_ Git - ldk-java/blob - src/main/java/org/ldk/structs/RoutingMessageHandler.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 javax.annotation.Nullable;
   8
   9 /**
  10  * A trait to describe an object which can receive routing messages.
  11  *
  12  * # Implementor DoS Warnings
  13  *
  14  * For `gossip_queries` messages there are potential DoS vectors when handling
  15  * inbound queries. Implementors using an on-disk network graph should be aware of
  16  * repeated disk I/O for queries accessing different parts of the network graph.
  17  */
  18 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  19 public class RoutingMessageHandler extends CommonBase {
  20         final bindings.LDKRoutingMessageHandler bindings_instance;
  21         RoutingMessageHandler(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
  22         private RoutingMessageHandler(bindings.LDKRoutingMessageHandler arg, bindings.LDKMessageSendEventsProvider MessageSendEventsProvider) {
  23                 super(bindings.LDKRoutingMessageHandler_new(arg, MessageSendEventsProvider));
  24                 this.ptrs_to.add(arg);
  25                 this.ptrs_to.add(MessageSendEventsProvider);
  26                 this.bindings_instance = arg;
  27         }
  28         @Override @SuppressWarnings("deprecation")
  29         protected void finalize() throws Throwable {
  30                 if (ptr != 0) { bindings.RoutingMessageHandler_free(ptr); } super.finalize();
  31         }
  32
  33         public static interface RoutingMessageHandlerInterface {
  34                 /**
  35                  * Handle an incoming node_announcement message, returning true if it should be forwarded on,
  36                  * false or returning an Err otherwise.
  37                  */
  38                 Result_boolLightningErrorZ handle_node_announcement(NodeAnnouncement msg);
  39                 /**
  40                  * Handle a channel_announcement message, returning true if it should be forwarded on, false
  41                  * or returning an Err otherwise.
  42                  */
  43                 Result_boolLightningErrorZ handle_channel_announcement(ChannelAnnouncement msg);
  44                 /**
  45                  * Handle an incoming channel_update message, returning true if it should be forwarded on,
  46                  * false or returning an Err otherwise.
  47                  */
  48                 Result_boolLightningErrorZ handle_channel_update(ChannelUpdate msg);
  49                 /**
  50                  * Gets a subset of the channel announcements and updates required to dump our routing table
  51                  * to a remote node, starting at the short_channel_id indicated by starting_point and
  52                  * including the batch_amount entries immediately higher in numerical value than starting_point.
  53                  */
  54                 ThreeTuple<ChannelAnnouncement, ChannelUpdate, ChannelUpdate>[] get_next_channel_announcements(long starting_point, byte batch_amount);
  55                 /**
  56                  * Gets a subset of the node announcements required to dump our routing table to a remote node,
  57                  * starting at the node *after* the provided publickey and including batch_amount entries
  58                  * immediately higher (as defined by <PublicKey as Ord>::cmp) than starting_point.
  59                  * If None is provided for starting_point, we start at the first node.
  60                  *
  61                  * Note that starting_point (or a relevant inner pointer) may be NULL or all-0s to represent None
  62                  */
  63                 NodeAnnouncement[] get_next_node_announcements(byte[] starting_point, byte batch_amount);
  64                 /**
  65                  * Called when a connection is established with a peer. This can be used to
  66                  * perform routing table synchronization using a strategy defined by the
  67                  * implementor.
  68                  */
  69                 void sync_routing_table(byte[] their_node_id, Init init);
  70                 /**
  71                  * Handles the reply of a query we initiated to learn about channels
  72                  * for a given range of blocks. We can expect to receive one or more
  73                  * replies to a single query.
  74                  */
  75                 Result_NoneLightningErrorZ handle_reply_channel_range(byte[] their_node_id, ReplyChannelRange msg);
  76                 /**
  77                  * Handles the reply of a query we initiated asking for routing gossip
  78                  * messages for a list of channels. We should receive this message when
  79                  * a node has completed its best effort to send us the pertaining routing
  80                  * gossip messages.
  81                  */
  82                 Result_NoneLightningErrorZ handle_reply_short_channel_ids_end(byte[] their_node_id, ReplyShortChannelIdsEnd msg);
  83                 /**
  84                  * Handles when a peer asks us to send a list of short_channel_ids
  85                  * for the requested range of blocks.
  86                  */
  87                 Result_NoneLightningErrorZ handle_query_channel_range(byte[] their_node_id, QueryChannelRange msg);
  88                 /**
  89                  * Handles when a peer asks us to send routing gossip messages for a
  90                  * list of short_channel_ids.
  91                  */
  92                 Result_NoneLightningErrorZ handle_query_short_channel_ids(byte[] their_node_id, QueryShortChannelIds msg);
  93         }
  94         private static class LDKRoutingMessageHandlerHolder { RoutingMessageHandler held; }
  95         public static RoutingMessageHandler new_impl(RoutingMessageHandlerInterface arg, MessageSendEventsProvider.MessageSendEventsProviderInterface MessageSendEventsProvider_impl) {
  96                 final LDKRoutingMessageHandlerHolder impl_holder = new LDKRoutingMessageHandlerHolder();
  97                 impl_holder.held = new RoutingMessageHandler(new bindings.LDKRoutingMessageHandler() {
  98                         @Override public long handle_node_announcement(long msg) {
  99                                 NodeAnnouncement msg_hu_conv = new NodeAnnouncement(null, msg);
 100                                 Result_boolLightningErrorZ ret = arg.handle_node_announcement(msg_hu_conv);
 101                                 long result = ret != null ? ret.ptr : 0;
 102                                 return result;
 103                         }
 104                         @Override public long handle_channel_announcement(long msg) {
 105                                 ChannelAnnouncement msg_hu_conv = new ChannelAnnouncement(null, msg);
 106                                 Result_boolLightningErrorZ ret = arg.handle_channel_announcement(msg_hu_conv);
 107                                 long result = ret != null ? ret.ptr : 0;
 108                                 return result;
 109                         }
 110                         @Override public long handle_channel_update(long msg) {
 111                                 ChannelUpdate msg_hu_conv = new ChannelUpdate(null, msg);
 112                                 Result_boolLightningErrorZ ret = arg.handle_channel_update(msg_hu_conv);
 113                                 long result = ret != null ? ret.ptr : 0;
 114                                 return result;
 115                         }
 116                         @Override public long[] get_next_channel_announcements(long starting_point, byte batch_amount) {
 117                                 ThreeTuple<ChannelAnnouncement, ChannelUpdate, ChannelUpdate>[] ret = arg.get_next_channel_announcements(starting_point, batch_amount);
 118                                 long[] result = ret != null ? Arrays.stream(ret).mapToLong(ret_conv_63 -> bindings.C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ_new(ret_conv_63.a == null ? 0 : ret_conv_63.a.ptr & ~1, ret_conv_63.b == null ? 0 : ret_conv_63.b.ptr & ~1, ret_conv_63.c == null ? 0 : ret_conv_63.c.ptr & ~1)).toArray() : null;
 119                                 for (ThreeTuple<ChannelAnnouncement, ChannelUpdate, ChannelUpdate> ret_conv_63: ret) { impl_holder.held.ptrs_to.add(ret_conv_63.a); impl_holder.held.ptrs_to.add(ret_conv_63.b); impl_holder.held.ptrs_to.add(ret_conv_63.c); };
 120                                 return result;
 121                         }
 122                         @Override public long[] get_next_node_announcements(byte[] starting_point, byte batch_amount) {
 123                                 NodeAnnouncement[] ret = arg.get_next_node_announcements(starting_point, batch_amount);
 124                                 long[] result = ret != null ? Arrays.stream(ret).mapToLong(ret_conv_18 -> ret_conv_18 == null ? 0 : ret_conv_18.ptr & ~1).toArray() : null;
 125                                 for (NodeAnnouncement ret_conv_18: ret) { impl_holder.held.ptrs_to.add(ret_conv_18); };
 126                                 return result;
 127                         }
 128                         @Override public void sync_routing_table(byte[] their_node_id, long init) {
 129                                 Init init_hu_conv = new Init(null, init);
 130                                 arg.sync_routing_table(their_node_id, init_hu_conv);
 131                         }
 132                         @Override public long handle_reply_channel_range(byte[] their_node_id, long msg) {
 133                                 ReplyChannelRange msg_hu_conv = new ReplyChannelRange(null, msg);
 134                                 msg_hu_conv.ptrs_to.add(this);
 135                                 Result_NoneLightningErrorZ ret = arg.handle_reply_channel_range(their_node_id, msg_hu_conv);
 136                                 long result = ret != null ? ret.ptr : 0;
 137                                 return result;
 138                         }
 139                         @Override public long handle_reply_short_channel_ids_end(byte[] their_node_id, long msg) {
 140                                 ReplyShortChannelIdsEnd msg_hu_conv = new ReplyShortChannelIdsEnd(null, msg);
 141                                 msg_hu_conv.ptrs_to.add(this);
 142                                 Result_NoneLightningErrorZ ret = arg.handle_reply_short_channel_ids_end(their_node_id, msg_hu_conv);
 143                                 long result = ret != null ? ret.ptr : 0;
 144                                 return result;
 145                         }
 146                         @Override public long handle_query_channel_range(byte[] their_node_id, long msg) {
 147                                 QueryChannelRange msg_hu_conv = new QueryChannelRange(null, msg);
 148                                 msg_hu_conv.ptrs_to.add(this);
 149                                 Result_NoneLightningErrorZ ret = arg.handle_query_channel_range(their_node_id, msg_hu_conv);
 150                                 long result = ret != null ? ret.ptr : 0;
 151                                 return result;
 152                         }
 153                         @Override public long handle_query_short_channel_ids(byte[] their_node_id, long msg) {
 154                                 QueryShortChannelIds msg_hu_conv = new QueryShortChannelIds(null, msg);
 155                                 msg_hu_conv.ptrs_to.add(this);
 156                                 Result_NoneLightningErrorZ ret = arg.handle_query_short_channel_ids(their_node_id, msg_hu_conv);
 157                                 long result = ret != null ? ret.ptr : 0;
 158                                 return result;
 159                         }
 160                 }, MessageSendEventsProvider.new_impl(MessageSendEventsProvider_impl).bindings_instance);
 161                 return impl_holder.held;
 162         }
 163
 164         /**
 165          * Gets the underlying MessageSendEventsProvider.
 166          */
 167         public MessageSendEventsProvider get_message_send_events_provider() {
 168                 MessageSendEventsProvider res = new MessageSendEventsProvider(null, bindings.LDKRoutingMessageHandler_get_MessageSendEventsProvider(this.ptr));
 169                 this.ptrs_to.add(res);
 170                 return res;
 171         }
 172
 173         /**
 174          * Handle an incoming node_announcement message, returning true if it should be forwarded on,
 175          * false or returning an Err otherwise.
 176          */
 177         public Result_boolLightningErrorZ handle_node_announcement(NodeAnnouncement msg) {
 178                 long ret = bindings.RoutingMessageHandler_handle_node_announcement(this.ptr, msg == null ? 0 : msg.ptr & ~1);
 179                 if (ret < 1024) { return null; }
 180                 Result_boolLightningErrorZ ret_hu_conv = Result_boolLightningErrorZ.constr_from_ptr(ret);
 181                 this.ptrs_to.add(msg);
 182                 return ret_hu_conv;
 183         }
 184
 185         /**
 186          * Handle a channel_announcement message, returning true if it should be forwarded on, false
 187          * or returning an Err otherwise.
 188          */
 189         public Result_boolLightningErrorZ handle_channel_announcement(ChannelAnnouncement msg) {
 190                 long ret = bindings.RoutingMessageHandler_handle_channel_announcement(this.ptr, msg == null ? 0 : msg.ptr & ~1);
 191                 if (ret < 1024) { return null; }
 192                 Result_boolLightningErrorZ ret_hu_conv = Result_boolLightningErrorZ.constr_from_ptr(ret);
 193                 this.ptrs_to.add(msg);
 194                 return ret_hu_conv;
 195         }
 196
 197         /**
 198          * Handle an incoming channel_update message, returning true if it should be forwarded on,
 199          * false or returning an Err otherwise.
 200          */
 201         public Result_boolLightningErrorZ handle_channel_update(ChannelUpdate msg) {
 202                 long ret = bindings.RoutingMessageHandler_handle_channel_update(this.ptr, msg == null ? 0 : msg.ptr & ~1);
 203                 if (ret < 1024) { return null; }
 204                 Result_boolLightningErrorZ ret_hu_conv = Result_boolLightningErrorZ.constr_from_ptr(ret);
 205                 this.ptrs_to.add(msg);
 206                 return ret_hu_conv;
 207         }
 208
 209         /**
 210          * Gets a subset of the channel announcements and updates required to dump our routing table
 211          * to a remote node, starting at the short_channel_id indicated by starting_point and
 212          * including the batch_amount entries immediately higher in numerical value than starting_point.
 213          */
 214         public ThreeTuple<ChannelAnnouncement, ChannelUpdate, ChannelUpdate>[] get_next_channel_announcements(long starting_point, byte batch_amount) {
 215                 long[] ret = bindings.RoutingMessageHandler_get_next_channel_announcements(this.ptr, starting_point, batch_amount);
 216                 ThreeTuple<ChannelAnnouncement, ChannelUpdate, ChannelUpdate>[] ret_conv_63_arr = new ThreeTuple[ret.length];
 217                 for (int l = 0; l < ret.length; l++) {
 218                         long ret_conv_63 = ret[l];
 219                         long ret_conv_63_a = bindings.LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ_get_a(ret_conv_63);
 220                         ChannelAnnouncement ret_conv_63_a_hu_conv = new ChannelAnnouncement(null, ret_conv_63_a);
 221                         ret_conv_63_a_hu_conv.ptrs_to.add(this);;
 222                         long ret_conv_63_b = bindings.LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ_get_b(ret_conv_63);
 223                         ChannelUpdate ret_conv_63_b_hu_conv = new ChannelUpdate(null, ret_conv_63_b);
 224                         ret_conv_63_b_hu_conv.ptrs_to.add(this);;
 225                         long ret_conv_63_c = bindings.LDKC3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ_get_c(ret_conv_63);
 226                         ChannelUpdate ret_conv_63_c_hu_conv = new ChannelUpdate(null, ret_conv_63_c);
 227                         ret_conv_63_c_hu_conv.ptrs_to.add(this);;
 228                         ThreeTuple<ChannelAnnouncement, ChannelUpdate, ChannelUpdate> ret_conv_63_conv = new ThreeTuple<ChannelAnnouncement, ChannelUpdate, ChannelUpdate>(ret_conv_63_a_hu_conv, ret_conv_63_b_hu_conv, ret_conv_63_c_hu_conv, () -> {
 229                                 bindings.C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZ_free(ret_conv_63);
 230                         });
 231                         ret_conv_63_a_hu_conv.ptrs_to.add(ret_conv_63_conv);
 232                         ret_conv_63_b_hu_conv.ptrs_to.add(ret_conv_63_conv);
 233                         ret_conv_63_c_hu_conv.ptrs_to.add(ret_conv_63_conv);
 234                         ret_conv_63_arr[l] = ret_conv_63_conv;
 235                 }
 236                 return ret_conv_63_arr;
 237         }
 238
 239         /**
 240          * Gets a subset of the node announcements required to dump our routing table to a remote node,
 241          * starting at the node *after* the provided publickey and including batch_amount entries
 242          * immediately higher (as defined by <PublicKey as Ord>::cmp) than starting_point.
 243          * If None is provided for starting_point, we start at the first node.
 244          *
 245          * Note that starting_point (or a relevant inner pointer) may be NULL or all-0s to represent None
 246          */
 247         public NodeAnnouncement[] get_next_node_announcements(@Nullable byte[] starting_point, byte batch_amount) {
 248                 long[] ret = bindings.RoutingMessageHandler_get_next_node_announcements(this.ptr, starting_point, batch_amount);
 249                 NodeAnnouncement[] ret_conv_18_arr = new NodeAnnouncement[ret.length];
 250                 for (int s = 0; s < ret.length; s++) {
 251                         long ret_conv_18 = ret[s];
 252                         NodeAnnouncement ret_conv_18_hu_conv = new NodeAnnouncement(null, ret_conv_18);
 253                         ret_conv_18_hu_conv.ptrs_to.add(this);
 254                         ret_conv_18_arr[s] = ret_conv_18_hu_conv;
 255                 }
 256                 return ret_conv_18_arr;
 257         }
 258
 259         /**
 260          * Called when a connection is established with a peer. This can be used to
 261          * perform routing table synchronization using a strategy defined by the
 262          * implementor.
 263          */
 264         public void sync_routing_table(byte[] their_node_id, Init init) {
 265                 bindings.RoutingMessageHandler_sync_routing_table(this.ptr, their_node_id, init == null ? 0 : init.ptr & ~1);
 266                 this.ptrs_to.add(init);
 267         }
 268
 269         /**
 270          * Handles the reply of a query we initiated to learn about channels
 271          * for a given range of blocks. We can expect to receive one or more
 272          * replies to a single query.
 273          */
 274         public Result_NoneLightningErrorZ handle_reply_channel_range(byte[] their_node_id, ReplyChannelRange msg) {
 275                 long ret = bindings.RoutingMessageHandler_handle_reply_channel_range(this.ptr, their_node_id, msg == null ? 0 : msg.ptr & ~1);
 276                 if (ret < 1024) { return null; }
 277                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 278                 this.ptrs_to.add(msg);
 279                 return ret_hu_conv;
 280         }
 281
 282         /**
 283          * Handles the reply of a query we initiated asking for routing gossip
 284          * messages for a list of channels. We should receive this message when
 285          * a node has completed its best effort to send us the pertaining routing
 286          * gossip messages.
 287          */
 288         public Result_NoneLightningErrorZ handle_reply_short_channel_ids_end(byte[] their_node_id, ReplyShortChannelIdsEnd msg) {
 289                 long ret = bindings.RoutingMessageHandler_handle_reply_short_channel_ids_end(this.ptr, their_node_id, msg == null ? 0 : msg.ptr & ~1);
 290                 if (ret < 1024) { return null; }
 291                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 292                 this.ptrs_to.add(msg);
 293                 return ret_hu_conv;
 294         }
 295
 296         /**
 297          * Handles when a peer asks us to send a list of short_channel_ids
 298          * for the requested range of blocks.
 299          */
 300         public Result_NoneLightningErrorZ handle_query_channel_range(byte[] their_node_id, QueryChannelRange msg) {
 301                 long ret = bindings.RoutingMessageHandler_handle_query_channel_range(this.ptr, their_node_id, msg == null ? 0 : msg.ptr & ~1);
 302                 if (ret < 1024) { return null; }
 303                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 304                 this.ptrs_to.add(msg);
 305                 return ret_hu_conv;
 306         }
 307
 308         /**
 309          * Handles when a peer asks us to send routing gossip messages for a
 310          * list of short_channel_ids.
 311          */
 312         public Result_NoneLightningErrorZ handle_query_short_channel_ids(byte[] their_node_id, QueryShortChannelIds msg) {
 313                 long ret = bindings.RoutingMessageHandler_handle_query_short_channel_ids(this.ptr, their_node_id, msg == null ? 0 : msg.ptr & ~1);
 314                 if (ret < 1024) { return null; }
 315                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 316                 this.ptrs_to.add(msg);
 317                 return ret_hu_conv;
 318         }
 319
 320 }