1 files changed, 61 insertions, 0 deletions
diff --git a/vpp-common/vpp-common-integration/src/main/java/io/fd/honeycomb/vpp/common/integration/JVppCoreProvider.java b/vpp-common/vpp-common-integration/src/main/java/io/fd/honeycomb/vpp/common/integration/JVppCoreProvider.java
new file mode 100644
index 000000000..bbd30fbfb
--- /dev/null
+++ b/vpp-common/vpp-common-integration/src/main/java/io/fd/honeycomb/vpp/common/integration/JVppCoreProvider.java
@@ -0,0 +1,61 @@
+/*
+ * 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.honeycomb.vpp.common.integration;
+
+import com.google.inject.Inject;
+import io.fd.honeycomb.infra.distro.ProviderTrait;
+import java.io.IOException;
+import io.fd.vpp.jvpp.JVppRegistry;
+import io.fd.vpp.jvpp.core.JVppCoreImpl;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
+import io.fd.vpp.jvpp.core.future.FutureJVppCoreFacade;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Provides future API for jvpp-core plugin. Must be a singleton due to shutdown hook usage. Registers shutdown hook to
+ * free plugin's resources on shutdown.
+ */
+public final class JVppCoreProvider extends ProviderTrait<FutureJVppCore> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(JVppCoreProvider.class);
+
+    @Inject
+    private JVppRegistry registry;
+
+    @Override
+    protected FutureJVppCoreFacade create() {
+        try {
+            final JVppCoreImpl jVpp = new JVppCoreImpl();
+            // Free jvpp-core plugin's resources on shutdown
+            Runtime.getRuntime().addShutdownHook(new Thread() {
+
+                @Override
+                public void run() {
+                    LOG.info("Unloading jvpp-core plugin");
+                    jVpp.close();
+                    LOG.info("Successfully unloaded jvpp-core plugin");
+                }
+            });
+
+            LOG.info("Successfully loaded jvpp-core plugin");
+            return new FutureJVppCoreFacade(registry, jVpp);
+        } catch (IOException e) {
+            throw new IllegalStateException("Unable to open VPP management connection", e);
+        }
+    }
+}