_ Git - ldk-java/blob - src/main/java/org/ldk/structs/Listen.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
   8 /**
   9  * The `Listen` trait is used to be notified of when blocks have been connected or disconnected
  10  * from the chain.
  11  *
  12  * Useful when needing to replay chain data upon startup or as new chain events occur.
  13  */
  14 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  15 public class Listen extends CommonBase {
  16         final bindings.LDKListen bindings_instance;
  17         Listen(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
  18         private Listen(bindings.LDKListen arg) {
  19                 super(bindings.LDKListen_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.Listen_free(ptr); } super.finalize();
  26         }
  27
  28         public static interface ListenInterface {
  29                 /**
  30                  * Notifies the listener that a block was added at the given height.
  31                  */
  32                 void block_connected(byte[] block, int height);
  33                 /**
  34                  * Notifies the listener that a block was removed at the given height.
  35                  */
  36                 void block_disconnected(byte[] header, int height);
  37         }
  38         private static class LDKListenHolder { Listen held; }
  39         public static Listen new_impl(ListenInterface arg) {
  40                 final LDKListenHolder impl_holder = new LDKListenHolder();
  41                 impl_holder.held = new Listen(new bindings.LDKListen() {
  42                         @Override public void block_connected(byte[] block, int height) {
  43                                 arg.block_connected(block, height);
  44                         }
  45                         @Override public void block_disconnected(byte[] header, int height) {
  46                                 arg.block_disconnected(header, height);
  47                         }
  48                 });
  49                 return impl_holder.held;
  50         }
  51         /**
  52          * Notifies the listener that a block was added at the given height.
  53          */
  54         public void block_connected(byte[] block, int height) {
  55                 bindings.Listen_block_connected(this.ptr, block, height);
  56         }
  57
  58         /**
  59          * Notifies the listener that a block was removed at the given height.
  60          */
  61         public void block_disconnected(byte[] header, int height) {
  62                 bindings.Listen_block_disconnected(this.ptr, header, height);
  63         }
  64
  65 }