pdns/ws-auth.hh

   1 /*
   2  * This file is part of PowerDNS or dnsdist.
   3  * Copyright -- PowerDNS.COM B.V. and its contributors
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * In addition, for the avoidance of any doubt, permission is granted to
  10  * link this program with OpenSSL and to (re)distribute the binaries
  11  * produced as the result of such linking.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22 #pragma once
  23 #include <string>
  24 #include <map>
  25 #include <ctime>
  26 #include <pthread.h>
  27 #include "misc.hh"
  28 #include "namespaces.hh"
  29 #include "webserver.hh"
  30 #include "statbag.hh"
  31
  32 class Ewma
  33 {
  34 public:
  35   Ewma();
  36
  37   void submit(int val);
  38   [[nodiscard]] double get10() const;
  39   [[nodiscard]] double get5() const;
  40   [[nodiscard]] double get1() const;
  41   [[nodiscard]] double getMax() const;
  42
  43 private:
  44   DTime dt;
  45   int d_last{};
  46   double d_10{}, d_5{}, d_1{}, d_max{};
  47 };
  48
  49 class AuthWebServer
  50 {
  51 public:
  52   AuthWebServer();
  53   void go(StatBag& stats);
  54   static string makePercentage(const double& val);
  55
  56 private:
  57   void indexfunction(HttpRequest* req, HttpResponse* resp);
  58   void jsonstat(HttpRequest* req, HttpResponse* resp);
  59   void registerApiHandler(const string& url, std::function<void(HttpRequest*, HttpResponse*)> handler);
  60   void webThread();
  61   void statThread(StatBag& stats);
  62
  63   time_t d_start;
  64   double d_min10, d_min5, d_min1;
  65   Ewma d_queries, d_cachehits, d_cachemisses;
  66   Ewma d_qcachehits, d_qcachemisses;
  67   unique_ptr<WebServer> d_ws{nullptr};
  68 };
  69
  70 void apiDocs(HttpRequest* req, HttpResponse* resp);