2 * Copyright (c) 2017 AT&T Intellectual Property. All rights reserved.
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
9 package org.opendaylight.bgpcep.pcep.topology.stats.provider;
11 import static java.util.Objects.requireNonNull;
12 import static java.util.concurrent.TimeUnit.SECONDS;
14 import com.google.common.util.concurrent.FutureCallback;
15 import com.google.common.util.concurrent.MoreExecutors;
16 import java.util.HashMap;
18 import java.util.TimerTask;
19 import java.util.concurrent.ExecutionException;
20 import java.util.concurrent.Executors;
21 import java.util.concurrent.ScheduledExecutorService;
22 import java.util.concurrent.ScheduledFuture;
23 import java.util.concurrent.atomic.AtomicBoolean;
24 import javax.annotation.Nonnull;
25 import javax.annotation.concurrent.GuardedBy;
26 import org.opendaylight.bgpcep.pcep.topology.spi.stats.TopologySessionStatsRegistry;
27 import org.opendaylight.mdsal.binding.api.DataBroker;
28 import org.opendaylight.mdsal.binding.api.Transaction;
29 import org.opendaylight.mdsal.binding.api.TransactionChain;
30 import org.opendaylight.mdsal.binding.api.TransactionChainListener;
31 import org.opendaylight.mdsal.binding.api.WriteTransaction;
32 import org.opendaylight.mdsal.common.api.CommitInfo;
33 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.stats.rev171113.PcepSessionState;
35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.stats.rev171113.pcep.session.state.grouping.PcepSessionStateBuilder;
36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.stats.rev181109.PcepTopologyNodeStatsAug;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.stats.rev181109.PcepTopologyNodeStatsAugBuilder;
38 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
39 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
40 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
41 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
45 public final class TopologyStatsProviderImpl implements TransactionChainListener,
46 TopologySessionStatsRegistry, AutoCloseable {
48 private static final Logger LOG = LoggerFactory.getLogger(TopologyStatsProviderImpl.class);
50 private final Map<KeyedInstanceIdentifier<Node, NodeKey>, PcepSessionState> statsMap = new HashMap<>();
51 private final DataBroker dataBroker;
52 private final int timeout;
53 private TransactionChain transactionChain;
54 private ScheduledFuture<?> scheduleTask;
55 private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
56 private final AtomicBoolean closed = new AtomicBoolean(false);
58 public TopologyStatsProviderImpl(@Nonnull final DataBroker dataBroker, final int timeout) {
59 this.dataBroker = requireNonNull(dataBroker);
60 this.timeout = timeout;
63 public synchronized void init() {
64 LOG.info("Initializing TopologyStatsProvider service.");
65 this.transactionChain = this.dataBroker.createTransactionChain(this);
66 final TimerTask task = new TimerTask() {
73 this.scheduleTask = this.scheduler.scheduleAtFixedRate(task, 0, this.timeout, SECONDS);
76 @SuppressWarnings("checkstyle:IllegalCatch")
77 private synchronized void updatePcepStats() {
78 final WriteTransaction tx = TopologyStatsProviderImpl.this.transactionChain.newWriteOnlyTransaction();
81 for (final Map.Entry<KeyedInstanceIdentifier<Node, NodeKey>, PcepSessionState> entry
82 : this.statsMap.entrySet()) {
83 final PcepTopologyNodeStatsAug nodeStatsAug = new PcepTopologyNodeStatsAugBuilder()
84 .setPcepSessionState(new PcepSessionStateBuilder(entry.getValue()).build()).build();
85 final InstanceIdentifier<PcepTopologyNodeStatsAug> statId =
86 entry.getKey().augmentation(PcepTopologyNodeStatsAug.class);
87 tx.put(LogicalDatastoreType.OPERATIONAL, statId, nodeStatsAug);
89 tx.commit().addCallback(new FutureCallback<CommitInfo>() {
91 public void onSuccess(final CommitInfo result) {
92 LOG.debug("Successfully committed Topology stats update");
96 public void onFailure(final Throwable ex) {
97 LOG.error("Failed to commit Topology stats update", ex);
99 }, MoreExecutors.directExecutor());
100 } catch (final Exception e) {
101 LOG.warn("Failed to prepare Tx for BGP stats update", e);
107 public synchronized void close() throws Exception {
108 if (closed.compareAndSet(false, true)) {
109 LOG.info("Closing TopologyStatsProvider service.");
110 this.scheduleTask.cancel(true);
111 final WriteTransaction wTx = this.transactionChain.newWriteOnlyTransaction();
112 for (final KeyedInstanceIdentifier<Node, NodeKey> statId : this.statsMap.keySet()) {
113 wTx.delete(LogicalDatastoreType.OPERATIONAL, statId);
116 this.statsMap.clear();
117 this.transactionChain.close();
118 this.scheduler.shutdown();
123 public synchronized void onTransactionChainFailed(final TransactionChain chain,
124 final Transaction transaction, final Throwable cause) {
125 LOG.error("Transaction chain {} failed for tx {}",
126 chain, transaction != null ? transaction.getIdentifier() : null, cause);
129 transactionChain.close();
130 transactionChain = dataBroker.createTransactionChain(this);
135 public synchronized void onTransactionChainSuccessful(final TransactionChain chain) {
136 LOG.debug("Transaction chain {} successful.", chain);
140 public synchronized void bind(final KeyedInstanceIdentifier<Node, NodeKey> nodeId,
141 final PcepSessionState sessionState) {
142 this.statsMap.put(nodeId, sessionState);
146 public synchronized void unbind(final KeyedInstanceIdentifier<Node, NodeKey> nodeId) {
147 this.statsMap.remove(nodeId);
148 final WriteTransaction wTx = this.transactionChain.newWriteOnlyTransaction();
149 wTx.delete(LogicalDatastoreType.OPERATIONAL, nodeId);
152 } catch (final InterruptedException | ExecutionException e) {
153 LOG.warn("Failed to remove Pcep Node stats {}.", nodeId.getKey().getNodeId());