Utilisation de prometheus-cpp-dev

.devcontainer/Dockerfile

@@ -12,17 +12,22 @@ RUN set -eux; \
   apt-get update; \
   apt-get install -y \
     libncurses-dev \
-    libmicrohttpd-dev;\
+    libmicrohttpd-dev \
-  apt-get clean
+    libcurl4-openssl-dev \
+    zlib1g-dev \
+    prometheus-cpp-dev
 
 RUN set -eux; \
-  git clone https://github.com/jelmd/libprom.git; \
+  apt-get update; \
-  cd libprom; \
+  apt-get install -y \
-  make build; \
+    libpaho-mqtt-dev
-  cd prom/build; \
+
-  make install; \
+  RUN set -eux; \
-  cd ../../promhttp/build; \
+  apt-get update; \
-  make install;
+  apt-get install -y \
+    librabbitmq4 \
+    librabbitmq-dev;\
+  apt-get clean
 
 WORKDIR /root
 

.gitignore

@@ -1 +1 @@
-/output/
+/build/

.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"
+        }
+    ]
+}
+

.vscode/tasks.json

@@ -1,33 +1,21 @@
 {
+    "version": "2.0.0",
     "tasks": [
         {
-            "type": "cppbuild",
+            "label": "CMake: build",
-            "label": "C/C++: gcc build active file",
+            "type": "shell",
-            "command": "/usr/bin/gcc",
+            "command": "cmake --build build --config Debug",
-            "args": [
-                "-fdiagnostics-color=always",
-                "-g",
-                "${workspaceFolder}${pathSeparator}main.cpp",
-                "-lm",
-                "-lncursesw",
-                "-lprom",
-                "-lpromhttp",
-                "-lmicrohttpd",
-                "-o",
-                "${fileDirname}/${fileBasenameNoExtension}"
-            ],
-            "options": {
-                "cwd": "${fileDirname}"
-            },
-            "problemMatcher": [
-                "$gcc"
-            ],
             "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"
 }

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}
+)

main.cpp

@@ -6,10 +6,10 @@
 #include "main.h"
 #include "AutomForArduino.cpp"
 
-extern "C" {
+#include <prometheus/counter.h>
-  #include "libprom/prom.h"
+#include <prometheus/gauge.h>
-  #include "libprom/promhttp.h"
+#include <prometheus/registry.h>
-}
+#include <prometheus/exposer.h>
 
 // Constantes de fonctionnement
 #define LEVEL_MIN 2
@@ -34,10 +34,11 @@ TemporisationRetardMontee tempo4(2000);
 
 // Prometheus
 // ************************************************************
-struct MHD_Daemon *server;
+using namespace prometheus;
 
-prom_counter_t *pm_pompe;
+std::shared_ptr<Registry> registry;
-prom_gauge_t *pm_debit;
+Gauge* debit_entree = nullptr;
+Gauge* debit_sortie = nullptr;
 // ************************************************************
 
 int main(int argc, char *argv[])
@@ -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;
 }
 
@@ -781,6 +781,23 @@ void AffichageGraphe(int y, int x, double value)
  */
 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" };
@@ -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" };
+  debit_entree->Set(_digital[IN_FLOW_OUT].dvalue);
-  std::array<const char*, 1> labels2 = { "entree" };
+  debit_sortie->Set(_digital[IN_FLOW_IN].dvalue);
-  prom_gauge_set(pm_debit, _digital[IN_FLOW_OUT].dvalue, labels1.data());
-  prom_gauge_set(pm_debit, _digital[IN_FLOW_IN].dvalue, labels2.data());
 }