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Make UTXO serializable

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This commit is contained in:
Oscar Guindzberg
2016-08-24 15:42:00 -03:00
committed by Andreas Schildbach
parent cbe57555b2
commit 0566917a8f
2 changed files with 94 additions and 33 deletions
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81
core/src/main/java/org/bitcoinj/core/UTXO.java
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@@ -30,7 +30,9 @@ import java.util.Locale;
* It avoids having to store the entire parentTransaction just to get the hash and index.
* Useful when working with free standing outputs.
*/
public class UTXO {
public class UTXO implements Serializable {
private static final long serialVersionUID = 4736241649298988166L;
private Coin value;
private Script script;
@@ -86,38 +88,7 @@ public class UTXO {
}
public UTXO(InputStream in) throws IOException {
byte[] valueBytes = new byte[8];
if (in.read(valueBytes, 0, 8) != 8)
throw new EOFException();
value = Coin.valueOf(Utils.readInt64(valueBytes, 0));
int scriptBytesLength = ((in.read() & 0xFF)) |
((in.read() & 0xFF) << 8) |
((in.read() & 0xFF) << 16) |
((in.read() & 0xFF) << 24);
byte[] scriptBytes = new byte[scriptBytesLength];
if (in.read(scriptBytes) != scriptBytesLength)
throw new EOFException();
script = new Script(scriptBytes);
byte[] hashBytes = new byte[32];
if (in.read(hashBytes) != 32)
throw new EOFException();
hash = Sha256Hash.wrap(hashBytes);
byte[] indexBytes = new byte[4];
if (in.read(indexBytes) != 4)
throw new EOFException();
index = Utils.readUint32(indexBytes, 0);
height = ((in.read() & 0xFF)) |
((in.read() & 0xFF) << 8) |
((in.read() & 0xFF) << 16) |
((in.read() & 0xFF) << 24);
byte[] coinbaseByte = new byte[1];
in.read(coinbaseByte);
coinbase = coinbaseByte[0] == 1;
deserializeFromStream(in);
}
/** The value which this Transaction output holds. */
@@ -193,4 +164,48 @@ public class UTXO {
bos.write(new byte[] { (byte)(coinbase ? 1 : 0) });
}
public void deserializeFromStream(InputStream in) throws IOException {
byte[] valueBytes = new byte[8];
if (in.read(valueBytes, 0, 8) != 8)
throw new EOFException();
value = Coin.valueOf(Utils.readInt64(valueBytes, 0));
int scriptBytesLength = ((in.read() & 0xFF)) |
((in.read() & 0xFF) << 8) |
((in.read() & 0xFF) << 16) |
((in.read() & 0xFF) << 24);
byte[] scriptBytes = new byte[scriptBytesLength];
if (in.read(scriptBytes) != scriptBytesLength)
throw new EOFException();
script = new Script(scriptBytes);
byte[] hashBytes = new byte[32];
if (in.read(hashBytes) != 32)
throw new EOFException();
hash = Sha256Hash.wrap(hashBytes);
byte[] indexBytes = new byte[4];
if (in.read(indexBytes) != 4)
throw new EOFException();
index = Utils.readUint32(indexBytes, 0);
height = ((in.read() & 0xFF)) |
((in.read() & 0xFF) << 8) |
((in.read() & 0xFF) << 16) |
((in.read() & 0xFF) << 24);
byte[] coinbaseByte = new byte[1];
in.read(coinbaseByte);
coinbase = coinbaseByte[0] == 1;
}
private void writeObject(ObjectOutputStream o) throws IOException {
serializeToStream(o);
}
private void readObject(ObjectInputStream o) throws IOException, ClassNotFoundException {
deserializeFromStream(o);
}
}

46
core/src/test/java/org/bitcoinj/core/UTXOTest.java Normal file
View File

@@ -0,0 +1,46 @@
/*
* Copyright 2011 Google Inc.
* Copyright 2014 Andreas Schildbach
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.bitcoinj.core;
import static org.junit.Assert.assertEquals;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import org.bitcoinj.script.ScriptBuilder;
import org.junit.Test;
public class UTXOTest {
@Test
public void testJavaSerialization() throws Exception {
ECKey key = new ECKey();
UTXO utxo = new UTXO(Sha256Hash.of(new byte[]{1,2,3}), 1, Coin.COIN, 10, true, ScriptBuilder.createOutputScript(key));
ByteArrayOutputStream os = new ByteArrayOutputStream();
new ObjectOutputStream(os).writeObject(utxo);
UTXO utxoCopy = (UTXO) new ObjectInputStream(
new ByteArrayInputStream(os.toByteArray())).readObject();
assertEquals(utxo, utxoCopy);
assertEquals(utxo.getValue(), utxoCopy.getValue());
assertEquals(utxo.getHeight(), utxoCopy.getHeight());
assertEquals(utxo.isCoinbase(), utxoCopy.isCoinbase());
assertEquals(utxo.getScript(), utxoCopy.getScript());
}
}