Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
       3             :  */
       4             : 
       5             : #include "bgp/bgp_show_handler.h"
       6             : 
       7             : #include "base/regex.h"
       8             : #include "bgp/bgp_peer_internal_types.h"
       9             : #include "bgp/bgp_server.h"
      10             : #include "bgp/bgp_table.h"
      11             : #include "bgp/routing-instance/routing_instance.h"
      12             : 
      13             : using contrail::regex;
      14             : using contrail::regex_match;
      15             : using contrail::regex_search;
      16             : using std::string;
      17             : using std::vector;
      18             : 
      19             : //
      20             : // Fill in information for a table.
      21             : //
      22           0 : static void FillRouteTableSummaryInfo(ShowRouteTableSummary *srts,
      23             :     const BgpSandeshContext *bsc, const BgpTable *table) {
      24           0 :     srts->set_name(table->name());
      25           0 :     srts->set_deleted(table->IsDeleted());
      26           0 :     srts->set_deleted_at(
      27           0 :         UTCUsecToString(table->deleter()->delete_time_stamp_usecs()));
      28           0 :     srts->set_prefixes(table->Size());
      29           0 :     srts->set_primary_paths(table->GetPrimaryPathCount());
      30           0 :     srts->set_secondary_paths(table->GetSecondaryPathCount());
      31           0 :     srts->set_infeasible_paths(table->GetInfeasiblePathCount());
      32           0 :     srts->set_stale_paths(table->GetStalePathCount());
      33           0 :     srts->set_llgr_stale_paths(table->GetLlgrStalePathCount());
      34           0 :     srts->set_paths(srts->get_primary_paths() + srts->get_secondary_paths());
      35           0 :     srts->set_walk_requests(table->walk_request_count());
      36           0 :     srts->set_walk_again_requests(table->walk_again_count());
      37           0 :     srts->set_actual_walks(table->walk_count());
      38           0 :     srts->set_walk_completes(table->walk_complete_count());
      39           0 :     srts->set_walk_cancels(table->walk_cancel_count());
      40           0 :     size_t markers = 0;
      41           0 :     srts->set_pending_updates(table->GetPendingRiboutsCount(&markers));
      42           0 :     srts->set_markers(markers);
      43           0 :     srts->set_listeners(table->GetListenerCount());
      44           0 :     srts->set_walkers(table->walker_count());
      45           0 : }
      46             : 
      47             : //
      48             : // Specialization of BgpShowHandler<>::CallbackCommon.
      49             : //
      50             : // Note that we check the page and iteration limits only after examining all
      51             : // tables for a given routing instance. This simplifies things and requires
      52             : // to only keep track of the next instance rather than the next instance and
      53             : // next table.
      54             : //
      55             : template <>
      56           0 : bool BgpShowHandler<ShowRouteSummaryReq, ShowRouteSummaryReqIterate,
      57             :     ShowRouteSummaryResp, ShowRouteTableSummary>::CallbackCommon(
      58             :     const BgpSandeshContext *bsc, Data *data) {
      59           0 :     uint32_t page_limit = bsc->page_limit() ? bsc->page_limit() : kPageLimit;
      60           0 :     uint32_t iter_limit = bsc->iter_limit() ? bsc->iter_limit() : kIterLimit;
      61           0 :     RoutingInstanceMgr *rim = bsc->bgp_server->routing_instance_mgr();
      62             : 
      63           0 :     regex search_expr(data->search_string);
      64             :     RoutingInstanceMgr::const_name_iterator it1 =
      65           0 :         rim->name_clower_bound(data->next_entry);
      66           0 :     for (uint32_t iter_count = 0; it1 != rim->name_cend(); ++it1) {
      67           0 :         const RoutingInstance *rtinstance = it1->second;
      68           0 :         for (RoutingInstance::RouteTableList::const_iterator it2 =
      69           0 :              rtinstance->GetTables().begin();
      70           0 :              it2 != rtinstance->GetTables().end(); ++it2, ++iter_count) {
      71           0 :             const BgpTable *table = it2->second;
      72           0 :             if ((!regex_search(table->name(), search_expr)) &&
      73           0 :                 (data->search_string != "deleted" || !table->IsDeleted())) {
      74           0 :                 continue;
      75             :             }
      76           0 :             ShowRouteTableSummary srts;
      77           0 :             FillRouteTableSummaryInfo(&srts, bsc, table);
      78           0 :             data->show_list.push_back(srts);
      79           0 :         }
      80           0 :         if (data->show_list.size() >= page_limit)
      81           0 :             break;
      82           0 :         if (iter_count >= iter_limit)
      83           0 :             break;
      84             :     }
      85             : 
      86             :     // All done if we've looked at all instances.
      87           0 :     if (it1 == rim->name_cend() || ++it1 == rim->name_end())
      88           0 :         return true;
      89             : 
      90             :     // Return true if we've reached the page limit, false if we've reached the
      91             :     // iteration limit.
      92           0 :     bool done = data->show_list.size() >= page_limit;
      93           0 :     SaveContextToData(it1->second->name(), done, data);
      94           0 :     return done;
      95           0 : }
      96             : 
      97             : //
      98             : // Specialization of BgpShowHandler<>::FillShowList.
      99             : //
     100             : template <>
     101           0 : void BgpShowHandler<ShowRouteSummaryReq, ShowRouteSummaryReqIterate,
     102             :     ShowRouteSummaryResp, ShowRouteTableSummary>::FillShowList(
     103             :     ShowRouteSummaryResp *resp,
     104             :     const vector<ShowRouteTableSummary> &show_list) {
     105           0 :     resp->set_tables(show_list);
     106           0 : }
     107             : 
     108             : //
     109             : // Handler for ShowRouteSummaryReq.
     110             : //
     111           0 : void ShowRouteSummaryReq::HandleRequest() const {
     112           0 :     RequestPipeline::PipeSpec ps(this);
     113           0 :     RequestPipeline::StageSpec s1;
     114           0 :     TaskScheduler *scheduler = TaskScheduler::GetInstance();
     115             : 
     116           0 :     s1.taskId_ = scheduler->GetTaskId("bgp::ShowCommand");
     117             :     s1.cbFn_ = boost::bind(&BgpShowHandler<
     118             :         ShowRouteSummaryReq,
     119             :         ShowRouteSummaryReqIterate,
     120             :         ShowRouteSummaryResp,
     121           0 :         ShowRouteTableSummary>::Callback, _1, _2, _3, _4, _5);
     122             :     s1.allocFn_ = BgpShowHandler<
     123             :         ShowRouteSummaryReq,
     124             :         ShowRouteSummaryReqIterate,
     125             :         ShowRouteSummaryResp,
     126           0 :         ShowRouteTableSummary>::CreateData;
     127           0 :     s1.instances_.push_back(0);
     128           0 :     ps.stages_.push_back(s1);
     129           0 :     RequestPipeline rp(ps);
     130           0 : }
     131             : 
     132             : //
     133             : // Handler for ShowRouteSummaryReqIterate.
     134             : //
     135           0 : void ShowRouteSummaryReqIterate::HandleRequest() const {
     136           0 :     RequestPipeline::PipeSpec ps(this);
     137           0 :     RequestPipeline::StageSpec s1;
     138           0 :     TaskScheduler *scheduler = TaskScheduler::GetInstance();
     139             : 
     140           0 :     s1.taskId_ = scheduler->GetTaskId("bgp::ShowCommand");
     141             :     s1.cbFn_ = boost::bind(&BgpShowHandler<
     142             :         ShowRouteSummaryReq,
     143             :         ShowRouteSummaryReqIterate,
     144             :         ShowRouteSummaryResp,
     145           0 :         ShowRouteTableSummary>::CallbackIterate, _1, _2, _3, _4, _5);
     146             :     s1.allocFn_ = BgpShowHandler<
     147             :         ShowRouteSummaryReq,
     148             :         ShowRouteSummaryReqIterate,
     149             :         ShowRouteSummaryResp,
     150           0 :         ShowRouteTableSummary>::CreateData;
     151           0 :     s1.instances_.push_back(0);
     152           0 :     ps.stages_.push_back(s1);
     153           0 :     RequestPipeline rp(ps);
     154           0 : }