Merge pull request #240 from braydonf/gettxoutsetinfo

Add binding for getting transaction output set information.

integration/regtest.js

@@ -410,4 +410,24 @@ describe('Daemon Binding Functionality', function() {
     });
   });
 
+  describe('get transaction output set information', function() {
+    var bestblock;
+    it('will get the correct info', function() {
+      var info = bitcoind.getTxOutSetInfo();
+      info.bestblock.should.be.a('string');
+      bestblock = info.bestblock;
+      info.bestblock.length.should.equal(64);
+      info.bytes_serialized.should.equal(10431);
+      info.hash_serialized.should.be.a('string');
+      info.hash_serialized.length.should.equal(64);
+      info.height.should.equal(151);
+      info.total_amount.should.equal(750000000000);
+      info.transactions.should.equal(151);
+      info.txouts.should.equal(151);
+    });
+    it('will get the best block hash', function() {
+      var best = bitcoind.getBestBlockHash();
+      best.should.equal(bestblock);
+    });
+  });
 });

lib/services/bitcoind.js

@@ -224,6 +224,14 @@ Bitcoin.prototype.addMempoolUncheckedTransaction = function(txBuffer) {
   return bindings.addMempoolUncheckedTransaction(txBuffer);
 };
 
+Bitcoin.prototype.getBestBlockHash = function() {
+  return bindings.getBestBlockHash();
+};
+
+Bitcoin.prototype.getTxOutSetInfo = function() {
+  return bindings.getTxOutSetInfo();
+};
+
 Bitcoin.prototype.getInfo = function() {
   return bindings.getInfo();
 };

src/libbitcoind.cc

@@ -203,6 +203,39 @@ NAN_METHOD(SyncPercentage) {
   NanReturnValue(NanNew<Number>(progress * 100));
 };
 
+NAN_METHOD(GetTxOutSetInfo) {
+  Isolate* isolate = args.GetIsolate();
+  HandleScope scope(isolate);
+  {
+
+    LOCK(cs_main);
+
+    CCoinsStats stats;
+    FlushStateToDisk();
+    if (pcoinsTip->GetStats(stats)) {
+      Local<Object> obj = NanNew<Object>();
+      obj->Set(NanNew<String>("height"), NanNew<Number>((int64_t)stats.nHeight));
+      obj->Set(NanNew<String>("bestblock"), NanNew<String>(stats.hashBlock.GetHex()));
+      obj->Set(NanNew<String>("transactions"), NanNew<Number>((int64_t)stats.nTransactions));
+      obj->Set(NanNew<String>("txouts"), NanNew<Number>((int64_t)stats.nTransactionOutputs));
+      obj->Set(NanNew<String>("bytes_serialized"), NanNew<Number>((int64_t)stats.nSerializedSize));
+      obj->Set(NanNew<String>("hash_serialized"), NanNew<String>(stats.hashSerialized.GetHex()));
+      obj->Set(NanNew<String>("total_amount"), NanNew<Number>(stats.nTotalAmount));
+      NanReturnValue(obj);
+    }
+  }
+
+  NanReturnValue(NanNull());
+
+};
+
+NAN_METHOD(GetBestBlockHash) {
+  {
+    LOCK(cs_main);
+    NanReturnValue(NanNew<String>(chainActive.Tip()->GetBlockHash().GetHex()));
+  }
+}
+
 /**
  * IsSynced()
  * bitcoind.isSynced()
@@ -1629,6 +1662,8 @@ init(Handle<Object> target) {
   NODE_SET_METHOD(target, "startTxMon", StartTxMon);
   NODE_SET_METHOD(target, "syncPercentage", SyncPercentage);
   NODE_SET_METHOD(target, "isSynced", IsSynced);
+  NODE_SET_METHOD(target, "getTxOutSetInfo", GetTxOutSetInfo);
+  NODE_SET_METHOD(target, "getBestBlockHash", GetBestBlockHash);
 
 }
 

src/libbitcoind.h

@@ -36,3 +36,5 @@ NAN_METHOD(EstimateFee);
 NAN_METHOD(StartTxMon);
 NAN_METHOD(SyncPercentage);
 NAN_METHOD(IsSynced);
+NAN_METHOD(GetTxOutSetInfo);
+NAN_METHOD(GetBestBlockHash);

test/services/bitcoind.unit.js

@@ -408,6 +408,8 @@ describe('Bitcoin Service', function() {
       ['getTransactionWithBlockInfo', 3],
       ['getMempoolTransactions', 0],
       ['addMempoolUncheckedTransaction', 1],
+      ['getTxOutSetInfo', 0],
+      ['getBestBlockHash', 0],
       ['getInfo', 0]
     ];