2 * Copyright (C) 2014 SDN Hub, LLC.
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
8 * Authors : Srini Seetharaman
11 package org.opendaylight.ovsdb.openstack.netvirt;
13 import org.opendaylight.neutron.spi.INeutronLoadBalancerCRUD;
14 import org.opendaylight.neutron.spi.INeutronLoadBalancerPoolAware;
15 import org.opendaylight.neutron.spi.INeutronNetworkCRUD;
16 import org.opendaylight.neutron.spi.INeutronPortCRUD;
17 import org.opendaylight.neutron.spi.INeutronSubnetCRUD;
18 import org.opendaylight.neutron.spi.NeutronLoadBalancer;
19 import org.opendaylight.neutron.spi.NeutronLoadBalancerPool;
20 import org.opendaylight.neutron.spi.NeutronLoadBalancerPoolMember;
21 import org.opendaylight.controller.sal.core.Node;
22 import org.opendaylight.controller.switchmanager.ISwitchManager;
23 import org.opendaylight.ovsdb.openstack.netvirt.api.Action;
24 import org.opendaylight.ovsdb.openstack.netvirt.api.LoadBalancerConfiguration;
25 import org.opendaylight.ovsdb.openstack.netvirt.api.LoadBalancerProvider;
26 import org.slf4j.Logger;
27 import org.slf4j.LoggerFactory;
29 import com.google.common.base.Preconditions;
30 import com.google.common.collect.Lists;
32 import java.net.HttpURLConnection;
33 import java.util.List;
37 * Handle requests for OpenStack Neutron v2.0 LBaaS API calls for
38 * /v2.0/pools . It is possible that each pool spans multiple subnets.
39 * In that case, the user should be creating a separate VIP for each subnet.
42 public class LBaaSPoolHandler extends AbstractHandler
43 implements INeutronLoadBalancerPoolAware {
45 private static final Logger logger = LoggerFactory.getLogger(LBaaSPoolHandler.class);
47 // The implementation for each of these services is resolved by the OSGi Service Manager
48 private volatile INeutronLoadBalancerCRUD neutronLBCache;
49 private volatile INeutronPortCRUD neutronPortsCache;
50 private volatile INeutronNetworkCRUD neutronNetworkCache;
51 private volatile INeutronSubnetCRUD neutronSubnetCache;
52 private volatile LoadBalancerProvider loadBalancerProvider;
53 private volatile ISwitchManager switchManager;
56 public int canCreateNeutronLoadBalancerPool(NeutronLoadBalancerPool neutronLBPool) {
57 String poolProtocol = neutronLBPool.getLoadBalancerPoolProtocol();
58 if (poolProtocol == null) {
59 return HttpURLConnection.HTTP_BAD_REQUEST;
60 } else if (!(poolProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_TCP) ||
61 poolProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTP) ||
62 poolProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTPS))) {
63 return HttpURLConnection.HTTP_NOT_ACCEPTABLE;
65 return HttpURLConnection.HTTP_OK;
70 public void neutronLoadBalancerPoolCreated(NeutronLoadBalancerPool neutronLBPool) {
71 logger.debug("Neutron LB Pool Creation : {}", neutronLBPool.toString());
72 enqueueEvent(new NorthboundEvent(neutronLBPool, Action.ADD));
76 * Assuming that the pool information is fully populated before this call is made,
77 * we go with creating the LoadBalancerConfiguration object for this call with
78 * all information that is necessary to insert flow_mods
80 private void doNeutronLoadBalancerPoolCreate(NeutronLoadBalancerPool neutronLBPool) {
81 Preconditions.checkNotNull(loadBalancerProvider);
82 List<LoadBalancerConfiguration> lbConfigList = extractLBConfiguration(neutronLBPool);
83 if (lbConfigList == null) {
84 logger.debug("Neutron LB configuration invalid for pool {} ", neutronLBPool.getLoadBalancerPoolID());
85 } else if (lbConfigList.size() == 0) {
86 logger.debug("No Neutron LB VIP not created yet for pool {} ", neutronLBPool.getLoadBalancerPoolID());
87 } else if (this.switchManager.getNodes().size() == 0) {
88 logger.debug("Noop with LB pool {} creation because no nodes available.", neutronLBPool.getLoadBalancerPoolID());
90 for (LoadBalancerConfiguration lbConfig: lbConfigList) {
91 if (!lbConfig.isValid()) {
92 logger.debug("Neutron LB pool configuration invalid for {} ", lbConfig.getName());
95 for (Node node: this.switchManager.getNodes()) {
96 loadBalancerProvider.programLoadBalancerRules(node, lbConfig, Action.ADD);
104 public int canUpdateNeutronLoadBalancerPool(NeutronLoadBalancerPool delta, NeutronLoadBalancerPool original) {
105 return HttpURLConnection.HTTP_NOT_IMPLEMENTED;
109 public void neutronLoadBalancerPoolUpdated(NeutronLoadBalancerPool neutronLBPool) {
110 logger.debug("Neutron LB Pool Update : {}", neutronLBPool.toString());
111 enqueueEvent(new NorthboundEvent(neutronLBPool, Action.UPDATE));
115 public int canDeleteNeutronLoadBalancerPool(NeutronLoadBalancerPool neutronLBPool) {
116 String poolProtocol = neutronLBPool.getLoadBalancerPoolProtocol();
117 if (poolProtocol == null) {
118 return HttpURLConnection.HTTP_BAD_REQUEST;
119 } else if (!(poolProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_TCP) ||
120 poolProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTP) ||
121 poolProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTPS))) {
122 return HttpURLConnection.HTTP_NOT_ACCEPTABLE;
124 return HttpURLConnection.HTTP_OK;
129 public void neutronLoadBalancerPoolDeleted(NeutronLoadBalancerPool neutronLBPool) {
130 logger.debug("Neutron LB Pool Deletion : {}", neutronLBPool.toString());
131 enqueueEvent(new NorthboundEvent(neutronLBPool, Action.DELETE));
134 private void doNeutronLoadBalancerPoolDelete(NeutronLoadBalancerPool neutronLBPool) {
135 Preconditions.checkNotNull(loadBalancerProvider);
137 List<LoadBalancerConfiguration> lbConfigList = extractLBConfiguration(neutronLBPool);
138 if (lbConfigList == null) {
139 logger.debug("Neutron LB configuration invalid for pool {} ", neutronLBPool.getLoadBalancerPoolID());
140 } else if (lbConfigList.size() == 0) {
141 logger.debug("No Neutron LB VIP not created yet for pool {} ", neutronLBPool.getLoadBalancerPoolID());
142 } else if (this.switchManager.getNodes().size() == 0) {
143 logger.debug("Noop with LB pool {} deletion because no nodes available.", neutronLBPool.getLoadBalancerPoolID());
145 for (LoadBalancerConfiguration lbConfig: lbConfigList) {
146 if (!lbConfig.isValid()) {
147 logger.debug("Neutron LB pool configuration invalid for {} ", lbConfig.getName());
150 for (Node node: this.switchManager.getNodes()) {
151 loadBalancerProvider.programLoadBalancerRules(node, lbConfig, Action.DELETE);
161 * @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
162 * @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
165 public void processEvent(AbstractEvent abstractEvent) {
166 logger.debug("Processing Loadbalancer Pool event " + abstractEvent);
167 if (!(abstractEvent instanceof NorthboundEvent)) {
168 logger.error("Unable to process abstract event " + abstractEvent);
171 NorthboundEvent ev = (NorthboundEvent) abstractEvent;
172 switch (ev.getAction()) {
174 doNeutronLoadBalancerPoolCreate(ev.getLoadBalancerPool());
177 doNeutronLoadBalancerPoolDelete(ev.getLoadBalancerPool());
181 * Typical upgrade involves changing algorithm. Right now
182 * we do not support this flexibility. TODO
184 logger.warn("Load balancer pool update is not supported");
187 logger.warn("Unable to process event action " + ev.getAction());
193 * Useful utility for extracting the loadbalancer instance. With
194 * each LB pool, we allow multiple VIP and LB to be instantiated.
196 public List<LoadBalancerConfiguration> extractLBConfiguration(NeutronLoadBalancerPool neutronLBPool) {
197 String poolProtocol = neutronLBPool.getLoadBalancerPoolProtocol();
198 if (poolProtocol == null) {
201 if (!(poolProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTP) ||
202 poolProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTPS))) {
206 List<NeutronLoadBalancerPoolMember> poolMembers = neutronLBPool.getLoadBalancerPoolMembers();
207 if (poolMembers.size() == 0) {
208 logger.debug("Neutron LB pool is empty: {}", neutronLBPool);
212 List<LoadBalancerConfiguration> lbConfigList = Lists.newLinkedList();
214 /* Iterate over all the Loadbalancers created so far and identify VIP
216 String loadBalancerSubnetID, loadBalancerVip=null, loadBalancerName=null;
217 for (NeutronLoadBalancer neutronLB: neutronLBCache.getAllNeutronLoadBalancers()) {
218 loadBalancerSubnetID = neutronLB.getLoadBalancerVipSubnetID();
219 loadBalancerName = neutronLB.getLoadBalancerName();
220 loadBalancerVip = neutronLB.getLoadBalancerVipAddress();
222 LoadBalancerConfiguration lbConfig = new LoadBalancerConfiguration(loadBalancerName, loadBalancerVip);
223 Map.Entry<String,String> providerInfo = NeutronCacheUtils.getProviderInformation(neutronNetworkCache, neutronSubnetCache, loadBalancerSubnetID);
224 if (providerInfo != null) {
225 lbConfig.setProviderNetworkType(providerInfo.getKey());
226 lbConfig.setProviderSegmentationId(providerInfo.getValue());
228 lbConfig.setVmac(NeutronCacheUtils.getMacAddress(neutronPortsCache, loadBalancerSubnetID, loadBalancerVip));
230 /* Iterate over all the members in this pool and find those in same
231 * subnet as the VIP. Those will be included in the lbConfigList
233 String memberSubnetID, memberIP, memberID, memberMAC;
235 Boolean memberAdminStateIsUp;
236 for (NeutronLoadBalancerPoolMember neutronLBPoolMember: neutronLBPool.getLoadBalancerPoolMembers()) {
237 memberAdminStateIsUp = neutronLBPoolMember.getPoolMemberAdminStateIsUp();
238 memberSubnetID = neutronLBPoolMember.getPoolMemberSubnetID();
239 if (memberSubnetID == null || memberAdminStateIsUp == null) {
241 } else if (memberSubnetID.equals(loadBalancerSubnetID) && memberAdminStateIsUp.booleanValue()) {
242 memberID = neutronLBPoolMember.getPoolMemberID();
243 memberIP = neutronLBPoolMember.getPoolMemberAddress();
244 memberPort = neutronLBPoolMember.getPoolMemberProtoPort();
245 if (memberSubnetID == null || memberID == null || memberIP == null || memberPort == null) {
246 logger.debug("Neutron LB pool member details incomplete: {}", neutronLBPoolMember);
249 memberMAC = NeutronCacheUtils.getMacAddress(neutronPortsCache, memberSubnetID, memberIP);
250 if (memberMAC == null) {
253 lbConfig.addMember(memberID, memberIP, memberMAC, poolProtocol, memberPort);
257 if (lbConfig.getMembers().size() > 0)
258 lbConfigList.add(lbConfig);