_ Git - ldk-java/blob - src/main/java/org/ldk/structs/ChannelMonitor.java

   1 package org.ldk.structs;
   2
   3 import org.ldk.impl.bindings;
   4 import org.ldk.enums.*;
   5 import org.ldk.util.*;
   6 import java.util.Arrays;
   7 import java.lang.ref.Reference;
   8 import javax.annotation.Nullable;
   9
  10
  11 /**
  12  * A ChannelMonitor handles chain events (blocks connected and disconnected) and generates
  13  * on-chain transactions to ensure no loss of funds occurs.
  14  *
  15  * You MUST ensure that no ChannelMonitors for a given channel anywhere contain out-of-date
  16  * information and are actively monitoring the chain.
  17  *
  18  * Note that the deserializer is only implemented for (BlockHash, ChannelMonitor), which
  19  * tells you the last block hash which was block_connect()ed. You MUST rescan any blocks along
  20  * the \"reorg path\" (ie disconnecting blocks until you find a common ancestor from both the
  21  * returned block hash and the the current chain and then reconnecting blocks to get to the
  22  * best chain) upon deserializing the object!
  23  */
  24 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  25 public class ChannelMonitor extends CommonBase {
  26         ChannelMonitor(Object _dummy, long ptr) { super(ptr); }
  27         @Override @SuppressWarnings("deprecation")
  28         protected void finalize() throws Throwable {
  29                 super.finalize();
  30                 if (ptr != 0) { bindings.ChannelMonitor_free(ptr); }
  31         }
  32
  33         long clone_ptr() {
  34                 long ret = bindings.ChannelMonitor_clone_ptr(this.ptr);
  35                 Reference.reachabilityFence(this);
  36                 return ret;
  37         }
  38
  39         /**
  40          * Creates a copy of the ChannelMonitor
  41          */
  42         public ChannelMonitor clone() {
  43                 long ret = bindings.ChannelMonitor_clone(this.ptr);
  44                 Reference.reachabilityFence(this);
  45                 if (ret >= 0 && ret <= 4096) { return null; }
  46                 org.ldk.structs.ChannelMonitor ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.ChannelMonitor(null, ret); }
  47                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
  48                 return ret_hu_conv;
  49         }
  50
  51         /**
  52          * Serialize the ChannelMonitor object into a byte array which can be read by ChannelMonitor_read
  53          */
  54         public byte[] write() {
  55                 byte[] ret = bindings.ChannelMonitor_write(this.ptr);
  56                 Reference.reachabilityFence(this);
  57                 return ret;
  58         }
  59
  60         /**
  61          * Updates a ChannelMonitor on the basis of some new information provided by the Channel
  62          * itself.
  63          *
  64          * panics if the given update is not the next update by update_id.
  65          */
  66         public Result_NoneNoneZ update_monitor(org.ldk.structs.ChannelMonitorUpdate updates, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
  67                 long ret = bindings.ChannelMonitor_update_monitor(this.ptr, updates == null ? 0 : updates.ptr, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
  68                 Reference.reachabilityFence(this);
  69                 Reference.reachabilityFence(updates);
  70                 Reference.reachabilityFence(broadcaster);
  71                 Reference.reachabilityFence(fee_estimator);
  72                 Reference.reachabilityFence(logger);
  73                 if (ret >= 0 && ret <= 4096) { return null; }
  74                 Result_NoneNoneZ ret_hu_conv = Result_NoneNoneZ.constr_from_ptr(ret);
  75                 if (this != null) { this.ptrs_to.add(updates); };
  76                 if (this != null) { this.ptrs_to.add(broadcaster); };
  77                 if (this != null) { this.ptrs_to.add(fee_estimator); };
  78                 if (this != null) { this.ptrs_to.add(logger); };
  79                 return ret_hu_conv;
  80         }
  81
  82         /**
  83          * Gets the update_id from the latest ChannelMonitorUpdate which was applied to this
  84          * ChannelMonitor.
  85          */
  86         public long get_latest_update_id() {
  87                 long ret = bindings.ChannelMonitor_get_latest_update_id(this.ptr);
  88                 Reference.reachabilityFence(this);
  89                 return ret;
  90         }
  91
  92         /**
  93          * Gets the funding transaction outpoint of the channel this ChannelMonitor is monitoring for.
  94          */
  95         public TwoTuple_OutPointCVec_u8ZZ get_funding_txo() {
  96                 long ret = bindings.ChannelMonitor_get_funding_txo(this.ptr);
  97                 Reference.reachabilityFence(this);
  98                 if (ret >= 0 && ret <= 4096) { return null; }
  99                 TwoTuple_OutPointCVec_u8ZZ ret_hu_conv = new TwoTuple_OutPointCVec_u8ZZ(null, ret);
 100                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
 101                 return ret_hu_conv;
 102         }
 103
 104         /**
 105          * Gets a list of txids, with their output scripts (in the order they appear in the
 106          * transaction), which we must learn about spends of via block_connected().
 107          */
 108         public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ[] get_outputs_to_watch() {
 109                 long[] ret = bindings.ChannelMonitor_get_outputs_to_watch(this.ptr);
 110                 Reference.reachabilityFence(this);
 111                 int ret_conv_52_len = ret.length;
 112                 TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ[] ret_conv_52_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ[ret_conv_52_len];
 113                 for (int a = 0; a < ret_conv_52_len; a++) {
 114                         long ret_conv_52 = ret[a];
 115                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ ret_conv_52_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ(null, ret_conv_52);
 116                         if (ret_conv_52_hu_conv != null) { ret_conv_52_hu_conv.ptrs_to.add(this); };
 117                         ret_conv_52_arr[a] = ret_conv_52_hu_conv;
 118                 }
 119                 return ret_conv_52_arr;
 120         }
 121
 122         /**
 123          * Loads the funding txo and outputs to watch into the given `chain::Filter` by repeatedly
 124          * calling `chain::Filter::register_output` and `chain::Filter::register_tx` until all outputs
 125          * have been registered.
 126          */
 127         public void load_outputs_to_watch(org.ldk.structs.Filter filter, org.ldk.structs.Logger logger) {
 128                 bindings.ChannelMonitor_load_outputs_to_watch(this.ptr, filter.ptr, logger.ptr);
 129                 Reference.reachabilityFence(this);
 130                 Reference.reachabilityFence(filter);
 131                 Reference.reachabilityFence(logger);
 132                 if (this != null) { this.ptrs_to.add(filter); };
 133                 if (this != null) { this.ptrs_to.add(logger); };
 134         }
 135
 136         /**
 137          * Get the list of HTLCs who's status has been updated on chain. This should be called by
 138          * ChannelManager via [`chain::Watch::release_pending_monitor_events`].
 139          */
 140         public MonitorEvent[] get_and_clear_pending_monitor_events() {
 141                 long[] ret = bindings.ChannelMonitor_get_and_clear_pending_monitor_events(this.ptr);
 142                 Reference.reachabilityFence(this);
 143                 int ret_conv_14_len = ret.length;
 144                 MonitorEvent[] ret_conv_14_arr = new MonitorEvent[ret_conv_14_len];
 145                 for (int o = 0; o < ret_conv_14_len; o++) {
 146                         long ret_conv_14 = ret[o];
 147                         org.ldk.structs.MonitorEvent ret_conv_14_hu_conv = org.ldk.structs.MonitorEvent.constr_from_ptr(ret_conv_14);
 148                         if (ret_conv_14_hu_conv != null) { ret_conv_14_hu_conv.ptrs_to.add(this); };
 149                         ret_conv_14_arr[o] = ret_conv_14_hu_conv;
 150                 }
 151                 return ret_conv_14_arr;
 152         }
 153
 154         /**
 155          * Processes [`SpendableOutputs`] events produced from each [`ChannelMonitor`] upon maturity.
 156          *
 157          * For channels featuring anchor outputs, this method will also process [`BumpTransaction`]
 158          * events produced from each [`ChannelMonitor`] while there is a balance to claim onchain
 159          * within each channel. As the confirmation of a commitment transaction may be critical to the
 160          * safety of funds, we recommend invoking this every 30 seconds, or lower if running in an
 161          * environment with spotty connections, like on mobile.
 162          *
 163          * An [`EventHandler`] may safely call back to the provider, though this shouldn't be needed in
 164          * order to handle these events.
 165          *
 166          * [`SpendableOutputs`]: crate::events::Event::SpendableOutputs
 167          * [`BumpTransaction`]: crate::events::Event::BumpTransaction
 168          */
 169         public void process_pending_events(org.ldk.structs.EventHandler handler) {
 170                 bindings.ChannelMonitor_process_pending_events(this.ptr, handler.ptr);
 171                 Reference.reachabilityFence(this);
 172                 Reference.reachabilityFence(handler);
 173                 if (this != null) { this.ptrs_to.add(handler); };
 174         }
 175
 176         /**
 177          * Gets the counterparty's initial commitment transaction. The returned commitment
 178          * transaction is unsigned. This is intended to be called during the initial persistence of
 179          * the monitor (inside an implementation of [`Persist::persist_new_channel`]), to allow for
 180          * watchtowers in the persistence pipeline to have enough data to form justice transactions.
 181          *
 182          * This is similar to [`Self::counterparty_commitment_txs_from_update`], except
 183          * that for the initial commitment transaction, we don't have a corresponding update.
 184          *
 185          * This will only return `Some` for channel monitors that have been created after upgrading
 186          * to LDK 0.0.117+.
 187          *
 188          * [`Persist::persist_new_channel`]: crate::chain::chainmonitor::Persist::persist_new_channel
 189          *
 190          * Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
 191          */
 192         @Nullable
 193         public CommitmentTransaction initial_counterparty_commitment_tx() {
 194                 long ret = bindings.ChannelMonitor_initial_counterparty_commitment_tx(this.ptr);
 195                 Reference.reachabilityFence(this);
 196                 if (ret >= 0 && ret <= 4096) { return null; }
 197                 org.ldk.structs.CommitmentTransaction ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.CommitmentTransaction(null, ret); }
 198                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
 199                 return ret_hu_conv;
 200         }
 201
 202         /**
 203          * Gets all of the counterparty commitment transactions provided by the given update. This
 204          * may be empty if the update doesn't include any new counterparty commitments. Returned
 205          * commitment transactions are unsigned.
 206          *
 207          * This is provided so that watchtower clients in the persistence pipeline are able to build
 208          * justice transactions for each counterparty commitment upon each update. It's intended to be
 209          * used within an implementation of [`Persist::update_persisted_channel`], which is provided
 210          * with a monitor and an update. Once revoked, signing a justice transaction can be done using
 211          * [`Self::sign_to_local_justice_tx`].
 212          *
 213          * It is expected that a watchtower client may use this method to retrieve the latest counterparty
 214          * commitment transaction(s), and then hold the necessary data until a later update in which
 215          * the monitor has been updated with the corresponding revocation data, at which point the
 216          * monitor can sign the justice transaction.
 217          *
 218          * This will only return a non-empty list for monitor updates that have been created after
 219          * upgrading to LDK 0.0.117+. Note that no restriction lies on the monitors themselves, which
 220          * may have been created prior to upgrading.
 221          *
 222          * [`Persist::update_persisted_channel`]: crate::chain::chainmonitor::Persist::update_persisted_channel
 223          */
 224         public CommitmentTransaction[] counterparty_commitment_txs_from_update(org.ldk.structs.ChannelMonitorUpdate update) {
 225                 long[] ret = bindings.ChannelMonitor_counterparty_commitment_txs_from_update(this.ptr, update == null ? 0 : update.ptr);
 226                 Reference.reachabilityFence(this);
 227                 Reference.reachabilityFence(update);
 228                 int ret_conv_23_len = ret.length;
 229                 CommitmentTransaction[] ret_conv_23_arr = new CommitmentTransaction[ret_conv_23_len];
 230                 for (int x = 0; x < ret_conv_23_len; x++) {
 231                         long ret_conv_23 = ret[x];
 232                         org.ldk.structs.CommitmentTransaction ret_conv_23_hu_conv = null; if (ret_conv_23 < 0 || ret_conv_23 > 4096) { ret_conv_23_hu_conv = new org.ldk.structs.CommitmentTransaction(null, ret_conv_23); }
 233                         if (ret_conv_23_hu_conv != null) { ret_conv_23_hu_conv.ptrs_to.add(this); };
 234                         ret_conv_23_arr[x] = ret_conv_23_hu_conv;
 235                 }
 236                 if (this != null) { this.ptrs_to.add(update); };
 237                 return ret_conv_23_arr;
 238         }
 239
 240         /**
 241          * Wrapper around [`EcdsaChannelSigner::sign_justice_revoked_output`] to make
 242          * signing the justice transaction easier for implementors of
 243          * [`chain::chainmonitor::Persist`]. On success this method returns the provided transaction
 244          * signing the input at `input_idx`. This method will only produce a valid signature for
 245          * a transaction spending the `to_local` output of a commitment transaction, i.e. this cannot
 246          * be used for revoked HTLC outputs.
 247          *
 248          * `Value` is the value of the output being spent by the input at `input_idx`, committed
 249          * in the BIP 143 signature.
 250          *
 251          * This method will only succeed if this monitor has received the revocation secret for the
 252          * provided `commitment_number`. If a commitment number is provided that does not correspond
 253          * to the commitment transaction being revoked, this will return a signed transaction, but
 254          * the signature will not be valid.
 255          *
 256          * [`EcdsaChannelSigner::sign_justice_revoked_output`]: crate::sign::ecdsa::EcdsaChannelSigner::sign_justice_revoked_output
 257          * [`Persist`]: crate::chain::chainmonitor::Persist
 258          */
 259         public Result_TransactionNoneZ sign_to_local_justice_tx(byte[] justice_tx, long input_idx, long value, long commitment_number) {
 260                 long ret = bindings.ChannelMonitor_sign_to_local_justice_tx(this.ptr, justice_tx, input_idx, value, commitment_number);
 261                 Reference.reachabilityFence(this);
 262                 Reference.reachabilityFence(justice_tx);
 263                 Reference.reachabilityFence(input_idx);
 264                 Reference.reachabilityFence(value);
 265                 Reference.reachabilityFence(commitment_number);
 266                 if (ret >= 0 && ret <= 4096) { return null; }
 267                 Result_TransactionNoneZ ret_hu_conv = Result_TransactionNoneZ.constr_from_ptr(ret);
 268                 return ret_hu_conv;
 269         }
 270
 271         /**
 272          * Gets the `node_id` of the counterparty for this channel.
 273          *
 274          * Will be `None` for channels constructed on LDK versions prior to 0.0.110 and always `Some`
 275          * otherwise.
 276          *
 277          * Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
 278          */
 279         @Nullable
 280         public byte[] get_counterparty_node_id() {
 281                 byte[] ret = bindings.ChannelMonitor_get_counterparty_node_id(this.ptr);
 282                 Reference.reachabilityFence(this);
 283                 return ret;
 284         }
 285
 286         /**
 287          * Used by [`ChannelManager`] deserialization to broadcast the latest holder state if its copy
 288          * of the channel state was out-of-date.
 289          *
 290          * You may also use this to broadcast the latest local commitment transaction, either because
 291          * a monitor update failed or because we've fallen behind (i.e. we've received proof that our
 292          * counterparty side knows a revocation secret we gave them that they shouldn't know).
 293          *
 294          * Broadcasting these transactions in the second case is UNSAFE, as they allow counterparty
 295          * side to punish you. Nevertheless you may want to broadcast them if counterparty doesn't
 296          * close channel with their commitment transaction after a substantial amount of time. Best
 297          * may be to contact the other node operator out-of-band to coordinate other options available
 298          * to you.
 299          *
 300          * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
 301          */
 302         public byte[][] get_latest_holder_commitment_txn(org.ldk.structs.Logger logger) {
 303                 byte[][] ret = bindings.ChannelMonitor_get_latest_holder_commitment_txn(this.ptr, logger.ptr);
 304                 Reference.reachabilityFence(this);
 305                 Reference.reachabilityFence(logger);
 306                 if (this != null) { this.ptrs_to.add(logger); };
 307                 return ret;
 308         }
 309
 310         /**
 311          * Processes transactions in a newly connected block, which may result in any of the following:
 312          * - update the monitor's state against resolved HTLCs
 313          * - punish the counterparty in the case of seeing a revoked commitment transaction
 314          * - force close the channel and claim/timeout incoming/outgoing HTLCs if near expiration
 315          * - detect settled outputs for later spending
 316          * - schedule and bump any in-flight claims
 317          *
 318          * Returns any new outputs to watch from `txdata`; after called, these are also included in
 319          * [`get_outputs_to_watch`].
 320          *
 321          * [`get_outputs_to_watch`]: #method.get_outputs_to_watch
 322          */
 323         public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] block_connected(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 324                 long[] ret = bindings.ChannelMonitor_block_connected(this.ptr, InternalUtils.check_arr_len(header, 80), txdata != null ? Arrays.stream(txdata).mapToLong(txdata_conv_28 -> txdata_conv_28 != null ? txdata_conv_28.ptr : 0).toArray() : null, height, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 325                 Reference.reachabilityFence(this);
 326                 Reference.reachabilityFence(header);
 327                 Reference.reachabilityFence(txdata);
 328                 Reference.reachabilityFence(height);
 329                 Reference.reachabilityFence(broadcaster);
 330                 Reference.reachabilityFence(fee_estimator);
 331                 Reference.reachabilityFence(logger);
 332                 int ret_conv_49_len = ret.length;
 333                 TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[ret_conv_49_len];
 334                 for (int x = 0; x < ret_conv_49_len; x++) {
 335                         long ret_conv_49 = ret[x];
 336                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_49);
 337                         if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.add(this); };
 338                         ret_conv_49_arr[x] = ret_conv_49_hu_conv;
 339                 }
 340                 if (this != null) { this.ptrs_to.add(broadcaster); };
 341                 if (this != null) { this.ptrs_to.add(fee_estimator); };
 342                 if (this != null) { this.ptrs_to.add(logger); };
 343                 return ret_conv_49_arr;
 344         }
 345
 346         /**
 347          * Determines if the disconnected block contained any transactions of interest and updates
 348          * appropriately.
 349          */
 350         public void block_disconnected(byte[] header, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 351                 bindings.ChannelMonitor_block_disconnected(this.ptr, InternalUtils.check_arr_len(header, 80), height, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 352                 Reference.reachabilityFence(this);
 353                 Reference.reachabilityFence(header);
 354                 Reference.reachabilityFence(height);
 355                 Reference.reachabilityFence(broadcaster);
 356                 Reference.reachabilityFence(fee_estimator);
 357                 Reference.reachabilityFence(logger);
 358                 if (this != null) { this.ptrs_to.add(broadcaster); };
 359                 if (this != null) { this.ptrs_to.add(fee_estimator); };
 360                 if (this != null) { this.ptrs_to.add(logger); };
 361         }
 362
 363         /**
 364          * Processes transactions confirmed in a block with the given header and height, returning new
 365          * outputs to watch. See [`block_connected`] for details.
 366          *
 367          * Used instead of [`block_connected`] by clients that are notified of transactions rather than
 368          * blocks. See [`chain::Confirm`] for calling expectations.
 369          *
 370          * [`block_connected`]: Self::block_connected
 371          */
 372         public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] transactions_confirmed(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 373                 long[] ret = bindings.ChannelMonitor_transactions_confirmed(this.ptr, InternalUtils.check_arr_len(header, 80), txdata != null ? Arrays.stream(txdata).mapToLong(txdata_conv_28 -> txdata_conv_28 != null ? txdata_conv_28.ptr : 0).toArray() : null, height, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 374                 Reference.reachabilityFence(this);
 375                 Reference.reachabilityFence(header);
 376                 Reference.reachabilityFence(txdata);
 377                 Reference.reachabilityFence(height);
 378                 Reference.reachabilityFence(broadcaster);
 379                 Reference.reachabilityFence(fee_estimator);
 380                 Reference.reachabilityFence(logger);
 381                 int ret_conv_49_len = ret.length;
 382                 TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[ret_conv_49_len];
 383                 for (int x = 0; x < ret_conv_49_len; x++) {
 384                         long ret_conv_49 = ret[x];
 385                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_49);
 386                         if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.add(this); };
 387                         ret_conv_49_arr[x] = ret_conv_49_hu_conv;
 388                 }
 389                 if (this != null) { this.ptrs_to.add(broadcaster); };
 390                 if (this != null) { this.ptrs_to.add(fee_estimator); };
 391                 if (this != null) { this.ptrs_to.add(logger); };
 392                 return ret_conv_49_arr;
 393         }
 394
 395         /**
 396          * Processes a transaction that was reorganized out of the chain.
 397          *
 398          * Used instead of [`block_disconnected`] by clients that are notified of transactions rather
 399          * than blocks. See [`chain::Confirm`] for calling expectations.
 400          *
 401          * [`block_disconnected`]: Self::block_disconnected
 402          */
 403         public void transaction_unconfirmed(byte[] txid, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 404                 bindings.ChannelMonitor_transaction_unconfirmed(this.ptr, InternalUtils.check_arr_len(txid, 32), broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 405                 Reference.reachabilityFence(this);
 406                 Reference.reachabilityFence(txid);
 407                 Reference.reachabilityFence(broadcaster);
 408                 Reference.reachabilityFence(fee_estimator);
 409                 Reference.reachabilityFence(logger);
 410                 if (this != null) { this.ptrs_to.add(broadcaster); };
 411                 if (this != null) { this.ptrs_to.add(fee_estimator); };
 412                 if (this != null) { this.ptrs_to.add(logger); };
 413         }
 414
 415         /**
 416          * Updates the monitor with the current best chain tip, returning new outputs to watch. See
 417          * [`block_connected`] for details.
 418          *
 419          * Used instead of [`block_connected`] by clients that are notified of transactions rather than
 420          * blocks. See [`chain::Confirm`] for calling expectations.
 421          *
 422          * [`block_connected`]: Self::block_connected
 423          */
 424         public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] best_block_updated(byte[] header, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 425                 long[] ret = bindings.ChannelMonitor_best_block_updated(this.ptr, InternalUtils.check_arr_len(header, 80), height, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 426                 Reference.reachabilityFence(this);
 427                 Reference.reachabilityFence(header);
 428                 Reference.reachabilityFence(height);
 429                 Reference.reachabilityFence(broadcaster);
 430                 Reference.reachabilityFence(fee_estimator);
 431                 Reference.reachabilityFence(logger);
 432                 int ret_conv_49_len = ret.length;
 433                 TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[ret_conv_49_len];
 434                 for (int x = 0; x < ret_conv_49_len; x++) {
 435                         long ret_conv_49 = ret[x];
 436                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_49);
 437                         if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.add(this); };
 438                         ret_conv_49_arr[x] = ret_conv_49_hu_conv;
 439                 }
 440                 if (this != null) { this.ptrs_to.add(broadcaster); };
 441                 if (this != null) { this.ptrs_to.add(fee_estimator); };
 442                 if (this != null) { this.ptrs_to.add(logger); };
 443                 return ret_conv_49_arr;
 444         }
 445
 446         /**
 447          * Returns the set of txids that should be monitored for re-organization out of the chain.
 448          */
 449         public ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ[] get_relevant_txids() {
 450                 long[] ret = bindings.ChannelMonitor_get_relevant_txids(this.ptr);
 451                 Reference.reachabilityFence(this);
 452                 int ret_conv_54_len = ret.length;
 453                 ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ[] ret_conv_54_arr = new ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ[ret_conv_54_len];
 454                 for (int c = 0; c < ret_conv_54_len; c++) {
 455                         long ret_conv_54 = ret[c];
 456                         ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ ret_conv_54_hu_conv = new ThreeTuple_ThirtyTwoBytesu32COption_ThirtyTwoBytesZZ(null, ret_conv_54);
 457                         if (ret_conv_54_hu_conv != null) { ret_conv_54_hu_conv.ptrs_to.add(this); };
 458                         ret_conv_54_arr[c] = ret_conv_54_hu_conv;
 459                 }
 460                 return ret_conv_54_arr;
 461         }
 462
 463         /**
 464          * Gets the latest best block which was connected either via the [`chain::Listen`] or
 465          * [`chain::Confirm`] interfaces.
 466          */
 467         public BestBlock current_best_block() {
 468                 long ret = bindings.ChannelMonitor_current_best_block(this.ptr);
 469                 Reference.reachabilityFence(this);
 470                 if (ret >= 0 && ret <= 4096) { return null; }
 471                 org.ldk.structs.BestBlock ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.BestBlock(null, ret); }
 472                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
 473                 return ret_hu_conv;
 474         }
 475
 476         /**
 477          * Triggers rebroadcasts/fee-bumps of pending claims from a force-closed channel. This is
 478          * crucial in preventing certain classes of pinning attacks, detecting substantial mempool
 479          * feerate changes between blocks, and ensuring reliability if broadcasting fails. We recommend
 480          * invoking this every 30 seconds, or lower if running in an environment with spotty
 481          * connections, like on mobile.
 482          */
 483         public void rebroadcast_pending_claims(org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) {
 484                 bindings.ChannelMonitor_rebroadcast_pending_claims(this.ptr, broadcaster.ptr, fee_estimator.ptr, logger.ptr);
 485                 Reference.reachabilityFence(this);
 486                 Reference.reachabilityFence(broadcaster);
 487                 Reference.reachabilityFence(fee_estimator);
 488                 Reference.reachabilityFence(logger);
 489                 if (this != null) { this.ptrs_to.add(broadcaster); };
 490                 if (this != null) { this.ptrs_to.add(fee_estimator); };
 491                 if (this != null) { this.ptrs_to.add(logger); };
 492         }
 493
 494         /**
 495          * Returns the descriptors for relevant outputs (i.e., those that we can spend) within the
 496          * transaction if they exist and the transaction has at least [`ANTI_REORG_DELAY`]
 497          * confirmations. For [`SpendableOutputDescriptor::DelayedPaymentOutput`] descriptors to be
 498          * returned, the transaction must have at least `max(ANTI_REORG_DELAY, to_self_delay)`
 499          * confirmations.
 500          *
 501          * Descriptors returned by this method are primarily exposed via [`Event::SpendableOutputs`]
 502          * once they are no longer under reorg risk. This method serves as a way to retrieve these
 503          * descriptors at a later time, either for historical purposes, or to replay any
 504          * missed/unhandled descriptors. For the purpose of gathering historical records, if the
 505          * channel close has fully resolved (i.e., [`ChannelMonitor::get_claimable_balances`] returns
 506          * an empty set), you can retrieve all spendable outputs by providing all descendant spending
 507          * transactions starting from the channel's funding transaction and going down three levels.
 508          *
 509          * `tx` is a transaction we'll scan the outputs of. Any transaction can be provided. If any
 510          * outputs which can be spent by us are found, at least one descriptor is returned.
 511          *
 512          * `confirmation_height` must be the height of the block in which `tx` was included in.
 513          */
 514         public SpendableOutputDescriptor[] get_spendable_outputs(byte[] tx, int confirmation_height) {
 515                 long[] ret = bindings.ChannelMonitor_get_spendable_outputs(this.ptr, tx, confirmation_height);
 516                 Reference.reachabilityFence(this);
 517                 Reference.reachabilityFence(tx);
 518                 Reference.reachabilityFence(confirmation_height);
 519                 int ret_conv_27_len = ret.length;
 520                 SpendableOutputDescriptor[] ret_conv_27_arr = new SpendableOutputDescriptor[ret_conv_27_len];
 521                 for (int b = 0; b < ret_conv_27_len; b++) {
 522                         long ret_conv_27 = ret[b];
 523                         org.ldk.structs.SpendableOutputDescriptor ret_conv_27_hu_conv = org.ldk.structs.SpendableOutputDescriptor.constr_from_ptr(ret_conv_27);
 524                         if (ret_conv_27_hu_conv != null) { ret_conv_27_hu_conv.ptrs_to.add(this); };
 525                         ret_conv_27_arr[b] = ret_conv_27_hu_conv;
 526                 }
 527                 return ret_conv_27_arr;
 528         }
 529
 530         /**
 531          * Gets the balances in this channel which are either claimable by us if we were to
 532          * force-close the channel now or which are claimable on-chain (possibly awaiting
 533          * confirmation).
 534          *
 535          * Any balances in the channel which are available on-chain (excluding on-chain fees) are
 536          * included here until an [`Event::SpendableOutputs`] event has been generated for the
 537          * balance, or until our counterparty has claimed the balance and accrued several
 538          * confirmations on the claim transaction.
 539          *
 540          * Note that for `ChannelMonitors` which track a channel which went on-chain with versions of
 541          * LDK prior to 0.0.111, not all or excess balances may be included.
 542          *
 543          * See [`Balance`] for additional details on the types of claimable balances which
 544          * may be returned here and their meanings.
 545          */
 546         public Balance[] get_claimable_balances() {
 547                 long[] ret = bindings.ChannelMonitor_get_claimable_balances(this.ptr);
 548                 Reference.reachabilityFence(this);
 549                 int ret_conv_9_len = ret.length;
 550                 Balance[] ret_conv_9_arr = new Balance[ret_conv_9_len];
 551                 for (int j = 0; j < ret_conv_9_len; j++) {
 552                         long ret_conv_9 = ret[j];
 553                         org.ldk.structs.Balance ret_conv_9_hu_conv = org.ldk.structs.Balance.constr_from_ptr(ret_conv_9);
 554                         if (ret_conv_9_hu_conv != null) { ret_conv_9_hu_conv.ptrs_to.add(this); };
 555                         ret_conv_9_arr[j] = ret_conv_9_hu_conv;
 556                 }
 557                 return ret_conv_9_arr;
 558         }
 559
 560 }