diff options
Diffstat (limited to 'vpp-common/vpp-common-integration/src/main/java/io/fd/hc2vpp/common/integration/JVppRegistryProvider.java')
-rw-r--r-- | vpp-common/vpp-common-integration/src/main/java/io/fd/hc2vpp/common/integration/JVppRegistryProvider.java | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/vpp-common/vpp-common-integration/src/main/java/io/fd/hc2vpp/common/integration/JVppRegistryProvider.java b/vpp-common/vpp-common-integration/src/main/java/io/fd/hc2vpp/common/integration/JVppRegistryProvider.java new file mode 100644 index 000000000..ccd31ef01 --- /dev/null +++ b/vpp-common/vpp-common-integration/src/main/java/io/fd/hc2vpp/common/integration/JVppRegistryProvider.java @@ -0,0 +1,72 @@ +/* + * 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.hc2vpp.common.integration; + +import com.google.inject.Inject; +import io.fd.honeycomb.infra.distro.ProviderTrait; +import io.fd.hc2vpp.common.translate.util.VppStatusListener; +import java.io.IOException; +import io.fd.vpp.jvpp.JVppRegistry; +import io.fd.vpp.jvpp.JVppRegistryImpl; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Provides JVppRegistry. Must be a singleton due to shutdown hook usage. Registers shutdown hook to disconnect from + * VPP. + */ +public final class JVppRegistryProvider extends ProviderTrait<JVppRegistry> { + + private static final Logger LOG = LoggerFactory.getLogger(JVppRegistryProvider.class); + + @Inject + private VppConfigAttributes config; + @Inject + private VppStatusListener vppStatus; + + @Override + protected JVppRegistryImpl create() { + try { + final JVppRegistryImpl 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.getRuntime().addShutdownHook(new Thread() { + @Override + public void run() { + LOG.info("Disconnecting from VPP"); + if (vppStatus.isDown()) { + LOG.info("VPP is down. JVppRegistry cleanup is not needed. Exiting"); + return; + } + try { + registry.close(); + LOG.info("Successfully disconnected from VPP as {}", config.jvppConnectionName); + } catch (Exception e) { + LOG.warn("Unable to properly close jvpp registry", e); + } + } + }); + + LOG.info("JVpp connection opened successfully as: {}", config.jvppConnectionName); + return registry; + } catch (IOException e) { + throw new IllegalStateException("Unable to open VPP management connection", e); + } + } +} |