1 files changed, 55 insertions, 0 deletions
diff --git a/vpp-common/minimal-distribution/src/main/java/io/fd/honeycomb/vpp/distro/JVppRegistryProvider.groovy b/vpp-common/minimal-distribution/src/main/java/io/fd/honeycomb/vpp/distro/JVppRegistryProvider.groovy
new file mode 100644
index 000000000..125f7660b
--- /dev/null
+++ b/vpp-common/minimal-distribution/src/main/java/io/fd/honeycomb/vpp/distro/JVppRegistryProvider.groovy
@@ -0,0 +1,55 @@
+/*
+ * 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.distro
+
+import com.google.inject.Inject
+import groovy.transform.ToString
+import groovy.util.logging.Slf4j
+import io.fd.honeycomb.infra.distro.ProviderTrait
+import org.openvpp.jvpp.JVppRegistry
+import org.openvpp.jvpp.JVppRegistryImpl
+
+/**
+ * Provides JVppRegistry. Must be a singleton due to shutdown hook usage.
+ * Registers shutdown hook to disconnect from VPP.
+ */
+@Slf4j
+@ToString
+class JVppRegistryProvider extends ProviderTrait<JVppRegistry> {
+
+    @Inject
+    VppConfigAttributes config
+
+    def create() {
+        try {
+            def registry = new JVppRegistryImpl(config.jvppConnectionName);
+
+            // Closing JVpp connection with shutdown hook to erase the connection from VPP so HC will be able
+            // to connect next time. If JVM is force closed, this will not be executed and VPP connection
+            // with name from config will stay open and prevent next startup of HC to success
+            Runtime.addShutdownHook {
+                log.info("Disconnecting from VPP")
+                registry.close()
+                log.info("Successfully disconnected from VPP as {}", config.jvppConnectionName)
+            }
+            log.info("JVpp connection opened successfully as: {}", config.jvppConnectionName)
+            registry
+        } catch (IOException e) {
+            throw new IllegalStateException("Unable to open VPP management connection", e)
+        }
+    }
+}