fix: PRT: Fix all sync.Map uses

protocol/chainlib/grpc.go

@@ -9,7 +9,6 @@ import (
 	"net/http"
 	"strconv"
 	"strings"
-	"sync"
 	"time"
 
 	"github.com/goccy/go-json"
@@ -50,25 +49,6 @@ type GrpcNodeErrorResponse struct {
 	ErrorCode    uint32 `json:"error_code"`
 }
 
-type grpcDescriptorCache struct {
-	cachedDescriptors sync.Map // method name is the key, method descriptor is the value
-}
-
-func (gdc *grpcDescriptorCache) getDescriptor(methodName string) *desc.MethodDescriptor {
-	if descriptor, ok := gdc.cachedDescriptors.Load(methodName); ok {
-		converted, success := descriptor.(*desc.MethodDescriptor) // convert to a descriptor
-		if success {
-			return converted
-		}
-		utils.LavaFormatError("Failed Converting method descriptor", nil, utils.Attribute{Key: "Method", Value: methodName})
-	}
-	return nil
-}
-
-func (gdc *grpcDescriptorCache) setDescriptor(methodName string, descriptor *desc.MethodDescriptor) {
-	gdc.cachedDescriptors.Store(methodName, descriptor)
-}
-
 type GrpcChainParser struct {
 	BaseChainParser
 
@@ -388,7 +368,7 @@ func (apil *GrpcChainListener) GetListeningAddress() string {
 type GrpcChainProxy struct {
 	BaseChainProxy
 	conn             grpcConnectorInterface
-	descriptorsCache *grpcDescriptorCache
+	descriptorsCache *common.SafeSyncMap[string, *desc.MethodDescriptor]
 }
 type grpcConnectorInterface interface {
 	Close()
@@ -413,7 +393,7 @@ func NewGrpcChainProxy(ctx context.Context, nConns uint, rpcProviderEndpoint lav
 func newGrpcChainProxy(ctx context.Context, averageBlockTime time.Duration, parser ChainParser, conn grpcConnectorInterface, rpcProviderEndpoint lavasession.RPCProviderEndpoint) (ChainProxy, error) {
 	cp := &GrpcChainProxy{
 		BaseChainProxy:   BaseChainProxy{averageBlockTime: averageBlockTime, ErrorHandler: &GRPCErrorHandler{}, ChainID: rpcProviderEndpoint.ChainID, HashedNodeUrl: chainproxy.HashURL(rpcProviderEndpoint.NodeUrls[0].Url)},
-		descriptorsCache: &grpcDescriptorCache{},
+		descriptorsCache: &common.SafeSyncMap[string, *desc.MethodDescriptor]{},
 	}
 	cp.conn = conn
 	if cp.conn == nil {
@@ -471,9 +451,12 @@ func (cp *GrpcChainProxy) SendNodeMsg(ctx context.Context, ch chan interface{},
 	descriptorSource := rpcInterfaceMessages.DescriptorSourceFromServer(cl)
 	svc, methodName := rpcInterfaceMessages.ParseSymbol(nodeMessage.Path)
 
-	// check if we have method descriptor already cached.
-	methodDescriptor := cp.descriptorsCache.getDescriptor(methodName)
-	if methodDescriptor == nil { // method descriptor not cached yet, need to fetch it and add to cache
+	// Check if we have method descriptor already cached.
+	// The reason we do Load and then Store here, instead of LoadOrStore:
+	// On the worst case scenario, where 2 threads are accessing the map at the same time, the same descriptor will be stored twice.
+	// It is better than the alternative, which is always creating the descriptor, since the outcome is the same.
+	methodDescriptor, found, _ := cp.descriptorsCache.Load(methodName)
+	if !found { // method descriptor not cached yet, need to fetch it and add to cache
 		var descriptor desc.Descriptor
 		if descriptor, err = descriptorSource.FindSymbol(svc); err != nil {
 			return nil, "", nil, utils.LavaFormatError("descriptorSource.FindSymbol", err, utils.Attribute{Key: "GUID", Value: ctx})
@@ -488,7 +471,7 @@ func (cp *GrpcChainProxy) SendNodeMsg(ctx context.Context, ch chan interface{},
 		}
 
 		// add the descriptor to the chainProxy cache
-		cp.descriptorsCache.setDescriptor(methodName, methodDescriptor)
+		cp.descriptorsCache.Store(methodName, methodDescriptor)
 	}
 
 	msgFactory := dynamic.NewMessageFactoryWithDefaults()

protocol/chaintracker/chain_tracker.go

@@ -68,6 +68,10 @@ type ChainTracker struct {
 	blockEventsGap          []time.Duration
 	blockTimeUpdatables     map[blockTimeUpdatable]struct{}
 	pmetrics                *metrics.ProviderMetricsManager
+
+	// initial config
+	averageBlockTime time.Duration
+	serverAddress    string
 }
 
 // this function returns block hashes of the blocks: [from block - to block] inclusive. an additional specific block hash can be provided. order is sorted ascending
@@ -570,6 +574,16 @@ func (ct *ChainTracker) serve(ctx context.Context, listenAddr string) error {
 	return nil
 }
 
+func (ct *ChainTracker) StartAndServe(ctx context.Context) error {
+	err := ct.start(ctx, ct.averageBlockTime)
+	if err != nil {
+		return err
+	}
+
+	err = ct.serve(ctx, ct.serverAddress)
+	return err
+}
+
 func NewChainTracker(ctx context.Context, chainFetcher ChainFetcher, config ChainTrackerConfig) (chainTracker *ChainTracker, err error) {
 	if !rand.Initialized() {
 		utils.LavaFormatFatal("can't start chainTracker with nil rand source", nil)
@@ -598,16 +612,13 @@ func NewChainTracker(ctx context.Context, chainFetcher ChainFetcher, config Chai
 		startupTime:             time.Now(),
 		pmetrics:                config.Pmetrics,
 		pollingTimeMultiplier:   time.Duration(pollingTime),
+		averageBlockTime:        config.AverageBlockTime,
+		serverAddress:           config.ServerAddress,
 	}
 	if chainFetcher == nil {
 		return nil, utils.LavaFormatError("can't start chainTracker with nil chainFetcher argument", nil)
 	}
 	chainTracker.endpoint = chainFetcher.FetchEndpoint()
-	err = chainTracker.start(ctx, config.AverageBlockTime)
-	if err != nil {
-		return nil, err
-	}
 
-	err = chainTracker.serve(ctx, config.ServerAddress)
 	return chainTracker, err
 }

protocol/chaintracker/chain_tracker_test.go

@@ -161,6 +161,7 @@ func TestChainTracker(t *testing.T) {
 
 			chainTrackerConfig := chaintracker.ChainTrackerConfig{BlocksToSave: uint64(tt.fetcherBlocks), AverageBlockTime: TimeForPollingMock, ServerBlockMemory: uint64(tt.mockBlocks)}
 			chainTracker, err := chaintracker.NewChainTracker(context.Background(), mockChainFetcher, chainTrackerConfig)
+			chainTracker.StartAndServe(context.Background())
 			require.NoError(t, err)
 			for _, advancement := range tt.advancements {
 				for i := 0; i < int(advancement); i++ {
@@ -218,6 +219,7 @@ func TestChainTrackerRangeOnly(t *testing.T) {
 
 			chainTrackerConfig := chaintracker.ChainTrackerConfig{BlocksToSave: uint64(tt.fetcherBlocks), AverageBlockTime: TimeForPollingMock, ServerBlockMemory: uint64(tt.mockBlocks)}
 			chainTracker, err := chaintracker.NewChainTracker(context.Background(), mockChainFetcher, chainTrackerConfig)
+			chainTracker.StartAndServe(context.Background())
 			require.NoError(t, err)
 			for _, advancement := range tt.advancements {
 				for i := 0; i < int(advancement); i++ {
@@ -302,6 +304,7 @@ func TestChainTrackerCallbacks(t *testing.T) {
 	chainTrackerConfig := chaintracker.ChainTrackerConfig{BlocksToSave: uint64(fetcherBlocks), AverageBlockTime: TimeForPollingMock, ServerBlockMemory: uint64(mockBlocks), ForkCallback: forkCallback, NewLatestCallback: newBlockCallback}
 	chainTracker, err := chaintracker.NewChainTracker(context.Background(), mockChainFetcher, chainTrackerConfig)
 	require.NoError(t, err)
+	chainTracker.StartAndServe(context.Background())
 	totalAdvancement := 0
 	t.Run("one long test", func(t *testing.T) {
 		for _, tt := range tests {
@@ -368,6 +371,7 @@ func TestChainTrackerFetchSpreadAcrossPollingTime(t *testing.T) {
 		chainTrackerConfig := chaintracker.ChainTrackerConfig{BlocksToSave: uint64(fetcherBlocks), AverageBlockTime: localTimeForPollingMock, ServerBlockMemory: uint64(mockBlocks)}
 		tracker, err := chaintracker.NewChainTracker(context.Background(), mockChainFetcher, chainTrackerConfig)
 		require.NoError(t, err)
+		tracker.StartAndServe(context.Background())
 		// fool the tracker so it thinks blocks will come every localTimeForPollingMock (ms), and not adjust it's polling timers
 		for i := 0; i < 50; i++ {
 			tracker.AddBlockGap(localTimeForPollingMock, 1)
@@ -491,6 +495,7 @@ func TestChainTrackerPollingTimeUpdate(t *testing.T) {
 			mockChainFetcher.AdvanceBlock()
 			chainTrackerConfig := chaintracker.ChainTrackerConfig{BlocksToSave: uint64(fetcherBlocks), AverageBlockTime: play.localTimeForPollingMock, ServerBlockMemory: uint64(mockBlocks)}
 			tracker, err := chaintracker.NewChainTracker(context.Background(), mockChainFetcher, chainTrackerConfig)
+			tracker.StartAndServe(context.Background())
 			tracker.RegisterForBlockTimeUpdates(&mockTimeUpdater)
 			require.NoError(t, err)
 			// initial delay
@@ -555,6 +560,7 @@ func TestChainTrackerMaintainMemory(t *testing.T) {
 	chainTrackerConfig := chaintracker.ChainTrackerConfig{BlocksToSave: uint64(fetcherBlocks), AverageBlockTime: TimeForPollingMock, ServerBlockMemory: uint64(mockBlocks), ForkCallback: forkCallback}
 	chainTracker, err := chaintracker.NewChainTracker(context.Background(), mockChainFetcher, chainTrackerConfig)
 	require.NoError(t, err)
+	chainTracker.StartAndServe(context.Background())
 	t.Run("one long test", func(t *testing.T) {
 		for _, tt := range tests {
 			utils.LavaFormatInfo(startedTestStr + tt.name)
@@ -607,6 +613,7 @@ func TestFindRequestedBlockHash(t *testing.T) {
 	chainTrackerConfig := chaintracker.ChainTrackerConfig{BlocksToSave: uint64(fetcherBlocks), AverageBlockTime: TimeForPollingMock, ServerBlockMemory: uint64(mockBlocks)}
 	chainTracker, err := chaintracker.NewChainTracker(context.Background(), mockChainFetcher, chainTrackerConfig)
 	require.NoError(t, err)
+	chainTracker.StartAndServe(context.Background())
 	latestBlock, onlyLatestBlockData, _, err := chainTracker.GetLatestBlockData(spectypes.LATEST_BLOCK, spectypes.LATEST_BLOCK, spectypes.NOT_APPLICABLE)
 	require.NoError(t, err)
 	require.Equal(t, currentLatestBlockInMock, latestBlock)

protocol/common/safe_sync_map.go

@@ -0,0 +1,51 @@
+package common
+
+import (
+	"sync"
+
+	"github.com/lavanet/lava/v3/utils"
+)
+
+type SafeSyncMap[K, V any] struct {
+	localMap sync.Map
+}
+
+func (ssm *SafeSyncMap[K, V]) Store(key K, toSet V) {
+	ssm.localMap.Store(key, toSet)
+}
+
+func (ssm *SafeSyncMap[K, V]) Load(key K) (ret V, ok bool, err error) {
+	value, ok := ssm.localMap.Load(key)
+	if !ok {
+		return ret, ok, nil
+	}
+	ret, ok = value.(V)
+	if !ok {
+		return ret, false, utils.LavaFormatError("invalid usage of syncmap, could not cast result into a PolicyUpdater", nil)
+	}
+	return ret, true, nil
+}
+
+// LoadOrStore returns the existing value for the key if present.
+// Otherwise, it stores and returns the given value.
+// The loaded result is true if the value was loaded, false if stored.
+// The function returns the value that was loaded or stored.
+func (ssm *SafeSyncMap[K, V]) LoadOrStore(key K, value V) (ret V, loaded bool, err error) {
+	actual, loaded := ssm.localMap.LoadOrStore(key, value)
+	if loaded {
+		// loaded from map
+		var ok bool
+		ret, ok = actual.(V)
+		if !ok {
+			return ret, false, utils.LavaFormatError("invalid usage of sync map, could not cast result into a PolicyUpdater", nil)
+		}
+		return ret, true, nil
+	}
+
+	// stored in map
+	return value, false, nil
+}
+
+func (ssm *SafeSyncMap[K, V]) Range(f func(key, value any) bool) {
+	ssm.localMap.Range(f)
+}

protocol/integration/protocol_test.go

@@ -293,6 +293,7 @@ func createRpcProvider(t *testing.T, ctx context.Context, consumerAddress string
 	mockChainFetcher := NewMockChainFetcher(1000, int64(blocksToSaveChainTracker), nil)
 	chainTracker, err := chaintracker.NewChainTracker(ctx, mockChainFetcher, chainTrackerConfig)
 	require.NoError(t, err)
+	chainTracker.StartAndServe(ctx)
 	reliabilityManager := reliabilitymanager.NewReliabilityManager(chainTracker, &mockProviderStateTracker, account.Addr.String(), chainRouter, chainParser)
 	mockReliabilityManager := NewMockReliabilityManager(reliabilityManager)
 	rpcProviderServer.ServeRPCRequests(ctx, rpcProviderEndpoint, chainParser, rws, providerSessionManager, mockReliabilityManager, account.SK, nil, chainRouter, &mockProviderStateTracker, account.Addr, lavaChainID, rpcprovider.DEFAULT_ALLOWED_MISSING_CU, nil, nil, nil, false)