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// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package com.cloud.network.element;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.inject.Inject;
import javax.naming.ConfigurationException;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Component;
import org.apache.cloudstack.framework.config.dao.ConfigurationDao;
import com.cloud.agent.api.to.LoadBalancerTO;
import com.cloud.configuration.Config;
import com.cloud.deploy.DeployDestination;
import com.cloud.exception.ConcurrentOperationException;
import com.cloud.exception.InsufficientCapacityException;
import com.cloud.exception.ResourceUnavailableException;
import com.cloud.network.Network;
import com.cloud.network.Network.Capability;
import com.cloud.network.Network.Provider;
import com.cloud.network.Network.Service;
import com.cloud.network.NetworkModel;
import com.cloud.network.Networks.TrafficType;
import com.cloud.network.PhysicalNetworkServiceProvider;
import com.cloud.network.PublicIpAddress;
import com.cloud.network.dao.NetworkDao;
import com.cloud.network.lb.ElasticLoadBalancerManager;
import com.cloud.network.lb.LoadBalancingRule;
import com.cloud.network.rules.LoadBalancerContainer;
import com.cloud.offering.NetworkOffering;
import com.cloud.offerings.dao.NetworkOfferingDao;
import com.cloud.utils.component.AdapterBase;
import com.cloud.vm.NicProfile;
import com.cloud.vm.ReservationContext;
import com.cloud.vm.VirtualMachineProfile;
@Component
public class ElasticLoadBalancerElement extends AdapterBase implements LoadBalancingServiceProvider, IpDeployer {
private static final Logger s_logger = Logger.getLogger(ElasticLoadBalancerElement.class);
private static final Map<Service, Map<Capability, String>> capabilities = setCapabilities();
@Inject
NetworkModel _networkManager;
@Inject
ElasticLoadBalancerManager _lbMgr;
@Inject
ConfigurationDao _configDao;
@Inject
NetworkOfferingDao _networkOfferingDao;
@Inject
NetworkDao _networksDao;
boolean _enabled;
TrafficType _frontEndTrafficType = TrafficType.Guest;
private boolean canHandle(Network network, List<LoadBalancingRule> rules) {
if (network.getGuestType() != Network.GuestType.Shared || network.getTrafficType() != TrafficType.Guest) {
s_logger.debug("Not handling network with type " + network.getGuestType() + " and traffic type " + network.getTrafficType());
return false;
}
Map<Capability, String> lbCaps = this.getCapabilities().get(Service.Lb);
if (!lbCaps.isEmpty()) {
String schemeCaps = lbCaps.get(Capability.LbSchemes);
if (schemeCaps != null) {
for (LoadBalancingRule rule : rules) {
if (!schemeCaps.contains(rule.getScheme().toString())) {
s_logger.debug("Scheme " + rules.get(0).getScheme() + " is not supported by the provider " + this.getName());
return false;
}
}
}
}
return true;
}
@Override
public Provider getProvider() {
return Provider.ElasticLoadBalancerVm;
}
@Override
public Map<Service, Map<Capability, String>> getCapabilities() {
return capabilities;
}
private static Map<Service, Map<Capability, String>> setCapabilities() {
Map<Service, Map<Capability, String>> capabilities = new HashMap<Service, Map<Capability, String>>();
Map<Capability, String> lbCapabilities = new HashMap<Capability, String>();
lbCapabilities.put(Capability.SupportedLBAlgorithms, "roundrobin,leastconn,source");
lbCapabilities.put(Capability.SupportedLBIsolation, "shared");
lbCapabilities.put(Capability.SupportedProtocols, "tcp, udp");
lbCapabilities.put(Capability.LbSchemes, LoadBalancerContainer.Scheme.Public.toString());
capabilities.put(Service.Lb, lbCapabilities);
return capabilities;
}
@Override
public boolean implement(Network network, NetworkOffering offering, DeployDestination dest, ReservationContext context) throws ConcurrentOperationException,
ResourceUnavailableException, InsufficientCapacityException {
return true;
}
@Override
public boolean prepare(Network network, NicProfile nic, VirtualMachineProfile vm, DeployDestination dest, ReservationContext context)
throws ConcurrentOperationException, ResourceUnavailableException, InsufficientCapacityException {
return true;
}
@Override
public boolean release(Network network, NicProfile nic, VirtualMachineProfile vm, ReservationContext context) throws ConcurrentOperationException,
ResourceUnavailableException {
return true;
}
@Override
public boolean shutdown(Network network, ReservationContext context, boolean cleanup) throws ConcurrentOperationException, ResourceUnavailableException {
// TODO kill all loadbalancer vms by calling the ElasticLoadBalancerManager
return false;
}
@Override
public boolean destroy(Network network, ReservationContext context) throws ConcurrentOperationException, ResourceUnavailableException {
// TODO kill all loadbalancer vms by calling the ElasticLoadBalancerManager
return false;
}
@Override
public boolean validateLBRule(Network network, LoadBalancingRule rule) {
return true;
}
@Override
public boolean applyLBRules(Network network, List<LoadBalancingRule> rules) throws ResourceUnavailableException {
if (!canHandle(network, rules)) {
return false;
}
return _lbMgr.applyLoadBalancerRules(network, rules);
}
@Override
public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
super.configure(name, params);
String enabled = _configDao.getValue(Config.ElasticLoadBalancerEnabled.key());
_enabled = (enabled == null) ? false : Boolean.parseBoolean(enabled);
if (_enabled) {
String traffType = _configDao.getValue(Config.ElasticLoadBalancerNetwork.key());
if ("guest".equalsIgnoreCase(traffType)) {
_frontEndTrafficType = TrafficType.Guest;
} else if ("public".equalsIgnoreCase(traffType)) {
_frontEndTrafficType = TrafficType.Public;
} else
throw new ConfigurationException("Traffic type for front end of load balancer has to be guest or public; found : " + traffType);
}
return true;
}
@Override
public boolean isReady(PhysicalNetworkServiceProvider provider) {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean shutdownProviderInstances(PhysicalNetworkServiceProvider provider, ReservationContext context) throws ConcurrentOperationException,
ResourceUnavailableException {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean canEnableIndividualServices() {
return false;
}
@Override
public boolean verifyServicesCombination(Set<Service> services) {
return true;
}
@Override
public boolean applyIps(Network network, List<? extends PublicIpAddress> ipAddress, Set<Service> services) throws ResourceUnavailableException {
// TODO Auto-generated method stub
return false;
}
@Override
public IpDeployer getIpDeployer(Network network) {
return this;
}
@Override
public List<LoadBalancerTO> updateHealthChecks(Network network, List<LoadBalancingRule> lbrules) {
return null;
}
@Override
public boolean handlesOnlyRulesInTransitionState() {
return true;
}
}