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baseResolversContainerFactory.go
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/
baseResolversContainerFactory.go
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package resolverscontainer
import (
"fmt"
"github.com/ElrondNetwork/elrond-go/core"
"github.com/ElrondNetwork/elrond-go/core/check"
"github.com/ElrondNetwork/elrond-go/data/state"
"github.com/ElrondNetwork/elrond-go/data/typeConverters"
"github.com/ElrondNetwork/elrond-go/dataRetriever"
"github.com/ElrondNetwork/elrond-go/dataRetriever/resolvers"
"github.com/ElrondNetwork/elrond-go/dataRetriever/resolvers/topicResolverSender"
"github.com/ElrondNetwork/elrond-go/marshal"
"github.com/ElrondNetwork/elrond-go/process/factory"
"github.com/ElrondNetwork/elrond-go/sharding"
)
// EmptyExcludePeersOnTopic is an empty topic
const EmptyExcludePeersOnTopic = ""
const defaultTargetShardID = uint32(0)
//TODO extract these in config
const numCrossShardPeers = 2
const numIntraShardPeers = 1
type baseResolversContainerFactory struct {
container dataRetriever.ResolversContainer
shardCoordinator sharding.Coordinator
messenger dataRetriever.TopicMessageHandler
store dataRetriever.StorageService
marshalizer marshal.Marshalizer
dataPools dataRetriever.PoolsHolder
uint64ByteSliceConverter typeConverters.Uint64ByteSliceConverter
intRandomizer dataRetriever.IntRandomizer
dataPacker dataRetriever.DataPacker
triesContainer state.TriesHolder
inputAntifloodHandler dataRetriever.P2PAntifloodHandler
outputAntifloodHandler dataRetriever.P2PAntifloodHandler
throttler dataRetriever.ResolverThrottler
intraShardTopic string
}
func (brcf *baseResolversContainerFactory) checkParams() error {
if check.IfNil(brcf.shardCoordinator) {
return dataRetriever.ErrNilShardCoordinator
}
if check.IfNil(brcf.messenger) {
return dataRetriever.ErrNilMessenger
}
if check.IfNil(brcf.store) {
return dataRetriever.ErrNilStore
}
if check.IfNil(brcf.marshalizer) {
return dataRetriever.ErrNilMarshalizer
}
if check.IfNil(brcf.dataPools) {
return dataRetriever.ErrNilDataPoolHolder
}
if check.IfNil(brcf.uint64ByteSliceConverter) {
return dataRetriever.ErrNilUint64ByteSliceConverter
}
if check.IfNil(brcf.dataPacker) {
return dataRetriever.ErrNilDataPacker
}
if check.IfNil(brcf.triesContainer) {
return dataRetriever.ErrNilTrieDataGetter
}
if check.IfNil(brcf.inputAntifloodHandler) {
return fmt.Errorf("%w for input", dataRetriever.ErrNilAntifloodHandler)
}
if check.IfNil(brcf.outputAntifloodHandler) {
return fmt.Errorf("%w for output", dataRetriever.ErrNilAntifloodHandler)
}
if check.IfNil(brcf.throttler) {
return dataRetriever.ErrNilThrottler
}
return nil
}
func (brcf *baseResolversContainerFactory) generateTxResolvers(
topic string,
unit dataRetriever.UnitType,
dataPool dataRetriever.ShardedDataCacherNotifier,
) error {
shardC := brcf.shardCoordinator
noOfShards := shardC.NumberOfShards()
keys := make([]string, noOfShards+1)
resolverSlice := make([]dataRetriever.Resolver, noOfShards+1)
for idx := uint32(0); idx < noOfShards; idx++ {
identifierTx := topic + shardC.CommunicationIdentifier(idx)
excludePeersFromTopic := topic + shardC.CommunicationIdentifier(shardC.SelfId())
resolver, err := brcf.createTxResolver(identifierTx, excludePeersFromTopic, unit, dataPool)
if err != nil {
return err
}
resolverSlice[idx] = resolver
keys[idx] = identifierTx
}
identifierTx := topic + shardC.CommunicationIdentifier(core.MetachainShardId)
excludePeersFromTopic := topic + shardC.CommunicationIdentifier(shardC.SelfId())
resolver, err := brcf.createTxResolver(identifierTx, excludePeersFromTopic, unit, dataPool)
if err != nil {
return err
}
resolverSlice[noOfShards] = resolver
keys[noOfShards] = identifierTx
return brcf.container.AddMultiple(keys, resolverSlice)
}
func (brcf *baseResolversContainerFactory) createTxResolver(
topic string,
excludedTopic string,
unit dataRetriever.UnitType,
dataPool dataRetriever.ShardedDataCacherNotifier,
) (dataRetriever.Resolver, error) {
txStorer := brcf.store.GetStorer(unit)
resolverSender, err := brcf.createOneResolverSender(topic, excludedTopic, defaultTargetShardID)
if err != nil {
return nil, err
}
arg := resolvers.ArgTxResolver{
SenderResolver: resolverSender,
TxPool: dataPool,
TxStorage: txStorer,
Marshalizer: brcf.marshalizer,
DataPacker: brcf.dataPacker,
AntifloodHandler: brcf.inputAntifloodHandler,
Throttler: brcf.throttler,
}
resolver, err := resolvers.NewTxResolver(arg)
if err != nil {
return nil, err
}
err = brcf.messenger.RegisterMessageProcessor(resolver.RequestTopic(), resolver)
if err != nil {
return nil, err
}
return resolver, nil
}
func (brcf *baseResolversContainerFactory) generateMiniBlocksResolvers() error {
shardC := brcf.shardCoordinator
noOfShards := shardC.NumberOfShards()
keys := make([]string, noOfShards+2)
resolverSlice := make([]dataRetriever.Resolver, noOfShards+2)
for idx := uint32(0); idx < noOfShards; idx++ {
identifierMiniBlocks := factory.MiniBlocksTopic + shardC.CommunicationIdentifier(idx)
excludePeersFromTopic := factory.MiniBlocksTopic + shardC.CommunicationIdentifier(shardC.SelfId())
resolver, err := brcf.createMiniBlocksResolver(identifierMiniBlocks, excludePeersFromTopic)
if err != nil {
return err
}
resolverSlice[idx] = resolver
keys[idx] = identifierMiniBlocks
}
identifierMiniBlocks := factory.MiniBlocksTopic + shardC.CommunicationIdentifier(core.MetachainShardId)
excludePeersFromTopic := factory.MiniBlocksTopic + shardC.CommunicationIdentifier(shardC.SelfId())
resolver, err := brcf.createMiniBlocksResolver(identifierMiniBlocks, excludePeersFromTopic)
if err != nil {
return err
}
resolverSlice[noOfShards] = resolver
keys[noOfShards] = identifierMiniBlocks
identifierAllShardMiniBlocks := factory.MiniBlocksTopic + shardC.CommunicationIdentifier(core.AllShardId)
allShardMiniblocksResolver, err := brcf.createMiniBlocksResolver(identifierAllShardMiniBlocks, EmptyExcludePeersOnTopic)
if err != nil {
return err
}
resolverSlice[noOfShards+1] = allShardMiniblocksResolver
keys[noOfShards+1] = identifierAllShardMiniBlocks
return brcf.container.AddMultiple(keys, resolverSlice)
}
func (brcf *baseResolversContainerFactory) createMiniBlocksResolver(topic string, excludedTopic string) (dataRetriever.Resolver, error) {
miniBlocksStorer := brcf.store.GetStorer(dataRetriever.MiniBlockUnit)
resolverSender, err := brcf.createOneResolverSender(topic, excludedTopic, defaultTargetShardID)
if err != nil {
return nil, err
}
arg := resolvers.ArgMiniblockResolver{
SenderResolver: resolverSender,
MiniBlockPool: brcf.dataPools.MiniBlocks(),
MiniBlockStorage: miniBlocksStorer,
Marshalizer: brcf.marshalizer,
AntifloodHandler: brcf.inputAntifloodHandler,
Throttler: brcf.throttler,
DataPacker: brcf.dataPacker,
}
txBlkResolver, err := resolvers.NewMiniblockResolver(arg)
if err != nil {
return nil, err
}
err = brcf.messenger.RegisterMessageProcessor(txBlkResolver.RequestTopic(), txBlkResolver)
if err != nil {
return nil, err
}
return txBlkResolver, nil
}
func (brcf *baseResolversContainerFactory) createOneResolverSender(
topic string,
excludedTopic string,
targetShardId uint32,
) (dataRetriever.TopicResolverSender, error) {
return brcf.createOneResolverSenderWithSpecifiedNumRequests(topic, excludedTopic, targetShardId, numCrossShardPeers, numIntraShardPeers)
}
func (brcf *baseResolversContainerFactory) createOneResolverSenderWithSpecifiedNumRequests(
topic string,
excludedTopic string,
targetShardId uint32,
numCrossShard int,
numIntraShard int,
) (dataRetriever.TopicResolverSender, error) {
peerListCreator, err := topicResolverSender.NewDiffPeerListCreator(brcf.messenger, topic, brcf.intraShardTopic, excludedTopic)
if err != nil {
return nil, err
}
arg := topicResolverSender.ArgTopicResolverSender{
Messenger: brcf.messenger,
TopicName: topic,
PeerListCreator: peerListCreator,
Marshalizer: brcf.marshalizer,
Randomizer: brcf.intRandomizer,
TargetShardId: targetShardId,
OutputAntiflooder: brcf.outputAntifloodHandler,
NumCrossShardPeers: numCrossShard,
NumIntraShardPeers: numIntraShard,
}
//TODO instantiate topic sender resolver with the shard IDs for which this resolver is supposed to serve the data
// this will improve the serving of transactions as the searching will be done only on 2 sharded data units
resolverSender, err := topicResolverSender.NewTopicResolverSender(arg)
if err != nil {
return nil, err
}
return resolverSender, nil
}
func (brcf *baseResolversContainerFactory) createTrieNodesResolver(
topic string,
trieId string,
numCrossShard int,
numIntraShard int,
) (dataRetriever.Resolver, error) {
resolverSender, err := brcf.createOneResolverSenderWithSpecifiedNumRequests(
topic,
EmptyExcludePeersOnTopic,
defaultTargetShardID,
numCrossShard,
numIntraShard,
)
if err != nil {
return nil, err
}
trie := brcf.triesContainer.Get([]byte(trieId))
argTrie := resolvers.ArgTrieNodeResolver{
SenderResolver: resolverSender,
TrieDataGetter: trie,
Marshalizer: brcf.marshalizer,
AntifloodHandler: brcf.inputAntifloodHandler,
Throttler: brcf.throttler,
}
resolver, err := resolvers.NewTrieNodeResolver(argTrie)
if err != nil {
return nil, err
}
err = brcf.messenger.RegisterMessageProcessor(resolver.RequestTopic(), resolver)
if err != nil {
return nil, err
}
return resolver, nil
}