openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/LBaaSHandler.java

   1 /*
   2  * Copyright (C) 2014 SDN Hub, LLC.
   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  * Authors : Srini Seetharaman
   9  */
  10
  11 package org.opendaylight.ovsdb.openstack.netvirt;
  12
  13 import org.opendaylight.controller.networkconfig.neutron.INeutronLoadBalancerAware;
  14 import org.opendaylight.controller.networkconfig.neutron.INeutronLoadBalancerPoolCRUD;
  15 import org.opendaylight.controller.networkconfig.neutron.INeutronLoadBalancerPoolMemberCRUD;
  16 import org.opendaylight.controller.networkconfig.neutron.INeutronPortCRUD;
  17 import org.opendaylight.controller.networkconfig.neutron.NeutronLoadBalancer;
  18 import org.opendaylight.controller.networkconfig.neutron.NeutronLoadBalancerPool;
  19 import org.opendaylight.controller.networkconfig.neutron.NeutronLoadBalancerPoolMember;
  20 import org.opendaylight.controller.networkconfig.neutron.NeutronPort;
  21 import org.opendaylight.controller.networkconfig.neutron.Neutron_IPs;
  22 import org.opendaylight.ovsdb.openstack.netvirt.api.Action;
  23 import org.opendaylight.ovsdb.openstack.netvirt.api.LoadBalancerConfiguration;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 import com.google.common.collect.Maps;
  28
  29 import java.net.HttpURLConnection;
  30 import java.util.Iterator;
  31 import java.util.List;
  32 import java.util.Map;
  33
  34 /**
  35  * Handle requests for OpenStack Neutron v2.0 LBaaS API calls for /v2.0/loadbalancers.
  36  */
  37
  38 //TODO: Implement INeutronLoadBalancerHealthMonitorAware, INeutronLoadBalancerListenerAware, INeutronLoadBalancerPoolMemberAware,
  39
  40 public class LBaaSHandler extends AbstractHandler
  41         implements INeutronLoadBalancerAware {
  42
  43     private static final Logger logger = LoggerFactory.getLogger(LBaaSHandler.class);
  44
  45     // The implementation for each of these services is resolved by the OSGi Service Manager
  46     private volatile INeutronLoadBalancerPoolCRUD neutronLBPoolCache;
  47     private volatile INeutronLoadBalancerPoolMemberCRUD neutronLBPoolMemberCache;
  48     private volatile INeutronPortCRUD neutronPortsCache;
  49     private Map<String, LoadBalancerConfiguration> loadbalancersCache = Maps.newHashMap();
  50
  51     @Override
  52     public int canCreateNeutronLoadBalancer(NeutronLoadBalancer neutronLoadBalancer) {
  53         if (loadbalancersCache.containsKey(neutronLoadBalancer.getLoadBalancerID()))
  54             return HttpURLConnection.HTTP_CONFLICT;
  55         return HttpURLConnection.HTTP_OK;
  56     }
  57
  58     /**
  59      * Assuming that the pool information is fully populated before this call is made,
  60      * we go with creating the LoadBalancerConfiguration object for this call with
  61      * all information that is necessary to insert flow_mods
  62      */
  63     @Override
  64     public void neutronLoadBalancerCreated(NeutronLoadBalancer neutronLoadBalancer) {
  65         logger.debug("Neutron LB Creation : {}", neutronLoadBalancer.toString());
  66         enqueueEvent(new NorthboundEvent(neutronLoadBalancer, Action.ADD));
  67     }
  68
  69     private void doNeutronLoadBalancerCreate(NeutronLoadBalancer neutronLoadBalancer) {
  70         int result = canCreateNeutronLoadBalancer(neutronLoadBalancer);
  71         if (result != HttpURLConnection.HTTP_OK) {
  72             logger.debug("Neutron Load Balancer creation failed {} ", result);
  73             return;
  74         }
  75
  76         String loadBalancerID = neutronLoadBalancer.getLoadBalancerID();
  77         String loadBalancerName = neutronLoadBalancer.getLoadBalancerName();
  78         String loadBalancerVip = neutronLoadBalancer.getLoadBalancerVipAddress();
  79         String loadBalancerSubnetID = neutronLoadBalancer.getLoadBalancerVipSubnetID();
  80         LoadBalancerConfiguration newLB = new LoadBalancerConfiguration(loadBalancerName, loadBalancerVip);
  81
  82         String memberID, memberIP, memberMAC, memberProtocol;
  83         Integer memberPort;
  84
  85         for (NeutronLoadBalancerPool neutronLBPool: neutronLBPoolCache.getAllNeutronLoadBalancerPools()) {
  86             List<? extends NeutronLoadBalancerPoolMember> members =
  87                 (List<? extends NeutronLoadBalancerPoolMember>)neutronLBPool.getLoadBalancerPoolMembers();
  88             memberProtocol = neutronLBPool.getLoadBalancerPoolProtocol();
  89             /*
  90              * Only HTTP and HTTPS are supported as of this version
  91              * TODO: Support all TCP load-balancers
  92              */
  93             if (!(memberProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTP) ||
  94                   memberProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTPS)))
  95                 continue;
  96             for (NeutronLoadBalancerPoolMember neutronLBPoolMember: members) {
  97                 if (neutronLBPoolMember.getPoolMemberSubnetID().equals(loadBalancerSubnetID)) {
  98                     memberID = neutronLBPoolMember.getPoolMemberID();
  99                     memberIP = neutronLBPoolMember.getPoolMemberAddress();
 100                     memberPort = neutronLBPoolMember.getPoolMemberProtoPort();
 101                     memberMAC = this.getMacAddress(memberIP);
 102                     if (memberMAC == null)
 103                         continue;
 104                     newLB.addMember(memberID, memberIP, memberMAC, memberProtocol, memberPort);
 105                 }
 106             }
 107         }
 108         if (newLB.isValid()) {
 109             logger.trace("Neutron LB pool configuration invalid for {} ", loadBalancerName);
 110             return;
 111         } else {
 112             loadbalancersCache.put(loadBalancerID, newLB);
 113             //TODO: Trigger flowmod addition
 114         }
 115     }
 116
 117     @Override
 118     public int canUpdateNeutronLoadBalancer(NeutronLoadBalancer delta, NeutronLoadBalancer original) {
 119         return HttpURLConnection.HTTP_OK;
 120     }
 121
 122     @Override
 123     public void neutronLoadBalancerUpdated(NeutronLoadBalancer neutronLoadBalancer) {
 124         enqueueEvent(new NorthboundEvent(neutronLoadBalancer, Action.UPDATE));
 125         return;
 126     }
 127
 128     @Override
 129     public int canDeleteNeutronLoadBalancer(NeutronLoadBalancer neutronLoadBalancer) {
 130         if (!loadbalancersCache.containsKey(neutronLoadBalancer.getLoadBalancerID()))
 131             return HttpURLConnection.HTTP_NOT_ACCEPTABLE;
 132         return HttpURLConnection.HTTP_OK;
 133     }
 134
 135     @Override
 136     public void neutronLoadBalancerDeleted(NeutronLoadBalancer neutronLoadBalancer) {
 137         logger.debug("Neutron LB Deletion : {}", neutronLoadBalancer.toString());
 138         enqueueEvent(new NorthboundEvent(neutronLoadBalancer, Action.DELETE));
 139     }
 140
 141     private void doNeutronLoadBalancerDelete(NeutronLoadBalancer neutronLoadBalancer) {
 142         int result = canDeleteNeutronLoadBalancer(neutronLoadBalancer);
 143         if  (result != HttpURLConnection.HTTP_OK) {
 144             logger.error(" delete Neutron NeutronLoadBalancer Pool validation failed for result - {} ", result);
 145             return;
 146         }
 147         loadbalancersCache.remove(neutronLoadBalancer.getLoadBalancerID());
 148         //TODO: Trigger flowmod removals
 149     }
 150
 151     /**
 152      * Process the event.
 153      *
 154      * @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
 155      * @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
 156      */
 157     @Override
 158     public void processEvent(AbstractEvent abstractEvent) {
 159         if (!(abstractEvent instanceof NorthboundEvent)) {
 160             logger.error("Unable to process abstract event " + abstractEvent);
 161             return;
 162         }
 163         NorthboundEvent ev = (NorthboundEvent) abstractEvent;
 164         switch (ev.getAction()) {
 165             case ADD:
 166                 doNeutronLoadBalancerCreate(ev.getLoadBalancer());
 167             case DELETE:
 168                 doNeutronLoadBalancerDelete(ev.getLoadBalancer());
 169                 // fall through
 170             case UPDATE:
 171                 doNeutronLoadBalancerDelete(ev.getLoadBalancer());
 172                 doNeutronLoadBalancerCreate(ev.getLoadBalancer());
 173                 break;
 174             default:
 175                 logger.warn("Unable to process event action " + ev.getAction());
 176                 break;
 177         }
 178     }
 179
 180     /**
 181      * Look up in the NeutronPortsCRUD cache and return the MAC address for a corresponding IP address
 182      * @param ipAddr IP address of a member or VM
 183      * @return MAC address registered with that IP address
 184      */
 185     private String getMacAddress(String ipAddr) {
 186             List<Neutron_IPs> fixedIPs;
 187             Iterator<Neutron_IPs> fixedIPIterator;
 188             Neutron_IPs ip;
 189
 190             List<NeutronPort> allPorts = neutronPortsCache.getAllPorts();
 191          Iterator<NeutronPort> i = allPorts.iterator();
 192          while (i.hasNext()) {
 193              NeutronPort port = i.next();
 194              fixedIPs = port.getFixedIPs();
 195              if (fixedIPs != null && fixedIPs.size() > 0) {
 196                  fixedIPIterator = fixedIPs.iterator();
 197                  while (fixedIPIterator.hasNext()) {
 198                      ip = fixedIPIterator.next();
 199                      if (ip.getIpAddress().equals(ipAddr))
 200                          return port.getMacAddress();
 201                  }
 202              }
 203          }
 204         return null;
 205     }
 206 }