1 package org.ldk.structs;
3 import org.ldk.impl.bindings;
4 import org.ldk.enums.*;
6 import java.util.Arrays;
7 import java.lang.ref.Reference;
8 import javax.annotation.Nullable;
12 * Represents the network as nodes and channels between them
14 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
15 public class NetworkGraph extends CommonBase {
16 NetworkGraph(Object _dummy, long ptr) { super(ptr); }
17 @Override @SuppressWarnings("deprecation")
18 protected void finalize() throws Throwable {
20 if (ptr != 0) { bindings.NetworkGraph_free(ptr); }
24 * Handles any network updates originating from [`Event`]s.
26 * [`Event`]: crate::util::events::Event
28 public void handle_network_update(org.ldk.structs.NetworkUpdate network_update) {
29 bindings.NetworkGraph_handle_network_update(this.ptr, network_update == null ? 0 : network_update.ptr);
30 Reference.reachabilityFence(this);
31 Reference.reachabilityFence(network_update);
35 * Serialize the NetworkGraph object into a byte array which can be read by NetworkGraph_read
37 public byte[] write() {
38 byte[] ret = bindings.NetworkGraph_write(this.ptr);
39 Reference.reachabilityFence(this);
44 * Read a NetworkGraph from a byte array, created by NetworkGraph_write
46 public static Result_NetworkGraphDecodeErrorZ read(byte[] ser, org.ldk.structs.Logger arg) {
47 long ret = bindings.NetworkGraph_read(ser, arg == null ? 0 : arg.ptr);
48 Reference.reachabilityFence(ser);
49 Reference.reachabilityFence(arg);
50 if (ret >= 0 && ret <= 4096) { return null; }
51 Result_NetworkGraphDecodeErrorZ ret_hu_conv = Result_NetworkGraphDecodeErrorZ.constr_from_ptr(ret);
52 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(arg); };
57 * Creates a new, empty, network graph.
59 public static NetworkGraph of(org.ldk.enums.Network network, org.ldk.structs.Logger logger) {
60 long ret = bindings.NetworkGraph_new(network, logger == null ? 0 : logger.ptr);
61 Reference.reachabilityFence(network);
62 Reference.reachabilityFence(logger);
63 if (ret >= 0 && ret <= 4096) { return null; }
64 org.ldk.structs.NetworkGraph ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.NetworkGraph(null, ret); }
65 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
66 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(logger); };
71 * Returns a read-only view of the network graph.
73 public ReadOnlyNetworkGraph read_only() {
74 long ret = bindings.NetworkGraph_read_only(this.ptr);
75 Reference.reachabilityFence(this);
76 if (ret >= 0 && ret <= 4096) { return null; }
77 org.ldk.structs.ReadOnlyNetworkGraph ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.ReadOnlyNetworkGraph(null, ret); }
78 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
83 * The unix timestamp provided by the most recent rapid gossip sync.
84 * It will be set by the rapid sync process after every sync completion.
86 public Option_u32Z get_last_rapid_gossip_sync_timestamp() {
87 long ret = bindings.NetworkGraph_get_last_rapid_gossip_sync_timestamp(this.ptr);
88 Reference.reachabilityFence(this);
89 if (ret >= 0 && ret <= 4096) { return null; }
90 org.ldk.structs.Option_u32Z ret_hu_conv = org.ldk.structs.Option_u32Z.constr_from_ptr(ret);
91 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
96 * Update the unix timestamp provided by the most recent rapid gossip sync.
97 * This should be done automatically by the rapid sync process after every sync completion.
99 public void set_last_rapid_gossip_sync_timestamp(int last_rapid_gossip_sync_timestamp) {
100 bindings.NetworkGraph_set_last_rapid_gossip_sync_timestamp(this.ptr, last_rapid_gossip_sync_timestamp);
101 Reference.reachabilityFence(this);
102 Reference.reachabilityFence(last_rapid_gossip_sync_timestamp);
106 * For an already known node (from channel announcements), update its stored properties from a
107 * given node announcement.
109 * You probably don't want to call this directly, instead relying on a P2PGossipSync's
110 * RoutingMessageHandler implementation to call it indirectly. This may be useful to accept
111 * routing messages from a source using a protocol other than the lightning P2P protocol.
113 public Result_NoneLightningErrorZ update_node_from_announcement(org.ldk.structs.NodeAnnouncement msg) {
114 long ret = bindings.NetworkGraph_update_node_from_announcement(this.ptr, msg == null ? 0 : msg.ptr);
115 Reference.reachabilityFence(this);
116 Reference.reachabilityFence(msg);
117 if (ret >= 0 && ret <= 4096) { return null; }
118 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
119 if (this != null) { this.ptrs_to.add(msg); };
124 * For an already known node (from channel announcements), update its stored properties from a
125 * given node announcement without verifying the associated signatures. Because we aren't
126 * given the associated signatures here we cannot relay the node announcement to any of our
129 public Result_NoneLightningErrorZ update_node_from_unsigned_announcement(org.ldk.structs.UnsignedNodeAnnouncement msg) {
130 long ret = bindings.NetworkGraph_update_node_from_unsigned_announcement(this.ptr, msg == null ? 0 : msg.ptr);
131 Reference.reachabilityFence(this);
132 Reference.reachabilityFence(msg);
133 if (ret >= 0 && ret <= 4096) { return null; }
134 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
135 if (this != null) { this.ptrs_to.add(msg); };
140 * Store or update channel info from a channel announcement.
142 * You probably don't want to call this directly, instead relying on a P2PGossipSync's
143 * RoutingMessageHandler implementation to call it indirectly. This may be useful to accept
144 * routing messages from a source using a protocol other than the lightning P2P protocol.
146 * If a [`UtxoLookup`] object is provided via `utxo_lookup`, it will be called to verify
147 * the corresponding UTXO exists on chain and is correctly-formatted.
149 public Result_NoneLightningErrorZ update_channel_from_announcement(org.ldk.structs.ChannelAnnouncement msg, org.ldk.structs.Option_UtxoLookupZ utxo_lookup) {
150 long ret = bindings.NetworkGraph_update_channel_from_announcement(this.ptr, msg == null ? 0 : msg.ptr, utxo_lookup.ptr);
151 Reference.reachabilityFence(this);
152 Reference.reachabilityFence(msg);
153 Reference.reachabilityFence(utxo_lookup);
154 if (ret >= 0 && ret <= 4096) { return null; }
155 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
156 if (this != null) { this.ptrs_to.add(msg); };
157 if (this != null) { this.ptrs_to.add(utxo_lookup); };
162 * Store or update channel info from a channel announcement without verifying the associated
163 * signatures. Because we aren't given the associated signatures here we cannot relay the
164 * channel announcement to any of our peers.
166 * If a [`UtxoLookup`] object is provided via `utxo_lookup`, it will be called to verify
167 * the corresponding UTXO exists on chain and is correctly-formatted.
169 public Result_NoneLightningErrorZ update_channel_from_unsigned_announcement(org.ldk.structs.UnsignedChannelAnnouncement msg, org.ldk.structs.Option_UtxoLookupZ utxo_lookup) {
170 long ret = bindings.NetworkGraph_update_channel_from_unsigned_announcement(this.ptr, msg == null ? 0 : msg.ptr, utxo_lookup.ptr);
171 Reference.reachabilityFence(this);
172 Reference.reachabilityFence(msg);
173 Reference.reachabilityFence(utxo_lookup);
174 if (ret >= 0 && ret <= 4096) { return null; }
175 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
176 if (this != null) { this.ptrs_to.add(msg); };
177 if (this != null) { this.ptrs_to.add(utxo_lookup); };
182 * Update channel from partial announcement data received via rapid gossip sync
184 * `timestamp: u64`: Timestamp emulating the backdated original announcement receipt (by the
185 * rapid gossip sync server)
187 * All other parameters as used in [`msgs::UnsignedChannelAnnouncement`] fields.
189 public Result_NoneLightningErrorZ add_channel_from_partial_announcement(long short_channel_id, long timestamp, org.ldk.structs.ChannelFeatures features, byte[] node_id_1, byte[] node_id_2) {
190 long ret = bindings.NetworkGraph_add_channel_from_partial_announcement(this.ptr, short_channel_id, timestamp, features == null ? 0 : features.ptr, InternalUtils.check_arr_len(node_id_1, 33), InternalUtils.check_arr_len(node_id_2, 33));
191 Reference.reachabilityFence(this);
192 Reference.reachabilityFence(short_channel_id);
193 Reference.reachabilityFence(timestamp);
194 Reference.reachabilityFence(features);
195 Reference.reachabilityFence(node_id_1);
196 Reference.reachabilityFence(node_id_2);
197 if (ret >= 0 && ret <= 4096) { return null; }
198 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
199 if (this != null) { this.ptrs_to.add(features); };
204 * Marks a channel in the graph as failed if a corresponding HTLC fail was sent.
205 * If permanent, removes a channel from the local storage.
206 * May cause the removal of nodes too, if this was their last channel.
207 * If not permanent, makes channels unavailable for routing.
209 public void channel_failed(long short_channel_id, boolean is_permanent) {
210 bindings.NetworkGraph_channel_failed(this.ptr, short_channel_id, is_permanent);
211 Reference.reachabilityFence(this);
212 Reference.reachabilityFence(short_channel_id);
213 Reference.reachabilityFence(is_permanent);
217 * Marks a node in the graph as permanently failed, effectively removing it and its channels
218 * from local storage.
220 public void node_failed_permanent(byte[] node_id) {
221 bindings.NetworkGraph_node_failed_permanent(this.ptr, InternalUtils.check_arr_len(node_id, 33));
222 Reference.reachabilityFence(this);
223 Reference.reachabilityFence(node_id);
227 * Removes information about channels that we haven't heard any updates about in some time.
228 * This can be used regularly to prune the network graph of channels that likely no longer
231 * While there is no formal requirement that nodes regularly re-broadcast their channel
232 * updates every two weeks, the non-normative section of BOLT 7 currently suggests that
233 * pruning occur for updates which are at least two weeks old, which we implement here.
235 * Note that for users of the `lightning-background-processor` crate this method may be
236 * automatically called regularly for you.
238 * This method will also cause us to stop tracking removed nodes and channels if they have been
239 * in the map for a while so that these can be resynced from gossip in the future.
241 * This method is only available with the `std` feature. See
242 * [`NetworkGraph::remove_stale_channels_and_tracking_with_time`] for `no-std` use.
244 public void remove_stale_channels_and_tracking() {
245 bindings.NetworkGraph_remove_stale_channels_and_tracking(this.ptr);
246 Reference.reachabilityFence(this);
250 * Removes information about channels that we haven't heard any updates about in some time.
251 * This can be used regularly to prune the network graph of channels that likely no longer
254 * While there is no formal requirement that nodes regularly re-broadcast their channel
255 * updates every two weeks, the non-normative section of BOLT 7 currently suggests that
256 * pruning occur for updates which are at least two weeks old, which we implement here.
258 * This method will also cause us to stop tracking removed nodes and channels if they have been
259 * in the map for a while so that these can be resynced from gossip in the future.
261 * This function takes the current unix time as an argument. For users with the `std` feature
262 * enabled, [`NetworkGraph::remove_stale_channels_and_tracking`] may be preferable.
264 public void remove_stale_channels_and_tracking_with_time(long current_time_unix) {
265 bindings.NetworkGraph_remove_stale_channels_and_tracking_with_time(this.ptr, current_time_unix);
266 Reference.reachabilityFence(this);
267 Reference.reachabilityFence(current_time_unix);
271 * For an already known (from announcement) channel, update info about one of the directions
274 * You probably don't want to call this directly, instead relying on a P2PGossipSync's
275 * RoutingMessageHandler implementation to call it indirectly. This may be useful to accept
276 * routing messages from a source using a protocol other than the lightning P2P protocol.
278 * If built with `no-std`, any updates with a timestamp more than two weeks in the past or
279 * materially in the future will be rejected.
281 public Result_NoneLightningErrorZ update_channel(org.ldk.structs.ChannelUpdate msg) {
282 long ret = bindings.NetworkGraph_update_channel(this.ptr, msg == null ? 0 : msg.ptr);
283 Reference.reachabilityFence(this);
284 Reference.reachabilityFence(msg);
285 if (ret >= 0 && ret <= 4096) { return null; }
286 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
287 if (this != null) { this.ptrs_to.add(msg); };
292 * For an already known (from announcement) channel, update info about one of the directions
293 * of the channel without verifying the associated signatures. Because we aren't given the
294 * associated signatures here we cannot relay the channel update to any of our peers.
296 * If built with `no-std`, any updates with a timestamp more than two weeks in the past or
297 * materially in the future will be rejected.
299 public Result_NoneLightningErrorZ update_channel_unsigned(org.ldk.structs.UnsignedChannelUpdate msg) {
300 long ret = bindings.NetworkGraph_update_channel_unsigned(this.ptr, msg == null ? 0 : msg.ptr);
301 Reference.reachabilityFence(this);
302 Reference.reachabilityFence(msg);
303 if (ret >= 0 && ret <= 4096) { return null; }
304 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
305 if (this != null) { this.ptrs_to.add(msg); };