_ Git - ldk-java/blob - src/main/java/org/ldk/structs/Score.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  * An interface used to score payment channels for path finding.
  11  *
  12  * \tScoring is in terms of fees willing to be paid in order to avoid routing through a channel.
  13  */
  14 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  15 public class Score extends CommonBase {
  16         final bindings.LDKScore bindings_instance;
  17         Score(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
  18         private Score(bindings.LDKScore arg) {
  19                 super(bindings.LDKScore_new(arg));
  20                 this.ptrs_to.add(arg);
  21                 this.bindings_instance = arg;
  22         }
  23         @Override @SuppressWarnings("deprecation")
  24         protected void finalize() throws Throwable {
  25                 if (ptr != 0) { bindings.Score_free(ptr); } super.finalize();
  26         }
  27
  28         public static interface ScoreInterface {
  29                 /**
  30                  * Returns the fee in msats willing to be paid to avoid routing through the given channel
  31                  * in the direction from `source` to `target`.
  32                  */
  33                 long channel_penalty_msat(long short_channel_id, NodeId source, NodeId target);
  34                 /**
  35                  * Handles updating channel penalties after failing to route through a channel.
  36                  */
  37                 void payment_path_failed(RouteHop[] path, long short_channel_id);
  38                 /**
  39                  * Serialize the object into a byte array
  40                  */
  41                 byte[] write();
  42         }
  43         private static class LDKScoreHolder { Score held; }
  44         public static Score new_impl(ScoreInterface arg) {
  45                 final LDKScoreHolder impl_holder = new LDKScoreHolder();
  46                 impl_holder.held = new Score(new bindings.LDKScore() {
  47                         @Override public long channel_penalty_msat(long short_channel_id, long source, long target) {
  48                                 NodeId source_hu_conv = null; if (source < 0 || source > 4096) { source_hu_conv = new NodeId(null, source); }
  49                                 NodeId target_hu_conv = null; if (target < 0 || target > 4096) { target_hu_conv = new NodeId(null, target); }
  50                                 long ret = arg.channel_penalty_msat(short_channel_id, source_hu_conv, target_hu_conv);
  51                                 return ret;
  52                         }
  53                         @Override public void payment_path_failed(long[] path, long short_channel_id) {
  54                                 RouteHop[] path_conv_10_arr = new RouteHop[path.length];
  55                                 for (int k = 0; k < path.length; k++) {
  56                                         long path_conv_10 = path[k];
  57                                         RouteHop path_conv_10_hu_conv = null; if (path_conv_10 < 0 || path_conv_10 > 4096) { path_conv_10_hu_conv = new RouteHop(null, path_conv_10); }
  58                                         path_conv_10_hu_conv.ptrs_to.add(this);
  59                                         path_conv_10_arr[k] = path_conv_10_hu_conv;
  60                                 }
  61                                 arg.payment_path_failed(path_conv_10_arr, short_channel_id);
  62                         }
  63                         @Override public byte[] write() {
  64                                 byte[] ret = arg.write();
  65                                 return ret;
  66                         }
  67                 });
  68                 return impl_holder.held;
  69         }
  70         /**
  71          * Returns the fee in msats willing to be paid to avoid routing through the given channel
  72          * in the direction from `source` to `target`.
  73          */
  74         public long channel_penalty_msat(long short_channel_id, NodeId source, NodeId target) {
  75                 long ret = bindings.Score_channel_penalty_msat(this.ptr, short_channel_id, source == null ? 0 : source.ptr & ~1, target == null ? 0 : target.ptr & ~1);
  76                 this.ptrs_to.add(source);
  77                 this.ptrs_to.add(target);
  78                 return ret;
  79         }
  80
  81         /**
  82          * Handles updating channel penalties after failing to route through a channel.
  83          */
  84         public void payment_path_failed(RouteHop[] path, long short_channel_id) {
  85                 bindings.Score_payment_path_failed(this.ptr, path != null ? Arrays.stream(path).mapToLong(path_conv_10 -> path_conv_10 == null ? 0 : path_conv_10.ptr & ~1).toArray() : null, short_channel_id);
  86         }
  87
  88         /**
  89          * Serialize the object into a byte array
  90          */
  91         public byte[] write() {
  92                 byte[] ret = bindings.Score_write(this.ptr);
  93                 return ret;
  94         }
  95
  96 }