LevelDb fully pruned block store.

core/src/test/java/org/bitcoinj/core/LevelDbFullPrunedBlockChainTest.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2016 Robin Owens
+ *
+ * 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 org.bitcoinj.store.BlockStoreException;
+import org.bitcoinj.store.FullPrunedBlockStore;
+import org.bitcoinj.store.H2FullPrunedBlockStore;
+import org.bitcoinj.store.LevelDbFullPrunedBlockStore;
+import org.junit.After;
+
+import java.io.File;
+
+/**
+ * An H2 implementation of the FullPrunedBlockStoreTest
+ */
+public class LevelDbFullPrunedBlockChainTest extends
+        AbstractFullPrunedBlockChainTest {
+    @After
+    public void tearDown() throws Exception {
+        deleteFiles();
+    }
+
+    @Override
+    public FullPrunedBlockStore createStore(NetworkParameters params,
+            int blockCount) throws BlockStoreException {
+        deleteFiles();
+        return new LevelDbFullPrunedBlockStore(params, "test-leveldb",
+                blockCount);
+    }
+
+    private void deleteFiles() {
+        File f = new File("test-leveldb");
+        if (f != null && f.exists()) {
+            for (File c : f.listFiles())
+                c.delete();
+        }
+    }
+
+    @Override
+    public void resetStore(FullPrunedBlockStore store)
+            throws BlockStoreException {
+        ((LevelDbFullPrunedBlockStore) store).resetStore();
+    }
+}

examples/pom.xml

@@ -46,5 +46,11 @@
             <artifactId>h2</artifactId>
             <version>1.3.167</version>
         </dependency>
+        <dependency>
+            <groupId>org.fusesource.leveldbjni</groupId>
+            <artifactId>leveldbjni-all</artifactId>
+            <version>1.8</version>
+            <optional>true</optional>
+        </dependency>
     </dependencies>
 </project>

examples/src/main/java/org/bitcoinj/examples/LevelDb.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2016 Robin Owens
+ *
+ * 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.examples;
+
+import java.net.InetAddress;
+import org.bitcoinj.core.FullPrunedBlockChain;
+import org.bitcoinj.core.PeerGroup;
+import org.bitcoinj.params.MainNetParams;
+import org.bitcoinj.store.FullPrunedBlockStore;
+import org.bitcoinj.store.LevelDbFullPrunedBlockStore;
+
+public class LevelDb {
+    public static void main(String[] args) throws Exception {
+        /*
+         * This is just a test runner that will download blockchain till block
+         * 390000 then exit.
+         */
+        FullPrunedBlockStore store = new LevelDbFullPrunedBlockStore(
+                MainNetParams.get(), args[0], 1000, 100 * 1024 * 1024l,
+                10 * 1024 * 1024, 100000, true, 390000);
+
+        FullPrunedBlockChain vChain = new FullPrunedBlockChain(
+                MainNetParams.get(), store);
+        vChain.setRunScripts(false);
+
+        PeerGroup vPeerGroup = new PeerGroup(MainNetParams.get(), vChain);
+        vPeerGroup.setUseLocalhostPeerWhenPossible(true);
+        vPeerGroup.addAddress(InetAddress.getLocalHost());
+
+        vPeerGroup.start();
+        vPeerGroup.downloadBlockChain();
+
+    }
+
+}

examples/src/main/java/org/bitcoinj/examples/LevelDbSizes.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2016 Robin Owens
+ *
+ * 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.examples;
+
+import static org.fusesource.leveldbjni.JniDBFactory.*;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.iq80.leveldb.DB;
+import org.iq80.leveldb.Options;
+import org.iq80.leveldb.Range;
+
+public class LevelDbSizes {
+
+    public static void main(String[] args) throws Exception {
+        DB db = null;
+        Options options = new Options();
+        options.createIfMissing(false);
+        try {
+            db = factory.open(new File(args[0]), options);
+        } catch (IOException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+        Thread.sleep(100000);
+        for (int i = 0; i < 10; i++) {
+            byte[] from = new byte[1];
+            from[0] = (byte) i;
+            byte[] to = new byte[1];
+            to[0] = (byte) (i + 1);
+
+            long[] sizes = db.getApproximateSizes(new Range(from, to));
+            System.out.println("From:" + i + " to:" + (i + 1) + " Size: "
+                    + sizes[0]);
+        }
+        byte[] from = new byte[1];
+        from[0] = 0;
+        byte[] to = new byte[1];
+        to[0] = -128;
+
+        long[] sizes = db.getApproximateSizes(new Range(from, to));
+        System.out.println("Size: " + sizes[0]);
+        String stats = db.getProperty("leveldb.stats");
+        System.out.println(stats);
+        db.close();
+    }
+
+}