support stats in policy

app/policy/config.go

@@ -46,6 +46,10 @@ func (p *Policy) overrideWith(another *Policy) {
 	if another.Timeout != nil {
 		p.Timeout.overrideWith(another.Timeout)
 	}
+	if another.Stats != nil && p.Stats == nil {
+		p.Stats = new(Policy_Stats)
+		*p.Stats = *another.Stats
+	}
 }
 
 func (p *Policy) ToCorePolicy() core.Policy {
@@ -56,5 +60,8 @@ func (p *Policy) ToCorePolicy() core.Policy {
 		cp.Timeouts.DownlinkOnly = p.Timeout.DownlinkOnly.Duration()
 		cp.Timeouts.UplinkOnly = p.Timeout.UplinkOnly.Duration()
 	}
+	if p.Stats != nil {
+		cp.Stats.EnablePerUser = p.Stats.EnablePerUser
+	}
 	return cp
 }

app/policy/config.pb.go

@@ -33,6 +33,7 @@ func (m *Second) GetValue() uint32 {
 
 type Policy struct {
 	Timeout *Policy_Timeout `protobuf:"bytes,1,opt,name=timeout" json:"timeout,omitempty"`
+	Stats   *Policy_Stats   `protobuf:"bytes,2,opt,name=stats" json:"stats,omitempty"`
 }
 
 func (m *Policy) Reset()                    { *m = Policy{} }
@@ -47,6 +48,13 @@ func (m *Policy) GetTimeout() *Policy_Timeout {
 	return nil
 }
 
+func (m *Policy) GetStats() *Policy_Stats {
+	if m != nil {
+		return m.Stats
+	}
+	return nil
+}
+
 // Timeout is a message for timeout settings in various stages, in seconds.
 type Policy_Timeout struct {
 	Handshake      *Second `protobuf:"bytes,1,opt,name=handshake" json:"handshake,omitempty"`
@@ -88,6 +96,22 @@ func (m *Policy_Timeout) GetDownlinkOnly() *Second {
 	return nil
 }
 
+type Policy_Stats struct {
+	EnablePerUser bool `protobuf:"varint,1,opt,name=enable_per_user,json=enablePerUser" json:"enable_per_user,omitempty"`
+}
+
+func (m *Policy_Stats) Reset()                    { *m = Policy_Stats{} }
+func (m *Policy_Stats) String() string            { return proto.CompactTextString(m) }
+func (*Policy_Stats) ProtoMessage()               {}
+func (*Policy_Stats) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1, 1} }
+
+func (m *Policy_Stats) GetEnablePerUser() bool {
+	if m != nil {
+		return m.EnablePerUser
+	}
+	return false
+}
+
 type Config struct {
 	Level map[uint32]*Policy `protobuf:"bytes,1,rep,name=level" json:"level,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
 }
@@ -108,33 +132,38 @@ func init() {
 	proto.RegisterType((*Second)(nil), "v2ray.core.app.policy.Second")
 	proto.RegisterType((*Policy)(nil), "v2ray.core.app.policy.Policy")
 	proto.RegisterType((*Policy_Timeout)(nil), "v2ray.core.app.policy.Policy.Timeout")
+	proto.RegisterType((*Policy_Stats)(nil), "v2ray.core.app.policy.Policy.Stats")
 	proto.RegisterType((*Config)(nil), "v2ray.core.app.policy.Config")
 }
 
 func init() { proto.RegisterFile("v2ray.com/core/app/policy/config.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
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 }

app/policy/config.proto

@@ -19,7 +19,12 @@ message Policy {
     Second downlink_only = 4;
   }
 
+  message Stats {
+    bool enable_per_user = 1;
+  }
+
   Timeout timeout = 1;
+  Stats stats = 2;
 }
 
 message Config {

policy.go

@@ -19,9 +19,14 @@ type TimeoutPolicy struct {
 	DownlinkOnly time.Duration
 }
 
+type StatsPolicy struct {
+	EnablePerUser bool
+}
+
 // Policy is session based settings for controlling V2Ray requests. It contains various settings (or limits) that may differ for different users in the context.
 type Policy struct {
 	Timeouts TimeoutPolicy // Timeout settings
+	Stats    StatsPolicy
 }
 
 // PolicyManager is a feature that provides Policy for the given user by its id or level.
@@ -41,6 +46,9 @@ func DefaultPolicy() Policy {
 			UplinkOnly:     time.Second * 5,
 			DownlinkOnly:   time.Second * 30,
 		},
+		Stats: StatsPolicy{
+			EnablePerUser: false,
+		},
 	}
 }