From 94ae34f33d576dd7991bd10dc29c24ba2ac842e1 Mon Sep 17 00:00:00 2001 From: Dmitri Date: Mon, 15 Jun 2026 17:32:35 +0200 Subject: [PATCH] add tracking of window starts and ends Signed-off-by: Dmitri --- client/internal/netflow/manager.go | 8 +- .../netflow/store/event_aggregation_test.go | 16 +- client/internal/netflow/store/memory.go | 11 +- client/internal/netflow/types/types.go | 6 +- flow/proto/flow.pb.go | 193 ++++++++++-------- flow/proto/flow.proto | 3 + flow/proto/flow_grpc.pb.go | 7 +- 7 files changed, 147 insertions(+), 97 deletions(-) diff --git a/client/internal/netflow/manager.go b/client/internal/netflow/manager.go index f492098d2..adcfb0faa 100644 --- a/client/internal/netflow/manager.go +++ b/client/internal/netflow/manager.go @@ -297,9 +297,11 @@ func (m *Manager) send(event *nftypes.Event) error { func toProtoEvent(publicKey []byte, event *nftypes.Event) *proto.FlowEvent { protoEvent := &proto.FlowEvent{ - EventId: event.ID[:], - Timestamp: timestamppb.New(event.Timestamp), - PublicKey: publicKey, + EventId: event.ID[:], + Timestamp: timestamppb.New(event.Timestamp), + PublicKey: publicKey, + WindowStart: timestamppb.New(event.WindowStart), + WindowEnd: timestamppb.New(event.WindowEnd), FlowFields: &proto.FlowFields{ FlowId: event.FlowID[:], RuleId: event.RuleID, diff --git a/client/internal/netflow/store/event_aggregation_test.go b/client/internal/netflow/store/event_aggregation_test.go index a0fe8ef8e..c7769c937 100644 --- a/client/internal/netflow/store/event_aggregation_test.go +++ b/client/internal/netflow/store/event_aggregation_test.go @@ -40,10 +40,12 @@ func TestFlowAggregation(t *testing.T) { for _, tt := range tests { t.Run(tt.description+" "+protocol.String(), func(t *testing.T) { store := NewAggregatingMemoryStore() + store.WindowEnd = time.Now().Add(5 * time.Second) + allExpected := make([]*types.Event, 0) for i := 0; i < 2; i++ { - inEvents, expected := generateEvents(tt.eventTypes, protocol, types.Ingress, 0) + inEvents, expected := generateEvents(tt.eventTypes, protocol, types.Ingress, 0, store.WindowStart, store.WindowEnd) for _, e := range inEvents { store.StoreEvent(e) } @@ -86,9 +88,11 @@ func TestIcmpEventAggregation(t *testing.T) { for _, tt := range tests { t.Run(tt.description+" "+protocol.String(), func(t *testing.T) { store := NewAggregatingMemoryStore() + store.WindowEnd = time.Now().Add(5 * time.Second) + allExpected := make([]*types.Event, 0) for _, icmpType := range icmpTypes { - events, expected := generateEvents(tt.eventTypes, protocol, types.Ingress, icmpType) + events, expected := generateEvents(tt.eventTypes, protocol, types.Ingress, icmpType, store.WindowStart, store.WindowEnd) for _, e := range events { store.StoreEvent(e) } @@ -107,7 +111,7 @@ func ipAddr(a string) netip.Addr { return addr } -func generateEvents(eventTypes []types.Type, protocol types.Protocol, direction types.Direction, icmpType uint8) ([]*types.Event, *types.Event) { +func generateEvents(eventTypes []types.Type, protocol types.Protocol, direction types.Direction, icmpType uint8, windowStart, windowEnd time.Time) ([]*types.Event, *types.Event) { var rxPackets, txPackets, rxBytes, txBytes uint64 inEvents := make([]*types.Event, 0) ts := time.Now() @@ -160,8 +164,10 @@ func generateEvents(eventTypes []types.Type, protocol types.Protocol, direction } } aggregatedEvent := &types.Event{ - ID: inEvents[0].ID, - Timestamp: inEvents[0].Timestamp, + ID: inEvents[0].ID, + Timestamp: inEvents[0].Timestamp, + WindowStart: windowStart, + WindowEnd: windowEnd, EventFields: types.EventFields{ FlowID: flowId, Type: inEvents[0].Type, diff --git a/client/internal/netflow/store/memory.go b/client/internal/netflow/store/memory.go index 1a3b9227a..fb66dccbf 100644 --- a/client/internal/netflow/store/memory.go +++ b/client/internal/netflow/store/memory.go @@ -24,6 +24,8 @@ type Memory struct { type AggregatingMemory struct { Memory + WindowStart time.Time + WindowEnd time.Time } func (m *Memory) StoreEvent(event *types.Event) { @@ -57,15 +59,17 @@ func (m *Memory) DeleteEvents(ids []uuid.UUID) { } func NewAggregatingMemoryStore() *AggregatingMemory { - return &AggregatingMemory{Memory{events: make(map[uuid.UUID]*types.Event)}} + return &AggregatingMemory{WindowStart: time.Now(), Memory: Memory{events: make(map[uuid.UUID]*types.Event)}} } func (am *AggregatingMemory) ResetAggregationWindow() types.FlowEventAggregator { am.mux.Lock() defer am.mux.Unlock() - toret := AggregatingMemory{Memory: Memory{events: am.events}} + toret := AggregatingMemory{WindowStart: am.WindowStart, WindowEnd: time.Now(), Memory: Memory{events: am.events}} + am.events = make(map[uuid.UUID]*types.Event) + am.WindowStart = time.Now() return &toret } @@ -99,6 +103,9 @@ func (am *AggregatingMemory) GetAggregatedEvents() []*types.Event { case types.TypeEnd: event.NumOfEnds += 1 } + + event.WindowStart = am.WindowStart + event.WindowEnd = am.WindowEnd continue } diff --git a/client/internal/netflow/types/types.go b/client/internal/netflow/types/types.go index d0952fd2c..ccb2da66b 100644 --- a/client/internal/netflow/types/types.go +++ b/client/internal/netflow/types/types.go @@ -70,8 +70,10 @@ const ( ) type Event struct { - ID uuid.UUID - Timestamp time.Time + ID uuid.UUID + Timestamp time.Time + WindowStart time.Time + WindowEnd time.Time EventFields } diff --git a/flow/proto/flow.pb.go b/flow/proto/flow.pb.go index b9f0d7b94..710024f0e 100644 --- a/flow/proto/flow.pb.go +++ b/flow/proto/flow.pb.go @@ -134,9 +134,11 @@ type FlowEvent struct { // When the event occurred Timestamp *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=timestamp,proto3" json:"timestamp,omitempty"` // Public key of the sending peer - PublicKey []byte `protobuf:"bytes,3,opt,name=public_key,json=publicKey,proto3" json:"public_key,omitempty"` - FlowFields *FlowFields `protobuf:"bytes,4,opt,name=flow_fields,json=flowFields,proto3" json:"flow_fields,omitempty"` - IsInitiator bool `protobuf:"varint,5,opt,name=isInitiator,proto3" json:"isInitiator,omitempty"` + PublicKey []byte `protobuf:"bytes,3,opt,name=public_key,json=publicKey,proto3" json:"public_key,omitempty"` + FlowFields *FlowFields `protobuf:"bytes,4,opt,name=flow_fields,json=flowFields,proto3" json:"flow_fields,omitempty"` + IsInitiator bool `protobuf:"varint,5,opt,name=isInitiator,proto3" json:"isInitiator,omitempty"` + WindowStart *timestamppb.Timestamp `protobuf:"bytes,6,opt,name=window_start,json=windowStart,proto3" json:"window_start,omitempty"` + WindowEnd *timestamppb.Timestamp `protobuf:"bytes,7,opt,name=window_end,json=windowEnd,proto3" json:"window_end,omitempty"` } func (x *FlowEvent) Reset() { @@ -206,6 +208,20 @@ func (x *FlowEvent) GetIsInitiator() bool { return false } +func (x *FlowEvent) GetWindowStart() *timestamppb.Timestamp { + if x != nil { + return x.WindowStart + } + return nil +} + +func (x *FlowEvent) GetWindowEnd() *timestamppb.Timestamp { + if x != nil { + return x.WindowEnd + } + return nil +} + type FlowEventAck struct { state protoimpl.MessageState sizeCache protoimpl.SizeCache @@ -602,7 +618,7 @@ var file_flow_proto_rawDesc = []byte{ 0x0a, 0x0a, 0x66, 0x6c, 0x6f, 0x77, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x04, 0x66, 0x6c, 0x6f, 0x77, 0x1a, 0x1f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x2e, 0x70, 0x72, - 0x6f, 0x74, 0x6f, 0x22, 0xd4, 0x01, 0x0a, 0x09, 0x46, 0x6c, 0x6f, 0x77, 0x45, 0x76, 0x65, 0x6e, + 0x6f, 0x74, 0x6f, 0x22, 0xce, 0x02, 0x0a, 0x09, 0x46, 0x6c, 0x6f, 0x77, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x12, 0x19, 0x0a, 0x08, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x5f, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x07, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x49, 0x64, 0x12, 0x38, 0x0a, 0x09, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, @@ -615,75 +631,82 @@ var file_flow_proto_rawDesc = []byte{ 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flow.FlowService.Events:input_type -> flow.FlowEvent - 3, // 7: flow.FlowService.Events:output_type -> flow.FlowEventAck - 7, // [7:8] is the sub-list for method output_type - 6, // [6:7] is the sub-list for method input_type - 6, // [6:6] is the sub-list for extension type_name - 6, // [6:6] is the sub-list for extension extendee - 0, // [0:6] is the sub-list for field type_name + 7, // 2: flow.FlowEvent.window_start:type_name -> google.protobuf.Timestamp + 7, // 3: flow.FlowEvent.window_end:type_name -> google.protobuf.Timestamp + 0, // 4: flow.FlowFields.type:type_name -> flow.Type + 1, // 5: flow.FlowFields.direction:type_name -> flow.Direction + 5, // 6: flow.FlowFields.port_info:type_name -> flow.PortInfo + 6, // 7: flow.FlowFields.icmp_info:type_name -> flow.ICMPInfo + 2, // 8: flow.FlowService.Events:input_type -> flow.FlowEvent + 3, // 9: flow.FlowService.Events:output_type -> flow.FlowEventAck + 9, // [9:10] is the sub-list for method output_type + 8, // [8:9] is the sub-list for method input_type + 8, // [8:8] is the sub-list for extension type_name + 8, // [8:8] is the sub-list for extension extendee + 0, // [0:8] is the sub-list for field type_name } func init() { file_flow_proto_init() } diff --git a/flow/proto/flow.proto b/flow/proto/flow.proto index ec207d2f0..1c9e728d2 100644 --- a/flow/proto/flow.proto +++ b/flow/proto/flow.proto @@ -24,6 +24,9 @@ message FlowEvent { FlowFields flow_fields = 4; bool isInitiator = 5; + + google.protobuf.Timestamp window_start = 6; + google.protobuf.Timestamp window_end = 7; } message FlowEventAck { diff --git a/flow/proto/flow_grpc.pb.go b/flow/proto/flow_grpc.pb.go index 6d9a392d0..9ae9702a5 100644 --- a/flow/proto/flow_grpc.pb.go +++ b/flow/proto/flow_grpc.pb.go @@ -1,8 +1,13 @@ +// Code generated by protoc-gen-go-grpc. DO NOT EDIT. +// versions: +// - protoc-gen-go-grpc v1.6.1 +// - protoc v3.21.9 +// source: flow.proto + package proto import ( context "context" - grpc "google.golang.org/grpc" codes "google.golang.org/grpc/codes" status "google.golang.org/grpc/status"