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package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406;
import io.fd.honeycomb.translate.v3po.VppStateHoneycombReaderFactory;
import java.lang.management.ManagementFactory;
import javax.management.Attribute;
import javax.management.InstanceNotFoundException;
import javax.management.ObjectName;
import org.opendaylight.controller.config.api.ConflictingVersionException;
import org.opendaylight.controller.config.api.ValidationException;
import org.opendaylight.controller.config.util.ConfigRegistryJMXClient;
import org.opendaylight.controller.config.util.ConfigTransactionJMXClient;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.vpp.jvpp.cfg.rev160406.VppJvppImplModule;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.vpp.jvpp.cfg.rev160406.VppJvppImplModuleFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class VppStateHoneycombReaderModule extends
org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.AbstractVppStateHoneycombReaderModule {
private static final Logger LOG = LoggerFactory.getLogger(VppStateHoneycombReaderModule.class);
public VppStateHoneycombReaderModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier,
org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
super(identifier, dependencyResolver);
}
public VppStateHoneycombReaderModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier,
org.opendaylight.controller.config.api.DependencyResolver dependencyResolver,
org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.VppStateHoneycombReaderModule oldModule,
java.lang.AutoCloseable oldInstance) {
super(identifier, dependencyResolver, oldModule, oldInstance);
}
@Override
public void customValidation() {
// add custom validation form module attributes here.
}
@Override
public java.lang.AutoCloseable createInstance() {
return new VppStateHoneycombReaderFactory(getVppJvppDependency(),
getInterfaceContextVppStateDependency(),
getBridgeDomainContextVppStateDependency(),
getKeepaliveExecutorDependency());
}
private static long reinitializationCounter;
private static final long reinitializationLimit = 10;
/**
* In case we detect connection issues with VPP, reinitialize JVpp.
*/
private static void reinitializeJVpp(final long currentAttempt) {
// FIXME https://jira.fd.io/browse/HONEYCOMB-78 This code correctly re-initializes all the components
// starting with jvpp, but jvpp reconnect fails. Test in a JVpp test and then from C
LOG.info("Reinitializing JVpp, attempt: {}", currentAttempt);
final long nextAttempt = currentAttempt + 1;
if (nextAttempt - reinitializationCounter > reinitializationLimit) {
LOG.error("Too many JVpp reinitialization attempts. Unable to reinitialize JVpp in {} attempts. Giving up",
reinitializationLimit);
throw new IllegalStateException("Too many JVpp reinitialization attempts. Unable to reinitialize JVpp in "
+ reinitializationLimit + " attempts. Giving up");
}
final ConfigRegistryJMXClient cfgRegistryClient =
ConfigRegistryJMXClient.createWithoutNotifications(ManagementFactory.getPlatformMBeanServer());
final ObjectName objectName = cfgRegistryClient.beginConfig();
final ConfigTransactionJMXClient txClient = cfgRegistryClient.getConfigTransactionClient(objectName);
final ObjectName jvppOn;
try {
final String attributeName = VppJvppImplModule.descriptionJmxAttribute.getAttributeName();
final String factoryName = VppJvppImplModuleFactory.NAME;
jvppOn = txClient.lookupConfigBean(factoryName, "vpp-jvpp");
// Change configuration attribute of JVpp to trigger full reinitialization here using config subsystem
// TODO improve this when switching from karaf in planned minimal distribution
txClient.setAttribute(jvppOn, attributeName, new Attribute(attributeName,
Long.toString(nextAttempt)));
txClient.validateConfig();
cfgRegistryClient.commitConfig(txClient.getObjectName());
LOG.info("JVpp reinitialized successfully");
} catch (InstanceNotFoundException | ValidationException e) {
LOG.error("Unable to reinitialize JVpp. Honeycomb will not work properly from now on.", e);
throw new IllegalStateException("Unable to find jvpp instance in config subsystem. Unable to reinitialize JVpp", e);
} catch (ConflictingVersionException e) {
LOG.debug("Conflict changes occurred, retrying", e);
// Just retry until there's no conflicting change in progress
reinitializeJVpp(nextAttempt);
}
reinitializationCounter = nextAttempt;
}
}
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