00001 /* 00002 * IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. By 00003 * downloading, copying, installing or using the software you agree to 00004 * this license. If you do not agree to this license, do not download, 00005 * install, copy or use the software. 00006 * 00007 * Intel Open Source License 00008 * 00009 * Copyright (c) 2005 Intel Corporation. All rights reserved. 00010 * 00011 * Redistribution and use in source and binary forms, with or without 00012 * modification, are permitted provided that the following conditions are 00013 * met: 00014 * 00015 * Redistributions of source code must retain the above copyright 00016 * notice, this list of conditions and the following disclaimer. 00017 * 00018 * Redistributions in binary form must reproduce the above copyright 00019 * notice, this list of conditions and the following disclaimer in the 00020 * documentation and/or other materials provided with the distribution. 00021 * 00022 * Neither the name of the Intel Corporation nor the names of its 00023 * contributors may be used to endorse or promote products derived from 00024 * this software without specific prior written permission. 00025 * 00026 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00027 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00028 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00029 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL OR 00030 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00031 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00032 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00033 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00034 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00035 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00036 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00037 */ 00038 #ifndef _CONTACT_MANAGER_H_ 00039 #define _CONTACT_MANAGER_H_ 00040 00041 #include <oasys/debug/Log.h> 00042 #include <oasys/thread/SpinLock.h> 00043 #include <oasys/thread/Timer.h> 00044 #include <oasys/util/StringBuffer.h> 00045 #include <oasys/util/StringUtils.h> 00046 #include "bundling/BundleEventHandler.h" 00047 00048 namespace dtn { 00049 00050 class Contact; 00051 class ConvergenceLayer; 00052 class CLInfo; 00053 class Link; 00054 class LinkSet; 00055 00060 class ContactManager : public BundleEventHandler { 00061 public: 00065 ContactManager(); 00066 virtual ~ContactManager(); 00067 00071 void dump(oasys::StringBuffer* buf) const; 00072 00073 /********************************************** 00074 * 00075 * Link set accessor functions 00076 * 00077 *********************************************/ 00081 void add_link(Link* link); 00082 00086 void del_link(Link* link); 00087 00091 bool has_link(Link* link); 00092 00096 Link* find_link(const char* name); 00097 00109 Link* find_link_to(ConvergenceLayer* cl, 00110 const std::string& nexthop, 00111 const EndpointID& remote_eid = EndpointID::NULL_EID(), 00112 Link::link_type_t type = Link::LINK_INVALID, 00113 u_int states = 0xffffffff); 00114 00119 const LinkSet* links(); 00120 00124 oasys::Lock* lock() { return &lock_; } 00125 00126 /********************************************** 00127 * 00128 * Event handler routines 00129 * 00130 *********************************************/ 00134 void handle_event(BundleEvent* event) 00135 { 00136 dispatch_event(event); 00137 } 00138 00142 void handle_link_available(LinkAvailableEvent* event); 00143 00147 void handle_link_unavailable(LinkUnavailableEvent* event); 00148 00152 void handle_contact_up(ContactUpEvent* event); 00153 00154 /********************************************** 00155 * 00156 * Opportunistic contact routines 00157 * 00158 *********************************************/ 00165 Link* new_opportunistic_link(ConvergenceLayer* cl, 00166 const std::string& nexthop, 00167 const EndpointID& remote_eid); 00168 00169 protected: 00170 00171 LinkSet* links_; 00172 int opportunistic_cnt_; 00173 00177 void reopen_link(Link* link); 00178 00182 class LinkAvailabilityTimer : public oasys::Timer { 00183 public: 00184 LinkAvailabilityTimer(ContactManager* cm, Link* link) 00185 : cm_(cm), link_(link) {} 00186 00187 virtual void timeout(const struct timeval& now); 00188 00189 ContactManager* cm_; 00190 Link* link_; 00191 }; 00192 friend class LinkAvailabilityTimer; 00193 00197 typedef std::map<Link*, LinkAvailabilityTimer*> AvailabilityTimerMap; 00198 AvailabilityTimerMap availability_timers_; 00199 00203 mutable oasys::SpinLock lock_; 00204 }; 00205 00206 00207 } // namespace dtn 00208 00209 #endif /* _CONTACT_MANAGER_H_ */