pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/BasePCEPSessionProposalFactory.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, 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 package org.opendaylight.protocol.pcep.impl;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.base.Preconditions;
  13 import java.net.InetSocketAddress;
  14 import java.util.List;
  15 import org.opendaylight.protocol.pcep.PCEPCapability;
  16 import org.opendaylight.protocol.pcep.PCEPPeerProposal;
  17 import org.opendaylight.protocol.pcep.PCEPSessionProposalFactory;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.Open;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.OpenBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.open.object.open.TlvsBuilder;
  21 import org.opendaylight.yangtools.yang.common.Uint8;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 public final class BasePCEPSessionProposalFactory implements PCEPSessionProposalFactory {
  26     private static final Logger LOG = LoggerFactory.getLogger(BasePCEPSessionProposalFactory.class);
  27     private static final int KA_TO_DEADTIMER_RATIO = 4;
  28
  29     private final int keepAlive;
  30     private final int deadTimer;
  31     private final List<PCEPCapability> capabilities;
  32
  33     public BasePCEPSessionProposalFactory(final int deadTimer, final int keepAlive,
  34             final List<PCEPCapability> capabilities) {
  35         if (keepAlive != 0) {
  36             Preconditions.checkArgument(keepAlive >= 1, "Minimum value for keep-alive-timer-value is 1");
  37             if (deadTimer != 0 && deadTimer / keepAlive != KA_TO_DEADTIMER_RATIO) {
  38                 LOG.warn("dead-timer-value should be {} times greater than keep-alive-timer-value",
  39                     KA_TO_DEADTIMER_RATIO);
  40             }
  41         }
  42
  43         this.deadTimer = deadTimer;
  44         this.keepAlive = keepAlive;
  45         this.capabilities = requireNonNull(capabilities);
  46     }
  47
  48     private void addTlvs(final InetSocketAddress address, final TlvsBuilder builder) {
  49         for (final PCEPCapability capability : this.capabilities) {
  50             capability.setCapabilityProposal(address, builder);
  51         }
  52     }
  53
  54     @Override
  55     public Open getSessionProposal(final InetSocketAddress address, final int sessionId,
  56             final PCEPPeerProposal peerProposal) {
  57         final OpenBuilder oBuilder = new OpenBuilder();
  58         oBuilder.setSessionId((short) sessionId);
  59         oBuilder.setKeepalive((short) BasePCEPSessionProposalFactory.this.keepAlive);
  60         if (BasePCEPSessionProposalFactory.this.keepAlive == 0) {
  61             oBuilder.setDeadTimer(Uint8.ZERO);
  62         } else {
  63             oBuilder.setDeadTimer((short) BasePCEPSessionProposalFactory.this.deadTimer);
  64         }
  65
  66         final TlvsBuilder builder = new TlvsBuilder();
  67         addTlvs(address, builder);
  68
  69         if (peerProposal != null) {
  70             peerProposal.setPeerSpecificProposal(address, builder);
  71         }
  72         return oBuilder.setTlvs(builder.build()).build();
  73     }
  74
  75     @Override
  76     public List<PCEPCapability> getCapabilities() {
  77         return this.capabilities;
  78     }
  79 }