X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Fmain%2Fjava%2Forg%2Fldk%2Fstructs%2FFeeEstimator.java;h=ffb05837bae6d058377e63d6e5744f8898f95f44;hb=ffdd56c967087cba7548599934585b8a9a3102e2;hp=3959317b497cbd7b0faef208fa97507b621cd5f2;hpb=3d559f3266fde7c6a21248c10d9a7145125b5e69;p=ldk-java

diff --git a/src/main/java/org/ldk/structs/FeeEstimator.java b/src/main/java/org/ldk/structs/FeeEstimator.java
index 3959317b..ffb05837 100644
--- a/src/main/java/org/ldk/structs/FeeEstimator.java
+++ b/src/main/java/org/ldk/structs/FeeEstimator.java
@@ -1,16 +1,94 @@
 package org.ldk.structs;
 
 import org.ldk.impl.bindings;
+import org.ldk.enums.*;
+import org.ldk.util.*;
+import java.util.Arrays;
+import java.lang.ref.Reference;
+import javax.annotation.Nullable;
 
+/**
+ * A trait which should be implemented to provide feerate information on a number of time
+ * horizons.
+ * 
+ * If access to a local mempool is not feasible, feerate estimates should be fetched from a set of
+ * third-parties hosting them. Note that this enables them to affect the propagation of your
+ * pre-signed transactions at any time and therefore endangers the safety of channels funds. It
+ * should be considered carefully as a deployment.
+ * 
+ * Note that all of the functions implemented here *must* be reentrant-safe (obviously - they're
+ * called from inside the library in response to chain events, P2P events, or timer events).
+ * 
+ * LDK may generate a substantial number of fee-estimation calls in some cases. You should
+ * pre-calculate and cache the fee estimate results to ensure you don't substantially slow HTLC
+ * handling.
+ */
+@SuppressWarnings("unchecked") // We correctly assign various generic arrays
 public class FeeEstimator extends CommonBase {
-	FeeEstimator(Object _dummy, long ptr) { super(ptr); }
-	public FeeEstimator(bindings.LDKFeeEstimator arg) {
+	final bindings.LDKFeeEstimator bindings_instance;
+	FeeEstimator(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
+	private FeeEstimator(bindings.LDKFeeEstimator arg) {
 		super(bindings.LDKFeeEstimator_new(arg));
 		this.ptrs_to.add(arg);
+		this.bindings_instance = arg;
 	}
 	@Override @SuppressWarnings("deprecation")
 	protected void finalize() throws Throwable {
-		bindings.FeeEstimator_free(ptr); super.finalize();
+		if (ptr != 0) { bindings.FeeEstimator_free(ptr); } super.finalize();
+	}
+	/**
+	 * Destroys the object, freeing associated resources. After this call, any access
+	 * to this object may result in a SEGFAULT or worse.
+	 *
+	 * You should generally NEVER call this method. You should let the garbage collector
+	 * do this for you when it finalizes objects. However, it may be useful for types
+	 * which represent locks and should be closed immediately to avoid holding locks
+	 * until the GC runs.
+	 */
+	public void destroy() {
+		if (ptr != 0) { bindings.FeeEstimator_free(ptr); }
+		ptr = 0;
+	}
+	public static interface FeeEstimatorInterface {
+		/**
+		 * Gets estimated satoshis of fee required per 1000 Weight-Units.
+		 * 
+		 * LDK will wrap this method and ensure that the value returned is no smaller than 253
+		 * (ie 1 satoshi-per-byte rounded up to ensure later round-downs don't put us below 1 satoshi-per-byte).
+		 * 
+		 * The following unit conversions can be used to convert to sats/KW:
+		 * satoshis-per-byte * 250
+		 * satoshis-per-kbyte / 4
+		 */
+		int get_est_sat_per_1000_weight(ConfirmationTarget confirmation_target);
+	}
+	private static class LDKFeeEstimatorHolder { FeeEstimator held; }
+	public static FeeEstimator new_impl(FeeEstimatorInterface arg) {
+		final LDKFeeEstimatorHolder impl_holder = new LDKFeeEstimatorHolder();
+		impl_holder.held = new FeeEstimator(new bindings.LDKFeeEstimator() {
+			@Override public int get_est_sat_per_1000_weight(ConfirmationTarget confirmation_target) {
+				int ret = arg.get_est_sat_per_1000_weight(confirmation_target);
+				Reference.reachabilityFence(arg);
+				return ret;
+			}
+		});
+		return impl_holder.held;
+	}
+	/**
+	 * Gets estimated satoshis of fee required per 1000 Weight-Units.
+	 * 
+	 * LDK will wrap this method and ensure that the value returned is no smaller than 253
+	 * (ie 1 satoshi-per-byte rounded up to ensure later round-downs don't put us below 1 satoshi-per-byte).
+	 * 
+	 * The following unit conversions can be used to convert to sats/KW:
+	 * satoshis-per-byte * 250
+	 * satoshis-per-kbyte / 4
+	 */
+	public int get_est_sat_per_1000_weight(org.ldk.enums.ConfirmationTarget confirmation_target) {
+		int ret = bindings.FeeEstimator_get_est_sat_per_1000_weight(this.ptr, confirmation_target);
+		Reference.reachabilityFence(this);
+		Reference.reachabilityFence(confirmation_target);
+		return ret;
 	}
 
 }