// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License.  Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
// 
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.network.lb;

import java.util.List;

import com.cloud.api.commands.CreateLBStickinessPolicyCmd;
import com.cloud.api.commands.CreateLoadBalancerRuleCmd;
import com.cloud.api.commands.ListLBStickinessPoliciesCmd;
import com.cloud.api.commands.ListLoadBalancerRuleInstancesCmd;
import com.cloud.api.commands.ListLoadBalancerRulesCmd;
import com.cloud.api.commands.UpdateLoadBalancerRuleCmd;
import com.cloud.exception.InsufficientAddressCapacityException;
import com.cloud.exception.NetworkRuleConflictException;
import com.cloud.exception.ResourceUnavailableException;
import com.cloud.network.rules.LoadBalancer;
import com.cloud.network.rules.StickinessPolicy;
import com.cloud.uservm.UserVm;

public interface LoadBalancingRulesService {
    /**
     * Create a load balancer rule from the given ipAddress/port to the given private port
     * 
     * @param openFirewall
     *            TODO
     * @param cmd
     *            the command specifying the ip address, public port, protocol, private port, and algorithm
     * @return the newly created LoadBalancerVO if successful, null otherwise
     * @throws InsufficientAddressCapacityException
     */
    LoadBalancer createLoadBalancerRule(CreateLoadBalancerRuleCmd lb, boolean openFirewall) throws NetworkRuleConflictException, InsufficientAddressCapacityException;

    LoadBalancer updateLoadBalancerRule(UpdateLoadBalancerRuleCmd cmd);

    boolean deleteLoadBalancerRule(long lbRuleId, boolean apply);

    /**
     * Create a stickiness policy to a load balancer from the given stickiness method name and parameters in
     * (name,value) pairs.
     * 
     * @param cmd
     *            the command specifying the stickiness method name, params (name,value pairs), policy name and
     *            description.
     * @return the newly created stickiness policy if successfull, null otherwise
     * @thows NetworkRuleConflictException
     */
    public StickinessPolicy createLBStickinessPolicy(CreateLBStickinessPolicyCmd cmd) throws NetworkRuleConflictException;

    public boolean applyLBStickinessPolicy(CreateLBStickinessPolicyCmd cmd) throws ResourceUnavailableException;
    
    boolean deleteLBStickinessPolicy(long stickinessPolicyId, boolean apply);
    /**
     * Assign a virtual machine, or list of virtual machines, to a load balancer.
     */
    boolean assignToLoadBalancer(long lbRuleId, List<Long> vmIds);

    boolean removeFromLoadBalancer(long lbRuleId, List<Long> vmIds);

    boolean applyLoadBalancerConfig(long lbRuleId) throws ResourceUnavailableException;

    /**
     * List instances that have either been applied to a load balancer or are eligible to be assigned to a load
     * balancer.
     * 
     * @param cmd
     * @return list of vm instances that have been or can be applied to a load balancer
     */
    List<? extends UserVm> listLoadBalancerInstances(ListLoadBalancerRuleInstancesCmd cmd);

    /**
     * List load balancer rules based on the given criteria
     * 
     * @param cmd
     *            the command that specifies the criteria to use for listing load balancers. Load balancers can be
     *            listed
     *            by id, name, public ip, and vm instance id
     * @return list of load balancers that match the criteria
     */
    List<? extends LoadBalancer> searchForLoadBalancers(ListLoadBalancerRulesCmd cmd);

    /**
     * List stickiness policies based on the given criteria
     * 
     * @param cmd
     *            the command specifies the load balancing rule id.
     * @return list of stickiness policies that match the criteria.
     */
    List<? extends StickinessPolicy> searchForLBStickinessPolicies(ListLBStickinessPoliciesCmd cmd);

    List<LoadBalancingRule> listByNetworkId(long networkId);

    LoadBalancer findById(long LoadBalancer);

}