Start mock tx parsing

core/src/main/java/io/bitsquare/dao/tokens/MockTxService.java

@@ -0,0 +1,35 @@
+/*
+ * This file is part of Bitsquare.
+ *
+ * Bitsquare is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bitsquare is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bitsquare. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.bitsquare.dao.tokens;
+
+import java.util.HashMap;
+import java.util.Map;
+
+class MockTxService extends TxService {
+    private final Tx genesisTx;
+    private Map<String, Tx> txMap = new HashMap<>();
+
+    public MockTxService(Tx genesisTx) {
+        txMap.put(genesisTx.id, genesisTx);
+        this.genesisTx = genesisTx;
+    }
+
+    public Tx getTx(String txId) {
+        return txMap.get(txId);
+    }
+}

core/src/main/java/io/bitsquare/dao/tokens/TransactionParser.java

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+/*
+ * This file is part of Bitsquare.
+ *
+ * Bitsquare is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bitsquare is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bitsquare. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.bitsquare.dao.tokens;
+
+import com.google.inject.Inject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TransactionParser {
+    private static final Logger log = LoggerFactory.getLogger(TransactionParser.class);
+
+    private String genesisTxId = "83a4454747e5c972f2eb20d587538a330dd30b5cf468f8faea32eae640cebe79";
+    private TxService txService;
+
+    ///////////////////////////////////////////////////////////////////////////////////////////
+    // Constructor
+    ///////////////////////////////////////////////////////////////////////////////////////////
+
+    @Inject
+    public TransactionParser(String genesisTxId, TxService txService) {
+        this.genesisTxId = genesisTxId;
+        this.txService = txService;
+    }
+
+    public Tx getTx(String txId) {
+        return txService.getTx(txId);
+    }
+
+
+    public void start() {
+        Tx genesisTx = getTx(genesisTxId);
+        List<TxOutput> allUTXOs = findAllUTXOs(genesisTx);
+    }
+
+    public List<TxOutput> findAllUTXOs(Tx tx) {
+        List<TxOutput> allUTXOs = new ArrayList<>();
+        getOutputs(tx).stream().forEach(txOutput -> {
+            if (txOutput.isSpent) {
+                allUTXOs.addAll(findAllUTXOs(txOutput.spentByTxInput.parentTx));
+            } else if (isValidOutput(txOutput)) {
+                allUTXOs.add(txOutput);
+            } else {
+                log.warn("invalid output " + txOutput);
+            }
+        });
+
+        return allUTXOs;
+    }
+
+    public boolean isValidOutput(TxOutput output) {
+        output.parentTx.inputs.forEach(input -> {
+            if (isValidInput(input)) {
+
+            }
+        });
+        return true;
+    }
+
+    public boolean isValidInput(TxInput input) {
+        input.parentTx.outputs.forEach(output -> {
+
+        });
+        return true;
+    }
+
+    private List<TxOutput> getOutputs(Tx tx) {
+        return new ArrayList<>();
+    }
+
+
+}
+

core/src/main/java/io/bitsquare/dao/tokens/Tx.java

@@ -0,0 +1,70 @@
+/*
+ * This file is part of Bitsquare.
+ *
+ * Bitsquare is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bitsquare is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bitsquare. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.bitsquare.dao.tokens;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Tx {
+    public Tx(String id) {
+        this.id = id;
+    }
+
+    public Tx(String id, List<TxInput> inputs, List<TxOutput> outputs) {
+        this.id = id;
+        this.inputs = inputs;
+        this.outputs = outputs;
+    }
+
+    public String id;
+    public List<TxInput> inputs = new ArrayList<>();
+    public List<TxOutput> outputs = new ArrayList<>();
+
+    public void addOutput(TxOutput output) {
+        output.parentTx = this;
+        output.index = outputs.size();
+        outputs.add(output);
+    }
+
+    public void addInput(TxInput input) {
+        input.parentTx = this;
+        input.index = inputs.size();
+        inputs.add(input);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Tx tx = (Tx) o;
+
+        if (id != null ? !id.equals(tx.id) : tx.id != null) return false;
+        if (outputs != null ? !outputs.equals(tx.outputs) : tx.outputs != null) return false;
+        return !(inputs != null ? !inputs.equals(tx.inputs) : tx.inputs != null);
+
+    }
+
+    @Override
+    public int hashCode() {
+        int result = id != null ? id.hashCode() : 0;
+        result = 31 * result + (outputs != null ? outputs.hashCode() : 0);
+        result = 31 * result + (inputs != null ? inputs.hashCode() : 0);
+        return result;
+    }
+}

core/src/main/java/io/bitsquare/dao/tokens/TxInput.java

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+/*
+ * This file is part of Bitsquare.
+ *
+ * Bitsquare is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bitsquare is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bitsquare. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.bitsquare.dao.tokens;
+
+public class TxInput {
+    public TxInput(Tx parentTx, TxOutput output, long value) {
+        this.parentTx = parentTx;
+        this.output = output;
+        this.value = value;
+    }
+
+    public TxOutput output;
+    public Tx parentTx;
+    public long value;
+    public int index;
+    public boolean isValid;
+}

core/src/main/java/io/bitsquare/dao/tokens/TxOutput.java

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+/*
+ * This file is part of Bitsquare.
+ *
+ * Bitsquare is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bitsquare is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bitsquare. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.bitsquare.dao.tokens;
+
+public class TxOutput {
+    public TxOutput(String address, long value) {
+        this.address = address;
+        this.value = value;
+    }
+
+    public Tx parentTx;
+    public boolean isSpent;
+    public TxInput spentByTxInput;
+    public String address;
+    public long value;
+    public int index;
+    public boolean isValid;
+
+}

core/src/main/java/io/bitsquare/dao/tokens/TxService.java

@@ -0,0 +1,22 @@
+/*
+ * This file is part of Bitsquare.
+ *
+ * Bitsquare is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bitsquare is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bitsquare. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.bitsquare.dao.tokens;
+
+abstract class TxService {
+    abstract public Tx getTx(String txId);
+}

core/src/test/java/io/bitsquare/dao/tokens/TransactionParserTest.java

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+/*
+ * This file is part of Bitsquare.
+ *
+ * Bitsquare is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Bitsquare is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Bitsquare. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.bitsquare.dao.tokens;
+
+import org.bitcoinj.core.Coin;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class TransactionParserTest {
+    private Tx genesisTx;
+    private MockTxService txService;
+    private TransactionParser transactionParser;
+    private TxOutput output1;
+    private TxOutput output2;
+    private TxInput input1;
+
+    @Before
+    public void setup() {
+        genesisTx = getGenesisTx();
+        txService = new MockTxService(genesisTx);
+        transactionParser = new TransactionParser("123", txService);
+    }
+
+    @After
+    public void tearDown() {
+    }
+
+    @Test
+    public void testGetTx() {
+        Tx genesisTxResult = transactionParser.getTx("id_genesis");
+        assertEquals(genesisTx, genesisTxResult);
+    }
+
+    @Test
+    public void testTx1() {
+        Tx genesisTxResult = transactionParser.getTx("id_genesis");
+        assertEquals(genesisTx, genesisTxResult);
+    }
+
+    private Tx getGenesisTx() {
+        Tx tx = new Tx("id_genesis");
+
+        tx.addInput(new TxInput(new Tx("id_0001", null, null), null, Coin.COIN.value));
+
+        output1 = new TxOutput("addr_1", 1000);
+        tx.addOutput(output1);
+
+        output2 = new TxOutput("addr_2", 2000);
+        tx.addOutput(output2);
+
+        return tx;
+    }
+
+    private Tx getTx1() {
+        Tx tx = new Tx("id_tx1");
+
+        input1 = new TxInput(genesisTx, output1, Coin.COIN.value);
+        tx.addInput(input1);
+        
+        TxInput feeInput = new TxInput(new Tx("id_0001", null, null), null, 20_000);
+        Tx feeTx = new Tx("id_fee_1", null, null);
+
+        tx.addOutput(new TxOutput("addr_1", 1000));
+        tx.addOutput(new TxOutput("addr_2", 2000));
+        return tx;
+    }
+}