
@ -131,10 +137,10 @@ func TestRegisterUdpSession(t *testing.T) {
rpcClientStream, err := NewRPCClientStream(context.Background(), clientStream, &logger)
assert.NoError(t, err)
assert.NoError(t, rpcClientStream.RegisterUdpSession(context.Background(), rpcServer.sessionID, rpcServer.dstIP, rpcServer.dstPort))
assert.NoError(t, rpcClientStream.RegisterUdpSession(context.Background(), rpcServer.sessionID, rpcServer.dstIP, rpcServer.dstPort, testCloseIdleAfterHint))
// Different sessionID, the RPC server should reject the registraion
assert.Error(t, rpcClientStream.RegisterUdpSession(context.Background(), uuid.New(), rpcServer.dstIP, rpcServer.dstPort))
assert.Error(t, rpcClientStream.RegisterUdpSession(context.Background(), uuid.New(), rpcServer.dstIP, rpcServer.dstPort, testCloseIdleAfterHint))
assert.NoError(t, rpcClientStream.UnregisterUdpSession(context.Background(), rpcServer.sessionID))
@ -146,12 +152,13 @@ func TestRegisterUdpSession(t *testing.T) {
}
type mockRPCServer struct {
sessionID uuid.UUID
dstIP net.IP
dstPort uint16
sessionID uuid.UUID
dstIP net.IP
dstPort uint16
closeIdleAfter time.Duration
}
func (s mockRPCServer) RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16) error {
func (s mockRPCServer) RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16, closeIdleAfter time.Duration) error {
if s.sessionID != sessionID {
return fmt.Errorf("expect session ID %s, got %s", s.sessionID, sessionID)
}
@ -159,7 +166,10 @@ func (s mockRPCServer) RegisterUdpSession(ctx context.Context, sessionID uuid.UU
return fmt.Errorf("expect destination IP %s, got %s", s.dstIP, dstIP)
}
if s.dstPort != dstPort {
return fmt.Errorf("expect session ID %d, got %d", s.dstPort, dstPort)
return fmt.Errorf("expect destination port %d, got %d", s.dstPort, dstPort)
}
if s.closeIdleAfter != closeIdleAfter {
return fmt.Errorf("expect closeIdleAfter %d, got %d", s.closeIdleAfter, closeIdleAfter)
}
return nil
}

10
tunnelrpc/pogs/sessionrpc.go

@ -4,6 +4,7 @@ import (
"context"
"fmt"
"net"
"time"
"github.com/cloudflare/cloudflared/tunnelrpc"
"github.com/google/uuid"
@ -13,7 +14,7 @@ import (
)
type SessionManager interface {
RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16) error
RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16, closeAfterIdleHint time.Duration) error
UnregisterUdpSession(ctx context.Context, sessionID uuid.UUID) error
}
@ -47,8 +48,10 @@ func (i SessionManager_PogsImpl) RegisterUdpSession(p tunnelrpc.SessionManager_r
}
dstPort := p.Params.DstPort()
closeIdleAfterHint := time.Duration(p.Params.CloseAfterIdleHint())
resp := RegisterUdpSessionResponse{}
registrationErr := i.impl.RegisterUdpSession(p.Ctx, sessionID, dstIP, dstPort)
registrationErr := i.impl.RegisterUdpSession(p.Ctx, sessionID, dstIP, dstPort, closeIdleAfterHint)
if registrationErr != nil {
resp.Err = registrationErr
}
@ -108,7 +111,7 @@ func (c SessionManager_PogsClient) Close() error {
return c.Conn.Close()
}
func (c SessionManager_PogsClient) RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16) (*RegisterUdpSessionResponse, error) {
func (c SessionManager_PogsClient) RegisterUdpSession(ctx context.Context, sessionID uuid.UUID, dstIP net.IP, dstPort uint16, closeAfterIdleHint time.Duration) (*RegisterUdpSessionResponse, error) {
client := tunnelrpc.SessionManager{Client: c.Client}
promise := client.RegisterUdpSession(ctx, func(p tunnelrpc.SessionManager_registerUdpSession_Params) error {
if err := p.SetSessionId(sessionID[:]); err != nil {
@ -118,6 +121,7 @@ func (c SessionManager_PogsClient) RegisterUdpSession(ctx context.Context, sessi
return err
}
p.SetDstPort(dstPort)
p.SetCloseAfterIdleHint(int64(closeAfterIdleHint))
return nil
})
result, err := promise.Result().Struct()

3
tunnelrpc/tunnelrpc.capnp

@ -148,6 +148,7 @@ struct RegisterUdpSessionResponse {
}
interface SessionManager {
registerUdpSession @0 (sessionId :Data, dstIp :Data, dstPort: UInt16) -> (result :RegisterUdpSessionResponse);
# Let the edge decide closeAfterIdle to make sure cloudflared doesn't close session before the edge closes its side
registerUdpSession @0 (sessionId :Data, dstIp :Data, dstPort: UInt16, closeAfterIdleHint: Int64) -> (result :RegisterUdpSessionResponse);
unregisterUdpSession @1 (sessionId :Data) -> ();
}

408
tunnelrpc/tunnelrpc.capnp.go

@ -3465,7 +3465,7 @@ func (c SessionManager) RegisterUdpSession(ctx context.Context, params func(Sess
Options: capnp.NewCallOptions(opts),
}
if params != nil {
call.ParamsSize = capnp.ObjectSize{DataSize: 8, PointerCount: 2}
call.ParamsSize = capnp.ObjectSize{DataSize: 16, PointerCount: 2}
call.ParamsFunc = func(s capnp.Struct) error { return params(SessionManager_registerUdpSession_Params{Struct: s}) }
}
return SessionManager_registerUdpSession_Results_Promise{Pipeline: capnp.NewPipeline(c.Client.Call(call))}
@ -3560,12 +3560,12 @@ type SessionManager_registerUdpSession_Params struct{ capnp.Struct }
const SessionManager_registerUdpSession_Params_TypeID = 0x904e297b87fbecea
func NewSessionManager_registerUdpSession_Params(s *capnp.Segment) (SessionManager_registerUdpSession_Params, error) {
st, err := capnp.NewStruct(s, capnp.ObjectSize{DataSize: 8, PointerCount: 2})
st, err := capnp.NewStruct(s, capnp.ObjectSize{DataSize: 16, PointerCount: 2})
return SessionManager_registerUdpSession_Params{st}, err
}
func NewRootSessionManager_registerUdpSession_Params(s *capnp.Segment) (SessionManager_registerUdpSession_Params, error) {
st, err := capnp.NewRootStruct(s, capnp.ObjectSize{DataSize: 8, PointerCount: 2})
st, err := capnp.NewRootStruct(s, capnp.ObjectSize{DataSize: 16, PointerCount: 2})
return SessionManager_registerUdpSession_Params{st}, err
}
@ -3615,12 +3615,20 @@ func (s SessionManager_registerUdpSession_Params) SetDstPort(v uint16) {
s.Struct.SetUint16(0, v)
}
func (s SessionManager_registerUdpSession_Params) CloseAfterIdleHint() int64 {
return int64(s.Struct.Uint64(8))
}
func (s SessionManager_registerUdpSession_Params) SetCloseAfterIdleHint(v int64) {
s.Struct.SetUint64(8, uint64(v))
}
// SessionManager_registerUdpSession_Params_List is a list of SessionManager_registerUdpSession_Params.
type SessionManager_registerUdpSession_Params_List struct{ capnp.List }
// NewSessionManager_registerUdpSession_Params creates a new list of SessionManager_registerUdpSession_Params.
func NewSessionManager_registerUdpSession_Params_List(s *capnp.Segment, sz int32) (SessionManager_registerUdpSession_Params_List, error) {
l, err := capnp.NewCompositeList(s, capnp.ObjectSize{DataSize: 8, PointerCount: 2}, sz)
l, err := capnp.NewCompositeList(s, capnp.ObjectSize{DataSize: 16, PointerCount: 2}, sz)
return SessionManager_registerUdpSession_Params_List{l}, err
}
@ -3853,201 +3861,203 @@ func (p SessionManager_unregisterUdpSession_Results_Promise) Struct() (SessionMa
return SessionManager_unregisterUdpSession_Results{s}, err
}
const schema_db8274f9144abc7e = "x\xda\xccY}p\x15\xe5\xd5?g\xf7\xdelB>" +
"nv\xf6BHF\xdf\xbc/\x03\xe3K\x14\x14(\x1d" +
"\xa0\xda\x04L\xa8\x89|d\xef\x85\x8e\x05t\xdc\xdc\xfb" +
"\x106\xbdw\xf7\xb2\xbb7\x12\x04\xf9\x10D\x1c\xbf@" +
"PD\xa9\x88\xd3vDm\xa1j\xad\x1d\x9dJ\xeb\xe7" +
"(*\x0etPqZD\xfa\xc1`\xad\x88uh\xd5" +
"\xed\x9c\xdd\xbb\x1f\xb9\x09I\x90\xfe\xd1\xff\x92\xb3\xcfs" +
"\x9es~\xe7\xf7\x9cs\x9es/\x9bY\xda\xc4M\x88" +
"\xd6T\x02\xc8\xdb\xa2%6kxg\xf9\xce1\xbf[" +
"\x0br\x1d\xa2}\xd3sm\xf13\xd6\xda\xf7!\xca\x0b" +
"\x00\x93\x96\x96,Gi}\x89\x00 \xad)\xf93\xa0" +
"}\xcb\x88=\x0f\xfd\xb8e\xcb\xcd \xd6\xf1\xc1b\xc0" +
"ILhC\xa9G\xa0\x95ya\x83t\x88\xfe\xb2\xaf" +
"\x16/]\x18\x7f\xfbMZ\x1dV\x1d!\xd5\xcf\x0b\x0d" +
"(\xedw6\xbc&\x90\xea\xcb\xb3o\xed\xfa\xf6\xd6\xd7" +
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"\x95\xce\x05\xb4?\xdb2\xf2\xb1\x87\xdf|u=\x88\x17" +
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")i\xbf\xe4PY\"C\x8f\x8d\xdb{\xe3_\xef8" +
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"+\xb5\xab\x7f\xff\xdd#\xa1\xa0e\xe3\x1f\"D\xec9" +
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"\xfd\xdbON\xdcu2\x9b\xfe\x93C<\x0f\xb3\xad\xf1" +
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"\xd2\xe2)'\xbf7\xe6\xce\x97O\xf5GA\xaci@" +
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".\x02\xb0\xc4\x09^M\x17J-5N\xf0j^!" +
"\x9a\xdd\xf2\xfeu\xcb\xde\xb9\xf9\xb3\xcf\x8bc\xed\xa8\x9e" +
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"t\x17\xae\xa8k#\x87\xef\x15\x1e<\xb6\xfa\x0f\xd7}" +
"\x19vxj\xdd\x87\xe4\xf0\xec:rx\xc5'\xf7_" +
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"\x87\"b\x9cB/\xaa$\\\xc2\xa3lq(r\\" +
"\x9c2\x8f\xb8t\x14\x80\x9c\xe1Q^\xc6!\xf2q\xe4" +
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"\xbdD\xcf\x1b\xe6|\xcdB5\x93`\x8b\x0df\xe2\x12" +
",\x01\x0eK\x00\x07r/\xc9LS\xd5\xb5\xd9\x8a\xa6" +
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"(\xdf\xca\xa1\xc8\x170_\xdf\x00 \xaf\xe6Q\xbe\x9d" +
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"\x10b\x8a\x91Z\xe2\x07j\x00\xa4[\x96\xa9\xa6\xa5j" +
"\x9d\xf3\x1cyc\xbb\x9eQS=\xe4U\x85c\xe7\x85" +
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"!\xfa\x8enW\x0c\x85\xcf\x9ar\x85\x8fc\xcb\x02\x00" +
"\xb9\x99G\xb9=\x84\xe3l\xc2q\x16\x8f\xf25!\x1c" +
"\xe7\x13\x8e\xed<\xca\x8b8\xb4uC\xedT\xb5+\x19" +
"\xf0F\x98\x81\xa6\xa5)YF\x98\x15\xf0X\xa5\xe7," +
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"\x8fR\x1e\xa3tmt\x82\x99y!c\x99r\xc4\xf7" +
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"\x9emc)\xb4\xff\xcf\xa3\xfc\xad\x90m\x13(+]" +
"\xc6\xa3|9\x87\xb6\x92J\xe9y\xcd\x9a\x07\xbc\xd2Y" +
"\xc4\xe0$\x83X\xca`Ap\x87\x0e\x9cw\xd5\x8b\xa0" +
"\x8b\x19J\xb6W\xbc\x08\xba\x0a\x1e\xe5\x91\xfd#\xe2\x9f" +
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"&\xf5Fc;\x80\\\xcd\xa3|\x01\x87v\xa7\xa1\xa4" +
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"\x1a:\xb4\xea\\\x0fM8w\xc2\x04\x7f\xd7\xc0\xfb\x0d" +
"V\x00\xa1\xb0\xbd\xbd\xde\xb59\xee\xdb\xbcrTP\xb8" +
"|\x82\xad\xe9\x082\xab\x9f;6\x12\x15o\xe5Q\xde" +
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"\xb4\xfeBo\x04\xa1\xf7\xf2\xde\xc6\xb5\xe1\xc8c!\xf2" +
"\xdb\x83 \x8b\x11\xce\x8d\xfc\x8e]\x00\xf2N\x1e\xe5\xc7" +
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"\xfa\x94\x92\x09\x12\xa6m\xb0\\FI\xb1\x16,\x14Y" +
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"\xbae\xb1\xac\x90\xb3\xcc\xa1\xb4M\x01@\x94\x1f\x045" +
"c\x16%\xdf\x86 \xf7\xf8\x00\x8d\xa3\xe4{\x09\x8f\xf2" +
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"\x1f\xb8\xb3&\xd7\x9d\xd63d2]\x81&\x1e\xe5Y" +
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"\x8e\xfe\x0b@\xda\x88\xbb\x01\x92\xb7\x93x\x1b-\x8f\xf0" +
"\xce\x95\x90\xb6:\xea\xb7\x90|'\xc9\xa3\x918F\x01" +
"\xa4\x1d\xd8\x00\x90\xdcF\xf2\xa7H^\xc2\xc5\xb1\x04@" +
"\xda\x8b]\x00\xc9=$\x7f\x8e\xe4B4N\x8f \xe9" +
"Y4\x00\x92\xbf\"\xf9\x8b$/\x1d\x19\xc7RzG" +
";\xf2\x17H\xfe\x06\xc9\xcbj\xe3XF\xafj\\\x0b" +
"\x90|\x95\xe4\x07I>\x0c\xe38\x0c@:\x80\xdb\x01" +
"\x92\x07I\xfeG\x92\x97\x97\xc4\xb1\x1c@\xfa\xc0\xb1\xe7" +
"0\xc9?\"yE$\x8e\x15\x00\xd2Q\xdc\x05\x90\xfc" +
"\x88\xe4\x7f'y\xa5\x10\xc7J\x00\xe9c\xc7\xaf\x93$" +
"/\xe5\x8a\x1ap\x8fQE]6\xaf\x9b~\xc8X\xe1" +
"\x8e\xa3K\xf7v=F\x9d4\xc6\x82\x91\x16 \xc6\x00" +
"\xed\x9c\xaeg\xe6\xf4fj\xccR:M\xaf\xa3\xaf\x0e" +
"\xa6\x0c\x80$\xf4\xeb>\xc4t\xad5\xed'\x82\xe2\xac" +
"\xe3Y\xa2\x9a\xd3\xf3\x96\x9e\xcfA}Z\xb1X\xda\xcf" +
"9F^\x9bi\xe8\xd9y\xc8\x8c\xac\xaa)\x99A\xb2" +
"Q\x19pX\x06\x85\x94\xe0\xe9\x1e85\x9d\xfd}\xe2" +
"3\x9a+ft}n\xda<\xa5s(yjb\xd0" +
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"\xef\x82\x8a\xa1y \x9d\xc3\x15\xf4\x0f\xd9\xfcNf\xb9" +
"\x7f\xd13\x94\x1e\x01B\xb8\xcc\x9f\xdb\xee\x043cC" +
"q=\x18\xce\x0c\xfep\xe9\xa7\xf0\xf7S\xf6\xbd\x9e3" +
"\xf4\x86\xa6\xd8/\xe2Q^\x12\x8a=\xa3\xa2\x90\xe6Q" +
"\xce\x05E<\x9b\x08\xa6\x16\"\xcf\x15\xc6\x16T(r" +
"<\xca+8\x8c\xd1+\x13\xab\x83)n/\xa3{\xbf" +
"\xac\x89\x0a\xadZ\x9a\x01.\xf3\xd8\x1c*\x1f\xfe<s" +
"\xf0\xeelhn{]\xef\xa0\x80\xfb3\xc2\xa2\x93\xcf" +
"\xfa\xe4jt\x0f%\x9e\x8dt\x06&\xde\xbc\x14\xbd\xc9" +
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"\x038q\xab\x80\x9c?\x81Fo\xd2,n\xbc\x0d8" +
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"\x140\xe2\x0f\xe6\xd1\x9b|\x89K\xbb\x80\x13U\x01\xa3" +
"\xfel\x1a\xbd\xe1\xa8x\xedZ\xe0\xc4\xf9\xc1\x84\x06\x1a" +
"]?\x9a\xd0\xf68\x0a\xf5\x0eK{\xcfk\xdcU\x00" +
"Mh{=0\x7f\xb6&\xd8Y\xe5\x8d\x1c \x96R" +
",\xd6D\xcd\x99{\xff\xb1\x90\x00\xa0\x09\xe5\x08\x86\x06" +
"\x7f\x00\xe7\xfb\xbeL\xb0z'\xce\xdf\xb4e\xf2\xf6\x7f" +
"\xc3\x94\xc4\xf7g5\x9d\xe3\x8f\xaeBz\xbbB\x0f\xdf" +
"A\x1a\xbf\xc8\xd9\xbc\xf0\xc8\x1f\xa3\xcd\xa4\xff\x7f}\xfd" +
"\x07\xa8qz\x83G\xf9p\xe8Z\x1f\"\xe1\xdb<\xca" +
"GB\x8d\xd3\xbbt\xd7\x0f\xf3(\x9f\x0e\xa6\x91\x9f\xde" +
"\x06 \x9f\xe61\x11jD\xc4\xafh\xe1\x97T\xae\x9d" +
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"q\xdb\x10\x11;\x00\x92\xd5$\xbf \xdc\x86\xd4\xe2\x02" +
"\x80\xe4H\x92\x8f\xc6\xde\xef\x1a!o\x04\x8dZF\xef" +
"\x9c\xa5j\xfd\xd66o<\x8a\xd6LE\xcd\xe4\x0d\x06" +
"Ai-$\x9b\xe6P\xb5w\xe7\xa6\xd3\x17\x13\x8d\x93" +
"D\xc24\x9a\xfeL\xe5\x1c^\x94C\xaa<-\x86\xa1" +
"\xa3Q\xd4\xc4N\x0c\x9aX\xbf\x87]\x10\x8c\x87D\xae" +
"\xa90\x1f\xea\x08\xda\xee\xfa\x94\x927Y\x1f\x1f\x80g" +
"\x86?\x050\x97\xe8\xf9L:\xc1@\xb0\x8c\x9e\"\x08" +
"\x06mf\x93,\xe6e.w\xd4\xeb\xfdl\x81\xde\xaf" +
"\x13\xa1Q\xaf7oG\xefG\xa8\xbe\xa3^\x0f\x83>" +
"\xa3^\xf7\x83\xc3\xd1\xde\xa3\xde\xf3x\xbe\xbae,\x94" +
"1\xcei\x02:\xe4\xc1\xa1\xff;m\xd1M/;\xdf" +
"1\x81W\x90\xfe\x1d\x00\x00\xff\xff#\xafZ\xc1"
const schema_db8274f9144abc7e = "x\xda\xccY{p\x14e\xb6?\xa7{&\x9d@\x86" +
"IW\x0f\x04\xa6\xe4\xe6^\x0a\xcaK\x14\x14\xb8\xdeB" +
"\xae\xde\x04L\xb8&\xf2H\xcf\x90\xbb\x96\xa0eg\xe6" +
"#tv\xa6{\xe8\xee\x89\x04A\x1e\x82\x88\xe5\x0b\x04" +
"E\x94\x95\xc5r\xb7D\xdd\x85U\xd7eKke\xd7" +
"\x17\xa5\xa8X\xb8\x05\x8a\xb5\xab\xc8>(\\W\xc4\xb5" +
"\xdcu\xed\xad\xd3=\xfd\xc8$$A\xf6\x8f\xfdor" +
"\xfa\xfb\xcew\xce\xef\xfc\xbes\xcewr\xe9w*\x1b" +
"\xb9)\xd1\xda\x18\x80\xbc-Za\xb3\xfaw\x96\xef\x9c" +
"\xf0\xab\xb5 '\x11\xed[\x9eoM|e\xad}\x1f" +
"\xa2\xbc\x000mi\xc5r\x94\xd6W\x08\x00\xd2\x9a\x8a" +
"\xdf\x03\xda\xb7\x8d\xda\xf3\xc8c\xcd[n\x051\xc9\x07" +
"\x8b\x01\xa71\xa1\x15\xa5\x1e\x81V\x16\x85\x0d\xd2\xbb\xf4" +
"\xcb\xbeF\xbcda\xe2\xed7iuXu\x84T\xbf" +
" \xd4\xa3t\xd0\xd9p@ \xd5W\xe4\xdf\xda\xf5\xdf" +
"[__\x07b\x92\xeb\xa5\xfa\xd9\xca\xe5(\x1d\xa8\xa4" +
"\x95/W\xce\x07\xb4?\xdf2\xfa\x89\xef\xbf\xf9\xdaz" +
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func init() {
schemas.Register(schema_db8274f9144abc7e,

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