2 * Copyright (c) 2016 Cisco Systems, Inc. and others. 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.groupbasedpolicy.renderer.vpp.util;
11 import java.util.AbstractMap;
12 import java.util.concurrent.Callable;
13 import java.util.concurrent.ExecutionException;
14 import java.util.concurrent.ExecutorService;
15 import java.util.concurrent.Executors;
16 import java.util.concurrent.Future;
17 import java.util.concurrent.TimeUnit;
18 import java.util.concurrent.TimeoutException;
19 import java.util.concurrent.locks.ReentrantLock;
21 import javax.annotation.Nonnull;
23 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
24 import org.opendaylight.controller.md.sal.binding.api.MountPoint;
25 import org.opendaylight.controller.md.sal.binding.api.MountPointService;
26 import org.opendaylight.vbd.impl.transaction.VbdNetconfTransaction;
27 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
28 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
30 import org.slf4j.Logger;
31 import org.slf4j.LoggerFactory;
33 import com.google.common.base.Optional;
34 import com.google.common.base.Preconditions;
35 import com.google.common.util.concurrent.SettableFuture;
37 public class MountedDataBrokerProvider {
39 private static final Logger LOG = LoggerFactory.getLogger(MountedDataBrokerProvider.class);
40 private static final short DURATION = 3000;
41 private final MountPointService mountService;
42 private final DataBroker dataBroker;
43 @SuppressWarnings("FieldCanBeLocal")
44 private final byte NODE_CONNECTION_TIMER = 60; // seconds
46 public MountedDataBrokerProvider(@Nonnull MountPointService mountService, @Nonnull DataBroker dataBroker) {
47 this.mountService = Preconditions.checkNotNull(mountService);
48 this.dataBroker = Preconditions.checkNotNull(dataBroker);
51 public Optional<DataBroker> resolveDataBrokerForMountPoint(@Nonnull InstanceIdentifier<Node> iidToMountPoint) {
53 if (VbdNetconfTransaction.NODE_DATA_BROKER_MAP.get(iidToMountPoint) != null) {
54 return Optional.of(VbdNetconfTransaction.NODE_DATA_BROKER_MAP.get(iidToMountPoint).getKey());
56 final SettableFuture<Boolean> futureNodeStatus = SettableFuture.create();
57 final NodeKey nodeKey = iidToMountPoint.firstKeyOf(Node.class);
58 new GbpVppNetconfConnectionProbe(nodeKey, futureNodeStatus, dataBroker);
59 if (futureNodeStatus.get(NODE_CONNECTION_TIMER, TimeUnit.SECONDS)) {
60 LOG.debug("Node connected, mountpoint with iid {} available", iidToMountPoint);
61 Future<Optional<MountPoint>> mountPointfuture = getMountpointFromSal(iidToMountPoint);
62 Optional<MountPoint> potentialMountPoint = mountPointfuture.get();
63 if (potentialMountPoint.isPresent()) {
64 final Optional<DataBroker> dataBrokerOpt = potentialMountPoint.get().getService(DataBroker.class);
65 VbdNetconfTransaction.NODE_DATA_BROKER_MAP.put(iidToMountPoint,
66 new AbstractMap.SimpleEntry(dataBrokerOpt.get(), new ReentrantLock()));
67 LOG.info("Lock created for {}", iidToMountPoint);
70 LOG.warn("Mount point does not exist for {}", iidToMountPoint);
71 return Optional.absent();
74 LOG.warn("Failed while connecting to node, Iid: {}", iidToMountPoint);
75 return Optional.absent();
77 } catch (TimeoutException e) {
78 LOG.warn("Mountpoint not obtained within {} seconds. Iid: {}", NODE_CONNECTION_TIMER, iidToMountPoint, e);
79 return Optional.absent();
80 } catch (ExecutionException | InterruptedException e) {
81 LOG.warn("Error while getting mountpoint. Iid: {}", iidToMountPoint, e);
82 return Optional.absent();
87 // This works as a workaround for mountpoint registration in cluster. If application is registered on different
88 // node as netconf service, it obtains mountpoint registered by SlaveSalFacade (instead of MasterSalFacade). However
89 // this service registers mountpoint a moment later then connectionStatus is set to "Connected". If NodeManager hits
90 // state where device is connected but mountpoint is not yet available, try to get it again in a while
91 private Future<Optional<MountPoint>> getMountpointFromSal(final InstanceIdentifier<Node> iid) {
92 final ExecutorService executorService = Executors.newSingleThreadExecutor();
93 final Callable<Optional<MountPoint>> task = () -> {
97 final Optional<MountPoint> optionalMountpoint = mountService.getMountPoint(iid);
98 if (optionalMountpoint.isPresent()) {
99 return optionalMountpoint;
101 LOG.warn("Mountpoint {} is not registered yet", iid);
102 Thread.sleep(DURATION);
103 } catch (InterruptedException e) {
104 LOG.warn("Thread interrupted to ", e);
107 } while (attempt <= 3);
108 return Optional.absent();
110 return executorService.submit(task);