feat: metrics including pprof, expvars

This commit is contained in:
yichya 2022-03-25 11:24:23 +08:00 committed by yuhan6665
parent 91ffb7617d
commit 35eb165f63
9 changed files with 530 additions and 1 deletions

148
app/metrics/config.pb.go Normal file
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@ -0,0 +1,148 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.27.1
// protoc v3.18.0
// source: config.proto
package metrics
import (
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
// Config is the settings for metrics.
type Config struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// Tag of the outbound handler that handles metrics http connections.
Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
}
func (x *Config) Reset() {
*x = Config{}
if protoimpl.UnsafeEnabled {
mi := &file_config_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *Config) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*Config) ProtoMessage() {}
func (x *Config) ProtoReflect() protoreflect.Message {
mi := &file_config_proto_msgTypes[0]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use Config.ProtoReflect.Descriptor instead.
func (*Config) Descriptor() ([]byte, []int) {
return file_config_proto_rawDescGZIP(), []int{0}
}
func (x *Config) GetTag() string {
if x != nil {
return x.Tag
}
return ""
}
var File_config_proto protoreflect.FileDescriptor
var file_config_proto_rawDesc = []byte{
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}
var (
file_config_proto_rawDescOnce sync.Once
file_config_proto_rawDescData = file_config_proto_rawDesc
)
func file_config_proto_rawDescGZIP() []byte {
file_config_proto_rawDescOnce.Do(func() {
file_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_config_proto_rawDescData)
})
return file_config_proto_rawDescData
}
var file_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
var file_config_proto_goTypes = []interface{}{
(*Config)(nil), // 0: xray.app.metrics.Config
}
var file_config_proto_depIdxs = []int32{
0, // [0:0] is the sub-list for method output_type
0, // [0:0] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
}
func init() { file_config_proto_init() }
func file_config_proto_init() {
if File_config_proto != nil {
return
}
if !protoimpl.UnsafeEnabled {
file_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*Config); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_config_proto_rawDesc,
NumEnums: 0,
NumMessages: 1,
NumExtensions: 0,
NumServices: 0,
},
GoTypes: file_config_proto_goTypes,
DependencyIndexes: file_config_proto_depIdxs,
MessageInfos: file_config_proto_msgTypes,
}.Build()
File_config_proto = out.File
file_config_proto_rawDesc = nil
file_config_proto_goTypes = nil
file_config_proto_depIdxs = nil
}

13
app/metrics/config.proto Normal file
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@ -0,0 +1,13 @@
syntax = "proto3";
package xray.app.metrics;
option csharp_namespace = "Xray.App.Metrics";
option go_package = "github.com/xtls/xray-core/app/metrics";
option java_package = "com.xray.app.metrics";
option java_multiple_files = true;
// Config is the settings for metrics.
message Config {
// Tag of the outbound handler that handles metrics http connections.
string tag = 1;
}

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@ -0,0 +1,9 @@
package metrics
import "github.com/xtls/xray-core/common/errors"
type errPathObjHolder struct{}
func newError(values ...interface{}) *errors.Error {
return errors.New(values...).WithPathObj(errPathObjHolder{})
}

115
app/metrics/metrics.go Normal file
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@ -0,0 +1,115 @@
package metrics
import (
"context"
"expvar"
"net/http"
_ "net/http/pprof"
"strings"
"github.com/xtls/xray-core/app/observatory"
"github.com/xtls/xray-core/app/stats"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/signal/done"
"github.com/xtls/xray-core/core"
"github.com/xtls/xray-core/features/extension"
"github.com/xtls/xray-core/features/outbound"
feature_stats "github.com/xtls/xray-core/features/stats"
)
type MetricsHandler struct {
ohm outbound.Manager
statsManager feature_stats.Manager
observatory extension.Observatory
tag string
}
// NewMetricsHandler creates a new MetricsHandler based on the given config.
func NewMetricsHandler(ctx context.Context, config *Config) (*MetricsHandler, error) {
c := &MetricsHandler{
tag: config.Tag,
}
common.Must(core.RequireFeatures(ctx, func(om outbound.Manager, sm feature_stats.Manager) {
c.statsManager = sm
c.ohm = om
}))
expvar.Publish("stats", expvar.Func(func() interface{} {
manager, ok := c.statsManager.(*stats.Manager)
if !ok {
return nil
}
var resp = map[string]map[string]map[string]int64{
"inbound": {},
"outbound": {},
"user": {},
}
manager.VisitCounters(func(name string, counter feature_stats.Counter) bool {
nameSplit := strings.Split(name, ">>>")
typeName, tagOrUser, direction := nameSplit[0], nameSplit[1], nameSplit[3]
if item, found := resp[typeName][tagOrUser]; found {
item[direction] = counter.Value()
} else {
resp[typeName][tagOrUser] = map[string]int64{
direction: counter.Value(),
}
}
return true
})
return resp
}))
expvar.Publish("observatory", expvar.Func(func() interface{} {
if c.observatory == nil {
common.Must(core.RequireFeatures(ctx, func(observatory extension.Observatory) error {
c.observatory = observatory
return nil
}))
}
var resp = map[string]*observatory.OutboundStatus{}
if o, err := c.observatory.GetObservation(context.Background()); err != nil {
return err
} else {
for _, x := range o.(*observatory.ObservationResult).GetStatus() {
resp[x.OutboundTag] = x
}
}
return resp
}))
return c, nil
}
func (p *MetricsHandler) Type() interface{} {
return (*MetricsHandler)(nil)
}
func (p *MetricsHandler) Start() error {
listener := &OutboundListener{
buffer: make(chan net.Conn, 4),
done: done.New(),
}
go func() {
if err := http.Serve(listener, http.DefaultServeMux); err != nil {
newError("failed to start metrics server").Base(err).AtError().WriteToLog()
}
}()
if err := p.ohm.RemoveHandler(context.Background(), p.tag); err != nil {
newError("failed to remove existing handler").WriteToLog()
}
return p.ohm.AddHandler(context.Background(), &Outbound{
tag: p.tag,
listener: listener,
})
}
func (p *MetricsHandler) Close() error {
return nil
}
func init() {
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, cfg interface{}) (interface{}, error) {
return NewMetricsHandler(ctx, cfg.(*Config))
}))
}

109
app/metrics/outbound.go Normal file
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@ -0,0 +1,109 @@
package metrics
import (
"context"
"sync"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/net/cnc"
"github.com/xtls/xray-core/common/signal/done"
"github.com/xtls/xray-core/transport"
)
// OutboundListener is a net.Listener for listening pprof http connections.
type OutboundListener struct {
buffer chan net.Conn
done *done.Instance
}
func (l *OutboundListener) add(conn net.Conn) {
select {
case l.buffer <- conn:
case <-l.done.Wait():
conn.Close()
default:
conn.Close()
}
}
// Accept implements net.Listener.
func (l *OutboundListener) Accept() (net.Conn, error) {
select {
case <-l.done.Wait():
return nil, newError("listen closed")
case c := <-l.buffer:
return c, nil
}
}
// Close implement net.Listener.
func (l *OutboundListener) Close() error {
common.Must(l.done.Close())
L:
for {
select {
case c := <-l.buffer:
c.Close()
default:
break L
}
}
return nil
}
// Addr implements net.Listener.
func (l *OutboundListener) Addr() net.Addr {
return &net.TCPAddr{
IP: net.IP{0, 0, 0, 0},
Port: 0,
}
}
// Outbound is a outbound.Handler that handles pprof http connections.
type Outbound struct {
tag string
listener *OutboundListener
access sync.RWMutex
closed bool
}
// Dispatch implements outbound.Handler.
func (co *Outbound) Dispatch(ctx context.Context, link *transport.Link) {
co.access.RLock()
if co.closed {
common.Interrupt(link.Reader)
common.Interrupt(link.Writer)
co.access.RUnlock()
return
}
closeSignal := done.New()
c := cnc.NewConnection(cnc.ConnectionInputMulti(link.Writer), cnc.ConnectionOutputMulti(link.Reader), cnc.ConnectionOnClose(closeSignal))
co.listener.add(c)
co.access.RUnlock()
<-closeSignal.Wait()
}
// Tag implements outbound.Handler.
func (co *Outbound) Tag() string {
return co.tag
}
// Start implements common.Runnable.
func (co *Outbound) Start() error {
co.access.Lock()
co.closed = false
co.access.Unlock()
return nil
}
// Close implements common.Closable.
func (co *Outbound) Close() error {
co.access.Lock()
defer co.access.Unlock()
co.closed = true
return co.listener.Close()
}

19
infra/conf/metrics.go Normal file
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@ -0,0 +1,19 @@
package conf
import (
"github.com/xtls/xray-core/app/metrics"
)
type MetricsConfig struct {
Tag string `json:"tag"`
}
func (c *MetricsConfig) Build() (*metrics.Config, error) {
if c.Tag == "" {
return nil, newError("metrics tag can't be empty.")
}
return &metrics.Config{
Tag: c.Tag,
}, nil
}

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@ -411,6 +411,7 @@ type Config struct {
Transport *TransportConfig `json:"transport"`
Policy *PolicyConfig `json:"policy"`
API *APIConfig `json:"api"`
Metrics *MetricsConfig `json:"metrics"`
Stats *StatsConfig `json:"stats"`
Reverse *ReverseConfig `json:"reverse"`
FakeDNS *FakeDNSConfig `json:"fakeDns"`
@ -461,6 +462,9 @@ func (c *Config) Override(o *Config, fn string) {
if o.API != nil {
c.API = o.API
}
if o.Metrics != nil {
c.Metrics = o.Metrics
}
if o.Stats != nil {
c.Stats = o.Stats
}
@ -566,7 +570,13 @@ func (c *Config) Build() (*core.Config, error) {
}
config.App = append(config.App, serial.ToTypedMessage(apiConf))
}
if c.Metrics != nil {
metricsConf, err := c.Metrics.Build()
if err != nil {
return nil, err
}
config.App = append(config.App, serial.ToTypedMessage(metricsConf))
}
if c.Stats != nil {
statsConf, err := c.Stats.Build()
if err != nil {

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@ -21,6 +21,7 @@ import (
_ "github.com/xtls/xray-core/app/dns"
_ "github.com/xtls/xray-core/app/dns/fakedns"
_ "github.com/xtls/xray-core/app/log"
_ "github.com/xtls/xray-core/app/metrics"
_ "github.com/xtls/xray-core/app/policy"
_ "github.com/xtls/xray-core/app/reverse"
_ "github.com/xtls/xray-core/app/router"

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@ -0,0 +1,105 @@
package scenarios
import (
"fmt"
"io/ioutil"
"net/http"
"testing"
"github.com/xtls/xray-core/app/metrics"
"github.com/xtls/xray-core/app/proxyman"
"github.com/xtls/xray-core/app/router"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/serial"
"github.com/xtls/xray-core/core"
"github.com/xtls/xray-core/proxy/dokodemo"
"github.com/xtls/xray-core/proxy/freedom"
"github.com/xtls/xray-core/testing/servers/tcp"
)
const expectedMessage = "goroutine profile: total"
func TestMetrics(t *testing.T) {
tcpServer := tcp.Server{
MsgProcessor: xor,
}
dest, err := tcpServer.Start()
common.Must(err)
defer tcpServer.Close()
metricsPort := tcp.PickPort()
clientConfig := &core.Config{
App: []*serial.TypedMessage{
serial.ToTypedMessage(&metrics.Config{
Tag: "metrics_out",
}),
serial.ToTypedMessage(&router.Config{
Rule: []*router.RoutingRule{
{
InboundTag: []string{"metrics_in"},
TargetTag: &router.RoutingRule_Tag{
Tag: "metrics_out",
},
},
},
}),
},
Inbound: []*core.InboundHandlerConfig{
{
Tag: "metrics_in",
ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
PortList: &net.PortList{Range: []*net.PortRange{net.SinglePortRange(metricsPort)}},
Listen: net.NewIPOrDomain(net.LocalHostIP),
}),
ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
Address: net.NewIPOrDomain(dest.Address),
Port: uint32(dest.Port),
Networks: []net.Network{net.Network_TCP},
}),
},
},
Outbound: []*core.OutboundHandlerConfig{
{
Tag: "default-outbound",
ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
},
},
}
servers, err := InitializeServerConfigs(clientConfig)
common.Must(err)
defer CloseAllServers(servers)
resp, err := http.Get(fmt.Sprintf("http://127.0.0.1:%d/debug/pprof/goroutine?debug=1", metricsPort))
common.Must(err)
if resp == nil {
t.Error("unexpected pprof nil response")
}
if resp.StatusCode != http.StatusOK {
t.Error("unexpected pprof status code")
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
t.Fatal(err)
}
if string(body)[0:len(expectedMessage)] != expectedMessage {
t.Error("unexpected response body from pprof handler")
}
resp2, err2 := http.Get(fmt.Sprintf("http://127.0.0.1:%d/debug/vars", metricsPort))
common.Must(err2)
if resp2 == nil {
t.Error("unexpected expvars nil response")
}
if resp2.StatusCode != http.StatusOK {
t.Error("unexpected expvars status code")
}
body2, err2 := ioutil.ReadAll(resp2.Body)
if err2 != nil {
t.Fatal(err2)
}
if string(body2)[0] != '{' {
t.Error("unexpected response body from expvars handler")
}
}