Added StorageBerkeleyDB and rewritten all in Kotlin

.gitignore

@@ -1,4 +0,0 @@
-/out/
-/build/
-/.idea/
-/.gradle/

.idea/.name

@@ -0,0 +1 @@
+influence-bootstrap-node

.idea/codeStyles/Project.xml

@@ -0,0 +1,10 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <JetCodeStyleSettings>
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </JetCodeStyleSettings>
+    <codeStyleSettings language="kotlin">
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </codeStyleSettings>
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

.idea/compiler.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel>
+      <module name="io.github.chronosx88.influence-bootstrap-node.test" target="1.8" />
+    </bytecodeTargetLevel>
+  </component>
+</project>

.idea/libraries/je_5_0_104.xml

@@ -0,0 +1,7 @@
+<component name="libraryTable">
+  <library name="je-5.0.104">
+    <CLASSES />
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

META-INF/MANIFEST.MF

@@ -1,3 +0,0 @@
-Manifest-Version: 1.0
-Main-Class: io.github.chronosx88.dhtBootstrap.Main
-

build.gradle

@@ -1,8 +1,20 @@
 plugins {
     id 'java'
+    id 'org.jetbrains.kotlin.jvm' version '1.3.21'
 }
+group 'io.github.chronosx88'
+version '0.1'
 
-version '1.0-SNAPSHOT'
+task fatJar(type: Jar) {
+    manifest {
+        attributes(
+                'Main-Class': 'io.github.chronosx88.dhtBootstrap.MainKt'
+        )
+    }
+    baseName = project.name + '-all'
+    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
+    with jar
+}
 
 sourceCompatibility = 1.8
 
@@ -14,14 +26,22 @@ repositories {
 }
 
 dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
     implementation 'net.tomp2p:tomp2p-all:5.0-Beta8'
     implementation 'org.slf4j:slf4j-log4j12:+'
 }
 
+compileKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+compileTestKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
 jar {
     manifest {
         attributes(
-                'Main-Class': 'io.github.chronosx88.dhtBootstrap.Main'
+                'Main-Class': 'io.github.chronosx88.dhtBootstrap.MainKt'
         )
     }
-}
+    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
+}

gradle.properties

@@ -0,0 +1 @@
+kotlin.code.style=official

gradle/wrapper/gradle-wrapper.properties

@@ -1,4 +1,4 @@
-#Thu Feb 28 14:04:57 MSK 2019
+#Sun Apr 07 16:50:17 MSK 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME

settings.gradle

@@ -1,2 +1,3 @@
 rootProject.name = 'Influence-Bootstrap-Node'
+rootProject.name = 'influence-bootstrap-node'
 

src/main/java/io/github/chronosx88/dhtBootstrap/Main.java

@@ -1,65 +0,0 @@
-package io.github.chronosx88.dhtBootstrap;
-
-import net.tomp2p.connection.RSASignatureFactory;
-import net.tomp2p.dht.PeerBuilderDHT;
-import net.tomp2p.dht.PeerDHT;
-import net.tomp2p.nat.PeerBuilderNAT;
-import net.tomp2p.p2p.PeerBuilder;
-import net.tomp2p.peers.Number160;
-import net.tomp2p.relay.RelayType;
-import net.tomp2p.relay.tcp.TCPRelayServerConfig;
-import net.tomp2p.storage.StorageDisk;
-
-import java.io.*;
-import java.util.Properties;
-import java.util.UUID;
-
-public class Main {
-    private static PeerDHT peerDHT;
-    private static Number160 peerID;
-    private static Properties props;
-    private static final String DATA_DIR_PATH = System.getProperty("user.home") + "/.local/share/Influence-Bootstrap/";
-
-    public static void main(String[] args) {
-        props = new Properties();
-        org.apache.log4j.BasicConfigurator.configure();
-        File dataDir = new File(DATA_DIR_PATH);
-        File config = new File(DATA_DIR_PATH + "config.properties");
-        try {
-            if(!dataDir.exists() && !config.exists()) {
-                dataDir.mkdir();
-                config.createNewFile();
-                props.setProperty("isFirstRun", "false");
-                props.setProperty("peerID", UUID.randomUUID().toString());
-                props.store(new FileWriter(config), "");
-            }
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-
-        try{
-            props.load(new FileInputStream(config));
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-
-        peerID = Number160.createHash(props.getProperty("peerID"));
-
-        try {
-            peerDHT =
-                    new PeerBuilderDHT(new PeerBuilder(peerID).ports(7243).start())
-                    .storage(
-                            new StorageDisk(
-                                    peerID,
-                                    new File(DATA_DIR_PATH),
-                                    new RSASignatureFactory()
-                            )
-                    ).start();
-            new PeerBuilderNAT(peerDHT.peer())
-                    .addRelayServerConfiguration(RelayType.OPENTCP, new TCPRelayServerConfig())
-                    .start();
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-    }
-}

src/main/kotlin/io/github/chronosx88/dhtBootstrap/DataSerializer.kt

@@ -0,0 +1,103 @@
+package io.github.chronosx88.dhtBootstrap
+
+import com.sleepycat.bind.EntryBinding
+import com.sleepycat.je.DatabaseEntry
+
+import net.tomp2p.connection.SignatureFactory
+import net.tomp2p.storage.AlternativeCompositeByteBuf
+import net.tomp2p.storage.Data
+
+import java.io.ByteArrayInputStream
+import java.io.ByteArrayOutputStream
+import java.io.IOException
+import java.io.OutputStream
+import java.io.Serializable
+import java.nio.ByteBuffer
+import java.security.InvalidKeyException
+import java.security.SignatureException
+
+import io.netty.buffer.Unpooled
+import org.slf4j.LoggerFactory
+
+class DataSerializer(private val signatureFactory: SignatureFactory) : EntryBinding<Data>, Serializable {
+    private val LOG_TAG = "DataSerializer"
+    private val LOG = LoggerFactory.getLogger(DataSerializer::class.java)
+
+    override fun entryToObject(databaseEntry: DatabaseEntry): Data? {
+        if (databaseEntry.data == null) {
+            return null
+        }
+        val inputStream = ByteArrayInputStream(databaseEntry.data)
+        var buf = Unpooled.buffer()
+        var data: Data? = null
+        while (data == null) {
+            buf.writeByte(inputStream.read())
+            data = Data.decodeHeader(buf, signatureFactory)
+        }
+        val len = data.length()
+        val me = ByteArray(len)
+        try {
+            inputStream.read(me)
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+
+        buf = Unpooled.wrappedBuffer(me)
+        var retVal = data.decodeBuffer(buf)
+        if (!retVal) {
+            LOG.error("# ERROR: Data could not be deserialized!")
+        }
+        retVal = data.decodeDone(buf, signatureFactory)
+        if (!retVal) {
+            LOG.error("# ERROR: Signature could not be read!")
+        }
+        return data
+    }
+
+    override fun objectToEntry(data: Data, databaseEntry: DatabaseEntry) {
+        val forSigningKP = keyPairManager.getKeyPair("mainSigningKeyPair")
+        data.sign(forSigningKP)
+        val out = ByteArrayOutputStream()
+        val acb = AlternativeCompositeByteBuf.compBuffer(AlternativeCompositeByteBuf.UNPOOLED_HEAP)
+        try {
+            // header first
+            data.encodeHeader(acb, signatureFactory)
+            writeData(out, acb.nioBuffers())
+            acb.skipBytes(acb.writerIndex())
+            // next data - no need to copy to another buffer, just take the data
+            // from memory
+            writeData(out, data.toByteBuffers())
+            // rest
+            data.encodeDone(acb, signatureFactory)
+            writeData(out, acb.nioBuffers())
+        } catch (e: SignatureException) {
+            e.printStackTrace()
+        } catch (e: InvalidKeyException) {
+            e.printStackTrace()
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+
+        databaseEntry.data = out.toByteArray()
+    }
+
+    @Throws(IOException::class)
+    private fun writeData(out: OutputStream, nioBuffers: Array<ByteBuffer>) {
+        val length = nioBuffers.size
+        for (i in 0 until length) {
+            val remaining = nioBuffers[i].remaining()
+            if (nioBuffers[i].hasArray()) {
+                out.write(nioBuffers[i].array(), nioBuffers[i].arrayOffset(), remaining)
+            } else {
+                val me = ByteArray(remaining)
+                nioBuffers[i].get(me)
+                out.write(me)
+            }
+        }
+    }
+
+    companion object {
+        private const val serialVersionUID = 1428836065493792295L
+        private val keyPairManager = KeyPairManager()
+    }
+}

src/main/kotlin/io/github/chronosx88/dhtBootstrap/KeyPairManager.kt

@@ -0,0 +1,85 @@
+package io.github.chronosx88.dhtBootstrap
+
+import java.io.IOException
+import java.io.FileOutputStream
+import java.io.File
+import java.security.KeyPair
+import java.security.NoSuchAlgorithmException
+import java.security.KeyPairGenerator
+import java.io.FileInputStream
+
+
+class KeyPairManager {
+    private val keyPairDir: File
+    private val serializer: Serializer<KeyPair>
+
+    init {
+        this.keyPairDir = File(DATA_DIR_PATH, "keyPairs")
+        if (!this.keyPairDir.exists()) {
+            this.keyPairDir.mkdir()
+        }
+        this.serializer = Serializer()
+    }
+
+    fun openMainKeyPair(): KeyPair? {
+        return getKeyPair("mainKeyPair")
+    }
+
+    fun getKeyPair(keyPairName: String): KeyPair? {
+        var keyPairName = keyPairName
+        keyPairName = "$keyPairName.kp"
+        val keyPairFile = File(keyPairDir, keyPairName)
+        return if (!keyPairFile.exists()) {
+            createKeyPairFile(keyPairFile)
+        } else openKeyPairFile(keyPairFile)
+    }
+
+    @Synchronized
+    private fun openKeyPairFile(keyPairFile: File): KeyPair? {
+        var keyPair: KeyPair? = null
+        try {
+            val inputStream = FileInputStream(keyPairFile)
+            val serializedKeyPair = ByteArray(keyPairFile.length().toInt())
+            inputStream.read(serializedKeyPair)
+            inputStream.close()
+            keyPair = serializer.deserialize(serializedKeyPair)
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+
+        return keyPair
+    }
+
+    @Synchronized
+    private fun createKeyPairFile(keyPairFile: File): KeyPair? {
+        var keyPair: KeyPair? = null
+        try {
+            keyPairFile.createNewFile()
+            keyPair = KeyPairGenerator.getInstance("DSA").generateKeyPair()
+            val outputStream = FileOutputStream(keyPairFile)
+            outputStream.write(serializer.serialize(keyPair))
+            outputStream.close()
+        } catch (e: IOException) {
+            e.printStackTrace()
+        } catch (e: NoSuchAlgorithmException) {
+            e.printStackTrace()
+        }
+
+        return keyPair
+    }
+
+    @Synchronized
+    fun saveKeyPair(keyPairID: String, keyPair: KeyPair) {
+        val keyPairFile = File(keyPairDir, "$keyPairID.kp")
+        if (!keyPairFile.exists()) {
+            try {
+                val outputStream = FileOutputStream(keyPairFile)
+                outputStream.write(serializer.serialize(keyPair))
+                outputStream.close()
+            } catch (e: IOException) {
+                e.printStackTrace()
+            }
+
+        }
+    }
+}

src/main/kotlin/io/github/chronosx88/dhtBootstrap/Main.kt

@@ -0,0 +1,69 @@
+package io.github.chronosx88.dhtBootstrap
+
+import net.tomp2p.connection.DSASignatureFactory
+import net.tomp2p.dht.PeerBuilderDHT
+import net.tomp2p.dht.PeerDHT
+import net.tomp2p.nat.PeerBuilderNAT
+import net.tomp2p.p2p.PeerBuilder
+import net.tomp2p.peers.Number160
+import net.tomp2p.relay.RelayType
+import net.tomp2p.relay.tcp.TCPRelayServerConfig
+import net.tomp2p.replication.AutoReplication
+
+import java.io.File
+import java.io.FileInputStream
+import java.io.FileWriter
+import java.io.IOException
+import java.util.Properties
+import java.util.UUID
+
+
+var peerDHT: PeerDHT? = null
+var peerID: Number160? = null
+var props: Properties? = null
+val DATA_DIR_PATH = System.getProperty("user.home") + "/.local/share/Influence-Bootstrap/"
+
+fun main() {
+    props = Properties()
+    org.apache.log4j.BasicConfigurator.configure()
+    val dataDir = File(DATA_DIR_PATH)
+    val config = File(DATA_DIR_PATH + "config.properties")
+    try {
+        if (!dataDir.exists() && !config.exists()) {
+            dataDir.mkdir()
+            config.createNewFile()
+            props!!.setProperty("isFirstRun", "false")
+            props!!.setProperty("peerID", UUID.randomUUID().toString())
+            props!!.store(FileWriter(config), "")
+        }
+    } catch (e: IOException) {
+        e.printStackTrace()
+    }
+
+    try {
+        props!!.load(FileInputStream(config))
+    } catch (e: IOException) {
+        e.printStackTrace()
+    }
+
+    peerID = Number160.createHash(props!!.getProperty("peerID"))
+
+    try {
+        peerDHT = PeerBuilderDHT(PeerBuilder(peerID).ports(7243).start())
+            .storage(
+                StorageBerkeleyDB(
+                    peerID!!,
+                    File(DATA_DIR_PATH),
+                    DSASignatureFactory()
+                )
+            ).start()
+        PeerBuilderNAT(peerDHT!!.peer())
+            .addRelayServerConfiguration(RelayType.OPENTCP, TCPRelayServerConfig())
+            .start()
+    } catch (e: IOException) {
+        e.printStackTrace()
+    }
+
+    //val replication = AutoReplication(peerDHT!!.peer())
+    //replication.start()
+}

src/main/kotlin/io/github/chronosx88/dhtBootstrap/Serializer.kt

@@ -0,0 +1,50 @@
+package io.github.chronosx88.dhtBootstrap
+
+import com.sleepycat.bind.EntryBinding
+import com.sleepycat.je.DatabaseEntry
+
+import java.io.ByteArrayInputStream
+import java.io.ByteArrayOutputStream
+import java.io.IOException
+import java.io.ObjectInputStream
+import java.io.ObjectOutputStream
+
+class Serializer<T> : EntryBinding<T> {
+    fun serialize(obj: T): ByteArray {
+        val byteArray = ByteArrayOutputStream()
+        try {
+            val objectOutputStream = ObjectOutputStream(byteArray)
+            objectOutputStream.writeObject(obj)
+            objectOutputStream.close()
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+
+        return byteArray.toByteArray()
+    }
+
+    fun deserialize(serializedObject: ByteArray?): T? {
+        if (serializedObject == null)
+            return null
+        val inputStream = ByteArrayInputStream(serializedObject)
+        var obj: Any? = null
+        try {
+            val objectInputStream = ObjectInputStream(inputStream)
+            obj = objectInputStream.readObject()
+        } catch (e: ClassNotFoundException) {
+            e.printStackTrace()
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+
+        return obj as T?
+    }
+
+    override fun entryToObject(databaseEntry: DatabaseEntry): T? {
+        return deserialize(databaseEntry.data)
+    }
+
+    override fun objectToEntry(obj: T, databaseEntry: DatabaseEntry) {
+        databaseEntry.data = serialize(obj)
+    }
+}

src/main/kotlin/io/github/chronosx88/dhtBootstrap/StorageBerkeleyDB.kt

@@ -0,0 +1,262 @@
+package io.github.chronosx88.dhtBootstrap
+
+import com.sleepycat.collections.StoredSortedMap
+import com.sleepycat.je.Database
+import com.sleepycat.je.DatabaseConfig
+import com.sleepycat.je.Environment
+import com.sleepycat.je.EnvironmentConfig
+import net.tomp2p.connection.SignatureFactory
+import net.tomp2p.dht.Storage
+import net.tomp2p.peers.Number160
+import net.tomp2p.peers.Number320
+import net.tomp2p.peers.Number480
+import net.tomp2p.peers.Number640
+import net.tomp2p.storage.Data
+import java.io.File
+import java.security.PublicKey
+import java.util.*
+import java.util.concurrent.ConcurrentHashMap
+
+
+class StorageBerkeleyDB(peerId: Number160, path : File, signatureFactory: SignatureFactory) : Storage {
+    // Core
+    private val dataMap: StoredSortedMap<Number640, Data>
+    // Maintenance
+    private val timeoutMap: StoredSortedMap<Number640, Long>
+    private val timeoutMapRev: StoredSortedMap<Long, Set<Number640>>
+    // Protection
+    private val protectedDomainMap: StoredSortedMap<Number320, PublicKey>
+    private val protectedEntryMap: StoredSortedMap<Number480, PublicKey>
+    // Responsibility
+    private val responsibilityMap: StoredSortedMap<Number160, Number160>
+    private val responsibilityMapRev: StoredSortedMap<Number160, Set<Number160>>
+
+    private val dataMapDB: Database
+    private val timeoutMapDB: Database
+    private val timeoutMapRevDB: Database
+    private val protectedDomainMapDB: Database
+    private val protectedEntryMapDB: Database
+    private val responsibilityMapDB: Database
+    private val responsibilityMapRevDB: Database
+
+
+    private val storageCheckIntervalMillis: Int
+    private val dbEnvironment: Environment
+
+    init {
+        val envConfig = EnvironmentConfig()
+        envConfig.allowCreate = true
+        dbEnvironment = Environment(path, envConfig)
+        val dbConfig = DatabaseConfig()
+        dbConfig.allowCreate = true
+
+        dataMapDB = dbEnvironment.openDatabase(null, "dataMap_$peerId", dbConfig)
+        timeoutMapDB = dbEnvironment.openDatabase(null, "timeoutMap_$peerId", dbConfig)
+        timeoutMapRevDB = dbEnvironment.openDatabase(null, "timeoutMapRev_$peerId", dbConfig)
+        protectedDomainMapDB = dbEnvironment.openDatabase(null, "protectedDomainMap_$peerId", dbConfig)
+        protectedEntryMapDB = dbEnvironment.openDatabase(null, "protectedEntryMap_$peerId", dbConfig)
+        responsibilityMapDB = dbEnvironment.openDatabase(null, "responsibilityMap_$peerId", dbConfig)
+        responsibilityMapRevDB = dbEnvironment.openDatabase(null, "responsibilityMapRev_$peerId", dbConfig)
+
+        storageCheckIntervalMillis = 60 * 1000
+
+        dataMap = StoredSortedMap(dataMapDB, Serializer<Number640>(), DataSerializer(signatureFactory), true)
+        timeoutMap = StoredSortedMap(timeoutMapDB, Serializer<Number640>(), Serializer<Long>(), true)
+        timeoutMapRev = StoredSortedMap(timeoutMapRevDB, Serializer<Long>(), Serializer<Set<Number640>>(), true)
+        protectedDomainMap = StoredSortedMap(protectedDomainMapDB, Serializer<Number320>(), Serializer<PublicKey>(), true)
+        protectedEntryMap = StoredSortedMap(protectedEntryMapDB, Serializer<Number480>(), Serializer<PublicKey>(), true)
+        responsibilityMap = StoredSortedMap(responsibilityMapDB, Serializer<Number160>(), Serializer<Number160>(), true)
+        responsibilityMapRev = StoredSortedMap(responsibilityMapRevDB, Serializer<Number160>(), Serializer<Set<Number160>>(), true)
+    }
+
+    override fun contains(key: Number640?): Boolean {
+        return dataMap.containsKey(key)
+    }
+
+    override fun contains(from: Number640?, to: Number640?): Int {
+        return dataMap.subMap(from, true, to, true).size
+    }
+
+    override fun findContentForResponsiblePeerID(peerID: Number160?): MutableSet<Number160> {
+        return responsibilityMapRev[peerID] as MutableSet<Number160>
+    }
+
+    override fun findPeerIDsForResponsibleContent(locationKey: Number160?): Number160? {
+        return responsibilityMap[locationKey]
+    }
+
+    override fun put(key: Number640?, value: Data?): Data? {
+        return dataMap.put(key, value)
+    }
+
+    override fun get(key: Number640?): Data? {
+        return dataMap[key]
+    }
+
+    override fun remove(key: Number640?, returnData: Boolean): Data? {
+        return dataMap.remove(key)
+    }
+
+    override fun remove(from: Number640?, to: Number640?): NavigableMap<Number640, Data> {
+        val tmp = dataMap.subMap(from, true, to, true)
+        val retVal = TreeMap<Number640, Data>()
+        for(entry : Map.Entry<Number640, Data> in tmp.entries) {
+            retVal[entry.key] = entry.value
+        }
+        tmp.clear()
+        return retVal
+    }
+
+    override fun addTimeout(key: Number640, expiration: Long) {
+        val oldExpiration = timeoutMap.put(key, expiration)
+        putIfAbsent2(expiration, key)
+        if (oldExpiration == null) {
+            return
+        }
+        removeRevTimeout(key, oldExpiration)
+    }
+
+    private fun putIfAbsent2(expiration: Long, key: Number640) {
+        var timeouts = timeoutMapRev[expiration]
+        //var timeouts : MutableSet<Number640> = timeoutMapRev[expiration] as MutableSet<Number640>
+        if (timeouts == null) {
+            timeouts = Collections.newSetFromMap(ConcurrentHashMap())
+        }
+        (timeouts as MutableSet).add(key)
+        timeoutMapRev[expiration] = timeouts
+    }
+
+    private fun removeRevTimeout(key: Number640, expiration: Long?) {
+        val tmp = timeoutMapRev[expiration] as MutableSet<Number640>
+        if (tmp != null) {
+            tmp.remove(key)
+            if (tmp.isEmpty()) {
+                timeoutMapRev.remove(expiration)
+            } else {
+                timeoutMapRev[expiration!!] = tmp
+            }
+        }
+    }
+
+    override fun updateResponsibilities(locationKey: Number160, peerId: Number160?): Boolean {
+        val oldPeerID = responsibilityMap.put(locationKey, peerId)
+        val hasChanged: Boolean
+        if (oldPeerID != null) {
+            if (oldPeerID == peerId) {
+                hasChanged = false
+            } else {
+                removeRevResponsibility(oldPeerID, locationKey)
+                hasChanged = true
+            }
+        } else {
+            hasChanged = true
+        }
+        var contentIDs: MutableSet<Number160>? = responsibilityMapRev[peerId] as MutableSet
+        if (contentIDs == null) {
+            contentIDs = HashSet()
+        }
+        contentIDs.add(locationKey)
+        responsibilityMapRev[peerId] = contentIDs
+        return hasChanged
+    }
+
+    private fun removeRevResponsibility(peerId: Number160, locationKey: Number160) {
+        val contentIDs = responsibilityMapRev[peerId] as MutableSet
+        if (contentIDs != null) {
+            contentIDs.remove(locationKey)
+            if (contentIDs.isEmpty()) {
+                responsibilityMapRev.remove(peerId)
+            } else {
+                responsibilityMapRev[peerId] = contentIDs
+            }
+        }
+    }
+
+    override fun protectDomain(key: Number320?, publicKey: PublicKey?): Boolean {
+        protectedDomainMap[key] = publicKey
+        return true
+    }
+
+    override fun storageCheckIntervalMillis(): Int {
+        return storageCheckIntervalMillis
+    }
+
+    override fun isDomainProtectedByOthers(key: Number320?, publicKey: PublicKey?): Boolean {
+        val other = protectedDomainMap[key] ?: return false
+        return other != publicKey
+    }
+
+    override fun removeTimeout(key: Number640) {
+        val expiration = timeoutMap.remove(key) ?: return
+        removeRevTimeout(key, expiration)
+    }
+
+    override fun removeResponsibility(locationKey: Number160) {
+        val peerId = responsibilityMap.remove(locationKey)
+        if (peerId != null) {
+            removeRevResponsibility(peerId, locationKey)
+        }
+    }
+
+    override fun protectEntry(key: Number480?, publicKey: PublicKey?): Boolean {
+        protectedEntryMap[key] = publicKey
+        return true
+    }
+
+    override fun map(): NavigableMap<Number640, Data> {
+        val retVal = TreeMap<Number640, Data>()
+        for ((key, value) in dataMap) {
+            retVal[key] = value
+        }
+
+        return retVal
+    }
+
+    override fun isEntryProtectedByOthers(key: Number480?, publicKey: PublicKey?): Boolean {
+        val other = protectedEntryMap[key] ?: return false
+        return other != publicKey
+    }
+
+    override fun subMap(from: Number640?, to: Number640?, limit: Int, ascending: Boolean): NavigableMap<Number640, Data> {
+        val tmp = dataMap.subMap(from, true, to, true)
+        val descendingMap = TreeMap<Number640, Data>(tmp).descendingMap()
+        val retVal = TreeMap<Number640, Data>()
+        if (limit < 0) {
+            for ((key, value) in if (ascending) tmp else descendingMap) {
+                retVal[key] = value
+            }
+        } else {
+            val limit1 = Math.min(limit, tmp.size)
+            val iterator = if (ascending)
+                tmp.entries.iterator()
+            else
+                descendingMap.entries.iterator()
+            var i = 0
+            while (iterator.hasNext() && i < limit1) {
+                val entry = iterator.next()
+                retVal[entry.key] = entry.value
+                i++
+            }
+        }
+        return retVal
+    }
+
+    override fun subMapTimeout(to: Long): MutableCollection<Number640> {
+        val tmp = timeoutMapRev.subMap(0L, to)
+        val toRemove = ArrayList<Number640>()
+        for (set in tmp.values) {
+            toRemove.addAll(set)
+        }
+        return toRemove
+    }
+
+    override fun close() {
+        dataMapDB.close()
+        timeoutMapDB.close()
+        timeoutMapRevDB.close()
+        protectedDomainMapDB.close()
+        protectedEntryMapDB.close()
+        responsibilityMapDB.close()
+        responsibilityMapRevDB.close()
+    }
+}