Craig Raw
5 years ago
7 changed files with 247 additions and 19 deletions
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package com.sparrowwallet.sparrow.net; |
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import com.fasterxml.jackson.databind.exc.MismatchedInputException; |
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import com.github.arteam.simplejsonrpc.client.JsonRpcClient; |
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import com.github.arteam.simplejsonrpc.client.Transport; |
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import com.github.arteam.simplejsonrpc.client.exception.JsonRpcException; |
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import com.sparrowwallet.drongo.protocol.Sha256Hash; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import java.util.LinkedHashMap; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Set; |
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import static com.sparrowwallet.drongo.protocol.Transaction.DUST_RELAY_TX_FEE; |
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public class SimpleElectrumServerRpc implements ElectrumServerRpc { |
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private static final Logger log = LoggerFactory.getLogger(SimpleElectrumServerRpc.class); |
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@Override |
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public void ping(Transport transport) { |
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try { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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client.createRequest().method("server.ping").id(1).executeNullable(); |
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} catch(JsonRpcException | IllegalStateException | IllegalArgumentException e) { |
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throw new ElectrumServerRpcException("Error pinging server", e); |
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} |
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} |
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@Override |
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public List<String> getServerVersion(Transport transport, String clientName, String[] supportedVersions) { |
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try { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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//Using 1.4 as the version number as EPS tries to parse this number to a float
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return client.createRequest().returnAsList(String.class).method("server.version").id(1).params(clientName, "1.4").execute(); |
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} catch(JsonRpcException | IllegalStateException | IllegalArgumentException e) { |
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throw new ElectrumServerRpcException("Error getting server version", e); |
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} |
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} |
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@Override |
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public String getServerBanner(Transport transport) { |
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try { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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return client.createRequest().returnAs(String.class).method("server.banner").id(1).execute(); |
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} catch(JsonRpcException | IllegalStateException | IllegalArgumentException e) { |
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throw new ElectrumServerRpcException("Error getting server banner", e); |
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} |
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} |
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@Override |
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public BlockHeaderTip subscribeBlockHeaders(Transport transport) { |
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try { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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return client.createRequest().returnAs(BlockHeaderTip.class).method("blockchain.headers.subscribe").id(1).execute(); |
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} catch(JsonRpcException | IllegalStateException | IllegalArgumentException e) { |
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throw new ElectrumServerRpcException("Error subscribing to block headers", e); |
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} |
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} |
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@Override |
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public Map<String, ScriptHashTx[]> getScriptHashHistory(Transport transport, Map<String, String> pathScriptHashes, boolean failOnError) { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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Map<String, ScriptHashTx[]> result = new LinkedHashMap<>(); |
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for(String path : pathScriptHashes.keySet()) { |
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try { |
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ScriptHashTx[] scriptHashTxes = client.createRequest().returnAs(ScriptHashTx[].class).method("blockchain.scripthash.get_history").id(path).params(pathScriptHashes.get(path)).execute(); |
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result.put(path, scriptHashTxes); |
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} catch(JsonRpcException | IllegalStateException | IllegalArgumentException e) { |
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if(failOnError) { |
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throw new ElectrumServerRpcException("Failed to retrieve reference for path: " + path, e); |
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} |
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result.put(path, new ScriptHashTx[] {ScriptHashTx.ERROR_TX}); |
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} |
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} |
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return result; |
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} |
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@Override |
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public Map<String, ScriptHashTx[]> getScriptHashMempool(Transport transport, Map<String, String> pathScriptHashes, boolean failOnError) { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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Map<String, ScriptHashTx[]> result = new LinkedHashMap<>(); |
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for(String path : pathScriptHashes.keySet()) { |
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try { |
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ScriptHashTx[] scriptHashTxes = client.createRequest().returnAs(ScriptHashTx[].class).method("blockchain.scripthash.get_mempool").id(path).params(pathScriptHashes.get(path)).execute(); |
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result.put(path, scriptHashTxes); |
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} catch(JsonRpcException | IllegalStateException | IllegalArgumentException e) { |
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if(failOnError) { |
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throw new ElectrumServerRpcException("Failed to retrieve reference for path: " + path, e); |
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} |
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result.put(path, new ScriptHashTx[] {ScriptHashTx.ERROR_TX}); |
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} |
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} |
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return result; |
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} |
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@Override |
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public Map<String, String> subscribeScriptHashes(Transport transport, Map<String, String> pathScriptHashes) { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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Map<String, String> result = new LinkedHashMap<>(); |
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for(String path : pathScriptHashes.keySet()) { |
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try { |
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client.createRequest().method("blockchain.scripthash.subscribe").id(path).params(pathScriptHashes.get(path)).executeNullable(); |
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result.put(path, ""); |
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} catch(JsonRpcException | IllegalStateException | IllegalArgumentException e) { |
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//Even if we have some successes, failure to subscribe for all script hashes will result in outdated wallet view. Don't proceed.
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throw new ElectrumServerRpcException("Failed to retrieve reference for path: " + path, e); |
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} |
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} |
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return result; |
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} |
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@Override |
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public Map<Integer, String> getBlockHeaders(Transport transport, Set<Integer> blockHeights) { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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Map<Integer, String> result = new LinkedHashMap<>(); |
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for(Integer blockHeight : blockHeights) { |
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try { |
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String blockHeader = client.createRequest().returnAs(String.class).method("blockchain.block.header").id(blockHeight).params(blockHeight).execute(); |
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result.put(blockHeight, blockHeader); |
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} catch(IllegalStateException | IllegalArgumentException e) { |
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log.warn("Failed to retrieve block header for block height: " + blockHeight + " (" + e.getMessage() + ")"); |
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} catch(JsonRpcException e) { |
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log.warn("Failed to retrieve block header for block height: " + blockHeight + " (" + e.getErrorMessage() + ")"); |
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} |
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} |
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return result; |
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} |
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@Override |
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public Map<String, String> getTransactions(Transport transport, Set<String> txids) { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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Map<String, String> result = new LinkedHashMap<>(); |
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for(String txid : txids) { |
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try { |
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String rawTxHex = client.createRequest().returnAs(String.class).method("blockchain.transaction.get").id(txid).params(txid).execute(); |
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result.put(txid, rawTxHex); |
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} catch(JsonRpcException | IllegalStateException | IllegalArgumentException e) { |
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result.put(txid, Sha256Hash.ZERO_HASH.toString()); |
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} |
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} |
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return result; |
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} |
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@Override |
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public Map<String, VerboseTransaction> getVerboseTransactions(Transport transport, Set<String> txids) { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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Map<String, VerboseTransaction> result = new LinkedHashMap<>(); |
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for(String txid : txids) { |
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try { |
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VerboseTransaction verboseTransaction = client.createRequest().returnAs(VerboseTransaction.class).method("blockchain.transaction.get").id(txid).params(txid, true).execute(); |
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result.put(txid, verboseTransaction); |
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} catch(IllegalStateException | IllegalArgumentException e) { |
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log.warn("Error retrieving transaction: " + txid + " (" + (e.getCause() != null ? e.getCause().getMessage() : e.getMessage()) + ")"); |
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} catch(JsonRpcException e) { |
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log.warn("Error retrieving transaction: " + txid + " (" + e.getErrorMessage() + ")"); |
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} |
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} |
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return result; |
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} |
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@Override |
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public Map<Integer, Double> getFeeEstimates(Transport transport, List<Integer> targetBlocks) { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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Map<Integer, Double> result = new LinkedHashMap<>(); |
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for(Integer targetBlock : targetBlocks) { |
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try { |
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Double targetBlocksFeeRateBtcKb = client.createRequest().returnAs(Double.class).method("blockchain.estimatefee").id(targetBlock).params(targetBlock).execute(); |
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result.put(targetBlock, targetBlocksFeeRateBtcKb); |
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} catch(IllegalStateException | IllegalArgumentException e) { |
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log.warn("Failed to retrieve fee rate for target blocks: " + targetBlock + " (" + e.getMessage() + ")"); |
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result.put(targetBlock, DUST_RELAY_TX_FEE); |
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} catch(JsonRpcException e) { |
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throw new ElectrumServerRpcException("Failed to retrieve fee rate for target blocks: " + targetBlock, e); |
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} |
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} |
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return result; |
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} |
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@Override |
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public String broadcastTransaction(Transport transport, String txHex) { |
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try { |
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JsonRpcClient client = new JsonRpcClient(transport); |
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return client.createRequest().returnAs(String.class).method("blockchain.transaction.broadcast").id(1).params(txHex).execute(); |
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} catch(IllegalStateException | IllegalArgumentException e) { |
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throw new ElectrumServerRpcException(e.getMessage(), e); |
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} catch(JsonRpcException e) { |
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throw new ElectrumServerRpcException(e.getErrorMessage().getMessage(), e); |
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} |
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} |
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} |
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