Utilisation de prometheus-cpp-dev

2025-12-03 23:20:46 +01:00
parent 3b9d229559
commit 8c23e6b8f9
6 changed files with 170 additions and 77 deletions
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -12,17 +12,22 @@ RUN set -eux; \
  apt-get update; \
  apt-get install -y \
    libncurses-dev \
-    libmicrohttpd-dev;\
-  apt-get clean
+    libmicrohttpd-dev \
+    libcurl4-openssl-dev \
+    zlib1g-dev \
+    prometheus-cpp-dev

 RUN set -eux; \
-  git clone https://github.com/jelmd/libprom.git; \
-  cd libprom; \
-  make build; \
-  cd prom/build; \
-  make install; \
-  cd ../../promhttp/build; \
-  make install;
+  apt-get update; \
+  apt-get install -y \
+    libpaho-mqtt-dev
+
+  RUN set -eux; \
+  apt-get update; \
+  apt-get install -y \
+    librabbitmq4 \
+    librabbitmq-dev;\
+  apt-get clean

 WORKDIR /root

--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-/output/
+/build/
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -0,0 +1,26 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug geii_exporter",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/build/geii_exporter",
+            "args": [],
+            "stopAtEntry": false,
+            "cwd": "${workspaceFolder}",
+            "environment": [],
+            "externalConsole": false,
+            "MIMode": "gdb",
+            "setupCommands": [
+                {
+                    "description": "Activer les pretty-printers pour gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                }
+            ],
+            "preLaunchTask": "CMake: build"
+        }
+    ]
+}
+
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -1,33 +1,21 @@
 {
+    "version": "2.0.0",
    "tasks": [
        {
-            "type": "cppbuild",
-            "label": "C/C++: gcc build active file",
-            "command": "/usr/bin/gcc",
-            "args": [
-                "-fdiagnostics-color=always",
-                "-g",
-                "${workspaceFolder}${pathSeparator}main.cpp",
-                "-lm",
-                "-lncursesw",
-                "-lprom",
-                "-lpromhttp",
-                "-lmicrohttpd",
-                "-o",
-                "${fileDirname}/${fileBasenameNoExtension}"
-            ],
-            "options": {
-                "cwd": "${fileDirname}"
-            },
-            "problemMatcher": [
-                "$gcc"
-            ],
+            "label": "CMake: build",
+            "type": "shell",
+            "command": "cmake --build build --config Debug",
            "group": {
                "kind": "build",
                "isDefault": true
            },
-            "detail": "Task generated by Debugger."
+            "problemMatcher": ["$gcc"]
+        },
+        {
+            "label": "CMake: configure",
+            "type": "shell",
+            "command": "cmake -S . -B build -DCMAKE_EXPORT_COMPILE_COMMANDS=ON",
+            "problemMatcher": ["$gcc"]
        }
-    ],
-    "version": "2.0.0"
-}
+    ]
+}
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -0,0 +1,57 @@
+cmake_minimum_required(VERSION 3.15)
+project(geii_exporter LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+# Activer warnings utiles
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wpedantic")
+
+# Executable principal
+add_executable(geii_exporter
+    main.cpp
+)
+
+# -------------------------------
+# Librairies systèmes
+# -------------------------------
+
+# CURL
+find_package(CURL REQUIRED)
+
+# Microhttpd
+find_library(MICROHTTPD_LIB microhttpd REQUIRED)
+
+# Threads et compression
+find_package(Threads REQUIRED)
+find_library(Z_LIB z REQUIRED)
+
+# ncursesw
+find_library(NCURSESW_LIB ncursesw REQUIRED)
+
+# RabbitMQ C client
+find_library(RABBITMQ_LIB rabbitmq REQUIRED)
+
+# Paho MQTT C client
+find_library(PAHO_MQTT3C_LIB paho-mqtt3c REQUIRED)
+
+# -------------------------------
+# Prometheus C++
+# -------------------------------
+find_package(prometheus-cpp REQUIRED)
+
+# -------------------------------
+# Lien des bibliothèques
+# -------------------------------
+target_link_libraries(geii_exporter
+    prometheus-cpp::core
+    prometheus-cpp::pull
+    ${CURL_LIBRARIES}
+    ${MICROHTTPD_LIB}
+    Threads::Threads
+    ${Z_LIB}
+    ${NCURSESW_LIB}
+    ${RABBITMQ_LIB}
+    ${PAHO_MQTT3C_LIB}
+)
--- a/main.cpp
+++ b/main.cpp
@@ -6,10 +6,10 @@
 #include "main.h"
 #include "AutomForArduino.cpp"

-extern "C" {
-  #include "libprom/prom.h"
-  #include "libprom/promhttp.h"
-}
+#include <prometheus/counter.h>
+#include <prometheus/gauge.h>
+#include <prometheus/registry.h>
+#include <prometheus/exposer.h>

 // Constantes de fonctionnement
 #define LEVEL_MIN 2
@@ -34,14 +34,15 @@ TemporisationRetardMontee tempo4(2000);

 // Prometheus
 // ************************************************************
-struct MHD_Daemon *server;
+using namespace prometheus;

-prom_counter_t *pm_pompe;
-prom_gauge_t *pm_debit;
+std::shared_ptr<Registry> registry;
+Gauge* debit_entree = nullptr;
+Gauge* debit_sortie = nullptr;
 // ************************************************************

 int main(int argc, char *argv[])
-{  
+{
  /* Initialisation */
  ConsoleInit();
  AffichageWindow();
@@ -56,10 +57,10 @@ int main(int argc, char *argv[])
    int ch = getch(); // Lit l'entrée du clavier sans bloquer

    // **** Break loop if escape key (27) is pressed
-    if (ch == 27 || _digital[OUT_END].ivalue) { 
+    if (ch == 27 || _digital[OUT_END].ivalue) {
      break;
    }
-    
+
    // **** Beep
    if (_digital[OUT_BEEP].ivalue)
    {
@@ -75,7 +76,7 @@ int main(int argc, char *argv[])
    Actions();

    ProcessPrometheus();
-    
+
    ProcessException();

    usleep(100000);
@@ -83,8 +84,7 @@ int main(int argc, char *argv[])

  endwin();             // Termine ncurses et rétablit le terminal
  puts("Fin du programme");
-  pcr_destroy(PROM_COLLECTOR_REGISTRY);
-  promhttp_stop_daemon(server);
+
  return 0;
 }

@@ -406,7 +406,7 @@ void ProcessInitValues()
 /**
 * Fonctionnement des moteurs
 */
-double ProcessMoteur(int i) 
+double ProcessMoteur(int i)
 {
  double vitesse = 1.0;
  double t = _digital[i].time / 5000.0;
@@ -567,14 +567,14 @@ void Process()
  t_backup = t;
 }

-double SimulConsoSinusoidale(long t) 
+double SimulConsoSinusoidale(long t)
 {
  double alea = ((long)(t / 100.0) % 600) * 3 / 1800.0 * PI;
  //mvprintw(18, 0, "%ld %f", (long)(t / 100.0), alea);
  return 100 + cos(alea) * cos(alea) * _digital[OUT_FLOW_OUT_AMPLITUDE].dvalue;
 }

-// dt : Intervalle de temps 
+// dt : Intervalle de temps
 double SimulConsoBrown(double valeur_precedente)
 {
  float mu = 0.01 * -((((int)t_elapsed / 30) % 2) * 2 - 1);  // Taux de croissance (1%)
@@ -583,8 +583,8 @@ double SimulConsoBrown(double valeur_precedente)
   mvprintw(8, 40, "(µ %.1f %% ; σ %.1f %%) ", mu * 100, sigma * 100);

  // Nombre aléatoire compris dans [-1 +1]
-  float rand_std_normal = ((double)rand() / RAND_MAX) * 2.0 - 1.0; 
-        
+  float rand_std_normal = ((double)rand() / RAND_MAX) * 2.0 - 1.0;
+
  // Calcule la variation logarithmique pour cette étape
  float drift = (mu - 0.5f * sigma * sigma) * dt;
  float diffusion = sigma * sqrt(dt) * rand_std_normal;
@@ -597,23 +597,23 @@ double SimulConsoBrown(double valeur_precedente)
 */

 /**
- * Initialisation, affichage des parties statiques 
+ * Initialisation, affichage des parties statiques
 */
 void AffichageWindow()
 {
  window = subwin(stdscr, 19, 62, 0, 0);
-  
+
  box(window, 0, 0);
-  
+
  // Titre
  mvwprintw(window, 1, 2, "Château d'eau (11/2024)");
-  
+
  // I/O
  // Ligne du haut
  mvwaddch(window, 2, 0, ACS_LTEE);
  mvwhline(window, 2, 1, 0, 60);
  mvwaddch(window, 2, 61, ACS_RTEE);
-  
+
  // Ligne du bas
  mvwaddch(window, 7, 0, ACS_LTEE);
  mvwhline(window, 7, 1, 0, 60);
@@ -640,14 +640,14 @@ void AffichageWindow()
  mvwprintw(window, 8, 2, "Debit en sortie");
  mvwprintw(window, 9, 2, "Debit en entrée");
  mvwprintw(window, 10, 2, "Volume dans le réservoir");
-  
+
  // Graphe
-  
+
  // Ligne du haut
  mvwaddch(window, 11, 0, ACS_LTEE);
  mvwhline(window, 11, 1, 0, 60);
  mvwaddch(window, 11, 61, ACS_RTEE);
-  
+
  // Ligne du bas
  mvwaddch(window, 13, 0, ACS_LTEE);
  mvwhline(window, 13, 1, 0, 60);
@@ -670,14 +670,14 @@ void AffichageWindow()
  mvwaddch(window, 16, 0, ACS_LTEE);
  mvwhline(window, 16, 1, 0, 60);
  mvwaddch(window, 16, 61, ACS_RTEE);
-  
+
  mvwprintw(window, 14, 2 * 6 - 1, "min");
  mvwprintw(window, 14, 6 * 6 - 2, "low");
  mvwprintw(window, 14, 7 * 6, "high");
  mvwprintw(window, 14, 56, "max");

  // Informations
-  mvwprintw(window, 17, 2, "Mode");  
+  mvwprintw(window, 17, 2, "Mode");

  mvwaddch(window, 16, 18, ACS_TTEE);
  mvwaddch(window, 18, 18, ACS_BTEE);
@@ -750,50 +750,67 @@ void AffichageGraphe(int y, int x, double value)

  for (i = 0; i < entier; i++)
  {
-    mvwaddwstr(window, y, x + i, L"█"); // U+2588 
+    mvwaddwstr(window, y, x + i, L"█"); // U+2588
  }

  int frac = (int)((value - entier) * 4);
  if (frac > 3) // 0.75 -> 0.99
  {
-    mvwaddwstr(window, y, x + i, L"▊"); // U+258A 
+    mvwaddwstr(window, y, x + i, L"▊"); // U+258A
    entier += 1;
  }
  if (frac > 2) // 0.5 -> 0.99
  {
-    mvwaddwstr(window, y, x + i, L"▌"); // U+258C 
+    mvwaddwstr(window, y, x + i, L"▌"); // U+258C
    entier += 1;
  }
  else if (frac > 1) // 0.25 -> 0.49
  {
-    mvwaddwstr(window, y, x + i, L"▎"); //U+258E 
+    mvwaddwstr(window, y, x + i, L"▎"); //U+258E
    entier += 1;
  }

  for (int i = entier; i < 59; i++)
  {
    mvwprintw(window, y, x + i, " ");
-  }  
+  }
 }

 /**
- * Prometheus 
+ * Prometheus
 */
-void InitPrometheus() 
+void InitPrometheus()
 {
+  static Exposer exposer{"0.0.0.0:8099"};
+
+  // Le registre central
+  registry = std::make_shared<Registry>();
+
+  exposer.RegisterCollectable(registry);
+
+  // Exemple : gauge (comme votre debit)
+  auto& gauge_family = BuildGauge()
+        .Name("geii_debit")
+        .Help("Débit en l/s")
+        .Register(*registry);
+
+  debit_entree = &gauge_family.Add({{"numero", "entree"}});
+  debit_sortie = &gauge_family.Add({{"numero", "sortie"}});
+
+  /*
  int result = pcr_init(0,"geii_");

  std::array<const char*, 1> labels = { "numero" };
  pm_pompe = prom_counter_new("pompe_on", "Mise en marche de la pompe"
                       , labels.size(), labels.data());
  pcr_register_metric(pm_pompe);
-  
+
  pm_debit = prom_gauge_new("debit", "Débit en l/s"
                       , labels.size(), labels.data());
  pcr_register_metric(pm_debit);

  promhttp_set_active_collector_registry(NULL);
- 
+
  // Serveur web
  server = promhttp_start_daemon(MHD_USE_SELECT_INTERNALLY
      , 8099, NULL, NULL);
@@ -802,18 +819,18 @@ void InitPrometheus()
    printf("Impossible de démarrer le serveur HTTP\n");
    exit(1);
  }
+  */
 }

 void ProcessPrometheus()
 {
  // raising = 1  => front montant sur la sortie
+  /*
  if (_digital[OUT_PUMP_1].raising) {
    std::array<const char*, 1> labels1 = { "1" };
    prom_counter_inc(pm_pompe, labels1.data());
  }
-    
-  std::array<const char*, 1> labels1 = { "sortie" };
-  std::array<const char*, 1> labels2 = { "entree" };
-  prom_gauge_set(pm_debit, _digital[IN_FLOW_OUT].dvalue, labels1.data());
-  prom_gauge_set(pm_debit, _digital[IN_FLOW_IN].dvalue, labels2.data());
+  */
+  debit_entree->Set(_digital[IN_FLOW_OUT].dvalue);
+  debit_sortie->Set(_digital[IN_FLOW_IN].dvalue);
 }