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add caching for verbose transaction lookups to avoid repeat server requests
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parent
be599fb003
commit
fc5d6ada36
1 changed files with 27 additions and 2 deletions
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@ -50,6 +50,8 @@ public class ElectrumServer {
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private static Map<String, String> retrievedScriptHashes = Collections.synchronizedMap(new HashMap<>());
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private static Map<String, String> retrievedScriptHashes = Collections.synchronizedMap(new HashMap<>());
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private static Map<Sha256Hash, BlockTransaction> retrievedTransactions = Collections.synchronizedMap(new HashMap<>());
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private static ElectrumServerRpc electrumServerRpc = new SimpleElectrumServerRpc();
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private static ElectrumServerRpc electrumServerRpc = new SimpleElectrumServerRpc();
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private static String bwtElectrumServer;
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private static String bwtElectrumServer;
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@ -93,6 +95,7 @@ public class ElectrumServer {
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//If changing server, don't rely on previous transaction history
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//If changing server, don't rely on previous transaction history
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if(previousServerAddress != null && !electrumServer.equals(previousServerAddress)) {
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if(previousServerAddress != null && !electrumServer.equals(previousServerAddress)) {
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retrievedScriptHashes.clear();
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retrievedScriptHashes.clear();
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retrievedTransactions.clear();
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}
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}
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previousServerAddress = electrumServer;
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previousServerAddress = electrumServer;
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@ -1229,8 +1232,30 @@ public class ElectrumServer {
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protected Task<Map<Sha256Hash, BlockTransaction>> createTask() {
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protected Task<Map<Sha256Hash, BlockTransaction>> createTask() {
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return new Task<>() {
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return new Task<>() {
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protected Map<Sha256Hash, BlockTransaction> call() throws ServerException {
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protected Map<Sha256Hash, BlockTransaction> call() throws ServerException {
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ElectrumServer electrumServer = new ElectrumServer();
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Map<Sha256Hash, BlockTransaction> transactionMap = new HashMap<>();
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return electrumServer.getReferencedTransactions(references, scriptHash);
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for(Sha256Hash ref : references) {
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if(retrievedTransactions.get(ref) != null) {
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transactionMap.put(ref, retrievedTransactions.get(ref));
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}
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}
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Set<Sha256Hash> fetchReferences = new HashSet<>(references);
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fetchReferences.removeAll(transactionMap.keySet());
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if(!fetchReferences.isEmpty()) {
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ElectrumServer electrumServer = new ElectrumServer();
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Map<Sha256Hash, BlockTransaction> fetchedTransactions = electrumServer.getReferencedTransactions(fetchReferences, scriptHash);
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transactionMap.putAll(fetchedTransactions);
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for(Map.Entry<Sha256Hash, BlockTransaction> fetchedEntry : fetchedTransactions.entrySet()) {
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if(fetchedEntry.getValue() != null && !Sha256Hash.ZERO_HASH.equals(fetchedEntry.getValue().getBlockHash()) &&
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AppServices.getCurrentBlockHeight() != null && fetchedEntry.getValue().getConfirmations(AppServices.getCurrentBlockHeight()) >= BlockTransactionHash.BLOCKS_TO_CONFIRM) {
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retrievedTransactions.put(fetchedEntry.getKey(), fetchedEntry.getValue());
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}
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}
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}
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return transactionMap;
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}
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}
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};
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};
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}
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}
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