feat: other core 21 updates

core/src/main/java/org/bitcoinj/core/Peer.java

@@ -1501,7 +1501,7 @@ protected void processInv(InventoryMessage inv) {
         }
 
         // The New InstantSendLock (ISLOCK)
-        if(context.instantSendManager != null && context.instantSendManager.isNewInstantSendEnabled() &&
+        if(context.instantSendManager != null && context.instantSendManager.isInstantSendEnabled() &&
                 context.masternodeSync != null && context.masternodeSync.hasSyncFlag(MasternodeSync.SYNC_FLAGS.SYNC_INSTANTSENDLOCKS)) {
             it = instantSendLocks.iterator();
             while (it.hasNext()) {

core/src/main/java/org/bitcoinj/crypto/BLSAbstractLazyObject.java

@@ -21,7 +21,7 @@
 
 import java.io.IOException;
 import java.io.OutputStream;
-
+import java.util.Arrays;
 
 public abstract class BLSAbstractLazyObject extends Message {
 
@@ -59,4 +59,11 @@
     public boolean isInitialized() {
         return initialized;
     }
+
+    public abstract byte[] getBuffer();
+
+    @Override
+    public int hashCode() {
+        return Arrays.hashCode(getBuffer());
+    }
 }

core/src/main/java/org/bitcoinj/crypto/BLSLazyPublicKey.java

@@ -136,7 +136,7 @@
             if (that.isInitialized())
                 return Objects.equals(publicKey, that.publicKey);
             else
-                return Objects.equals(publicKey.getBuffer(), that.buffer);
+                return Arrays.equals(publicKey.getBuffer(), that.buffer);
         } else {
             if (that.isInitialized())
                 return Arrays.equals(buffer, that.publicKey.getBuffer());
@@ -157,4 +157,8 @@
             return buffer != null;
         }
     }
+
+    public byte [] getBuffer() {
+        return buffer != null ? buffer : publicKey.getBuffer();
+    }
 }

core/src/main/java/org/bitcoinj/crypto/BLSLazySignature.java

@@ -10,12 +10,13 @@
 
 import java.io.IOException;
 import java.io.OutputStream;
+import java.util.Arrays;
 import java.util.concurrent.locks.ReentrantLock;
 
 public class BLSLazySignature extends BLSAbstractLazyObject {
     ReentrantLock lock = Threading.lock("BLSLazySignature");
-    Logger log = LoggerFactory.getLogger(BLSLazySignature.class);
-    BLSSignature signature;
+    private static final Logger log = LoggerFactory.getLogger(BLSLazySignature.class);
+    private BLSSignature signature;
 
     @Deprecated
     public BLSLazySignature() {
@@ -80,6 +81,7 @@
         }
     }
 
+    @Deprecated
     public BLSLazySignature assign(BLSLazySignature blsLazySignature) {
         lock.lock();
         try {
@@ -135,7 +137,11 @@
 
     @Override
     public String toString() {
-        return initialized ? signature.toString() : (buffer == null ? invalidSignature.toString() : Utils.HEX.encode(buffer));
+        if (initialized) {
+            return signature.toString();
+        } else {
+            return buffer == null ? invalidSignature.toString() : Utils.HEX.encode(buffer);
+        }
     }
 
     public boolean isValid() {
@@ -145,4 +151,19 @@
             return buffer != null;
         }
     }
+
+    public byte [] getBuffer() {
+        return buffer != null ? buffer : signature.getBuffer();
+    }
+
+    @Override
+    public final boolean equals(Object o) {
+        if (this == o) return true;
+        if (!(o instanceof BLSLazySignature)) return false;
+
+        BLSLazySignature that = (BLSLazySignature) o;
+        byte[] thisBuffer = getBuffer();
+        byte[] thatBuffer = that.getBuffer();
+        return legacy == that.legacy && Arrays.equals(thisBuffer, thatBuffer);
+    }
 }

core/src/main/java/org/bitcoinj/evolution/AbstractDiffMessage.java

@@ -39,23 +39,21 @@
 public abstract class AbstractDiffMessage extends Message {
     private static final Logger log = LoggerFactory.getLogger(AbstractDiffMessage.class);
 
-    public AbstractDiffMessage(NetworkParameters params) {
+    protected AbstractDiffMessage(NetworkParameters params) {
         super(params);
     }
 
-    public AbstractDiffMessage(NetworkParameters params, byte [] payload, int offset, int protocolVersion) {
+    protected AbstractDiffMessage(NetworkParameters params, byte [] payload, int offset, int protocolVersion) {
         super(params, payload, offset, protocolVersion);
     }
 
     protected abstract String getShortName();
 
     public void dump(long startHeight, long endHeight) {
         if (!Utils.isAndroidRuntime() && Context.get().isDebugMode()) {
-            try {
-                File dumpFile = new File(getShortName() + "-" + params.getNetworkName() + "-" + startHeight + "-" + endHeight + ".dat");
-                OutputStream stream = new FileOutputStream(dumpFile);
+            File dumpFile = new File(getShortName() + "-" + params.getNetworkName() + "-" + startHeight + "-" + endHeight + ".dat");
+            try (OutputStream stream = new FileOutputStream(dumpFile)) {
                 stream.write(bitcoinSerialize());
-                stream.close();
                 log.info("dump successful");
             } catch (FileNotFoundException x) {
                 log.warn("could not dump {} - file not found.", getShortName(), x);

core/src/main/java/org/bitcoinj/evolution/AbstractQuorumRequest.java

@@ -28,15 +28,15 @@
 
 public abstract class AbstractQuorumRequest extends Message {
 
-    public AbstractQuorumRequest() {
+    protected AbstractQuorumRequest() {
         super();
     }
 
-    public AbstractQuorumRequest(NetworkParameters params) {
+    protected AbstractQuorumRequest(NetworkParameters params) {
         super(params);
     }
 
-    public AbstractQuorumRequest(NetworkParameters params, byte [] payload, int offset) {
+    protected AbstractQuorumRequest(NetworkParameters params, byte [] payload, int offset) {
         super(params, payload, offset);
     }
 

core/src/main/java/org/bitcoinj/evolution/AbstractQuorumState.java

@@ -47,6 +47,7 @@
 import org.bitcoinj.quorums.SimplifiedQuorumList;
 import org.bitcoinj.store.BlockStoreException;
 import org.bitcoinj.utils.ContextPropagatingThreadFactory;
+import org.bitcoinj.utils.DebugReentrantLock;
 import org.bitcoinj.utils.Threading;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -89,7 +90,8 @@
     public static final int MIN_CACHE_SIZE = 1;
 
     private static final Logger log = LoggerFactory.getLogger(AbstractQuorumState.class);
-    protected final ReentrantLock lock = Threading.lock("AbstractQuorumState");
+    // TODO: Revert to ReentrantLock with 21.0.1
+    protected final DebugReentrantLock lock = Threading.debugLock("AbstractQuorumState");
 
     Context context;
     DualBlockChain blockChain;
@@ -119,19 +121,19 @@
     String bootstrapFilePath = null;
     InputStream bootstrapStream = null;
     int bootStrapFileFormat = 0;
-    public SettableFuture<Boolean> bootStrapLoaded;
+    private SettableFuture<Boolean> bootStrapLoaded;
 
     boolean isLoadingBootstrap = false;
     protected static Random random = new Random();
 
-    public AbstractQuorumState(Context context) {
+    protected AbstractQuorumState(Context context) {
         super(context.getParams());
         this.context = context;
         initializeOnce();
         initialize();
     }
 
-    public AbstractQuorumState(NetworkParameters params, byte[] payload, int offset, int protocolVersion) {
+    protected AbstractQuorumState(NetworkParameters params, byte[] payload, int offset, int protocolVersion) {
         super(params, payload, offset, protocolVersion);
         initialize();
     }
@@ -200,6 +202,10 @@
         return failedAttempts > MAX_ATTEMPTS;
     }
 
+    public SettableFuture<Boolean> getBootStrapLoadedFuture() {
+        return bootStrapLoaded;
+    }
+
     abstract int getBlockHeightOffset();
 
     public abstract int getUpdateInterval();
@@ -218,6 +224,7 @@
     public abstract void requestUpdate(Peer peer, StoredBlock block);
 
     public void retryLastUpdate(Peer peer) {
+        log.info("retryLastUpdate: {}", lastRequest.getRequestMessage());
         if (peer != null) {
             peer.sendMessage(lastRequest.getRequestMessage());
         } else {
@@ -231,13 +238,13 @@
 
     public abstract SimplifiedMasternodeList getMasternodeListAtTip();
 
-    public abstract LinkedHashMap<Sha256Hash, SimplifiedMasternodeList> getMasternodeListCache();
+    public abstract Map<Sha256Hash, SimplifiedMasternodeList> getMasternodeListCache();
 
-    public abstract LinkedHashMap<Sha256Hash, SimplifiedQuorumList> getQuorumsCache();
+    public abstract Map<Sha256Hash, SimplifiedQuorumList> getQuorumsCache();
 
     public abstract SimplifiedQuorumList getQuorumListAtTip();
 
-    public abstract ArrayList<Masternode> getAllQuorumMembers(LLMQParameters.LLMQType llmqType, Sha256Hash blockHash);
+    public abstract List<Masternode> getAllQuorumMembers(LLMQParameters.LLMQType llmqType, Sha256Hash blockHash);
 
     public void resetMNList() {
         resetMNList(false, true);
@@ -405,7 +412,8 @@
                     log.info("sending {} from {} to {}; \n  From {}\n To {}", lastRequest.request.getClass().getSimpleName(),
                             getMasternodeListAtTip().getHeight(), nextBlock.getHeight(), getMasternodeListAtTip().getBlockHash(), nextBlock.getHeader().getHash());
                     requestUpdate(downloadPeer, nextBlock);
-                    log.info("message = {}", lastRequest.getRequestMessage().toString(blockChain));
+                    // This was causing a dead lock when using toString(DualBlockchain).  Use toString() instead.
+                    log.info("message = {}", lastRequest.getRequestMessage());
                     waitingForMNListDiff = true;
                     return true;
                 } else {
@@ -741,7 +749,7 @@
             try {
                 if (isLocked) {
                     downloadPeer = context.peerGroup.getDownloadPeer();
-                    log.info("{}: lock acquired, obtaining downloadPeer from peerGroup: {}",
+                    log.info("{}: peergroup lock acquired, obtaining downloadPeer from peerGroup: {}",
                             Thread.currentThread().getName(), downloadPeer);
                     if (downloadPeer == null) {
                         chooseRandomDownloadPeer();

core/src/main/java/org/bitcoinj/evolution/DeterministicMasternodeList.java

@@ -24,7 +24,7 @@
         this.blockHash = other.blockHash;
         this.height = other.height;
 
-        mnMap = new HashMap<Sha256Hash, DeterministicMasternode>(other.mnMap.size());
+        mnMap = new HashMap<>(other.mnMap.size());
         for(Map.Entry<Sha256Hash, DeterministicMasternode> entry : mnMap.entrySet()) {
             mnMap.put(entry.getKey(), new DeterministicMasternode(entry.getValue()));
         }
@@ -35,7 +35,7 @@
         blockHash = readHash();
         height = (int)readUint32();
         int size = (int)readVarInt();
-        mnMap = new HashMap<Sha256Hash, DeterministicMasternode>(size);
+        mnMap = new HashMap<>(size);
         for(int i = 0; i < size; ++i)
         {
             Sha256Hash hash = readHash();
@@ -45,13 +45,13 @@
         }
 
         size = (int)readVarInt();
-        mnUniquePropertyMap = new HashMap<Sha256Hash, Pair<Sha256Hash, Integer>>(size);
+        mnUniquePropertyMap = new HashMap<>(size);
         for(long i = 0; i < size; ++i)
         {
             Sha256Hash hash = readHash();
             Sha256Hash first = readHash();
             int second = (int)readUint32();
-            mnUniquePropertyMap.put(hash, new Pair<Sha256Hash, Integer>(first, second));
+            mnUniquePropertyMap.put(hash, new Pair<>(first, second));
         }
     }
 
@@ -158,7 +158,7 @@
         if (p.getSecond() == 1) {
             mnUniquePropertyMap.remove(oldHash);
         } else {
-            mnUniquePropertyMap.put(oldHash, new Pair<Sha256Hash, Integer>(dmn.proRegTxHash, p.getSecond() - 1));
+            mnUniquePropertyMap.put(oldHash, new Pair<>(dmn.proRegTxHash, p.getSecond() - 1));
         }
     }
     @Deprecated

core/src/main/java/org/bitcoinj/evolution/GetSimplifiedMasternodeListDiff.java

@@ -14,7 +14,7 @@ public class GetSimplifiedMasternodeListDiff extends AbstractQuorumRequest {
     Sha256Hash baseBlockHash;
     Sha256Hash blockHash;
 
-    public static int MESSAGE_SIZE = 64;
+    public static final int MESSAGE_SIZE = 64;
 
     public GetSimplifiedMasternodeListDiff(Sha256Hash baseBlockHash, Sha256Hash blockHash) {
         super();

core/src/main/java/org/bitcoinj/evolution/MasternodeListDiffException.java

@@ -1,11 +1,11 @@
 package org.bitcoinj.evolution;
 
 public class MasternodeListDiffException extends Exception {
-    boolean requireReset;
-    boolean findNewPeer;
+    private final boolean requireReset;
+    private final boolean findNewPeer;
 
-    boolean sameHeight;
-    boolean merkleRootMismatch;
+    private final boolean sameHeight;
+    private final boolean merkleRootMismatch;
     public MasternodeListDiffException(String message, boolean requireReset, boolean findNewPeer, boolean sameHeight, boolean merkleRootMismatch) {
         super(message);
         this.requireReset = requireReset;
@@ -25,4 +25,8 @@
     public boolean hasMerkleRootMismatch() {
         return merkleRootMismatch;
     }
+
+    public boolean isSameHeight() {
+        return sameHeight;
+    }
 }

core/src/main/java/org/bitcoinj/evolution/MasternodeMetaDataManager.java

@@ -1,9 +1,9 @@
 package org.bitcoinj.evolution;
 
 import org.bitcoinj.core.*;
-import org.bitcoinj.governance.GovernanceObject;
 
 import java.util.ArrayList;
+import java.util.List;
 
 public class MasternodeMetaDataManager extends AbstractManager {
 
@@ -19,8 +19,8 @@
 
     }
 
-    public ArrayList<Sha256Hash> getAndClearDirtyGovernanceObjectHashes() {
-        return new ArrayList<Sha256Hash>();
+    public List<Sha256Hash> getAndClearDirtyGovernanceObjectHashes() {
+        return new ArrayList<>();
     }
 
     @Override