node: add last observed vaa to hb

node/pkg/p2p/p2p.go

@@ -535,6 +535,8 @@ func Run(params *RunParams) func(ctx context.Context) error {
 							for _, v := range DefaultRegistry.networkStats {
 								errCtr := DefaultRegistry.GetErrorCount(vaa.ChainID(v.Id)) // #nosec G115 -- This is safe as chain id is constrained in SetNetworkStats
 								v.ErrorCount = errCtr
+								lastVaaTs := DefaultRegistry.GetLastObservationSignedAtTimestamp(vaa.ChainID(v.Id)) // #nosec G115 -- This is safe as chain id is constrained in SetNetworkStats
+								v.LastObservationSignedAt = lastVaaTs
 								networks = append(networks, v)
 							}
 

node/pkg/p2p/registry.go

@@ -18,12 +18,17 @@ type registry struct {
 	// Per-chain error counters
 	errorCounters  map[vaa.ChainID]uint64
 	errorCounterMu sync.Mutex
+
+	// Per-chain last VAA timestamp (Unix nanoseconds)
+	lastObservationSignedAt   map[vaa.ChainID]int64
+	lastObservationSignedAtMu sync.RWMutex
 }
 
 func NewRegistry() *registry {
 	return &registry{
-		networkStats:  map[vaa.ChainID]*gossipv1.Heartbeat_Network{},
-		errorCounters: map[vaa.ChainID]uint64{},
+		networkStats:            map[vaa.ChainID]*gossipv1.Heartbeat_Network{},
+		errorCounters:           map[vaa.ChainID]uint64{},
+		lastObservationSignedAt: map[vaa.ChainID]int64{},
 	}
 }
 
@@ -51,3 +56,21 @@ func (r *registry) GetErrorCount(chain vaa.ChainID) uint64 {
 	defer r.errorCounterMu.Unlock()
 	return r.errorCounters[chain]
 }
+
+// SetLastObservationSignedAtTimestamp sets the timestamp (Unix nanoseconds) of the last time an observation was signed for a chain.
+func (r *registry) SetLastObservationSignedAtTimestamp(chain vaa.ChainID, timestamp int64) {
+	r.lastObservationSignedAtMu.Lock()
+	defer r.lastObservationSignedAtMu.Unlock()
+	if existing, ok := r.lastObservationSignedAt[chain]; ok && existing >= timestamp {
+		return
+	}
+	r.lastObservationSignedAt[chain] = timestamp
+}
+
+// GetLastObservationSignedAtTimestamp returns the timestamp (Unix nanoseconds) of the last time an observation was signed for a chain.
+// Returns 0 if no observation has been signed yet for this chain.
+func (r *registry) GetLastObservationSignedAtTimestamp(chain vaa.ChainID) int64 {
+	r.lastObservationSignedAtMu.RLock()
+	defer r.lastObservationSignedAtMu.RUnlock()
+	return r.lastObservationSignedAt[chain]
+}

node/pkg/p2p/registry_test.go

@@ -53,3 +53,77 @@ func TestGetErrorCount(t *testing.T) {
 	assert.Equal(t, uint64(1), registry.GetErrorCount(vaa.ChainIDEthereum))
 	assert.Equal(t, uint64(0), registry.GetErrorCount(vaa.ChainIDSolana))
 }
+
+func TestSetLastVaaTimestamp(t *testing.T) {
+	registry := NewRegistry()
+
+	// Test setting timestamp for a chain (Unix nanoseconds, like time.Now().UnixNano())
+	timestamp := int64(1234567890123456789)
+	registry.SetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum, timestamp)
+
+	// Verify the timestamp was set
+	assert.Equal(t, timestamp, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+
+	// Verify other chains still have zero timestamp
+	assert.Equal(t, int64(0), registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDSolana))
+}
+
+func TestGetLastVaaTimestamp(t *testing.T) {
+	registry := NewRegistry()
+
+	// Test that unset chains return zero
+	assert.Equal(t, int64(0), registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+	assert.Equal(t, int64(0), registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDSolana))
+
+	// Set timestamp for Ethereum
+	timestamp1 := int64(1234567890123456789)
+	registry.SetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum, timestamp1)
+	assert.Equal(t, timestamp1, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+
+	// Set timestamp for Solana
+	timestamp2 := int64(1987654321098765432)
+	registry.SetLastObservationSignedAtTimestamp(vaa.ChainIDSolana, timestamp2)
+	assert.Equal(t, timestamp2, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDSolana))
+
+	// Ethereum timestamp should remain unchanged
+	assert.Equal(t, timestamp1, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+}
+
+func TestUpdateLastVaaTimestamp(t *testing.T) {
+	registry := NewRegistry()
+
+	// Set initial timestamp
+	timestamp1 := int64(1000000000000000000)
+	registry.SetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum, timestamp1)
+	assert.Equal(t, timestamp1, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+
+	// Update to a newer timestamp
+	timestamp2 := int64(2000000000000000000)
+	registry.SetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum, timestamp2)
+	assert.Equal(t, timestamp2, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+}
+
+func TestSetLastObservationSignedAtTimestampRejectsOlderTimestamp(t *testing.T) {
+	registry := NewRegistry()
+
+	// Set initial timestamp
+	newerTimestamp := int64(2000000000000000000)
+	registry.SetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum, newerTimestamp)
+	assert.Equal(t, newerTimestamp, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+
+	// Try to set an older timestamp - should be rejected
+	olderTimestamp := int64(1000000000000000000)
+	registry.SetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum, olderTimestamp)
+
+	// Timestamp should remain unchanged (not updated to older value)
+	assert.Equal(t, newerTimestamp, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+
+	// Try to set the same timestamp - should be rejected (not less than, >= check)
+	registry.SetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum, newerTimestamp)
+	assert.Equal(t, newerTimestamp, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+
+	// But setting a newer timestamp should work
+	evenNewerTimestamp := int64(3000000000000000000)
+	registry.SetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum, evenNewerTimestamp)
+	assert.Equal(t, evenNewerTimestamp, registry.GetLastObservationSignedAtTimestamp(vaa.ChainIDEthereum))
+}

node/pkg/processor/message.go

@@ -15,6 +15,7 @@ import (
 	"go.uber.org/zap/zapcore"
 
 	"github.com/certusone/wormhole/node/pkg/common"
+	"github.com/certusone/wormhole/node/pkg/p2p"
 	"github.com/wormhole-foundation/wormhole/sdk/vaa"
 )
 
@@ -99,6 +100,9 @@ func (p *Processor) handleMessage(ctx context.Context, k *common.MessagePublicat
 	observationsReceivedTotal.Inc()
 	observationsReceivedByGuardianAddressTotal.WithLabelValues(p.ourAddr.Hex()).Inc()
 
+	// Update the last VAA timestamp for this chain in the registry.
+	p.pegLastObservationSignedAtTime(k.EmitterChain)
+
 	// Get / create our state entry.
 	s := p.state.signatures[hash]
 	if s == nil {
@@ -128,3 +132,10 @@ func (p *Processor) handleMessage(ctx context.Context, k *common.MessagePublicat
 		timeToHandleObservation.Observe(float64(time.Since(start).Microseconds()))
 	}
 }
+
+// pegLastObservationSignedAtTime updates the registry with the current wall clock timestamp of the last signed observation for a chain.
+func (p *Processor) pegLastObservationSignedAtTime(chain vaa.ChainID) {
+	// Get current time as Unix nanoseconds.
+	timestamp := time.Now()
+	p2p.DefaultRegistry.SetLastObservationSignedAtTimestamp(chain, timestamp.UnixNano())
+}

node/pkg/proto/gossip/v1/gossip.pb.go

@@ -1118,6 +1118,8 @@ type Heartbeat_Network struct {
 	SafeHeight int64 `protobuf:"varint,5,opt,name=safe_height,json=safeHeight,proto3" json:"safe_height,omitempty"`
 	// Finalized block height of the node, if supported.
 	FinalizedHeight int64 `protobuf:"varint,6,opt,name=finalized_height,json=finalizedHeight,proto3" json:"finalized_height,omitempty"`
+	// UNIX timestamp of the last time a VAA was observed for this chain.
+	LastObservationSignedAt int64 `protobuf:"varint,7,opt,name=last_observation_signed_at,json=lastObservationSignedAt,proto3" json:"last_observation_signed_at,omitempty"`
 }
 
 func (x *Heartbeat_Network) Reset() {
@@ -1194,6 +1196,13 @@ func (x *Heartbeat_Network) GetFinalizedHeight() int64 {
 	return 0
 }
 
+func (x *Heartbeat_Network) GetLastObservationSignedAt() int64 {
+	if x != nil {
+		return x.LastObservationSignedAt
+	}
+	return 0
+}
+
 type ChainGovernorConfig_Chain struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1601,7 +1610,7 @@ var file_gossip_v1_gossip_proto_rawDesc = []byte{
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 }
 
 var (

proto/gossip/v1/gossip.proto

@@ -50,9 +50,11 @@ message Heartbeat {
     // Connection error count
     uint64 error_count = 4;
     // Safe block height of the node, if supported.
-    int64 safe_height = 5;    
+    int64 safe_height = 5;
     // Finalized block height of the node, if supported.
     int64 finalized_height = 6;
+    // UNIX timestamp of the last time a VAA was observed for this chain.
+    int64 last_observation_signed_at = 7;
   }
   repeated Network networks = 4;