git.sesse.net Git - casparcg/blob - core/diagnostics/subject_diagnostics.cpp

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Helge Norberg, helge.norberg@svt.se
  20 */
  21
  22 #include "../StdAfx.h"
  23
  24 #include "subject_diagnostics.h"
  25
  26 #include "call_context.h"
  27
  28 #include <common/diagnostics/graph.h>
  29 #include <common/timer.h>
  30
  31 #include <boost/lexical_cast.hpp>
  32
  33 #include <atomic>
  34 #include <mutex>
  35 #include <unordered_map>
  36
  37 namespace {
  38
  39 int64_t create_id()
  40 {
  41         static std::atomic<int64_t> counter { 0 };
  42
  43         return ++counter;
  44 }
  45
  46 }
  47
  48 namespace caspar { namespace core { namespace diagnostics {
  49
  50 static const double SECONDS_BETWEEN_FULL_STATE = 0.4;
  51
  52 class subject_graph : public caspar::diagnostics::spi::graph_sink
  53 {
  54         spl::shared_ptr<monitor::subject>               subject_                                                = spl::make_shared<monitor::subject>("/" + boost::lexical_cast<std::string>(create_id()));
  55         call_context                                                    context_                                                = call_context::for_thread();
  56         std::mutex                                                              mutex_;
  57         std::wstring                                                    text_;
  58         std::unordered_map<std::string, int>    colors_;
  59         caspar::timer                                                   time_since_full_state_send_;
  60 public:
  61         subject_graph()
  62         {
  63         }
  64
  65         void activate() override
  66         {
  67                 subject_->attach_parent(get_or_create_subject());
  68         }
  69
  70         void set_text(const std::wstring& value) override
  71         {
  72                 std::lock_guard<std::mutex> lock(mutex_);
  73
  74                 text_ = value;
  75
  76                 *subject_ << monitor::message("/text") % text_;
  77         }
  78
  79         void set_value(const std::string& name, double value) override
  80         {
  81                 *subject_ << monitor::message("/value/" + name) % value;
  82
  83                 send_full_state_if_long_ago();
  84         }
  85
  86         void set_color(const std::string& name, int color) override
  87         {
  88                 std::lock_guard<std::mutex> lock(mutex_);
  89
  90                 colors_[name] = color;
  91
  92                 *subject_ << monitor::message("/color/" + name) % color;
  93         }
  94
  95         void set_tag(caspar::diagnostics::tag_severity severity, const std::string& name) override
  96         {
  97                 std::string severity_path;
  98
  99                 switch (severity)
 100                 {
 101                 case caspar::diagnostics::tag_severity::INFO:
 102                         severity_path = "info/";
 103                         break;
 104                 case caspar::diagnostics::tag_severity::WARNING:
 105                         severity_path = "warning/";
 106                         break;
 107                 }
 108
 109                 *subject_ << monitor::message("/tag/" + severity_path + name);
 110
 111                 send_full_state_if_long_ago();
 112         }
 113
 114         void auto_reset() override
 115         {
 116         }
 117
 118         monitor::subject& subject()
 119         {
 120                 return *subject_;
 121         }
 122 private:
 123         void send_full_state_if_long_ago()
 124         {
 125                 std::lock_guard<std::mutex> lock(mutex_);
 126
 127                 if (time_since_full_state_send_.elapsed() > SECONDS_BETWEEN_FULL_STATE)
 128                 {
 129                         send_full_state();
 130                 }
 131         }
 132
 133         void send_full_state()
 134         {
 135                 *subject_ << monitor::message("/text") % text_;
 136
 137                 if (context_.video_channel != -1)
 138                         *subject_ << monitor::message("/context/channel") % context_.video_channel;
 139
 140                 if (context_.layer != -1)
 141                         *subject_ << monitor::message("/context/layer") % context_.layer;
 142
 143                 for (const auto& color : colors_)
 144                         *subject_ << monitor::message("/color/" + color.first) % color.second;
 145
 146                 time_since_full_state_send_.restart();
 147         }
 148 };
 149
 150 spl::shared_ptr<monitor::subject> get_or_create_subject()
 151 {
 152         static auto diag_subject = []()
 153         {
 154                 auto subject = spl::make_shared<monitor::subject>("/diag");
 155
 156                 caspar::diagnostics::spi::register_sink_factory([=]()
 157                 {
 158                         return spl::make_shared<subject_graph>();
 159                 });
 160
 161                 return subject;
 162         }();
 163
 164         return diag_subject;
 165 }
 166
 167 }}}