gerrit.fd Code Review - hc2vpp.git/blob

   1 package org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406;
   2
   3 import io.fd.honeycomb.v3po.translate.impl.read.CompositeChildReader;
   4 import io.fd.honeycomb.v3po.translate.impl.read.CompositeListReader;
   5 import io.fd.honeycomb.v3po.translate.impl.read.CompositeRootReader;
   6 import io.fd.honeycomb.v3po.translate.read.ChildReader;
   7 import io.fd.honeycomb.v3po.translate.util.KeepaliveReaderWrapper;
   8 import io.fd.honeycomb.v3po.translate.util.RWUtils;
   9 import io.fd.honeycomb.v3po.translate.util.read.CloseableReader;
  10 import io.fd.honeycomb.v3po.translate.util.read.ReflexiveChildReaderCustomizer;
  11 import io.fd.honeycomb.v3po.translate.util.read.ReflexiveRootReaderCustomizer;
  12 import io.fd.honeycomb.v3po.translate.v3po.util.ReadTimeoutException;
  13 import io.fd.honeycomb.v3po.translate.v3po.vppstate.BridgeDomainCustomizer;
  14 import io.fd.honeycomb.v3po.translate.v3po.vppstate.VersionCustomizer;
  15 import java.lang.management.ManagementFactory;
  16 import java.util.ArrayList;
  17 import java.util.List;
  18 import javax.management.Attribute;
  19 import javax.management.InstanceNotFoundException;
  20 import javax.management.ObjectName;
  21 import org.opendaylight.controller.config.api.ConflictingVersionException;
  22 import org.opendaylight.controller.config.api.ValidationException;
  23 import org.opendaylight.controller.config.util.ConfigRegistryJMXClient;
  24 import org.opendaylight.controller.config.util.ConfigTransactionJMXClient;
  25 import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.vpp.jvpp.cfg.rev160406.VppJvppImplModule;
  26 import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.vpp.jvpp.cfg.rev160406.VppJvppImplModuleFactory;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppState;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppStateBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.BridgeDomains;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.BridgeDomainsBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.Version;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomain;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomainBuilder;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.state.bridge.domains.BridgeDomainKey;
  35 import org.opendaylight.yangtools.yang.binding.ChildOf;
  36 import org.openvpp.jvpp.future.FutureJVpp;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 public class VppStateHoneycombReaderModule extends org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.v3po2vpp.rev160406.AbstractVppStateHoneycombReaderModule {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(VppStateHoneycombReaderModule.class);
  43
  44     public VppStateHoneycombReaderModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
  45         super(identifier, dependencyResolver);
  46     }
  47
  48     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) {
  49         super(identifier, dependencyResolver, oldModule, oldInstance);
  50     }
  51
  52     @Override
  53     public void customValidation() {
  54         // add custom validation form module attributes here.
  55     }
  56
  57     @Override
  58     public java.lang.AutoCloseable createInstance() {
  59         final FutureJVpp vppApi = getVppJvppDependency();
  60
  61         ChildReader<Version> versionReader = new CompositeChildReader<>(Version.class, new VersionCustomizer(vppApi));
  62         // Wrap with keepalive reader to detect connection issues
  63         // TODO keepalive reader wrapper relies on VersionReaderCustomizer (to perform timeout on reads)
  64         // Once readers+customizers are asynchronous, pull the timeout to keepalive executor so that keepalive wrapper
  65         // is truly generic
  66         versionReader = new KeepaliveReaderWrapper<>(versionReader, getKeepaliveExecutorDependency().getExecutor(),
  67             ReadTimeoutException.class, 30, () -> reinitializeJVpp(reinitializationCounter));
  68
  69         final CompositeListReader<BridgeDomain, BridgeDomainKey, BridgeDomainBuilder> bridgeDomainReader =
  70             new CompositeListReader<>(BridgeDomain.class, new BridgeDomainCustomizer(vppApi,
  71                 getBridgeDomainContextVppStateDependency(), getInterfaceContextVppStateDependency()));
  72
  73         final ChildReader<BridgeDomains> bridgeDomainsReader = new CompositeChildReader<>(
  74             BridgeDomains.class,
  75             RWUtils.singletonChildReaderList(bridgeDomainReader),
  76             new ReflexiveChildReaderCustomizer<>(BridgeDomainsBuilder.class));
  77
  78         final List<ChildReader<? extends ChildOf<VppState>>> childVppReaders = new ArrayList<>();
  79         childVppReaders.add(versionReader);
  80         childVppReaders.add(bridgeDomainsReader);
  81
  82         return new CloseableReader<>(new CompositeRootReader<>(
  83             VppState.class,
  84             childVppReaders,
  85             RWUtils.emptyAugReaderList(),
  86             new ReflexiveRootReaderCustomizer<>(VppStateBuilder.class)));
  87     }
  88
  89     private static long reinitializationCounter;
  90     private static final long reinitializationLimit = 10;
  91
  92     /**
  93      * In case we detect connection issues with VPP, reinitialize JVpp
  94      */
  95     private void reinitializeJVpp(final long currentAttempt) {
  96         // FIXME https://jira.fd.io/browse/HONEYCOMB-78 This code correctly re-initializes all the components
  97         // starting with jvpp, but jvpp reconnect fails. Test in a JVpp test and then from C
  98         LOG.info("Reinitializing JVpp, attempt: {}", currentAttempt);
  99
 100         final long nextAttempt = currentAttempt + 1;
 101         if (nextAttempt - reinitializationCounter > reinitializationLimit) {
 102             LOG.error("Too many JVpp reinitialization attempts. Unable to reinitialize JVpp in {} attempts. Giving up",
 103                 reinitializationLimit);
 104             throw new IllegalStateException("Too many JVpp reinitialization attempts. Unable to reinitialize JVpp in "
 105                 + reinitializationLimit + " attempts. Giving up");
 106         }
 107
 108         final ConfigRegistryJMXClient cfgRegistryClient =
 109             ConfigRegistryJMXClient.createWithoutNotifications(ManagementFactory.getPlatformMBeanServer());
 110
 111         final ObjectName objectName = cfgRegistryClient.beginConfig();
 112         final ConfigTransactionJMXClient txClient = cfgRegistryClient.getConfigTransactionClient(objectName);
 113
 114         final ObjectName jvppOn;
 115         try {
 116             final String attributeName = VppJvppImplModule.descriptionJmxAttribute.getAttributeName();
 117             final String factoryName = VppJvppImplModuleFactory.NAME;
 118             jvppOn = txClient.lookupConfigBean(factoryName, "vpp-jvpp");
 119
 120             // Change configuration attribute of JVpp to trigger full reinitialization here using config subsystem
 121             // TODO improve this when switching from karaf in planned minimal distribution
 122             txClient.setAttribute(jvppOn, attributeName, new Attribute(attributeName,
 123                 Long.toString(nextAttempt)));
 124
 125             txClient.validateConfig();
 126             cfgRegistryClient.commitConfig(txClient.getObjectName());
 127             LOG.info("JVpp reinitialized successfully");
 128         } catch (InstanceNotFoundException | ValidationException e) {
 129             LOG.error("Unable to reinitialize JVpp. Honeycomb will not work properly from now on.", e);
 130             throw new IllegalStateException("Unable to find jvpp instance in config subsystem. " +
 131                 "Unable to reinitialize JVpp", e);
 132         } catch (ConflictingVersionException e) {
 133             LOG.debug("Conflict changes occurred, retrying", e);
 134             // Just retry until there's no conflicting change in progress
 135             reinitializeJVpp(nextAttempt);
 136         }
 137
 138         reinitializationCounter = nextAttempt;
 139     }
 140 }