import javax.annotation.Nullable;
import org.ldk.enums.Network;
+import org.ldk.enums.Recipient;
import org.ldk.structs.*;
-import org.ldk.util.TwoTuple;
import java.io.IOException;
import java.util.HashSet;
* more ChannelMonitors.
*
* Also constructs a PeerManager and spawns a background thread to monitor for and notify you of relevant Events.
+ *
+ * Note that you must ensure you hold a reference to any constructed ChannelManagerConstructor objects to ensure you
+ * continue to receive events generated by the background thread which will be stopped if this object is garbage
+ * collected.
*/
public class ChannelManagerConstructor {
/**
public final PeerManager peer_manager;
/**
* A NioPeerHandler which manages a background thread to handle socket events and pass them to the peer_manager.
+ *
+ * This is `null` until `chain_sync_completed` is called.
*/
- public final NioPeerHandler nio_peer_handler;
+ public NioPeerHandler nio_peer_handler = null;
/**
* If a `NetworkGraph` is provided to the constructor *and* a `LockableScore` is provided to
* `chain_sync_completed`, this will be non-null after `chain_sync_completed` returns.
@Nullable public InvoicePayer payer;
private final ChainMonitor chain_monitor;
- @Nullable private final NetworkGraph net_graph;
- @Nullable private final NetGraphMsgHandler graph_msg_handler;
+
+ /**
+ * The `NetworkGraph` deserialized from the byte given to the constructor when deserializing or the `NetworkGraph`
+ * given explicitly to the new-object constructor.
+ */
+ @Nullable public final NetworkGraph net_graph;
+ @Nullable private final P2PGossipSync graph_msg_handler;
private final Logger logger;
+ private final byte[] router_rand_bytes;
+
/**
* Deserializes a channel manager and a set of channel monitors from the given serialized copies and interface implementations
*
*/
public ChannelManagerConstructor(byte[] channel_manager_serialized, byte[][] channel_monitors_serialized, UserConfig config,
KeysInterface keys_interface, FeeEstimator fee_estimator, ChainMonitor chain_monitor,
- @Nullable Filter filter, @Nullable NetworkGraph net_graph,
+ @Nullable Filter filter, @Nullable byte[] net_graph_serialized,
BroadcasterInterface tx_broadcaster, Logger logger) throws InvalidSerializedDataException {
- final IgnoringMessageHandler no_custom_messages = IgnoringMessageHandler.of();
+ final IgnoringMessageHandler ignoring_handler = IgnoringMessageHandler.of();
final ChannelMonitor[] monitors = new ChannelMonitor[channel_monitors_serialized.length];
this.channel_monitors = new TwoTuple_BlockHashChannelMonitorZ[monitors.length];
HashSet<OutPoint> monitor_funding_set = new HashSet();
Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ res =
UtilMethods.C2Tuple_BlockHashChannelManagerZ_read(channel_manager_serialized, keys_interface, fee_estimator, chain_monitor.as_Watch(), tx_broadcaster,
logger, config, monitors);
- if (res instanceof Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_Err) {
+ if (!res.is_ok()) {
throw new InvalidSerializedDataException("Serialized ChannelManager was corrupt");
}
this.channel_manager = ((Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK)res).res.get_b();
this.chain_monitor = chain_monitor;
this.logger = logger;
byte[] random_data = keys_interface.get_secure_random_bytes();
- this.net_graph = net_graph;
+ if (net_graph_serialized != null) {
+ Result_NetworkGraphDecodeErrorZ graph_res = NetworkGraph.read(net_graph_serialized, logger);
+ if (!graph_res.is_ok()) {
+ throw new InvalidSerializedDataException("Serialized Network Graph was corrupt");
+ }
+ this.net_graph = ((Result_NetworkGraphDecodeErrorZ.Result_NetworkGraphDecodeErrorZ_OK)graph_res).res;
+ } else {
+ this.net_graph = null;
+ }
+ Result_SecretKeyNoneZ node_secret = keys_interface.get_node_secret(Recipient.LDKRecipient_Node);
+ assert node_secret.is_ok();
if (net_graph != null) {
//TODO: We really need to expose the Access here to let users prevent DoS issues
- this.graph_msg_handler = NetGraphMsgHandler.of(net_graph, Option_AccessZ.none(), logger);
+ this.graph_msg_handler = P2PGossipSync.of(net_graph, Option_AccessZ.none(), logger);
this.peer_manager = PeerManager.of(channel_manager.as_ChannelMessageHandler(),
graph_msg_handler.as_RoutingMessageHandler(),
- keys_interface.get_node_secret(), random_data, logger, no_custom_messages.as_CustomMessageHandler());
+ ignoring_handler.as_OnionMessageHandler(),
+ ((Result_SecretKeyNoneZ.Result_SecretKeyNoneZ_OK)node_secret).res,
+ (int)(System.currentTimeMillis() / 1000),
+ random_data, logger, ignoring_handler.as_CustomMessageHandler());
} else {
this.graph_msg_handler = null;
- this.peer_manager = PeerManager.of(channel_manager.as_ChannelMessageHandler(), no_custom_messages.as_RoutingMessageHandler(),
- keys_interface.get_node_secret(), random_data, logger, no_custom_messages.as_CustomMessageHandler());
- }
- NioPeerHandler nio_peer_handler = null;
- try {
- nio_peer_handler = new NioPeerHandler(this.peer_manager);
- } catch (IOException e) {
- throw new IllegalStateException("We should never fail to construct nio objects unless we're on a platform that cannot run LDK.");
+ this.peer_manager = PeerManager.of(channel_manager.as_ChannelMessageHandler(),
+ ignoring_handler.as_RoutingMessageHandler(),
+ ignoring_handler.as_OnionMessageHandler(),
+ ((Result_SecretKeyNoneZ.Result_SecretKeyNoneZ_OK)node_secret).res,
+ (int)(System.currentTimeMillis() / 1000),
+ random_data, logger, ignoring_handler.as_CustomMessageHandler());
}
- this.nio_peer_handler = nio_peer_handler;
if (filter != null) {
for (ChannelMonitor monitor : monitors) {
monitor.load_outputs_to_watch(filter);
}
}
+ router_rand_bytes = keys_interface.get_secure_random_bytes();
}
/**
KeysInterface keys_interface, FeeEstimator fee_estimator, ChainMonitor chain_monitor,
@Nullable NetworkGraph net_graph,
BroadcasterInterface tx_broadcaster, Logger logger) {
- final IgnoringMessageHandler no_custom_messages = IgnoringMessageHandler.of();
+ final IgnoringMessageHandler ignoring_handler = IgnoringMessageHandler.of();
channel_monitors = new TwoTuple_BlockHashChannelMonitorZ[0];
channel_manager_latest_block_hash = null;
this.chain_monitor = chain_monitor;
this.logger = logger;
byte[] random_data = keys_interface.get_secure_random_bytes();
this.net_graph = net_graph;
+ Result_SecretKeyNoneZ node_secret = keys_interface.get_node_secret(Recipient.LDKRecipient_Node);
+ assert node_secret.is_ok();
if (net_graph != null) {
//TODO: We really need to expose the Access here to let users prevent DoS issues
- this.graph_msg_handler = NetGraphMsgHandler.of(net_graph, Option_AccessZ.none(), logger);
+ this.graph_msg_handler = P2PGossipSync.of(net_graph, Option_AccessZ.none(), logger);
this.peer_manager = PeerManager.of(channel_manager.as_ChannelMessageHandler(),
graph_msg_handler.as_RoutingMessageHandler(),
- keys_interface.get_node_secret(), random_data, logger, no_custom_messages.as_CustomMessageHandler());
+ ignoring_handler.as_OnionMessageHandler(),
+ ((Result_SecretKeyNoneZ.Result_SecretKeyNoneZ_OK)node_secret).res,
+ (int)(System.currentTimeMillis() / 1000),
+ random_data, logger, ignoring_handler.as_CustomMessageHandler());
} else {
this.graph_msg_handler = null;
- this.peer_manager = PeerManager.of(channel_manager.as_ChannelMessageHandler(), no_custom_messages.as_RoutingMessageHandler(),
- keys_interface.get_node_secret(), random_data, logger, no_custom_messages.as_CustomMessageHandler());
- }
- NioPeerHandler nio_peer_handler = null;
- try {
- nio_peer_handler = new NioPeerHandler(this.peer_manager);
- } catch (IOException e) {
- throw new IllegalStateException("We should never fail to construct nio objects unless we're on a platform that cannot run LDK.");
+ this.peer_manager = PeerManager.of(channel_manager.as_ChannelMessageHandler(),
+ ignoring_handler.as_RoutingMessageHandler(),
+ ignoring_handler.as_OnionMessageHandler(),
+ ((Result_SecretKeyNoneZ.Result_SecretKeyNoneZ_OK)node_secret).res,
+ (int)(System.currentTimeMillis() / 1000),
+ random_data, logger, ignoring_handler.as_CustomMessageHandler());
}
- this.nio_peer_handler = nio_peer_handler;
+ router_rand_bytes = keys_interface.get_secure_random_bytes();
}
/**
public interface EventHandler {
void handle_event(Event events);
void persist_manager(byte[] channel_manager_bytes);
+ void persist_network_graph(byte[] network_graph);
+ void persist_scorer(byte[] scorer_bytes);
}
BackgroundProcessor background_processor = null;
* EventHandler as required.
*/
public void chain_sync_completed(EventHandler event_handler, @Nullable MultiThreadedLockableScore scorer) {
+ try {
+ this.nio_peer_handler = new NioPeerHandler(this.peer_manager);
+ } catch (IOException e) {
+ throw new IllegalStateException("We should never fail to construct nio objects unless we're on a platform that cannot run LDK.");
+ }
+
if (background_processor != null) { return; }
for (TwoTuple_BlockHashChannelMonitorZ monitor: channel_monitors) {
this.chain_monitor.as_Watch().watch_channel(monitor.get_b().get_funding_txo().get_a(), monitor.get_b());
}
org.ldk.structs.EventHandler ldk_handler = org.ldk.structs.EventHandler.new_impl(event_handler::handle_event);
if (this.net_graph != null && scorer != null) {
- Router router = DefaultRouter.of(net_graph, logger).as_Router();
- this.payer = InvoicePayer.of(this.channel_manager.as_Payer(), router, scorer, this.logger, ldk_handler, RetryAttempts.of(3));
-assert this.payer != null;
+ Router router = DefaultRouter.of(net_graph, logger, router_rand_bytes, scorer.as_LockableScore()).as_Router();
+ this.payer = InvoicePayer.of(this.channel_manager.as_Payer(), router, this.logger, ldk_handler, Retry.attempts(3));
ldk_handler = this.payer.as_EventHandler();
}
- background_processor = BackgroundProcessor.start(org.ldk.structs.ChannelManagerPersister.new_impl(channel_manager -> {
- event_handler.persist_manager(channel_manager.write());
- return Result_NoneErrorZ.ok();
- }), ldk_handler, this.chain_monitor, this.channel_manager, this.graph_msg_handler, this.peer_manager, this.logger);
+ GossipSync gossip_sync;
+ if (this.graph_msg_handler == null)
+ gossip_sync = GossipSync.none();
+ else
+ gossip_sync = GossipSync.p2_p(this.graph_msg_handler);
+
+ Option_WriteableScoreZ writeable_score;
+ if (scorer != null)
+ writeable_score = Option_WriteableScoreZ.some(scorer.as_WriteableScore());
+ else
+ writeable_score = Option_WriteableScoreZ.none();
+
+ background_processor = BackgroundProcessor.start(Persister.new_impl(new Persister.PersisterInterface() {
+ @Override
+ public Result_NoneErrorZ persist_manager(ChannelManager channel_manager) {
+ event_handler.persist_manager(channel_manager.write());
+ return Result_NoneErrorZ.ok();
+ }
+
+ @Override
+ public Result_NoneErrorZ persist_graph(NetworkGraph network_graph) {
+ event_handler.persist_network_graph(network_graph.write());
+ return Result_NoneErrorZ.ok();
+ }
+
+ @Override
+ public Result_NoneErrorZ persist_scorer(WriteableScore scorer) {
+ event_handler.persist_scorer(scorer.write());
+ return Result_NoneErrorZ.ok();
+ }
+ }), ldk_handler, this.chain_monitor, this.channel_manager, gossip_sync, this.peer_manager, this.logger, writeable_score);
}
/**
* Interrupt the background thread, stopping the background handling of events.
*/
public void interrupt() {
+ if (this.nio_peer_handler != null)
+ this.nio_peer_handler.interrupt();
this.background_processor.stop();
- this.nio_peer_handler.interrupt();
}
}