mdsalutil/mdsalutil-impl/src/main/java/org/opendaylight/genius/mdsalutil/internal/UpgradeStateListener.java

   1 /*
   2  * Copyright (c) 2017 Red Hat, Inc. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.genius.mdsalutil.internal;
  10
  11 import java.util.concurrent.atomic.AtomicBoolean;
  12 import javax.annotation.Nonnull;
  13 import javax.inject.Inject;
  14 import javax.inject.Singleton;
  15
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  20 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  21 import org.opendaylight.genius.mdsalutil.UpgradeState;
  22 import org.opendaylight.genius.tools.mdsal.listener.AbstractClusteredSyncDataTreeChangeListener;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsalutil.rev170830.Config;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25 import org.ops4j.pax.cdi.api.OsgiService;
  26 import org.ops4j.pax.cdi.api.OsgiServiceProvider;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 @Singleton
  31 @OsgiServiceProvider(classes = UpgradeState.class)
  32 public class UpgradeStateListener extends AbstractClusteredSyncDataTreeChangeListener<Config> implements UpgradeState {
  33     private static final Logger LOG = LoggerFactory.getLogger(UpgradeStateListener.class);
  34
  35     private final AtomicBoolean isUpgradeInProgress = new AtomicBoolean(false);
  36
  37     @Inject
  38     public UpgradeStateListener(@OsgiService final DataBroker dataBroker, final Config config) {
  39         super(dataBroker, new DataTreeIdentifier<>(
  40                 LogicalDatastoreType.CONFIGURATION, InstanceIdentifier.create(Config.class)));
  41         // When this config value is set from a file it is not accessible via the yang tree...
  42         // so we just write it once here just in case.
  43         try {
  44             SingleTransactionDataBroker.syncWrite(dataBroker, LogicalDatastoreType.CONFIGURATION,
  45                     InstanceIdentifier.create(Config.class), config);
  46         } catch (TransactionCommitFailedException e) {
  47             LOG.error("Failed to write mdsalutil config", e);
  48         }
  49     }
  50
  51     @Override
  52     public boolean isUpgradeInProgress() {
  53         return isUpgradeInProgress.get();
  54     }
  55
  56     @Override
  57     public void add(@Nonnull InstanceIdentifier<Config> instanceIdentifier, @Nonnull Config config) {
  58         isUpgradeInProgress.set(config.isUpgradeInProgress());
  59         LOG.info("UpgradeStateListener.add: isUpgradeInProgress = {}", config.isUpgradeInProgress());
  60     }
  61
  62     @Override
  63     public void remove(@Nonnull InstanceIdentifier<Config> instanceIdentifier, @Nonnull Config config) {
  64         isUpgradeInProgress.set(false);
  65         LOG.info("UpgradeStateListener.remove: isUpgradeInProgress = {}", false);
  66     }
  67
  68     @Override
  69     public void update(@Nonnull InstanceIdentifier<Config> instanceIdentifier,
  70                        @Nonnull Config originalConfig, @Nonnull Config updatedConfig) {
  71         isUpgradeInProgress.set(updatedConfig.isUpgradeInProgress());
  72         LOG.info("UpgradeStateListener.update: isUpgradeInProgress = {}", updatedConfig.isUpgradeInProgress());
  73     }
  74 }