Move java api to extras/

Change-Id: Ibd5cbbdfb22a235442cddaebc9eae9a3c4e35ec9
Signed-off-by: Damjan Marion <damarion@cisco.com>

26 files changed, 1491 insertions, 0 deletions

diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/AbstractCallbackApiTest.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/AbstractCallbackApiTest.java
new file mode 100644
index 00000000000..d221d1e0c71
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/AbstractCallbackApiTest.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+import io.fd.vpp.jvpp.callback.ControlPingCallback;
+import io.fd.vpp.jvpp.dto.ControlPing;
+import io.fd.vpp.jvpp.dto.ControlPingReply;
+
+public abstract class AbstractCallbackApiTest {
+
+    private static int receivedPingCount = 0;
+    private static int errorPingCount = 0;
+
+    public static void testControlPing(String shm_prefix, JVpp jvpp) throws Exception {
+        try (JVppRegistry registry = new JVppRegistryImpl("CallbackApiTest", shm_prefix)) {
+
+            registry.register(jvpp, new ControlPingCallback() {
+                @Override
+                public void onControlPingReply(final ControlPingReply reply) {
+                    System.out.printf("Received ControlPingReply: %s%n", reply);
+                    receivedPingCount++;
+                }
+
+                @Override
+                public void onError(VppCallbackException ex) {
+                    System.out.printf("Received onError exception: call=%s, reply=%d, context=%d ", ex.getMethodName(),
+                            ex.getErrorCode(), ex.getCtxId());
+                    errorPingCount++;
+                }
+
+            });
+            System.out.println("Successfully connected to VPP");
+            Thread.sleep(1000);
+
+            System.out.println("Sending control ping using JVppRegistry");
+            registry.controlPing(jvpp.getClass());
+
+            Thread.sleep(2000);
+
+            System.out.println("Sending control ping using JVpp plugin");
+            jvpp.send(new ControlPing());
+
+            Thread.sleep(2000);
+            System.out.println("Disconnecting...");
+            Assertions.assertEquals(2, receivedPingCount);
+            Assertions.assertEquals(0, errorPingCount);
+        }
+    }
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/Assertions.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/Assertions.java
new file mode 100644
index 00000000000..f8b591f5ef2
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/Assertions.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+public class Assertions {
+
+    public static void assertEquals(final int expected, final int actual) {
+        if (expected != actual) {
+            throw new IllegalArgumentException(String.format("Expected[%s]/Actual[%s]", expected, actual));
+        }
+    }
+
+    public static void assertNotNull(final Object value) {
+        if (value == null) {
+            throw new IllegalArgumentException("Variable is null");
+        }
+    }
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/JVpp.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/JVpp.java
new file mode 100644
index 00000000000..55f25a7bd2e
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/JVpp.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+import io.fd.vpp.jvpp.callback.JVppCallback;
+import io.fd.vpp.jvpp.dto.ControlPing;
+import io.fd.vpp.jvpp.dto.JVppRequest;
+
+/**
+ * Base interface for plugin's Java API.
+ */
+public interface JVpp extends AutoCloseable {
+
+    /**
+     * Sends request to vpp.
+     *
+     * @param request request to be sent
+     * @return unique identifer of message in message queue
+     * @throws VppInvocationException when message could not be sent
+     */
+    int send(final JVppRequest request) throws VppInvocationException;
+
+    /**
+     * Initializes plugin's Java API.
+     *
+     * @param registry     plugin registry
+     * @param callback     called by vpe.api message handlers
+     * @param queueAddress address of vpp shared memory queue
+     * @param clientIndex  vpp client identifier
+     */
+    void init(final JVppRegistry registry, final JVppCallback callback, final long queueAddress,
+              final int clientIndex);
+
+    /**
+     * Sends control_ping message.
+     *
+     * @param controlPing request DTO
+     * @return unique identifer of message in message queue
+     * @throws VppInvocationException when message could not be sent
+     */
+    int controlPing(final ControlPing controlPing) throws VppInvocationException;
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/JVppRegistry.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/JVppRegistry.java
new file mode 100644
index 00000000000..6535db02358
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/JVppRegistry.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+import io.fd.vpp.jvpp.callback.JVppCallback;
+
+/**
+ * Manages VPP connection and stores plugin callbacks.
+ */
+public interface JVppRegistry extends AutoCloseable {
+
+    /**
+     * Vpp connection managed by the registry.
+     *
+     * @return representation of vpp connection
+     */
+    VppConnection getConnection();
+
+    /**
+     * Registers callback and initializes Java API for given plugin.
+     *
+     * @param jvpp     plugin name
+     * @param callback callback provided by the plugin
+     * @throws NullPointerException     if name or callback is null
+     * @throws IllegalArgumentException if plugin was already registered
+     */
+    void register(final JVpp jvpp, final JVppCallback callback);
+
+    /**
+     * Unregisters callback for the given plugin.
+     *
+     * @param name plugin name
+     * @throws NullPointerException     if name is null
+     * @throws IllegalArgumentException if plugin was not registered
+     */
+    void unregister(final String name);
+
+    /**
+     * Returns callback registered for the plugin.
+     *
+     * @param name plugin name
+     * @return callback provided by the plugin
+     * @throws NullPointerException     if name is null
+     * @throws IllegalArgumentException if plugin was not registered
+     */
+    JVppCallback get(final String name);
+
+    /**
+     * Sends control ping. Reply handler calls callback registered for give plugin.
+     *
+     * Control ping is used for initial RX thread to Java thread attachment
+     * that takes place in the plugin's JNI lib
+     * and to wrap dump message replies in one list.
+     *
+     * VPP plugins don't have to provide special control ping, therefore
+     * it is necessary to providing control ping support in JVppRegistry.
+
+     * @param clazz identifies plugin that should receive ping callback
+     * @return unique identifier of message in message queue
+     */
+    int controlPing(final Class<? extends JVpp> clazz) throws VppInvocationException;
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/JVppRegistryImpl.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/JVppRegistryImpl.java
new file mode 100644
index 00000000000..baef14c3865
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/JVppRegistryImpl.java
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+import static java.util.Objects.requireNonNull;
+
+import io.fd.vpp.jvpp.callback.ControlPingCallback;
+import io.fd.vpp.jvpp.callback.JVppCallback;
+import io.fd.vpp.jvpp.dto.ControlPingReply;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * Default implementation of JVppRegistry.
+ */
+public final class JVppRegistryImpl implements JVppRegistry, ControlPingCallback {
+
+    private static final Logger LOG = Logger.getLogger(JVppRegistryImpl.class.getName());
+
+    private final VppJNIConnection connection;
+    // Unguarded concurrent map, no race conditions expected on top of that
+    private final Map<String, JVppCallback> pluginRegistry;
+    // Guarded by self
+    private final Map<Integer, ControlPingCallback> pingCalls;
+
+    public JVppRegistryImpl(final String clientName) throws IOException {
+        connection = new VppJNIConnection(clientName);
+        connection.connect();
+        pluginRegistry = new ConcurrentHashMap<>();
+        pingCalls = new HashMap<>();
+    }
+
+    public JVppRegistryImpl(final String clientName, final String shmPrefix) throws IOException {
+        connection = new VppJNIConnection(clientName, shmPrefix);
+        connection.connect();
+        pluginRegistry = new ConcurrentHashMap<>();
+        pingCalls = new HashMap<>();
+    }
+
+    @Override
+    public VppConnection getConnection() {
+        return connection;
+    }
+
+    @Override
+    public void register(final JVpp jvpp, final JVppCallback callback) {
+        requireNonNull(jvpp, "jvpp should not be null");
+        requireNonNull(callback, "Callback should not be null");
+        final String name = jvpp.getClass().getName();
+        if (pluginRegistry.containsKey(name)) {
+            throw new IllegalArgumentException(
+                String.format("Callback for plugin %s was already registered", name));
+        }
+        jvpp.init(this, callback, connection.getConnectionInfo().queueAddress,
+            connection.getConnectionInfo().clientIndex);
+        pluginRegistry.put(name, callback);
+    }
+
+    @Override
+    public void unregister(final String name) {
+        requireNonNull(name, "Plugin name should not be null");
+        final JVppCallback previous = pluginRegistry.remove(name);
+        assertPluginWasRegistered(name, previous);
+    }
+
+    @Override
+    public JVppCallback get(final String name) {
+        requireNonNull(name, "Plugin name should not be null");
+        JVppCallback value = pluginRegistry.get(name);
+        assertPluginWasRegistered(name, value);
+        return value;
+    }
+
+    private native int controlPing0() throws VppInvocationException;
+
+    @Override
+    public int controlPing(final Class<? extends JVpp> clazz) throws VppInvocationException {
+        connection.checkActive();
+        final String name = clazz.getName();
+
+        final ControlPingCallback callback = (ControlPingCallback) pluginRegistry.get(clazz.getName());
+        assertPluginWasRegistered(name, callback);
+
+        // controlPing0 is sending function and can go to waiting in case of e. g. full queue
+        // because of that it cant be in same synchronization block as used by reply handler function
+        int context = controlPing0();
+        if (context < 0) {
+            throw new VppInvocationException("controlPing", context);
+        }
+
+        synchronized (pingCalls) {
+            // if callback is in map it's because reply was already received
+            EarlyControlPingReply earlyReplyCallback = (EarlyControlPingReply) pingCalls.remove(context);
+            if(earlyReplyCallback == null) {
+                pingCalls.put(context, callback);
+            } else {
+                callback.onControlPingReply(earlyReplyCallback.getReply());
+            }
+        }
+
+        return context;
+    }
+
+    @Override
+    public void onControlPingReply(final ControlPingReply reply) {
+        final ControlPingCallback callback;
+        synchronized (pingCalls) {
+            callback = pingCalls.remove(reply.context);
+            if (callback == null) {
+                // reply received early, because we don't know callback to call
+                // we wrap the reply and let the sender to call it
+                pingCalls.put(reply.context, new EarlyControlPingReply(reply));
+                return;
+            }
+        }
+        // pass the reply to the callback registered by the ping caller
+        callback.onControlPingReply(reply);
+    }
+
+    @Override
+    public void onError(final VppCallbackException ex) {
+        final int ctxId = ex.getCtxId();
+        final ControlPingCallback callback;
+
+        synchronized (pingCalls) {
+            callback = pingCalls.get(ctxId);
+        }
+        if (callback == null) {
+            LOG.log(Level.WARNING, "No callback was registered for reply id={0} ", ctxId);
+            return;
+        }
+        // pass the error to the callback registered by the ping caller
+        callback.onError(ex);
+    }
+
+    private static void assertPluginWasRegistered(final String name, final JVppCallback value) {
+        if (value == null) {
+            throw new IllegalArgumentException(String.format("Callback for plugin %s is not registered", name));
+        }
+    }
+
+    @Override
+    public void close() throws Exception {
+        connection.close();
+    }
+
+    private static class EarlyControlPingReply implements ControlPingCallback {
+
+        private final ControlPingReply reply;
+
+        public EarlyControlPingReply(final ControlPingReply reply) {
+            this.reply = reply;
+        }
+
+        public ControlPingReply getReply() {
+            return reply;
+        }
+
+        @Override
+        public void onError(VppCallbackException ex) {
+            throw new IllegalStateException("Calling onError in EarlyControlPingReply");
+        }
+
+        @Override
+        public void onControlPingReply(ControlPingReply reply) {
+            throw new IllegalStateException("Calling onControlPingReply in EarlyControlPingReply");
+        }
+    }
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/NativeLibraryLoader.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/NativeLibraryLoader.java
new file mode 100644
index 00000000000..ce6d1bfc982
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/NativeLibraryLoader.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.nio.file.attribute.PosixFilePermission;
+import java.nio.file.attribute.PosixFilePermissions;
+import java.util.Set;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * Utility class for loading JNI libraries.
+ */
+public final class NativeLibraryLoader {
+
+    private static final Logger LOG = Logger.getLogger(NativeLibraryLoader.class.getName());
+
+    private NativeLibraryLoader() {
+        throw new UnsupportedOperationException("This utility class cannot be instantiated.");
+    }
+
+    /**
+     * Loads JNI library using class loader of the given class.
+     *
+     * @param libName name of the library to be loaded
+     */
+    public static void loadLibrary(final String libName, final Class clazz) throws IOException {
+        java.util.Objects.requireNonNull(libName, "libName should not be null");
+        java.util.Objects.requireNonNull(clazz, "clazz should not be null");
+        try (final InputStream is = clazz.getResourceAsStream('/' + libName)) {
+            if (is == null) {
+                throw new IOException("Failed to open library resource " + libName);
+            }
+            loadStream(libName, is);
+        }
+    }
+
+    private static void loadStream(final String libName, final InputStream is) throws IOException {
+        final Set<PosixFilePermission> perms = PosixFilePermissions.fromString("rwxr-x---");
+        final Path p = Files.createTempFile(libName, null, PosixFilePermissions.asFileAttribute(perms));
+        try {
+            Files.copy(is, p, StandardCopyOption.REPLACE_EXISTING);
+            Runtime.getRuntime().load(p.toString());
+        } catch (Exception e) {
+            throw new IOException("Failed to load library " + p, e);
+        } finally {
+            try {
+                Files.deleteIfExists(p);
+            } catch (IOException e) {
+                LOG.log(Level.WARNING, String.format("Failed to delete temporary file %s.", p), e);
+            }
+        }
+    }
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppBaseCallException.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppBaseCallException.java
new file mode 100644
index 00000000000..7fc1682ba73
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppBaseCallException.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+
+/**
+ * Base exception representing failed operation of JVpp request call
+ */
+public abstract class VppBaseCallException extends Exception {
+    private final String methodName;
+    private final int errorCode;
+
+    /**
+     * Constructs an VppCallbackException with the specified api method name and error code.
+     *
+     * @param methodName name of a method, which invocation or execution failed
+     * @param errorCode  negative error code value associated with this failure
+     * @throws NullPointerException     if apiMethodName is null
+     */
+    public VppBaseCallException(final String methodName, final int errorCode) {
+        super(String.format("vppApi.%s failed with error code: %d", methodName, errorCode));
+        this.methodName = java.util.Objects.requireNonNull(methodName, "apiMethodName is null!");
+        this.errorCode = errorCode;
+        if(errorCode >= 0) {
+            throw new IllegalArgumentException("Error code must be < 0. Was " + errorCode +
+                    " for " + methodName );
+        }
+    }
+
+    /**
+     * Constructs an VppCallbackException with the specified api method name, error description and error code.
+     *
+     * @param methodName name of a method, which invocation or execution failed
+     * @param message    description of error reason
+     * @param errorCode  negative error code value associated with this failure
+     * @throws NullPointerException     if apiMethodName is null
+     */
+    public VppBaseCallException(final String methodName, final String message, final int errorCode) {
+        super(String.format("vppApi.%s failed: %s (error code: %d)", methodName,message, errorCode));
+        this.methodName = java.util.Objects.requireNonNull(methodName, "apiMethodName is null!");
+        this.errorCode = errorCode;
+        if(errorCode >= 0) {
+            throw new IllegalArgumentException("Error code must be < 0. Was " + errorCode +
+                    " for " + methodName );
+        }
+    }
+
+    /**
+     * Returns  name of a method, which invocation failed.
+     *
+     * @return method name
+     */
+    public String getMethodName() {
+        return methodName;
+    }
+
+    /**
+     * Returns the error code associated with this failure.
+     *
+     * @return a negative integer error code
+     */
+    public int getErrorCode() {
+        return errorCode;
+    }
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppCallbackException.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppCallbackException.java
new file mode 100644
index 00000000000..adcc5d26268
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppCallbackException.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+/**
+ * Callback Exception representing failed operation of JVpp request call
+ */
+public class VppCallbackException extends VppBaseCallException {
+    private final int ctxId;
+
+    /**
+     * Constructs an VppCallbackException with the specified api method name and error code.
+     *
+     * @param methodName  name of a method, which invocation failed.
+     * @param message    description of error reason
+     * @param ctxId      api request context identifier
+     * @param errorCode  negative error code value associated with this failure
+     * @throws NullPointerException     if apiMethodName is null
+     */
+    public VppCallbackException(final String methodName, final String message, final int ctxId, final int errorCode ){
+        super(methodName, message, errorCode);
+        this.ctxId = ctxId;
+    }
+
+    /**
+     * Returns api request context identifier.
+     *
+     * @return value of context identifier
+     */
+    public int getCtxId() {
+        return ctxId;
+    }
+
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppConnection.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppConnection.java
new file mode 100644
index 00000000000..e6fd3bdb257
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppConnection.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+import java.io.IOException;
+
+/**
+ * Representation of a management connection to VPP.
+ */
+public interface VppConnection extends AutoCloseable {
+
+    /**
+     * Opens VppConnection for communication with VPP.
+     *
+     * @throws IOException if connection is not established
+     */
+    void connect() throws IOException;
+
+    /**
+     * Checks if this instance connection is active.
+     *
+     * @throws IllegalStateException if this instance was disconnected.
+     */
+    void checkActive();
+
+    /**
+     * Closes Vpp connection.
+     */
+    @Override
+    void close();
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppInvocationException.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppInvocationException.java
new file mode 100644
index 00000000000..a7ccb197e00
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppInvocationException.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+/**
+ * Exception thrown when Vpp jAPI method invocation failed.
+ */
+public class VppInvocationException extends VppBaseCallException {
+    /**
+     * Constructs an VppApiInvocationFailedException with the specified api method name and error code.
+     *
+     * @param methodName  name of a method, which invocation failed.
+     * @param errorCode  negative error code value associated with this failure
+     * @throws NullPointerException     if apiMethodName is null
+     */
+    public VppInvocationException(final String methodName, final int errorCode) {
+        super(methodName, errorCode);
+    }
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppJNIConnection.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppJNIConnection.java
new file mode 100644
index 00000000000..6a414f36b88
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/VppJNIConnection.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp;
+
+import static io.fd.vpp.jvpp.NativeLibraryLoader.loadLibrary;
+import static java.lang.String.format;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * JNI based representation of a management connection to VPP.
+ */
+public final class VppJNIConnection implements VppConnection {
+    private static final Logger LOG = Logger.getLogger(VppJNIConnection.class.getName());
+    private static final String DEFAULT_SHM_PREFIX = "/vpe-api";
+
+    static {
+        final String libName = "libjvpp_registry.so";
+        try {
+            loadLibrary(libName, VppJNIConnection.class);
+        } catch (IOException e) {
+            LOG.log(Level.SEVERE, format("Can't find vpp jni library: %s", libName), e);
+            throw new ExceptionInInitializerError(e);
+        }
+    }
+
+    private ConnectionInfo connectionInfo;
+
+    private final String clientName;
+    private final String shmPrefix;
+    private volatile boolean disconnected = false;
+
+    /**
+     * Create VPPJNIConnection instance for client connecting to VPP.
+     *
+     * @param clientName client name instance to be used for communication. Single connection per clientName is
+     *                   allowed.
+     */
+    public VppJNIConnection(final String clientName) {
+        this.clientName = Objects.requireNonNull(clientName, "Null clientName");
+        this.shmPrefix = DEFAULT_SHM_PREFIX;
+    }
+
+    public VppJNIConnection(final String clientName, final String shmPrefix) {
+        this.clientName = Objects.requireNonNull(clientName, "Null clientName");
+        this.shmPrefix = Objects.requireNonNull(shmPrefix, "Null shmPrefix");
+    }
+
+    /**
+     * Guarded by VppJNIConnection.class
+     */
+    private static final Map<String, VppJNIConnection> connections = new HashMap<>();
+
+    /**
+     * Initiate VPP connection for current instance
+     *
+     * Multiple instances are allowed since this class is not a singleton (VPP allows multiple management connections).
+     *
+     * However only a single connection per clientName is allowed.
+     *
+     * @throws IOException in case the connection could not be established
+     */
+
+    @Override
+    public void connect() throws IOException {
+        _connect(shmPrefix);
+    }
+
+    private void _connect(final String shmPrefix) throws IOException {
+        Objects.requireNonNull(shmPrefix, "Shared memory prefix must be defined");
+
+        synchronized (VppJNIConnection.class) {
+            if (connections.containsKey(clientName)) {
+                throw new IOException("Client " + clientName + " already connected");
+            }
+
+            connectionInfo = clientConnect(shmPrefix, clientName);
+            if (connectionInfo.status != 0) {
+                throw new IOException("Connection returned error " + connectionInfo.status);
+            }
+            connections.put(clientName, this);
+        }
+    }
+
+    @Override
+    public final void checkActive() {
+        if (disconnected) {
+            throw new IllegalStateException("Disconnected client " + clientName);
+        }
+    }
+
+    @Override
+    public final synchronized void close() {
+        if (!disconnected) {
+            disconnected = true;
+            try {
+                clientDisconnect();
+            } finally {
+                synchronized (VppJNIConnection.class) {
+                    connections.remove(clientName);
+                }
+            }
+        }
+    }
+
+    public ConnectionInfo getConnectionInfo() {
+        return connectionInfo;
+    }
+
+    /**
+     * VPP connection information used by plugins to reuse the connection.
+     */
+    public static final class ConnectionInfo {
+        public final long queueAddress;
+        public final int clientIndex;
+        public final int status; // FIXME throw exception instead
+        public final int pid;
+
+        public ConnectionInfo(long queueAddress, int clientIndex, int status, int pid) {
+            this.queueAddress = queueAddress;
+            this.clientIndex = clientIndex;
+            this.status = status;
+            this.pid = pid;
+        }
+    }
+
+    private static native ConnectionInfo clientConnect(String shmPrefix, String clientName);
+
+    private static native void clientDisconnect();
+
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/callback/ControlPingCallback.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/callback/ControlPingCallback.java
new file mode 100644
index 00000000000..efddfdbb96c
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/callback/ControlPingCallback.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.callback;
+
+import io.fd.vpp.jvpp.dto.ControlPingReply;
+
+/**
+ * Represents callback for control_ping message.
+ */
+public interface ControlPingCallback extends JVppCallback {
+
+    void onControlPingReply(ControlPingReply reply);
+
+}
+
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/callback/JVppCallback.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/callback/JVppCallback.java
new file mode 100644
index 00000000000..ae02063bb2f
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/callback/JVppCallback.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.callback;
+import io.fd.vpp.jvpp.VppCallbackException;
+
+/**
+ * Base JVppCallback interface
+ */
+public interface JVppCallback {
+    /**
+     * onError callback handler used to report failing operation
+     * @param ex VppCallbackException object containing details about failing operation
+     */
+    void onError(VppCallbackException ex);
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/callback/JVppNotificationCallback.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/callback/JVppNotificationCallback.java
new file mode 100644
index 00000000000..8ab0cb2140f
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/callback/JVppNotificationCallback.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.callback;
+
+/**
+* Notification callback
+*/
+public interface JVppNotificationCallback {
+
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/coverity/SuppressFBWarnings.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/coverity/SuppressFBWarnings.java
new file mode 100644
index 00000000000..1e780bb459e
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/coverity/SuppressFBWarnings.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.coverity;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * Used to suppress FindBugs warnings found by Coverity. <br>
+ * We don't want extra dependency, so we define our own annotation version.
+ *
+ * @see <a href="https://sourceforge.net/p/findbugs/feature-requests/298/#5e88"/>Findbugs sourceforge</a>
+ */
+@Retention(RetentionPolicy.CLASS)
+public @interface SuppressFBWarnings {
+    /**
+     * The set of FindBugs warnings that are to be suppressed in annotated element. The value can be a bug category,
+     * kind or pattern.
+     */
+    String[] value() default {};
+
+    /**
+     * Optional documentation of the reason why the warning is suppressed
+     */
+    String justification() default "";
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/ControlPing.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/ControlPing.java
new file mode 100644
index 00000000000..984e1674e83
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/ControlPing.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.dto;
+
+import io.fd.vpp.jvpp.JVpp;
+import io.fd.vpp.jvpp.VppInvocationException;
+
+/**
+ * Represents request DTO for control_ping message.
+ */
+public final class ControlPing implements JVppRequest {
+
+    @Override
+    public int send(final JVpp jvpp) throws VppInvocationException {
+        return jvpp.controlPing(this);
+    }
+
+}
+
+
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/ControlPingReply.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/ControlPingReply.java
new file mode 100644
index 00000000000..61e4d0e423b
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/ControlPingReply.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.dto;
+
+import java.util.Objects;
+
+/**
+ * Represents reply DTO for control_ping message.
+ */
+public final class ControlPingReply implements JVppReply<ControlPing> {
+
+    public int context;
+    public int clientIndex;
+    public int vpePid;
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        final ControlPingReply that = (ControlPingReply) o;
+        return context == that.context &&
+                clientIndex == that.clientIndex &&
+                vpePid == that.vpePid;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(context, clientIndex, vpePid);
+    }
+
+    @Override
+    public String toString() {
+        return "ControlPingReply{" +
+                "context=" + context +
+                ", clientIndex=" + clientIndex +
+                ", vpePid=" + vpePid +
+                '}';
+    }
+}
+
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppDump.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppDump.java
new file mode 100644
index 00000000000..60b98984d9e
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppDump.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.dto;
+
+/**
+* Base interface for all dump requests
+*/
+public interface JVppDump extends JVppRequest {
+
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppReply.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppReply.java
new file mode 100644
index 00000000000..73f512d42d6
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppReply.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.dto;
+
+/**
+* Base interface for all reply DTOs
+*/
+public interface JVppReply<REQ extends JVppRequest> {
+
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppReplyDump.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppReplyDump.java
new file mode 100644
index 00000000000..15111395f9c
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppReplyDump.java
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.dto;
+
+/**
+* Base interface for all dump replies
+*/
+public interface JVppReplyDump<REQ extends JVppRequest, RESP extends JVppReply<REQ>>
+    extends JVppReply<REQ> {
+
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppRequest.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppRequest.java
new file mode 100644
index 00000000000..9b301da20cf
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/dto/JVppRequest.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.dto;
+
+import io.fd.vpp.jvpp.JVpp;
+import io.fd.vpp.jvpp.VppInvocationException;
+
+/**
+* Base interface for all request DTOs
+*/
+public interface JVppRequest {
+
+    /**
+     * Invoke current operation asynchronously on VPP
+     *
+     * @return context id of this request. Can be used to track incoming response
+     */
+    int send(JVpp jvpp) throws VppInvocationException;
+
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/future/AbstractFutureJVppInvoker.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/future/AbstractFutureJVppInvoker.java
new file mode 100644
index 00000000000..ac85f5309ec
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/future/AbstractFutureJVppInvoker.java
@@ -0,0 +1,180 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.future;
+
+
+import java.util.Map;
+import java.util.Objects;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionStage;
+
+import io.fd.vpp.jvpp.JVpp;
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.VppInvocationException;
+import io.fd.vpp.jvpp.dto.JVppDump;
+import io.fd.vpp.jvpp.dto.JVppReply;
+import io.fd.vpp.jvpp.dto.JVppReplyDump;
+import io.fd.vpp.jvpp.dto.JVppRequest;
+
+/**
+ * Future facade on top of JVpp
+ */
+public abstract class AbstractFutureJVppInvoker implements FutureJVppInvoker {
+
+    private final JVpp jvpp;
+    private final JVppRegistry registry;
+
+    /**
+     * Guarded by self
+     */
+    private final Map<Integer, CompletableFuture<? extends JVppReply<?>>> requests;
+
+    protected AbstractFutureJVppInvoker(final JVpp jvpp, final JVppRegistry registry,
+                                        final Map<Integer, CompletableFuture<? extends JVppReply<?>>> requestMap) {
+        this.jvpp =  Objects.requireNonNull(jvpp, "jvpp should not be null");
+        this.registry =  Objects.requireNonNull(registry, "registry should not be null");
+        // Request map represents the shared state between this facade and it's callback
+        // where facade puts futures in and callback completes + removes them
+        this.requests = Objects.requireNonNull(requestMap, "Null requestMap");
+    }
+
+    protected final Map<Integer, CompletableFuture<? extends JVppReply<?>>> getRequests() {
+        synchronized (requests) {
+            return requests;
+        }
+    }
+
+    // TODO use Optional in Future, java8
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public <REQ extends JVppRequest, REPLY extends JVppReply<REQ>> CompletionStage<REPLY> send(REQ req) {
+        try {
+            // jvpp.send() can go to waiting state if sending queue is full, putting it into same
+            // synchronization block as used by receiving part (synchronized(requests)) can lead
+            // to deadlock between these two sides or at least slowing sending process by slow
+            // reader
+            final CompletableFuture<REPLY> replyCompletableFuture;
+            final int contextId = jvpp.send(req);
+
+            if(req instanceof JVppDump) {
+                throw new IllegalArgumentException("Send with empty reply dump has to be used in case of dump calls");
+            }
+
+            synchronized(requests) {
+                CompletableFuture<? extends JVppReply<?>> replyFuture = requests.get(contextId);
+                if (replyFuture == null) {
+                    // reply not yet received, put new future into map
+                    replyCompletableFuture = new CompletableFuture<>();
+                    requests.put(contextId, replyCompletableFuture);
+                } else {
+                    // reply already received (should be completed by reader),
+                    // remove future from map and return it to caller
+                    replyCompletableFuture = (CompletableFuture<REPLY>) replyFuture;
+                    requests.remove(contextId);
+                }
+            }
+
+            // TODO in case of timeouts/missing replies, requests from the map are not removed
+            // consider adding cancel method, that would remove requests from the map and cancel
+            // associated replyCompletableFuture
+
+            return replyCompletableFuture;
+        } catch (VppInvocationException ex) {
+            final CompletableFuture<REPLY> replyCompletableFuture = new CompletableFuture<>();
+            replyCompletableFuture.completeExceptionally(ex);
+            return replyCompletableFuture;
+        }
+    }
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public <REQ extends JVppRequest, REPLY extends JVppReply<REQ>, DUMP extends JVppReplyDump<REQ, REPLY>> CompletionStage<DUMP> send(
+            REQ req, DUMP emptyReplyDump) {
+      try {
+          // jvpp.send() and registry.controlPing() can go to waiting state if sending queue is full,
+          // putting it into same synchronization block as used by receiving part (synchronized(requests))
+          // can lead to deadlock between these two sides or at least slowing sending process by slow reader
+          final CompletableDumpFuture<DUMP> replyDumpFuture;
+          final int contextId = jvpp.send(req);
+
+          if(!(req instanceof JVppDump)) {
+              throw new IllegalArgumentException("Send without empty reply dump has to be used in case of regular calls");
+          }
+
+          synchronized(requests) {
+              CompletableFuture<? extends JVppReply<?>> replyFuture = requests.get(contextId);
+              if (replyFuture == null) {
+                  // reply not received yet, put new future to map
+                  replyDumpFuture = new CompletableDumpFuture<>(contextId, emptyReplyDump);
+                  requests.put(contextId, replyDumpFuture);
+              } else {
+                  // reply already received, save existing future
+                  replyDumpFuture = (CompletableDumpFuture<DUMP>) replyFuture;
+              }
+          }
+
+          final int pingId = registry.controlPing(jvpp.getClass());
+
+          synchronized(requests) {
+              if (requests.remove(pingId) == null) {
+                  // reply not received yet, put future into map under pingId
+                  requests.put(pingId, replyDumpFuture);
+              } else {
+                  // reply already received, complete future
+                  // ping reply couldn't complete the future because it is not in map under
+                  // ping id
+                  replyDumpFuture.complete(replyDumpFuture.getReplyDump());
+                  requests.remove(contextId);
+              }
+          }
+
+          // TODO in case of timeouts/missing replies, requests from the map are not removed
+          // consider adding cancel method, that would remove requests from the map and cancel
+          // associated replyCompletableFuture
+
+          return replyDumpFuture;
+      } catch (VppInvocationException ex) {
+          final CompletableFuture<DUMP> replyCompletableFuture = new CompletableFuture<>();
+          replyCompletableFuture.completeExceptionally(ex);
+          return replyCompletableFuture;
+      }
+    }
+
+    public static final class CompletableDumpFuture<T extends JVppReplyDump<?, ?>> extends CompletableFuture<T> {
+        private final T replyDump;
+        private final int contextId;
+
+        public CompletableDumpFuture(final int contextId, final T emptyDump) {
+            this.contextId = contextId;
+            this.replyDump = emptyDump;
+        }
+
+        public int getContextId() {
+            return contextId;
+        }
+
+        public T getReplyDump() {
+            return replyDump;
+        }
+    }
+
+    @Override
+    public void close() throws Exception {
+        jvpp.close();
+    }
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/future/FutureJVppInvoker.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/future/FutureJVppInvoker.java
new file mode 100644
index 00000000000..65250ed5a8f
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/future/FutureJVppInvoker.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.future;
+
+
+import io.fd.vpp.jvpp.dto.JVppReply;
+import io.fd.vpp.jvpp.dto.JVppReplyDump;
+import io.fd.vpp.jvpp.dto.JVppRequest;
+
+import java.util.concurrent.CompletionStage;
+import io.fd.vpp.jvpp.notification.EventRegistryProvider;
+
+/**
+* Future facade on top of JVpp
+*/
+public interface FutureJVppInvoker extends EventRegistryProvider, AutoCloseable {
+
+    /**
+     * Invoke asynchronous operation on VPP
+     *
+     * @return CompletionStage with future result of an async VPP call
+     * @throws io.fd.vpp.jvpp.VppInvocationException when send request failed with details
+     */
+    <REQ extends JVppRequest, REPLY extends JVppReply<REQ>> CompletionStage<REPLY> send(REQ req);
+
+
+    /**
+     * Invoke asynchronous dump operation on VPP
+     *
+     * @return CompletionStage with aggregated future result of an async VPP dump call
+     * @throws io.fd.vpp.jvpp.VppInvocationException when send request failed with details
+     */
+    <REQ extends JVppRequest, REPLY extends JVppReply<REQ>, DUMP extends JVppReplyDump<REQ, REPLY>> CompletionStage<DUMP> send(
+            REQ req, DUMP emptyReplyDump);
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/notification/EventRegistry.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/notification/EventRegistry.java
new file mode 100644
index 00000000000..12515a519e7
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/notification/EventRegistry.java
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.notification;
+
+/**
+ * Base registry for notification callbacks.
+ */
+public interface EventRegistry extends AutoCloseable {
+
+    void close();
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/notification/EventRegistryProvider.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/notification/EventRegistryProvider.java
new file mode 100644
index 00000000000..1ac5d55335b
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/notification/EventRegistryProvider.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.notification;
+
+/**
+ * Provides notification registry
+ */
+public interface EventRegistryProvider {
+
+    /**
+     * Get current notification registry instance
+     */
+    EventRegistry getEventRegistry();
+}
diff --git a/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/test/ConnectionTest.java b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/test/ConnectionTest.java
new file mode 100644
index 00000000000..27b4d29f866
--- /dev/null
+++ b/extras/japi/java/jvpp-registry/io/fd/vpp/jvpp/test/ConnectionTest.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.vpp.jvpp.test;
+
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.JVppRegistryImpl;
+
+/**
+ * Run using:
+ * sudo java -cp build-vpp-native/vpp-api/java/jvpp-registry-16.09.jar io.fd.vpp.jvpp.test.ConnectionTest
+ */
+public class ConnectionTest {
+
+    private static void testConnect() throws Exception {
+        System.out.println("Testing JNI connection with JVppRegistry");
+        final JVppRegistry registry = new JVppRegistryImpl("ConnectionTest");
+        try {
+            System.out.println("Successfully connected to vpp");
+            Thread.sleep(5000);
+            System.out.println("Disconnecting...");
+            Thread.sleep(1000);
+        } finally {
+            registry.close();
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        testConnect();
+    }
+}