org.opendaylight.ovsdb.openstack.netvirt.LBaaSPoolMemberHandler Maven / Gradle / Ivy
/*
* Copyright (c) 2014, 2015 SDN Hub, LLC. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.ovsdb.openstack.netvirt;
import java.net.HttpURLConnection;
import java.util.List;
import java.util.Map;
import org.opendaylight.ovsdb.openstack.netvirt.translator.NeutronLoadBalancer;
import org.opendaylight.ovsdb.openstack.netvirt.translator.NeutronLoadBalancerPool;
import org.opendaylight.ovsdb.openstack.netvirt.translator.NeutronLoadBalancerPoolMember;
import org.opendaylight.ovsdb.openstack.netvirt.translator.crud.INeutronLoadBalancerCRUD;
import org.opendaylight.ovsdb.openstack.netvirt.translator.crud.INeutronLoadBalancerPoolCRUD;
import org.opendaylight.ovsdb.openstack.netvirt.translator.crud.INeutronNetworkCRUD;
import org.opendaylight.ovsdb.openstack.netvirt.translator.crud.INeutronPortCRUD;
import org.opendaylight.ovsdb.openstack.netvirt.translator.crud.INeutronSubnetCRUD;
import org.opendaylight.ovsdb.openstack.netvirt.translator.iaware.INeutronLoadBalancerPoolMemberAware;
import org.opendaylight.ovsdb.openstack.netvirt.api.Action;
import org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher;
import org.opendaylight.ovsdb.openstack.netvirt.api.LoadBalancerConfiguration;
import org.opendaylight.ovsdb.openstack.netvirt.api.LoadBalancerProvider;
import org.opendaylight.ovsdb.openstack.netvirt.api.NodeCacheManager;
import org.opendaylight.ovsdb.utils.servicehelper.ServiceHelper;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
import org.osgi.framework.ServiceReference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Preconditions;
/**
* Handle requests for OpenStack Neutron v2.0 LBaaS API calls for
* /v2.0/pools/{pool_id}/members
*/
public class LBaaSPoolMemberHandler extends AbstractHandler
implements INeutronLoadBalancerPoolMemberAware, ConfigInterface {
private static final Logger LOG = LoggerFactory.getLogger(LBaaSPoolMemberHandler.class);
// The implementation for each of these services is resolved by the OSGi Service Manager
private volatile INeutronLoadBalancerPoolCRUD neutronLBPoolCache;
private volatile INeutronLoadBalancerCRUD neutronLBCache;
private volatile INeutronPortCRUD neutronPortCache;
private volatile INeutronNetworkCRUD neutronNetworkCache;
private volatile INeutronSubnetCRUD neutronSubnetCache;
private volatile LoadBalancerProvider loadBalancerProvider;
private volatile NodeCacheManager nodeCacheManager;
@Override
public int canCreateNeutronLoadBalancerPoolMember(NeutronLoadBalancerPoolMember neutronLBPoolMember) {
LoadBalancerConfiguration lbConfig = extractLBConfiguration(neutronLBPoolMember);
if (lbConfig == null) {
return HttpURLConnection.HTTP_BAD_REQUEST;
} else if (!lbConfig.isValid()) {
return HttpURLConnection.HTTP_NOT_ACCEPTABLE;
} else {
return HttpURLConnection.HTTP_OK;
}
}
@Override
public void neutronLoadBalancerPoolMemberCreated(NeutronLoadBalancerPoolMember neutronLBPoolMember) {
LOG.debug("Neutron LB Pool Member Creation : {}", neutronLBPoolMember.toString());
enqueueEvent(new NorthboundEvent(neutronLBPoolMember, Action.ADD));
}
/**
* Assuming that the pool information is fully populated before this call is made,
* we go with creating the LoadBalancerConfiguration object for this call with
* all information that is necessary to insert flow_mods
*/
private void doNeutronLoadBalancerPoolMemberCreate(NeutronLoadBalancerPoolMember neutronLBPoolMember) {
Preconditions.checkNotNull(loadBalancerProvider);
LoadBalancerConfiguration lbConfig = extractLBConfiguration(neutronLBPoolMember);
final List nodes =
nodeCacheManager.getBridgeNodes();
if (lbConfig == null) {
LOG.debug("Neutron LB configuration invalid for member {} ", neutronLBPoolMember.getPoolMemberAddress());
} else if (lbConfig.getVip() == null) {
LOG.debug("Neutron LB VIP not created yet for member {} ", neutronLBPoolMember.getID());
} else if (!lbConfig.isValid()) {
LOG.debug("Neutron LB pool configuration invalid for {} ", lbConfig.getName());
} else if (nodes.isEmpty()) {
LOG.debug("Noop with LB pool member {} creation because no nodes available.", neutronLBPoolMember.getID());
} else {
for (Node node : nodes) {
loadBalancerProvider.programLoadBalancerPoolMemberRules(node,
lbConfig,
lbConfig.getMembers().get(neutronLBPoolMember.getID()), Action.ADD);
}
}
}
@Override
public int canUpdateNeutronLoadBalancerPoolMember(NeutronLoadBalancerPoolMember delta, NeutronLoadBalancerPoolMember original) {
return HttpURLConnection.HTTP_NOT_IMPLEMENTED;
}
@Override
public void neutronLoadBalancerPoolMemberUpdated(NeutronLoadBalancerPoolMember neutronLBPoolMember) {
LOG.debug("Neutron LB Pool Member Update : {}", neutronLBPoolMember.toString());
enqueueEvent(new NorthboundEvent(neutronLBPoolMember, Action.UPDATE));
}
@Override
public int canDeleteNeutronLoadBalancerPoolMember(NeutronLoadBalancerPoolMember neutronLBPoolMember) {
LoadBalancerConfiguration lbConfig = extractLBConfiguration(neutronLBPoolMember);
if (lbConfig == null) {
return HttpURLConnection.HTTP_BAD_REQUEST;
} else if (!lbConfig.isValid()) {
return HttpURLConnection.HTTP_NOT_ACCEPTABLE;
} else {
return HttpURLConnection.HTTP_OK;
}
}
@Override
public void neutronLoadBalancerPoolMemberDeleted(NeutronLoadBalancerPoolMember neutronLBPoolMember) {
LOG.debug("Neutron LB Pool Member Deletion : {}", neutronLBPoolMember.toString());
enqueueEvent(new NorthboundEvent(neutronLBPoolMember, Action.DELETE));
}
private void doNeutronLoadBalancerPoolMemberDelete(NeutronLoadBalancerPoolMember neutronLBPoolMember) {
Preconditions.checkNotNull(loadBalancerProvider);
LoadBalancerConfiguration lbConfig = extractLBConfiguration(neutronLBPoolMember);
final List nodes = nodeCacheManager.getBridgeNodes();
if (lbConfig == null) {
LOG.debug("Neutron LB configuration invalid for member {} ", neutronLBPoolMember.getPoolMemberAddress());
} else if (lbConfig.getVip() == null) {
LOG.debug("Neutron LB VIP not created yet for member {} ", neutronLBPoolMember.getID());
} else if (!lbConfig.isValid()) {
LOG.debug("Neutron LB pool configuration invalid for {} ", lbConfig.getName());
} else if (nodes.isEmpty()) {
LOG.debug("Noop with LB pool member {} deletion because no nodes available.", neutronLBPoolMember.getID());
} else {
/* As of now, deleting a member involves recomputing member indices.
* This is best done through a complete update of the load balancer instance.
*/
LoadBalancerConfiguration newLBConfig = new LoadBalancerConfiguration(lbConfig);
newLBConfig.removeMember(neutronLBPoolMember.getID());
for (Node node : nodes) {
loadBalancerProvider.programLoadBalancerRules(node, lbConfig, Action.DELETE);
loadBalancerProvider.programLoadBalancerRules(node, newLBConfig, Action.ADD);
}
}
}
/**
* Process the event.
*
* @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
* @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
*/
@Override
public void processEvent(AbstractEvent abstractEvent) {
LOG.debug("Processing Loadbalancer member event {}", abstractEvent);
if (!(abstractEvent instanceof NorthboundEvent)) {
LOG.error("Unable to process abstract event {}", abstractEvent);
return;
}
NorthboundEvent ev = (NorthboundEvent) abstractEvent;
switch (ev.getAction()) {
case ADD:
doNeutronLoadBalancerPoolMemberCreate(ev.getLoadBalancerPoolMember());
break;
case DELETE:
doNeutronLoadBalancerPoolMemberDelete(ev.getLoadBalancerPoolMember());
break;
case UPDATE:
/**
* Typical upgrade involves changing weights. Since weights are not
* supported yet, updates are not supported either. TODO
*/
LOG.warn("Load balancer pool member update is not supported");
break;
default:
LOG.warn("Unable to process event action {}", ev.getAction());
break;
}
}
/**
* Useful utility for extracting the loadbalancer instance
* configuration from the neutron LB cache based on member info
* @param neutronLBPoolMember Neutron LB pool member object
* @return load balancer configuration of the pool member
*/
public LoadBalancerConfiguration extractLBConfiguration(NeutronLoadBalancerPoolMember neutronLBPoolMember) {
String memberID = neutronLBPoolMember.getID();
String memberIP = neutronLBPoolMember.getPoolMemberAddress();
String memberSubnetID = neutronLBPoolMember.getPoolMemberSubnetID();
Integer memberPort = neutronLBPoolMember.getPoolMemberProtoPort();
String memberPoolID = neutronLBPoolMember.getPoolID();
if (memberSubnetID == null || memberID == null || memberPoolID == null) {
LOG.debug("Neutron LB pool member details incomplete [id={}, pool_id={},subnet_id={}",
memberID, memberPoolID, memberSubnetID);
return null;
}
String memberMAC = NeutronCacheUtils.getMacAddress(neutronPortCache, memberSubnetID, memberIP);
if (memberMAC == null) {
LOG.debug("Neutron LB pool member {} MAC address unavailable", memberID);
return null;
}
NeutronLoadBalancerPool neutronLBPool = neutronLBPoolCache.getNeutronLoadBalancerPool(memberPoolID);
if (neutronLBPool == null) {
LOG.debug("Neutron LB pool {} unavailable", memberPoolID);
return null;
}
String memberProtocol = neutronLBPool.getLoadBalancerPoolProtocol();
if (!(memberProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_TCP) ||
memberProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTP) ||
memberProtocol.equalsIgnoreCase(LoadBalancerConfiguration.PROTOCOL_HTTPS))) {
return null;
}
String loadBalancerSubnetID=null, loadBalancerVip=null, loadBalancerName=null;
for (NeutronLoadBalancer neutronLB: neutronLBCache.getAllNeutronLoadBalancers()) {
loadBalancerSubnetID = neutronLB.getLoadBalancerVipSubnetID();
if (memberSubnetID.equals(loadBalancerSubnetID)) {
loadBalancerName = neutronLB.getLoadBalancerName();
loadBalancerVip = neutronLB.getLoadBalancerVipAddress();
break;
}
}
/**
* It is possible that the VIP has not been created yet.
* In that case, we create dummy configuration that will not program rules.
*/
LoadBalancerConfiguration lbConfig = new LoadBalancerConfiguration(loadBalancerName, loadBalancerVip);
Map.Entry providerInfo = NeutronCacheUtils.getProviderInformation(neutronNetworkCache, neutronSubnetCache, memberSubnetID);
if (providerInfo != null) {
lbConfig.setProviderNetworkType(providerInfo.getKey());
lbConfig.setProviderSegmentationId(providerInfo.getValue());
}
lbConfig.setVmac(NeutronCacheUtils.getMacAddress(neutronPortCache, loadBalancerSubnetID, loadBalancerVip));
/* Extract all other active members and include in LB config
*/
String otherMemberID, otherMemberSubnetID, otherMemberIP, otherMemberMAC, otherMemberProtocol;
Boolean otherMemberAdminStateIsUp;
Integer otherMemberPort;
for (NeutronLoadBalancerPoolMember otherMember: neutronLBPool.getLoadBalancerPoolMembers()) {
otherMemberID = otherMember.getID();
if (otherMemberID.equals(memberID)) {
continue; //skip
}
otherMemberIP = otherMember.getPoolMemberAddress();
otherMemberAdminStateIsUp = otherMember.getPoolMemberAdminStateIsUp();
otherMemberSubnetID = otherMember.getPoolMemberSubnetID();
otherMemberPort = otherMember.getPoolMemberProtoPort();
otherMemberProtocol = memberProtocol;
if (otherMemberIP != null && otherMemberSubnetID != null && otherMemberAdminStateIsUp != null &&
otherMemberAdminStateIsUp) {
otherMemberMAC = NeutronCacheUtils.getMacAddress(neutronPortCache, otherMemberSubnetID, otherMemberIP);
if (otherMemberMAC == null) {
continue;
}
lbConfig.addMember(otherMemberID, otherMemberIP, otherMemberMAC, otherMemberProtocol, otherMemberPort);
}
}
lbConfig.addMember(memberID, memberIP, memberMAC, memberProtocol, memberPort);
return lbConfig;
}
@Override
public void setDependencies(ServiceReference serviceReference) {
loadBalancerProvider =
(LoadBalancerProvider) ServiceHelper.getGlobalInstance(LoadBalancerProvider.class, this);
nodeCacheManager =
(NodeCacheManager) ServiceHelper.getGlobalInstance(NodeCacheManager.class, this);
eventDispatcher =
(EventDispatcher) ServiceHelper.getGlobalInstance(EventDispatcher.class, this);
eventDispatcher.eventHandlerAdded(serviceReference, this);
}
@Override
public void setDependencies(Object impl) {
if (impl instanceof INeutronNetworkCRUD) {
neutronNetworkCache = (INeutronNetworkCRUD)impl;
} else if (impl instanceof INeutronPortCRUD) {
neutronPortCache = (INeutronPortCRUD)impl;
} else if (impl instanceof INeutronSubnetCRUD) {
neutronSubnetCache = (INeutronSubnetCRUD)impl;
} else if (impl instanceof INeutronLoadBalancerCRUD) {
neutronLBCache = (INeutronLoadBalancerCRUD)impl;
} else if (impl instanceof INeutronLoadBalancerPoolCRUD) {
neutronLBPoolCache = (INeutronLoadBalancerPoolCRUD)impl;
} else if (impl instanceof LoadBalancerProvider) {
loadBalancerProvider = (LoadBalancerProvider)impl;
}
}
}
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