package org.ldk.structs;
import org.ldk.impl.bindings;
+import org.ldk.enums.*;
+import org.ldk.util.*;
+import java.util.Arrays;
+import java.lang.ref.Reference;
+import javax.annotation.Nullable;
+/**
+ * The `Watch` trait defines behavior for watching on-chain activity pertaining to channels as
+ * blocks are connected and disconnected.
+ *
+ * Each channel is associated with a [`ChannelMonitor`]. Implementations of this trait are
+ * responsible for maintaining a set of monitors such that they can be updated as channel state
+ * changes. On each update, *all copies* of a [`ChannelMonitor`] must be updated and the update
+ * persisted to disk to ensure that the latest [`ChannelMonitor`] state can be reloaded if the
+ * application crashes.
+ *
+ * See method documentation and [`ChannelMonitorUpdateStatus`] for specific requirements.
+ */
+@SuppressWarnings("unchecked") // We correctly assign various generic arrays
public class Watch extends CommonBase {
- Watch(Object _dummy, long ptr) { super(ptr); }
- public Watch(bindings.LDKWatch arg) {
+ final bindings.LDKWatch bindings_instance;
+ Watch(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
+ private Watch(bindings.LDKWatch arg) {
super(bindings.LDKWatch_new(arg));
this.ptrs_to.add(arg);
+ this.bindings_instance = arg;
}
@Override @SuppressWarnings("deprecation")
protected void finalize() throws Throwable {
- bindings.Watch_free(ptr); super.finalize();
+ if (ptr != 0) { bindings.Watch_free(ptr); } super.finalize();
+ }
+ /**
+ * Destroys the object, freeing associated resources. After this call, any access
+ * to this object may result in a SEGFAULT or worse.
+ *
+ * You should generally NEVER call this method. You should let the garbage collector
+ * do this for you when it finalizes objects. However, it may be useful for types
+ * which represent locks and should be closed immediately to avoid holding locks
+ * until the GC runs.
+ */
+ public void destroy() {
+ if (ptr != 0) { bindings.Watch_free(ptr); }
+ ptr = 0;
+ }
+ public static interface WatchInterface {
+ /**
+ * Watches a channel identified by `funding_txo` using `monitor`.
+ *
+ * Implementations are responsible for watching the chain for the funding transaction along
+ * with any spends of outputs returned by [`get_outputs_to_watch`]. In practice, this means
+ * calling [`block_connected`] and [`block_disconnected`] on the monitor.
+ *
+ * A return of `Err(())` indicates that the channel should immediately be force-closed without
+ * broadcasting the funding transaction.
+ *
+ * If the given `funding_txo` has previously been registered via `watch_channel`, `Err(())`
+ * must be returned.
+ *
+ * [`get_outputs_to_watch`]: channelmonitor::ChannelMonitor::get_outputs_to_watch
+ * [`block_connected`]: channelmonitor::ChannelMonitor::block_connected
+ * [`block_disconnected`]: channelmonitor::ChannelMonitor::block_disconnected
+ */
+ Result_ChannelMonitorUpdateStatusNoneZ watch_channel(OutPoint funding_txo, ChannelMonitor monitor);
+ /**
+ * Updates a channel identified by `funding_txo` by applying `update` to its monitor.
+ *
+ * Implementations must call [`ChannelMonitor::update_monitor`] with the given update. This
+ * may fail (returning an `Err(())`), in which case this should return
+ * [`ChannelMonitorUpdateStatus::InProgress`] (and the update should never complete). This
+ * generally implies the channel has been closed (either by the funding outpoint being spent
+ * on-chain or the [`ChannelMonitor`] having decided to do so and broadcasted a transaction),
+ * and the [`ChannelManager`] state will be updated once it sees the funding spend on-chain.
+ *
+ * In general, persistence failures should be retried after returning
+ * [`ChannelMonitorUpdateStatus::InProgress`] and eventually complete. If a failure truly
+ * cannot be retried, the node should shut down immediately after returning
+ * [`ChannelMonitorUpdateStatus::UnrecoverableError`], see its documentation for more info.
+ *
+ * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
+ */
+ ChannelMonitorUpdateStatus update_channel(OutPoint funding_txo, ChannelMonitorUpdate update);
+ /**
+ * Returns any monitor events since the last call. Subsequent calls must only return new
+ * events.
+ *
+ * Note that after any block- or transaction-connection calls to a [`ChannelMonitor`], no
+ * further events may be returned here until the [`ChannelMonitor`] has been fully persisted
+ * to disk.
+ *
+ * For details on asynchronous [`ChannelMonitor`] updating and returning
+ * [`MonitorEvent::Completed`] here, see [`ChannelMonitorUpdateStatus::InProgress`].
+ */
+ ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] release_pending_monitor_events();
+ }
+ private static class LDKWatchHolder { Watch held; }
+ public static Watch new_impl(WatchInterface arg) {
+ final LDKWatchHolder impl_holder = new LDKWatchHolder();
+ impl_holder.held = new Watch(new bindings.LDKWatch() {
+ @Override public long watch_channel(long funding_txo, long monitor) {
+ org.ldk.structs.OutPoint funding_txo_hu_conv = null; if (funding_txo < 0 || funding_txo > 4096) { funding_txo_hu_conv = new org.ldk.structs.OutPoint(null, funding_txo); }
+ if (funding_txo_hu_conv != null) { funding_txo_hu_conv.ptrs_to.add(this); };
+ org.ldk.structs.ChannelMonitor monitor_hu_conv = null; if (monitor < 0 || monitor > 4096) { monitor_hu_conv = new org.ldk.structs.ChannelMonitor(null, monitor); }
+ if (monitor_hu_conv != null) { monitor_hu_conv.ptrs_to.add(this); };
+ Result_ChannelMonitorUpdateStatusNoneZ ret = arg.watch_channel(funding_txo_hu_conv, monitor_hu_conv);
+ Reference.reachabilityFence(arg);
+ long result = ret == null ? 0 : ret.clone_ptr();
+ return result;
+ }
+ @Override public ChannelMonitorUpdateStatus update_channel(long funding_txo, long update) {
+ org.ldk.structs.OutPoint funding_txo_hu_conv = null; if (funding_txo < 0 || funding_txo > 4096) { funding_txo_hu_conv = new org.ldk.structs.OutPoint(null, funding_txo); }
+ if (funding_txo_hu_conv != null) { funding_txo_hu_conv.ptrs_to.add(this); };
+ org.ldk.structs.ChannelMonitorUpdate update_hu_conv = null; if (update < 0 || update > 4096) { update_hu_conv = new org.ldk.structs.ChannelMonitorUpdate(null, update); }
+ ChannelMonitorUpdateStatus ret = arg.update_channel(funding_txo_hu_conv, update_hu_conv);
+ Reference.reachabilityFence(arg);
+ return ret;
+ }
+ @Override public long[] release_pending_monitor_events() {
+ ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] ret = arg.release_pending_monitor_events();
+ Reference.reachabilityFence(arg);
+ long[] result = ret != null ? Arrays.stream(ret).mapToLong(ret_conv_49 -> ret_conv_49 == null ? 0 : ret_conv_49.clone_ptr()).toArray() : null;
+ return result;
+ }
+ });
+ return impl_holder.held;
+ }
+ /**
+ * Watches a channel identified by `funding_txo` using `monitor`.
+ *
+ * Implementations are responsible for watching the chain for the funding transaction along
+ * with any spends of outputs returned by [`get_outputs_to_watch`]. In practice, this means
+ * calling [`block_connected`] and [`block_disconnected`] on the monitor.
+ *
+ * A return of `Err(())` indicates that the channel should immediately be force-closed without
+ * broadcasting the funding transaction.
+ *
+ * If the given `funding_txo` has previously been registered via `watch_channel`, `Err(())`
+ * must be returned.
+ *
+ * [`get_outputs_to_watch`]: channelmonitor::ChannelMonitor::get_outputs_to_watch
+ * [`block_connected`]: channelmonitor::ChannelMonitor::block_connected
+ * [`block_disconnected`]: channelmonitor::ChannelMonitor::block_disconnected
+ */
+ public Result_ChannelMonitorUpdateStatusNoneZ watch_channel(org.ldk.structs.OutPoint funding_txo, org.ldk.structs.ChannelMonitor monitor) {
+ long ret = bindings.Watch_watch_channel(this.ptr, funding_txo == null ? 0 : funding_txo.ptr, monitor == null ? 0 : monitor.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(funding_txo);
+ Reference.reachabilityFence(monitor);
+ if (ret >= 0 && ret <= 4096) { return null; }
+ Result_ChannelMonitorUpdateStatusNoneZ ret_hu_conv = Result_ChannelMonitorUpdateStatusNoneZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(funding_txo); };
+ if (this != null) { this.ptrs_to.add(monitor); };
+ return ret_hu_conv;
+ }
+
+ /**
+ * Updates a channel identified by `funding_txo` by applying `update` to its monitor.
+ *
+ * Implementations must call [`ChannelMonitor::update_monitor`] with the given update. This
+ * may fail (returning an `Err(())`), in which case this should return
+ * [`ChannelMonitorUpdateStatus::InProgress`] (and the update should never complete). This
+ * generally implies the channel has been closed (either by the funding outpoint being spent
+ * on-chain or the [`ChannelMonitor`] having decided to do so and broadcasted a transaction),
+ * and the [`ChannelManager`] state will be updated once it sees the funding spend on-chain.
+ *
+ * In general, persistence failures should be retried after returning
+ * [`ChannelMonitorUpdateStatus::InProgress`] and eventually complete. If a failure truly
+ * cannot be retried, the node should shut down immediately after returning
+ * [`ChannelMonitorUpdateStatus::UnrecoverableError`], see its documentation for more info.
+ *
+ * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
+ */
+ public ChannelMonitorUpdateStatus update_channel(org.ldk.structs.OutPoint funding_txo, org.ldk.structs.ChannelMonitorUpdate update) {
+ ChannelMonitorUpdateStatus ret = bindings.Watch_update_channel(this.ptr, funding_txo == null ? 0 : funding_txo.ptr, update == null ? 0 : update.ptr);
+ Reference.reachabilityFence(this);
+ Reference.reachabilityFence(funding_txo);
+ Reference.reachabilityFence(update);
+ if (this != null) { this.ptrs_to.add(funding_txo); };
+ if (this != null) { this.ptrs_to.add(update); };
+ return ret;
+ }
+
+ /**
+ * Returns any monitor events since the last call. Subsequent calls must only return new
+ * events.
+ *
+ * Note that after any block- or transaction-connection calls to a [`ChannelMonitor`], no
+ * further events may be returned here until the [`ChannelMonitor`] has been fully persisted
+ * to disk.
+ *
+ * For details on asynchronous [`ChannelMonitor`] updating and returning
+ * [`MonitorEvent::Completed`] here, see [`ChannelMonitorUpdateStatus::InProgress`].
+ */
+ public ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] release_pending_monitor_events() {
+ long[] ret = bindings.Watch_release_pending_monitor_events(this.ptr);
+ Reference.reachabilityFence(this);
+ int ret_conv_49_len = ret.length;
+ ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] ret_conv_49_arr = new ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[ret_conv_49_len];
+ for (int x = 0; x < ret_conv_49_len; x++) {
+ long ret_conv_49 = ret[x];
+ ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ ret_conv_49_hu_conv = new ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ(null, ret_conv_49);
+ if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.add(this); };
+ ret_conv_49_arr[x] = ret_conv_49_hu_conv;
+ }
+ return ret_conv_49_arr;
}
}
projects / ldk-java / blobdiff