task manager feature

.vscode/settings.json

@@ -0,0 +1,72 @@
+{
+    "cmake.generator": "Unix Makefiles",
+    "files.associations": {
+        "array": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "*.tcc": "cpp",
+        "bitset": "cpp",
+        "cctype": "cpp",
+        "chrono": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "codecvt": "cpp",
+        "condition_variable": "cpp",
+        "csignal": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "list": "cpp",
+        "map": "cpp",
+        "set": "cpp",
+        "unordered_map": "cpp",
+        "unordered_set": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "ratio": "cpp",
+        "string": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "fstream": "cpp",
+        "initializer_list": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "mutex": "cpp",
+        "new": "cpp",
+        "ostream": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "thread": "cpp",
+        "cinttypes": "cpp",
+        "typeinfo": "cpp",
+        "any": "cpp",
+        "complex": "cpp",
+        "iomanip": "cpp",
+        "typeindex": "cpp",
+        "variant": "cpp",
+        "future": "cpp",
+        "regex": "cpp",
+        "shared_mutex": "cpp"
+    }
+}

CMakeLists.txt

@@ -1,5 +1,6 @@
 cmake_minimum_required(VERSION 3.15.0)
 
+set (CMAKE_CXX_STANDARD 17)
 set(CMAKE_TOOLCHAIN_FILE cmake/toolchain.cmake)
 
 project(miner_scheduler VERSION 0.1.0)
@@ -11,10 +12,13 @@ add_definitions(-DAPP_GCC="${CMAKE_C_COMPILER_VERSION}")
 include(ExternalProject)
 include(cmake/fmt.cmake)
 include(cmake/wiringOP.cmake)
+include(cmake/easyloggingpp.cmake)
+include(cmake/croncpp.cmake)
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 add_executable(miner_scheduler main.cpp
     cmd_line_args.cpp)
 
-add_dependencies(miner_scheduler fmt wiringOP)
+add_dependencies(miner_scheduler fmt wiringOP easyloggingpp croncpp)
+target_link_options(miner_scheduler PRIVATE -static-libgcc -static-libstdc++)
 

cmake/croncpp.cmake

@@ -0,0 +1,9 @@
+ExternalProject_Add(croncpp
+    GIT_REPOSITORY https://github.com/mariusbancila/croncpp.git
+    CONFIGURE_COMMAND cmake -DCMAKE_INSTALL_PREFIX=<BINARY_DIR> <SOURCE_DIR>
+)
+
+ExternalProject_Get_property(croncpp BINARY_DIR)
+set(CRONCPP_BINARY_DIR ${BINARY_DIR})
+
+include_directories(${CRONCPP_BINARY_DIR}/include)

cmake/easyloggingpp.cmake

@@ -0,0 +1,11 @@
+ExternalProject_Add(easyloggingpp
+    URL https://github.com/amrayn/easyloggingpp/archive/refs/tags/v9.97.0.tar.gz
+    CONFIGURE_COMMAND cmake -DCMAKE_INSTALL_PREFIX=<BINARY_DIR> <SOURCE_DIR>
+    #BUILD_COMMAND ""
+    #INSTALL_COMMAND ""
+)
+
+ExternalProject_Get_property(easyloggingpp BINARY_DIR)
+set(EASYLOGGINGPP_BINARY_DIR ${BINARY_DIR})
+
+include_directories(${EASYLOGGINGPP_BINARY_DIR}/include)

cmake/wiringOP.cmake

@@ -1,7 +1,15 @@
 ExternalProject_Add(wiringOP
-    GIT_REPOSITORY https://github.com/orangepi-xunlong/wiringOP
-    BUILD_IN_SOURCE true
-    CONFIGURE_COMMAND ./build clean
-    BUILD_COMMAND BOARD=orangepipc-h3 ./build
-    INSTALL_COMMAND ""
-)
+    GIT_REPOSITORY git@git.markow.su:markow/WiringOP.git
+    CONFIGURE_COMMAND cmake -DBOARD=orangepipc-h3 <SOURCE_DIR>
+)
+
+ExternalProject_Get_property(wiringOP BINARY_DIR)
+set(WIRING_OP_BINARY_DIR ${BINARY_DIR})
+
+ExternalProject_Get_property(wiringOP SOURCE_DIR)
+set(WIRING_OP_SRC_DIR ${SOURCE_DIR})
+
+include_directories(${WIRING_OP_SRC_DIR}/wiringPi)
+
+link_directories(${WIRING_OP_BINARY_DIR}/lib)
+link_libraries(wiringPi.a pthread m rt)

main.cpp

@@ -1,6 +1,44 @@
+#include <wiringPi.h>
 #include "cmd_line_args.h"
+#include "easylogging++.h"
+#include "easylogging++.cc"
+#include "task_manager.hpp"
+#include <iostream>
+#include <sstream> 
+
+
+INITIALIZE_EASYLOGGINGPP
+
+#define PIN 0 
+
+static std::stringstream schedule = std::stringstream(
+    "0 0 10 ? * MON-SAT HIGH(0)\n"
+    "0 0 13 ? * MON-SAT LOW(0)\n"
+    "0 0 15 ? * MON-SAT HIGH(0)\n"
+    "0 0 19 ? * MON-SAT LOW(0)\n"
+    "* * * * * SUN LOW(0)\n"
+);
 
 int main(int argc, char** argv) {
-    parse_opts(argc, argv);
+    el::Loggers::reconfigureAllLoggers(el::ConfigurationType::ToStandardOutput, "true");
+    el::Loggers::addFlag(el::LoggingFlag::ColoredTerminalOutput);
+
+    parsed_opts opts = parse_opts(argc, argv);
+    if(opts.config_file.empty()) {
+        LOG(ERROR) << "Config file is not set!";
+        return 0;
+    }
+
+    LOG(INFO) << opts.config_file;
+
+    TaskManager manager{schedule, digitalWrite};
+    
+    wiringPiSetup ();
+    pinMode (PIN, OUTPUT);
+
+    while(true) {
+        manager.doWork();
+    }
+
     return 0;
 }

task_manager.hpp

@@ -0,0 +1,157 @@
+#ifndef TASK_MANAGER_HPP
+#define TASK_MANAGER_HPP
+
+#include <iostream>
+#include <sstream> 
+#include <string>
+#include <chrono>
+#include <thread>
+#include <functional>
+#include <croncpp.h>
+#include "easylogging++.h"
+
+using callable = std::function<void (int pin, int value)>;
+
+enum TaskAction {
+    TASK_ACTION_LOW = 0,
+    TASK_ACTION_HIGH = 1,
+    TASK_ACTION_NONE
+};
+
+class Task {
+private:
+    cron::cronexpr cronexpr;
+    TaskAction action;
+    callable action_fn;
+    int pin;
+public:
+    Task(cron::cronexpr cronexpr, std::string command, callable action_fn);
+    Task(Task &task);
+    void doAction();
+    std::time_t next();
+
+    friend std::ostream& operator<< (std::ostream &out, const Task &task);
+};
+
+class TaskManager {
+private:
+    std::map<std::time_t, Task> tasks;
+public:
+    TaskManager(std::istream &stream, callable action_fn);
+
+    int doWork();
+};
+
+inline TaskManager::TaskManager(std::istream &stream, callable action_fn) {
+    std::string line;
+    while (std::getline(stream, line).good()) {
+        auto fields = cron::utils::split(line, ' ');
+        fields.erase(
+            std::remove_if(std::begin(fields), std::end(fields),
+            [](CRONCPP_STRING_VIEW s) {return s.empty(); }),
+            std::end(fields));
+        if (fields.size() != 7)
+            throw cron::bad_cronexpr("cron expression must have 7 fields");
+
+        std::stringstream schedule;
+        for (int i = 0; i < 6; ++i) {
+            schedule << fields[i] << ' ';
+        }
+
+        auto cron = cron::make_cron(schedule.str());
+        std::time_t now = std::time(0);
+        std::time_t next = cron::cron_next(cron, now); 
+
+        tasks.emplace(std::piecewise_construct,
+            std::forward_as_tuple(next),
+            std::forward_as_tuple(cron, fields[6], action_fn));
+    }
+
+    LOG(INFO) << "Schedule table:";
+    for (const auto& [key, value] : tasks) {
+        LOG(INFO) << key << ' ' << value;
+    }
+}
+
+inline int TaskManager::doWork() {
+    auto it = tasks.begin();
+    if(it == tasks.end()) return 0;
+
+    std::time_t now = std::time(0);
+    std::time_t stop = it->first;
+
+    LOG(DEBUG) << "Will sleep till next action " << stop - now << 's';
+
+    std::this_thread::sleep_for(std::chrono::seconds{stop - now});
+
+    it->second.doAction();
+    tasks.emplace(std::piecewise_construct,
+        std::forward_as_tuple(it->second.next()),
+        std::forward_as_tuple(it->second));
+    tasks.erase(it);
+
+    return 0;
+}
+
+inline std::ostream& operator<< (std::ostream &out, const Task &task) {
+    out << "Action: ";
+    switch (task.action)
+    {
+    case TASK_ACTION_HIGH:
+        out << "HIGH";
+        break;
+
+    case TASK_ACTION_LOW:
+        out << "LOW";
+        break;        
+    
+    default:
+        break;
+    }
+    
+    out << " Pin:" << task.pin;
+    return out;
+}
+
+inline Task::Task(cron::cronexpr cronexpr, std::string command, callable action_fn):
+    cronexpr{cronexpr},
+    action{TASK_ACTION_NONE},
+    pin{0},
+    action_fn{action_fn}
+{
+    if(command.rfind("HIGH", 0) == 0) {
+        action = TASK_ACTION_HIGH;
+    } else if((command.rfind("LOW", 0) == 0)) {
+        action = TASK_ACTION_LOW;
+    }
+
+    auto start = command.find('(');
+    auto stop = command.find(')');
+    if(start == std::string::npos && stop == std::string::npos) {
+        throw cron::bad_cronexpr("pin is not set in command");
+    }
+
+    LOG(DEBUG) << "pin to parse " << command.substr(start + 1, stop - start - 1);
+
+    pin = std::stoi(command.substr(start + 1, stop - start - 1));
+}
+
+inline Task::Task(Task &task):
+    cronexpr{task.cronexpr},
+    action{task.action},
+    action_fn{task.action_fn},
+    pin{task.pin}
+{}
+
+inline void Task::doAction() {
+    if(action == TASK_ACTION_NONE) return;
+
+    action_fn(pin, action);
+}
+
+inline std::time_t Task::next() {
+    std::time_t now = std::time(0);
+    return cron::cron_next(cronexpr, now);
+}
+
+#endif //TASK_MANAGER_HPP