8695b951b13a1a29058139c278633cb94417b347
[ldk-java] / 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                 Balance[] ret_conv_9_arr = new Balance[ret.length];
74                 for (int j = 0; j < ret.length; j++) {
75                         long ret_conv_9 = ret[j];
76                         Balance ret_conv_9_hu_conv = Balance.constr_from_ptr(ret_conv_9);
77                         ret_conv_9_hu_conv.ptrs_to.add(this);
78                         ret_conv_9_arr[j] = ret_conv_9_hu_conv;
79                 }
80                 return ret_conv_9_arr;
81         }
82
83         /**
84          * Gets the [`LockedChannelMonitor`] for a given funding outpoint, returning an `Err` if no
85          * such [`ChannelMonitor`] is currently being monitored for.
86          * 
87          * Note that the result holds a mutex over our monitor set, and should not be held
88          * indefinitely.
89          */
90         public Result_LockedChannelMonitorNoneZ get_monitor(OutPoint funding_txo) {
91                 long ret = bindings.ChainMonitor_get_monitor(this.ptr, funding_txo == null ? 0 : funding_txo.ptr & ~1);
92                 Reference.reachabilityFence(this);
93                 Reference.reachabilityFence(funding_txo);
94                 if (ret >= 0 && ret <= 4096) { return null; }
95                 Result_LockedChannelMonitorNoneZ ret_hu_conv = Result_LockedChannelMonitorNoneZ.constr_from_ptr(ret);
96                 return ret_hu_conv;
97         }
98
99         /**
100          * Lists the funding outpoint of each [`ChannelMonitor`] being monitored.
101          * 
102          * Note that [`ChannelMonitor`]s are not removed when a channel is closed as they are always
103          * monitoring for on-chain state resolutions.
104          */
105         public OutPoint[] list_monitors() {
106                 long[] ret = bindings.ChainMonitor_list_monitors(this.ptr);
107                 Reference.reachabilityFence(this);
108                 OutPoint[] ret_conv_10_arr = new OutPoint[ret.length];
109                 for (int k = 0; k < ret.length; k++) {
110                         long ret_conv_10 = ret[k];
111                         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); }
112                         ret_conv_10_hu_conv.ptrs_to.add(this);
113                         ret_conv_10_arr[k] = ret_conv_10_hu_conv;
114                 }
115                 return ret_conv_10_arr;
116         }
117
118         /**
119          * Indicates the persistence of a [`ChannelMonitor`] has completed after
120          * [`ChannelMonitorUpdateErr::TemporaryFailure`] was returned from an update operation.
121          * 
122          * Thus, the anticipated use is, at a high level:
123          * 1) This [`ChainMonitor`] calls [`Persist::update_persisted_channel`] which stores the
124          * update to disk and begins updating any remote (e.g. watchtower/backup) copies,
125          * returning [`ChannelMonitorUpdateErr::TemporaryFailure`],
126          * 2) once all remote copies are updated, you call this function with the
127          * `completed_update_id` that completed, and once all pending updates have completed the
128          * channel will be re-enabled.
129          * 
130          * Returns an [`APIError::APIMisuseError`] if `funding_txo` does not match any currently
131          * registered [`ChannelMonitor`]s.
132          */
133         public Result_NoneAPIErrorZ channel_monitor_updated(OutPoint funding_txo, MonitorUpdateId completed_update_id) {
134                 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);
135                 Reference.reachabilityFence(this);
136                 Reference.reachabilityFence(funding_txo);
137                 Reference.reachabilityFence(completed_update_id);
138                 if (ret >= 0 && ret <= 4096) { return null; }
139                 Result_NoneAPIErrorZ ret_hu_conv = Result_NoneAPIErrorZ.constr_from_ptr(ret);
140                 return ret_hu_conv;
141         }
142
143         /**
144          * Constructs a new Listen which calls the relevant methods on this_arg.
145          * This copies the `inner` pointer in this_arg and thus the returned Listen must be freed before this_arg is
146          */
147         public Listen as_Listen() {
148                 long ret = bindings.ChainMonitor_as_Listen(this.ptr);
149                 Reference.reachabilityFence(this);
150                 if (ret >= 0 && ret <= 4096) { return null; }
151                 Listen ret_hu_conv = new Listen(null, ret);
152                 ret_hu_conv.ptrs_to.add(this);
153                 return ret_hu_conv;
154         }
155
156         /**
157          * Constructs a new Confirm which calls the relevant methods on this_arg.
158          * This copies the `inner` pointer in this_arg and thus the returned Confirm must be freed before this_arg is
159          */
160         public Confirm as_Confirm() {
161                 long ret = bindings.ChainMonitor_as_Confirm(this.ptr);
162                 Reference.reachabilityFence(this);
163                 if (ret >= 0 && ret <= 4096) { return null; }
164                 Confirm ret_hu_conv = new Confirm(null, ret);
165                 ret_hu_conv.ptrs_to.add(this);
166                 return ret_hu_conv;
167         }
168
169         /**
170          * Constructs a new Watch which calls the relevant methods on this_arg.
171          * This copies the `inner` pointer in this_arg and thus the returned Watch must be freed before this_arg is
172          */
173         public Watch as_Watch() {
174                 long ret = bindings.ChainMonitor_as_Watch(this.ptr);
175                 Reference.reachabilityFence(this);
176                 if (ret >= 0 && ret <= 4096) { return null; }
177                 Watch ret_hu_conv = new Watch(null, ret);
178                 ret_hu_conv.ptrs_to.add(this);
179                 return ret_hu_conv;
180         }
181
182         /**
183          * Constructs a new EventsProvider which calls the relevant methods on this_arg.
184          * This copies the `inner` pointer in this_arg and thus the returned EventsProvider must be freed before this_arg is
185          */
186         public EventsProvider as_EventsProvider() {
187                 long ret = bindings.ChainMonitor_as_EventsProvider(this.ptr);
188                 Reference.reachabilityFence(this);
189                 if (ret >= 0 && ret <= 4096) { return null; }
190                 EventsProvider ret_hu_conv = new EventsProvider(null, ret);
191                 ret_hu_conv.ptrs_to.add(this);
192                 return ret_hu_conv;
193         }
194
195 }