pcep/topology/topology-stats/src/main/java/org/opendaylight/bgpcep/pcep/topology/stats/provider/TopologyStatsProviderImpl.java

   1 /*
   2  * Copyright (c) 2017 AT&T Intellectual Property. 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.bgpcep.pcep.topology.stats.provider;
  10
  11 import static java.util.Objects.requireNonNull;
  12
  13 import io.netty.util.concurrent.GlobalEventExecutor;
  14 import io.netty.util.concurrent.ScheduledFuture;
  15 import java.util.HashMap;
  16 import java.util.Map;
  17 import java.util.TimerTask;
  18 import java.util.concurrent.ExecutionException;
  19 import java.util.concurrent.TimeUnit;
  20 import javax.annotation.Nonnull;
  21 import javax.annotation.concurrent.GuardedBy;
  22 import org.opendaylight.bgpcep.pcep.topology.spi.stats.TopologySessionStatsRegistry;
  23 import org.opendaylight.controller.md.sal.binding.api.BindingTransactionChain;
  24 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  25 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  26 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  27 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  28 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
  29 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.stats.rev171113.PcepSessionState;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.stats.rev171113.pcep.session.state.grouping.PcepSessionStateBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.stats.rev171113.PcepTopologyNodeStatsAug;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.stats.rev171113.PcepTopologyNodeStatsAugBuilder;
  34 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  35 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  36 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  37 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41 public final class TopologyStatsProviderImpl implements TransactionChainListener,
  42         TopologySessionStatsRegistry,   AutoCloseable {
  43
  44     private static final Logger LOG = LoggerFactory.getLogger(TopologyStatsProviderImpl.class);
  45     @GuardedBy("this")
  46     private final Map<KeyedInstanceIdentifier<Node, NodeKey>, PcepSessionState> statsMap = new HashMap<>();
  47     private final DataBroker dataBroker;
  48     private final int timeout;
  49     private BindingTransactionChain transactionChain;
  50     private ScheduledFuture<?> scheduleTask;
  51
  52     public TopologyStatsProviderImpl(@Nonnull final DataBroker dataBroker, final int timeout) {
  53         this.dataBroker = requireNonNull(dataBroker);
  54         this.timeout = timeout;
  55     }
  56
  57     public void init() {
  58         LOG.info("Initializing TopologyStatsProvider service.", this);
  59         this.transactionChain = this.dataBroker.createTransactionChain(this);
  60         final TimerTask task = new TimerTask() {
  61             @Override
  62             public void run() {
  63                 synchronized (TopologyStatsProviderImpl.this) {
  64                     final WriteTransaction tx = TopologyStatsProviderImpl
  65                             .this.transactionChain.newWriteOnlyTransaction();
  66
  67                     TopologyStatsProviderImpl.this.statsMap
  68                             .forEach((key, value) -> updatePCEPStats(key, value, tx));
  69                     tx.submit();
  70                 }
  71             }
  72         };
  73
  74         this.scheduleTask = GlobalEventExecutor.INSTANCE.scheduleAtFixedRate(task, 0, this.timeout,
  75                 TimeUnit.SECONDS);
  76     }
  77
  78     private synchronized void updatePCEPStats(
  79             final KeyedInstanceIdentifier<Node, NodeKey> nodeIId,
  80             final PcepSessionState stats,
  81             final WriteTransaction tx) {
  82
  83         final PcepTopologyNodeStatsAug nodeStatsAug = new PcepTopologyNodeStatsAugBuilder()
  84                 .setPcepSessionState(new PcepSessionStateBuilder(stats).build()).build();
  85         final InstanceIdentifier<PcepTopologyNodeStatsAug> statId =
  86                 nodeIId.augmentation(PcepTopologyNodeStatsAug.class);
  87         tx.put(LogicalDatastoreType.OPERATIONAL, statId, nodeStatsAug);
  88     }
  89
  90     @Override
  91     public void close() throws Exception {
  92         LOG.info("Closing TopologyStatsProvider service.", this);
  93         this.scheduleTask.cancel(true);
  94         final WriteTransaction wTx = this.transactionChain.newWriteOnlyTransaction();
  95         this.statsMap.keySet().iterator().forEachRemaining(statId ->
  96                 wTx.delete(LogicalDatastoreType.OPERATIONAL, statId));
  97         wTx.submit().get();
  98         this.statsMap.clear();
  99         this.transactionChain.close();
 100     }
 101
 102     @Override
 103     public void onTransactionChainFailed(final TransactionChain<?, ?> chain, final AsyncTransaction<?, ?> transaction,
 104             final Throwable cause) {
 105         LOG.error("Transaction chain failed {}.", transaction != null ? transaction.getIdentifier() : null, cause);
 106     }
 107
 108     @Override
 109     public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
 110         LOG.debug("Transaction chain {} successful.", chain);
 111     }
 112
 113     @Override
 114     public synchronized void bind(final KeyedInstanceIdentifier<Node, NodeKey> nodeId,
 115             final PcepSessionState sessionState) {
 116         this.statsMap.put(nodeId, sessionState);
 117     }
 118
 119     @Override
 120     public synchronized void unbind(final KeyedInstanceIdentifier<Node, NodeKey> nodeId) {
 121         this.statsMap.remove(nodeId);
 122         final WriteTransaction wTx = this.transactionChain.newWriteOnlyTransaction();
 123         wTx.delete(LogicalDatastoreType.OPERATIONAL, nodeId);
 124         try {
 125             wTx.submit().get();
 126         } catch (final InterruptedException | ExecutionException e) {
 127             LOG.warn("Failed to remove Pcep Node stats {}.", nodeId.getKey().getNodeId());
 128         }
 129     }
 130 }