Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
       3             :  */
       4             : 
       5             : #include "base/regex.h"
       6             : #include "bgp/bgp_config.h"
       7             : #include "bgp/bgp_server.h"
       8             : #include "bgp/bgp_show_handler.h"
       9             : #include "bgp/bgp_table.h"
      10             : #include "bgp/routing-instance/routing_instance.h"
      11             : #include "bgp/routing-instance/service_chaining.h"
      12             : #include "bgp/routing-instance/service_chaining_types.h"
      13             : #include "base/address_util.h"
      14             : 
      15             : using contrail::regex;
      16             : using contrail::regex_match;
      17             : using contrail::regex_search;
      18             : using std::string;
      19             : using std::vector;
      20             : 
      21        6912 : static bool FillServiceChainInfo(SCAddress::Family sc_family,
      22             :                                  const string &search_string,
      23             :                                  const regex &search_expr,
      24             :                                  ShowServicechainInfo &info,
      25             :                                  RoutingInstance *rtinstance) {
      26             :     SCAddress sc_addr;
      27        6912 :     Address::Family family = sc_addr.SCFamilyToAddressFamily(sc_family);
      28             :     const BgpTable *table =
      29        6912 :         static_cast<const BgpTable *>(rtinstance->GetTable(family));
      30        6912 :     if (!table)
      31           0 :         return false;
      32             :     IServiceChainMgr *service_chain_mgr =
      33        6912 :         rtinstance->server()->service_chain_mgr(sc_family);
      34        6912 :     if (!service_chain_mgr)
      35           0 :         return false;
      36             : 
      37       11392 :     if ((!regex_search(table->name(), search_expr)) &&
      38        4480 :         (search_string != "pending" ||
      39        7744 :          !service_chain_mgr->ServiceChainIsPending(rtinstance)) &&
      40        4288 :         (search_string != "down" ||
      41       11392 :          service_chain_mgr->ServiceChainIsUp(rtinstance)) &&
      42        3648 :         (search_string != "deleted" || !table->IsDeleted())) {
      43        3648 :         return false;
      44             :     }
      45        3264 :     const BgpInstanceConfig *rt_config = rtinstance->config();
      46        3264 :     if (!rt_config)
      47          64 :         return false;
      48             : 
      49             :     const ServiceChainConfig *sc_config =
      50        3200 :                        rt_config->service_chain_info(sc_family);
      51        3200 :     if (!sc_config)
      52        2864 :         return false;
      53             : 
      54         336 :     info.set_family(Address::FamilyToString(family));
      55         336 :     info.set_src_virtual_network(rtinstance->GetVirtualNetworkName());
      56         336 :     info.set_dest_virtual_network(GetVNFromRoutingInstance(
      57         336 :                                      sc_config->routing_instance));
      58         336 :     info.set_service_instance(sc_config->service_instance);
      59         336 :     info.set_src_rt_instance(rtinstance->name());
      60         336 :     info.set_dest_rt_instance(sc_config->routing_instance);
      61         336 :     if (sc_config->source_routing_instance.empty()) {
      62           0 :         info.set_connected_rt_instance(rtinstance->name());
      63             :     } else {
      64         336 :         info.set_connected_rt_instance(sc_config->source_routing_instance);
      65             :     }
      66         336 :     info.set_service_chain_addr(sc_config->service_chain_address);
      67         336 :     info.set_service_chain_id(sc_config->service_chain_id);
      68             : 
      69         336 :     return service_chain_mgr->FillServiceChainInfo(rtinstance, &info);
      70             : }
      71             : 
      72             : // Specialization of BgpShowHandler<>::CallbackCommon.
      73             : template <>
      74         368 : bool BgpShowHandler<ShowServiceChainReq, ShowServiceChainReqIterate,
      75             :     ShowServiceChainResp, ShowServicechainInfo>::CallbackCommon(
      76             :     const BgpSandeshContext *bsc, Data *data) {
      77         368 :     uint32_t page_limit = bsc->page_limit() ? bsc->page_limit() : kPageLimit;
      78         368 :     uint32_t iter_limit = bsc->iter_limit() ? bsc->iter_limit() : kIterLimit;
      79         368 :     RoutingInstanceMgr *rim = bsc->bgp_server->routing_instance_mgr();
      80             : 
      81         368 :     regex search_expr(data->search_string);
      82             :     RoutingInstanceMgr::const_name_iterator it =
      83         368 :         rim->name_clower_bound(data->next_entry);
      84        2096 :     for (uint32_t iter_count = 0; it != rim->name_cend(); ++it, ++iter_count) {
      85        1728 :         RoutingInstance *rinstance = it->second;
      86        1728 :         ShowServicechainInfo inet_info;
      87        1728 :         if (FillServiceChainInfo(SCAddress::INET, data->search_string,
      88             :                                  search_expr, inet_info, rinstance)) {
      89          84 :             data->show_list.push_back(inet_info);
      90             :         }
      91        1728 :         ShowServicechainInfo inet6_info;
      92        1728 :         if (FillServiceChainInfo(SCAddress::INET6, data->search_string,
      93             :                                  search_expr, inet6_info, rinstance)) {
      94          84 :             data->show_list.push_back(inet6_info);
      95             :         }
      96        1728 :         ShowServicechainInfo evpn_info;
      97        1728 :         if (FillServiceChainInfo(SCAddress::EVPN, data->search_string,
      98             :                                  search_expr, evpn_info, rinstance)) {
      99          84 :             data->show_list.push_back(evpn_info);
     100             :         }
     101        1728 :         ShowServicechainInfo evpn6_info;
     102        1728 :         if (FillServiceChainInfo(SCAddress::EVPN6, data->search_string,
     103             :                                  search_expr, evpn6_info, rinstance)) {
     104          84 :             data->show_list.push_back(evpn6_info);
     105             :         }
     106             : 
     107        1728 :         if (data->show_list.size() >= page_limit)
     108           0 :             break;
     109        1728 :         if (iter_count >= iter_limit)
     110           0 :             break;
     111        1728 :     }
     112             : 
     113             :     // All done if we've looked at all instances.
     114         368 :     if (it == rim->name_cend() || ++it == rim->name_cend())
     115         368 :         return true;
     116             : 
     117             :     // Return true if we've reached the page limit, false if we've reached the
     118             :     // iteration limit.
     119           0 :     bool done = data->show_list.size() >= page_limit;
     120           0 :     SaveContextToData(it->second->name(), done, data);
     121           0 :     return done;
     122         368 : }
     123             : 
     124             : // Specialization of BgpShowHandler<>::FillShowList.
     125             : template <>
     126         336 : void BgpShowHandler<ShowServiceChainReq, ShowServiceChainReqIterate,
     127             :     ShowServiceChainResp, ShowServicechainInfo>::FillShowList(
     128             :         ShowServiceChainResp *resp,
     129             :         const vector<ShowServicechainInfo> &show_list) {
     130         336 :     resp->set_service_chain_list(show_list);
     131         336 : }
     132             : 
     133             : // Handler for ShowServiceChainReq.
     134         368 : void ShowServiceChainReq::HandleRequest() const {
     135         368 :     RequestPipeline::PipeSpec ps(this);
     136         368 :     RequestPipeline::StageSpec s1;
     137         368 :     TaskScheduler *scheduler = TaskScheduler::GetInstance();
     138             : 
     139         368 :     s1.taskId_ = scheduler->GetTaskId("bgp::ServiceChain");
     140             :     s1.cbFn_ = boost::bind(&BgpShowHandler<
     141             :         ShowServiceChainReq,
     142             :         ShowServiceChainReqIterate,
     143             :         ShowServiceChainResp,
     144         368 :         ShowServicechainInfo>::Callback, _1, _2, _3, _4, _5);
     145             :     s1.allocFn_ = BgpShowHandler<
     146             :         ShowServiceChainReq,
     147             :         ShowServiceChainReqIterate,
     148             :         ShowServiceChainResp,
     149         368 :         ShowServicechainInfo>::CreateData;
     150         368 :     s1.instances_.push_back(0);
     151         368 :     ps.stages_.push_back(s1);
     152         368 :     RequestPipeline rp(ps);
     153         368 : }
     154             : 
     155             : //
     156             : // Handler for ShowServiceChainReqIterate.
     157             : //
     158           0 : void ShowServiceChainReqIterate::HandleRequest() const {
     159           0 :     RequestPipeline::PipeSpec ps(this);
     160           0 :     RequestPipeline::StageSpec s1;
     161           0 :     TaskScheduler *scheduler = TaskScheduler::GetInstance();
     162             : 
     163           0 :     s1.taskId_ = scheduler->GetTaskId("bgp::ServiceChain");
     164             :     s1.cbFn_ = boost::bind(&BgpShowHandler<
     165             :         ShowServiceChainReq,
     166             :         ShowServiceChainReqIterate,
     167             :         ShowServiceChainResp,
     168           0 :         ShowServicechainInfo>::CallbackIterate, _1, _2, _3, _4, _5);
     169             :     s1.allocFn_ = BgpShowHandler<
     170             :         ShowServiceChainReq,
     171             :         ShowServiceChainReqIterate,
     172             :         ShowServiceChainResp,
     173           0 :         ShowServicechainInfo>::CreateData;
     174           0 :     s1.instances_.push_back(0);
     175           0 :     ps.stages_.push_back(s1);
     176           0 :     RequestPipeline rp(ps);
     177           0 : }