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calculate and cache script hashes statuses on wallet load to avoid unnecessary initial history fetching

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This commit is contained in:
Craig Raw 2021-05-20 09:52:02 +02:00
parent 1677c47500
commit 42bfe572ef
2 changed files with 49 additions and 4 deletions
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50
src/main/java/com/sparrowwallet/sparrow/net/ElectrumServer.java
View file

@ -17,8 +17,6 @@ import com.sparrowwallet.sparrow.wallet.SendController;
import javafx.application.Platform;
import javafx.beans.property.IntegerProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.concurrent.ScheduledService;
import javafx.concurrent.Service;
import javafx.concurrent.Task;
@ -26,6 +24,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.nio.charset.StandardCharsets;
import java.util.*;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;
@ -89,7 +88,7 @@ public class ElectrumServer {
}
//If changing server, don't rely on previous transaction history
if(!electrumServer.equals(previousServerAddress)) {
if(previousServerAddress != null && !electrumServer.equals(previousServerAddress)) {
retrievedScriptHashes.clear();
}
previousServerAddress = electrumServer;
@ -160,6 +159,51 @@ public class ElectrumServer {
}
}
public static void addCalculatedScriptHashes(Wallet wallet) {
calculateScriptHashes(wallet, KeyPurpose.RECEIVE).forEach(retrievedScriptHashes::putIfAbsent);
calculateScriptHashes(wallet, KeyPurpose.CHANGE).forEach(retrievedScriptHashes::putIfAbsent);
}
private static Map<String, String> calculateScriptHashes(Wallet wallet, KeyPurpose keyPurpose) {
Map<String, String> calculatedScriptHashes = new LinkedHashMap<>();
for(WalletNode walletNode : wallet.getNode(keyPurpose).getChildren()) {
String scriptHash = getScriptHash(wallet, walletNode);
List<BlockTransactionHashIndex> txos = new ArrayList<>(walletNode.getTransactionOutputs());
txos.addAll(walletNode.getTransactionOutputs().stream().filter(BlockTransactionHashIndex::isSpent).map(BlockTransactionHashIndex::getSpentBy).collect(Collectors.toList()));
Set<Sha256Hash> unique = new HashSet<>(txos.size());
txos.removeIf(ref -> !unique.add(ref.getHash()));
txos.sort((txo1, txo2) -> {
if(txo1.getHeight() != txo2.getHeight()) {
return txo1.getComparisonHeight() - txo2.getComparisonHeight();
}
if(txo1.isSpent() && txo1.getSpentBy().equals(txo2)) {
return -1;
}
if(txo2.isSpent() && txo2.getSpentBy().equals(txo1)) {
return 1;
}
//We cannot further sort by order within a block, so sometimes multiple txos to an address will mean an incorrect status
return 0;
});
if(!txos.isEmpty()) {
StringBuilder scriptHashStatus = new StringBuilder();
for(BlockTransactionHashIndex txo : txos) {
scriptHashStatus.append(txo.getHash().toString()).append(":").append(txo.getHeight()).append(":");
}
calculatedScriptHashes.put(scriptHash, Utils.bytesToHex(Sha256Hash.hash(scriptHashStatus.toString().getBytes(StandardCharsets.UTF_8))));
} else {
calculatedScriptHashes.put(scriptHash, null);
}
}
return calculatedScriptHashes;
}
public static void clearRetrievedScriptHashes(Wallet wallet) {
wallet.getNode(KeyPurpose.RECEIVE).getChildren().stream().map(node -> getScriptHash(wallet, node)).forEach(scriptHash -> retrievedScriptHashes.remove(scriptHash));
wallet.getNode(KeyPurpose.CHANGE).getChildren().stream().map(node -> getScriptHash(wallet, node)).forEach(scriptHash -> retrievedScriptHashes.remove(scriptHash));

3
src/main/java/com/sparrowwallet/sparrow/wallet/WalletForm.java
View file

@ -46,7 +46,8 @@ public class WalletForm {
//Unencrypted wallets load before isConnected is true, waiting for the ConnectionEvent to refresh history - save the backup for this event
savedPastWallet = backupWallet;
if(refreshHistory) {
if(refreshHistory && wallet.isValid()) {
ElectrumServer.addCalculatedScriptHashes(wallet);
refreshHistory(AppServices.getCurrentBlockHeight(), backupWallet);
}
}