text: /*
   * Copyright 2014-2016 CyberVision, Inc.
   *
   * Licensed 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.
   */
  
  #ifndef Kaa_FailoverManager_h
  #define Kaa_FailoverManager_h
  
  #import <Foundation/Foundation.h>
  #import "TransportConnectionInfo.h"
  #import "FailoverDecision.h"
  #import "FailoverStrategy.h"
  
  /**
   * Manager responsible for managing current server's failover/connection events
   */
  @protocol FailoverManager
  
  /**
   * Needs to be invoked when a server fail occurs.
   */
  - (void)onServerFailedWithConnectionInfo:(id<TransportConnectionInfo>)connectionInfo failoverStatus:(FailoverStatus)status;
  
  /**
   * Needs to be invoked as soon as current server is changed.
   */
  - (void)onServerChangedWithConnectionInfo:(id<TransportConnectionInfo>)connectionInfo;
  
  /**
   * Needs to be invoked as soon as connection to the current server is established.
   */
  - (void)onServerConnectedWithConnectionInfo:(id<TransportConnectionInfo>)connectionInfo;
  
  /**
   * Needs to be invoked to determine a decision that resolves the failover.
   *
   * @param failoverStatus Current status of the failover.
   *
   * @return Decision which is meant to resolve the failover.
   */
  - (FailoverDecision *)decisionOnFailoverStatus:(FailoverStatus)status;
  
  /**
   *
   * @param failoverStrategy strategy that will be used to resolve failovers.
   *
   * @see FailoverStrategy
   */
  - (void)setFailoverStrategy:(id<FailoverStrategy>)failoverStrategy;
  
  @end
  
  #endif
  