_ Git - ldk-java/blob - src/main/java/org/ldk/structs/ChainMonitor.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  * An implementation of [`chain::Watch`] for monitoring channels.
  13  *
  14  * Connected and disconnected blocks must be provided to `ChainMonitor` as documented by
  15  * [`chain::Watch`]. May be used in conjunction with [`ChannelManager`] to monitor channels locally
  16  * or used independently to monitor channels remotely. See the [module-level documentation] for
  17  * details.
  18  *
  19  * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
  20  * [module-level documentation]: crate::chain::chainmonitor
  21  */
  22 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  23 public class ChainMonitor extends CommonBase {
  24         ChainMonitor(Object _dummy, long ptr) { super(ptr); }
  25         @Override @SuppressWarnings("deprecation")
  26         protected void finalize() throws Throwable {
  27                 super.finalize();
  28                 if (ptr != 0) { bindings.ChainMonitor_free(ptr); }
  29         }
  30
  31         /**
  32          * Creates a new `ChainMonitor` used to watch on-chain activity pertaining to channels.
  33          *
  34          * When an optional chain source implementing [`chain::Filter`] is provided, the chain monitor
  35          * will call back to it indicating transactions and outputs of interest. This allows clients to
  36          * pre-filter blocks or only fetch blocks matching a compact filter. Otherwise, clients may
  37          * always need to fetch full blocks absent another means for determining which blocks contain
  38          * transactions relevant to the watched channels.
  39          */
  40         public static ChainMonitor of(Option_FilterZ chain_source, BroadcasterInterface broadcaster, Logger logger, FeeEstimator feeest, Persist persister) {
  41                 long ret = bindings.ChainMonitor_new(chain_source.ptr, broadcaster == null ? 0 : broadcaster.ptr, logger == null ? 0 : logger.ptr, feeest == null ? 0 : feeest.ptr, persister == null ? 0 : persister.ptr);
  42                 Reference.reachabilityFence(chain_source);
  43                 Reference.reachabilityFence(broadcaster);
  44                 Reference.reachabilityFence(logger);
  45                 Reference.reachabilityFence(feeest);
  46                 Reference.reachabilityFence(persister);
  47                 if (ret >= 0 && ret <= 4096) { return null; }
  48                 ChainMonitor ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new ChainMonitor(null, ret); }
  49                 ret_hu_conv.ptrs_to.add(ret_hu_conv);
  50                 ret_hu_conv.ptrs_to.add(chain_source);
  51                 ret_hu_conv.ptrs_to.add(broadcaster);
  52                 ret_hu_conv.ptrs_to.add(logger);
  53                 ret_hu_conv.ptrs_to.add(feeest);
  54                 ret_hu_conv.ptrs_to.add(persister);
  55                 return ret_hu_conv;
  56         }
  57
  58         /**
  59          * Gets the balances in the contained [`ChannelMonitor`]s which are claimable on-chain or
  60          * claims which are awaiting confirmation.
  61          *
  62          * Includes the balances from each [`ChannelMonitor`] *except* those included in
  63          * `ignored_channels`, allowing you to filter out balances from channels which are still open
  64          * (and whose balance should likely be pulled from the [`ChannelDetails`]).
  65          *
  66          * See [`ChannelMonitor::get_claimable_balances`] for more details on the exact criteria for
  67          * inclusion in the return value.
  68          */
  69         public Balance[] get_claimable_balances(ChannelDetails[] ignored_channels) {
  70                 long[] ret = bindings.ChainMonitor_get_claimable_balances(this.ptr, ignored_channels != null ? Arrays.stream(ignored_channels).mapToLong(ignored_channels_conv_16 -> ignored_channels_conv_16 == null ? 0 : ignored_channels_conv_16.ptr & ~1).toArray() : null);
  71                 Reference.reachabilityFence(this);
  72                 Reference.reachabilityFence(ignored_channels);
  73                 int ret_conv_9_len = ret.length;
  74                 Balance[] ret_conv_9_arr = new Balance[ret_conv_9_len];
  75                 for (int j = 0; j < ret_conv_9_len; j++) {
  76                         long ret_conv_9 = ret[j];
  77                         org.ldk.structs.Balance ret_conv_9_hu_conv = org.ldk.structs.Balance.constr_from_ptr(ret_conv_9);
  78                         ret_conv_9_hu_conv.ptrs_to.add(this);
  79                         ret_conv_9_arr[j] = ret_conv_9_hu_conv;
  80                 }
  81                 return ret_conv_9_arr;
  82         }
  83
  84         /**
  85          * Gets the [`LockedChannelMonitor`] for a given funding outpoint, returning an `Err` if no
  86          * such [`ChannelMonitor`] is currently being monitored for.
  87          *
  88          * Note that the result holds a mutex over our monitor set, and should not be held
  89          * indefinitely.
  90          */
  91         public Result_LockedChannelMonitorNoneZ get_monitor(OutPoint funding_txo) {
  92                 long ret = bindings.ChainMonitor_get_monitor(this.ptr, funding_txo == null ? 0 : funding_txo.ptr & ~1);
  93                 Reference.reachabilityFence(this);
  94                 Reference.reachabilityFence(funding_txo);
  95                 if (ret >= 0 && ret <= 4096) { return null; }
  96                 Result_LockedChannelMonitorNoneZ ret_hu_conv = Result_LockedChannelMonitorNoneZ.constr_from_ptr(ret);
  97                 return ret_hu_conv;
  98         }
  99
 100         /**
 101          * Lists the funding outpoint of each [`ChannelMonitor`] being monitored.
 102          *
 103          * Note that [`ChannelMonitor`]s are not removed when a channel is closed as they are always
 104          * monitoring for on-chain state resolutions.
 105          */
 106         public OutPoint[] list_monitors() {
 107                 long[] ret = bindings.ChainMonitor_list_monitors(this.ptr);
 108                 Reference.reachabilityFence(this);
 109                 int ret_conv_10_len = ret.length;
 110                 OutPoint[] ret_conv_10_arr = new OutPoint[ret_conv_10_len];
 111                 for (int k = 0; k < ret_conv_10_len; k++) {
 112                         long ret_conv_10 = ret[k];
 113                         OutPoint ret_conv_10_hu_conv = null; if (ret_conv_10 < 0 || ret_conv_10 > 4096) { ret_conv_10_hu_conv = new OutPoint(null, ret_conv_10); }
 114                         ret_conv_10_hu_conv.ptrs_to.add(this);
 115                         ret_conv_10_arr[k] = ret_conv_10_hu_conv;
 116                 }
 117                 return ret_conv_10_arr;
 118         }
 119
 120         /**
 121          * Indicates the persistence of a [`ChannelMonitor`] has completed after
 122          * [`ChannelMonitorUpdateErr::TemporaryFailure`] was returned from an update operation.
 123          *
 124          * Thus, the anticipated use is, at a high level:
 125          * 1) This [`ChainMonitor`] calls [`Persist::update_persisted_channel`] which stores the
 126          * update to disk and begins updating any remote (e.g. watchtower/backup) copies,
 127          * returning [`ChannelMonitorUpdateErr::TemporaryFailure`],
 128          * 2) once all remote copies are updated, you call this function with the
 129          * `completed_update_id` that completed, and once all pending updates have completed the
 130          * channel will be re-enabled.
 131          *
 132          * Returns an [`APIError::APIMisuseError`] if `funding_txo` does not match any currently
 133          * registered [`ChannelMonitor`]s.
 134          */
 135         public Result_NoneAPIErrorZ channel_monitor_updated(OutPoint funding_txo, MonitorUpdateId completed_update_id) {
 136                 long ret = bindings.ChainMonitor_channel_monitor_updated(this.ptr, funding_txo == null ? 0 : funding_txo.ptr & ~1, completed_update_id == null ? 0 : completed_update_id.ptr & ~1);
 137                 Reference.reachabilityFence(this);
 138                 Reference.reachabilityFence(funding_txo);
 139                 Reference.reachabilityFence(completed_update_id);
 140                 if (ret >= 0 && ret <= 4096) { return null; }
 141                 Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
 142                 return ret_hu_conv;
 143         }
 144
 145         /**
 146          * Constructs a new Listen which calls the relevant methods on this_arg.
 147          * This copies the `inner` pointer in this_arg and thus the returned Listen must be freed before this_arg is
 148          */
 149         public Listen as_Listen() {
 150                 long ret = bindings.ChainMonitor_as_Listen(this.ptr);
 151                 Reference.reachabilityFence(this);
 152                 if (ret >= 0 && ret <= 4096) { return null; }
 153                 Listen ret_hu_conv = new Listen(null, ret);
 154                 ret_hu_conv.ptrs_to.add(this);
 155                 return ret_hu_conv;
 156         }
 157
 158         /**
 159          * Constructs a new Confirm which calls the relevant methods on this_arg.
 160          * This copies the `inner` pointer in this_arg and thus the returned Confirm must be freed before this_arg is
 161          */
 162         public Confirm as_Confirm() {
 163                 long ret = bindings.ChainMonitor_as_Confirm(this.ptr);
 164                 Reference.reachabilityFence(this);
 165                 if (ret >= 0 && ret <= 4096) { return null; }
 166                 Confirm ret_hu_conv = new Confirm(null, ret);
 167                 ret_hu_conv.ptrs_to.add(this);
 168                 return ret_hu_conv;
 169         }
 170
 171         /**
 172          * Constructs a new Watch which calls the relevant methods on this_arg.
 173          * This copies the `inner` pointer in this_arg and thus the returned Watch must be freed before this_arg is
 174          */
 175         public Watch as_Watch() {
 176                 long ret = bindings.ChainMonitor_as_Watch(this.ptr);
 177                 Reference.reachabilityFence(this);
 178                 if (ret >= 0 && ret <= 4096) { return null; }
 179                 Watch ret_hu_conv = new Watch(null, ret);
 180                 ret_hu_conv.ptrs_to.add(this);
 181                 return ret_hu_conv;
 182         }
 183
 184         /**
 185          * Constructs a new EventsProvider which calls the relevant methods on this_arg.
 186          * This copies the `inner` pointer in this_arg and thus the returned EventsProvider must be freed before this_arg is
 187          */
 188         public EventsProvider as_EventsProvider() {
 189                 long ret = bindings.ChainMonitor_as_EventsProvider(this.ptr);
 190                 Reference.reachabilityFence(this);
 191                 if (ret >= 0 && ret <= 4096) { return null; }
 192                 EventsProvider ret_hu_conv = new EventsProvider(null, ret);
 193                 ret_hu_conv.ptrs_to.add(this);
 194                 return ret_hu_conv;
 195         }
 196
 197 }