_ 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 java.lang.ref.Reference;
   8 import javax.annotation.Nullable;
   9
  10 /**
  11  * An interface used to score payment channels for path finding.
  12  *
  13  * \tScoring is in terms of fees willing to be paid in order to avoid routing through a channel.
  14  */
  15 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  16 public class Score extends CommonBase {
  17         final bindings.LDKScore bindings_instance;
  18         Score(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
  19         private Score(bindings.LDKScore arg) {
  20                 super(bindings.LDKScore_new(arg));
  21                 this.ptrs_to.add(arg);
  22                 this.bindings_instance = arg;
  23         }
  24         @Override @SuppressWarnings("deprecation")
  25         protected void finalize() throws Throwable {
  26                 if (ptr != 0) { bindings.Score_free(ptr); } super.finalize();
  27         }
  28
  29         public static interface ScoreInterface {
  30                 /**
  31                  * Returns the fee in msats willing to be paid to avoid routing `send_amt_msat` through the
  32                  * given channel in the direction from `source` to `target`.
  33                  *
  34                  * The channel's capacity (less any other MPP parts that are also being considered for use in
  35                  * the same payment) is given by `capacity_msat`. It may be determined from various sources
  36                  * such as a chain data, network gossip, or invoice hints. For invoice hints, a capacity near
  37                  * [`u64::max_value`] is given to indicate sufficient capacity for the invoice's full amount.
  38                  * Thus, implementations should be overflow-safe.
  39                  */
  40                 long channel_penalty_msat(long short_channel_id, NodeId source, NodeId target, ChannelUsage usage);
  41                 /**
  42                  * Handles updating channel penalties after failing to route through a channel.
  43                  */
  44                 void payment_path_failed(RouteHop[] path, long short_channel_id);
  45                 /**
  46                  * Handles updating channel penalties after successfully routing along a path.
  47                  */
  48                 void payment_path_successful(RouteHop[] path);
  49                 /**
  50                  * Serialize the object into a byte array
  51                  */
  52                 byte[] write();
  53         }
  54         private static class LDKScoreHolder { Score held; }
  55         public static Score new_impl(ScoreInterface arg) {
  56                 final LDKScoreHolder impl_holder = new LDKScoreHolder();
  57                 impl_holder.held = new Score(new bindings.LDKScore() {
  58                         @Override public long channel_penalty_msat(long short_channel_id, long source, long target, long usage) {
  59                                 org.ldk.structs.NodeId source_hu_conv = null; if (source < 0 || source > 4096) { source_hu_conv = new org.ldk.structs.NodeId(null, source); }
  60                                 org.ldk.structs.NodeId target_hu_conv = null; if (target < 0 || target > 4096) { target_hu_conv = new org.ldk.structs.NodeId(null, target); }
  61                                 org.ldk.structs.ChannelUsage usage_hu_conv = null; if (usage < 0 || usage > 4096) { usage_hu_conv = new org.ldk.structs.ChannelUsage(null, usage); }
  62                                 usage_hu_conv.ptrs_to.add(this);
  63                                 long ret = arg.channel_penalty_msat(short_channel_id, source_hu_conv, target_hu_conv, usage_hu_conv);
  64                                 Reference.reachabilityFence(arg);
  65                                 return ret;
  66                         }
  67                         @Override public void payment_path_failed(long[] path, long short_channel_id) {
  68                                 int path_conv_10_len = path.length;
  69                                 RouteHop[] path_conv_10_arr = new RouteHop[path_conv_10_len];
  70                                 for (int k = 0; k < path_conv_10_len; k++) {
  71                                         long path_conv_10 = path[k];
  72                                         org.ldk.structs.RouteHop path_conv_10_hu_conv = null; if (path_conv_10 < 0 || path_conv_10 > 4096) { path_conv_10_hu_conv = new org.ldk.structs.RouteHop(null, path_conv_10); }
  73                                         path_conv_10_hu_conv.ptrs_to.add(this);
  74                                         path_conv_10_arr[k] = path_conv_10_hu_conv;
  75                                 }
  76                                 arg.payment_path_failed(path_conv_10_arr, short_channel_id);
  77                                 Reference.reachabilityFence(arg);
  78                         }
  79                         @Override public void payment_path_successful(long[] path) {
  80                                 int path_conv_10_len = path.length;
  81                                 RouteHop[] path_conv_10_arr = new RouteHop[path_conv_10_len];
  82                                 for (int k = 0; k < path_conv_10_len; k++) {
  83                                         long path_conv_10 = path[k];
  84                                         org.ldk.structs.RouteHop path_conv_10_hu_conv = null; if (path_conv_10 < 0 || path_conv_10 > 4096) { path_conv_10_hu_conv = new org.ldk.structs.RouteHop(null, path_conv_10); }
  85                                         path_conv_10_hu_conv.ptrs_to.add(this);
  86                                         path_conv_10_arr[k] = path_conv_10_hu_conv;
  87                                 }
  88                                 arg.payment_path_successful(path_conv_10_arr);
  89                                 Reference.reachabilityFence(arg);
  90                         }
  91                         @Override public byte[] write() {
  92                                 byte[] ret = arg.write();
  93                                 Reference.reachabilityFence(arg);
  94                                 return ret;
  95                         }
  96                 });
  97                 return impl_holder.held;
  98         }
  99         /**
 100          * Returns the fee in msats willing to be paid to avoid routing `send_amt_msat` through the
 101          * given channel in the direction from `source` to `target`.
 102          *
 103          * The channel's capacity (less any other MPP parts that are also being considered for use in
 104          * the same payment) is given by `capacity_msat`. It may be determined from various sources
 105          * such as a chain data, network gossip, or invoice hints. For invoice hints, a capacity near
 106          * [`u64::max_value`] is given to indicate sufficient capacity for the invoice's full amount.
 107          * Thus, implementations should be overflow-safe.
 108          */
 109         public long channel_penalty_msat(long short_channel_id, NodeId source, NodeId target, ChannelUsage usage) {
 110                 long ret = bindings.Score_channel_penalty_msat(this.ptr, short_channel_id, source == null ? 0 : source.ptr & ~1, target == null ? 0 : target.ptr & ~1, usage == null ? 0 : usage.ptr & ~1);
 111                 Reference.reachabilityFence(this);
 112                 Reference.reachabilityFence(short_channel_id);
 113                 Reference.reachabilityFence(source);
 114                 Reference.reachabilityFence(target);
 115                 Reference.reachabilityFence(usage);
 116                 this.ptrs_to.add(source);
 117                 this.ptrs_to.add(target);
 118                 return ret;
 119         }
 120
 121         /**
 122          * Handles updating channel penalties after failing to route through a channel.
 123          */
 124         public void payment_path_failed(RouteHop[] path, long short_channel_id) {
 125                 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);
 126                 Reference.reachabilityFence(this);
 127                 Reference.reachabilityFence(path);
 128                 Reference.reachabilityFence(short_channel_id);
 129         }
 130
 131         /**
 132          * Handles updating channel penalties after successfully routing along a path.
 133          */
 134         public void payment_path_successful(RouteHop[] path) {
 135                 bindings.Score_payment_path_successful(this.ptr, path != null ? Arrays.stream(path).mapToLong(path_conv_10 -> path_conv_10 == null ? 0 : path_conv_10.ptr & ~1).toArray() : null);
 136                 Reference.reachabilityFence(this);
 137                 Reference.reachabilityFence(path);
 138         }
 139
 140         /**
 141          * Serialize the object into a byte array
 142          */
 143         public byte[] write() {
 144                 byte[] ret = bindings.Score_write(this.ptr);
 145                 Reference.reachabilityFence(this);
 146                 return ret;
 147         }
 148
 149 }