add proof of concept with weather data

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.gitignore

@@ -1,4 +1,6 @@
 build
+.env
+.cache
 
 debian/.debhelper
 debian/chestnut*

chestnut/CMakeLists.txt

@@ -1,7 +1,31 @@
 add_executable(chestnut
+    chestnut.cpp
     chestnut.m.cpp
+    config.cpp
+    weather/weatherclient.cpp
+    weather/weatherdata.cpp
+    weather/weatherdatapublisher.cpp
 )
 target_include_directories(chestnut PUBLIC .)
-target_link_libraries(chestnut pthread)
+target_link_libraries(chestnut pthread fwoopbasis fwoophttp fwoopbasis fwoopencoding fwoopobserve)
 
 install(TARGETS chestnut DESTINATION /opt/bin)
+
+include(GoogleTest)
+add_executable(chestnut_test
+    chestnut.g.cpp
+    config.g.cpp
+    weather/weatherclient.g.cpp
+    weather/weatherdata.g.cpp
+    weather/weatherdatapublisher.g.cpp
+
+    chestnut.cpp
+    config.cpp
+    weather/weatherclient.cpp
+    weather/weatherdata.cpp
+    weather/weatherdatapublisher.cpp
+)
+target_include_directories(chestnut_test PUBLIC .)
+target_link_libraries(chestnut_test fwoopobserve fwoopbasis fwoophttp fwoopbasis fwoopencoding fwoopobserve gtest gtest_main pthread)
+
+gtest_add_tests(TARGET chestnut_test)

chestnut/chestnut.cpp

@@ -0,0 +1,53 @@
+#include <chestnut.h>
+
+#include <chrono>
+#include <config.h>
+#include <functional>
+#include <memory>
+#include <publisher.h>
+#include <thread>
+
+#include <fwoop_log.h>
+
+namespace chestnut {
+
+Chestnut::Chestnut()
+    : d_publisher(std::make_shared<OpenMetricsPublisher>(Config::metricsPort())),
+      d_weatherClient(std::make_shared<WeatherClient>(Config::weatherBaseURL(), Config::weatherLat(),
+                                                      Config::weatherLon(), Config::weatherAPIKey())),
+      d_needStop(false)
+{
+}
+
+Chestnut::Chestnut(std::shared_ptr<Publisher> publisher) : d_publisher(publisher), d_needStop(false) {}
+
+void Chestnut::refresh()
+{
+    while (!d_needStop) {
+        if (Config::isWeatherEnabled()) {
+            d_weatherClient->refresh();
+        }
+        std::this_thread::sleep_for(std::chrono::seconds(Config::refreshInterval()));
+    }
+}
+
+int Chestnut::start()
+{
+    if (!Config::debug()) {
+        fwoop::Log::SetThreshold(fwoop::Log::e_Info);
+    }
+
+    d_publisher->start();
+    d_weatherClient->setPublisher(d_publisher);
+    refresh();
+    return 0;
+}
+
+void Chestnut::stop()
+{
+    d_needStop = true;
+    d_publisher->stop();
+    d_refreshThread.join();
+}
+
+} // namespace chestnut

chestnut/chestnut.g.cpp

@@ -0,0 +1 @@
+#include <chestnut.h>

chestnut/chestnut.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <memory.h>
+
+#include <memory>
+#include <publisher.h>
+#include <thread>
+#include <weather/weatherclient.h>
+
+namespace chestnut {
+
+class Chestnut {
+  private:
+    std::shared_ptr<Publisher> d_publisher;
+    std::shared_ptr<WeatherClient> d_weatherClient;
+    std::thread d_refreshThread;
+    bool d_needStop;
+
+    void refresh();
+
+  public:
+    Chestnut();
+    Chestnut(std::shared_ptr<Publisher> publisher);
+
+    ~Chestnut();
+    Chestnut(const Chestnut &rhs) = delete;
+    Chestnut &operator=(const Chestnut &rhs) = delete;
+    Chestnut(Chestnut &&rhs) = default;
+
+    int start();
+    void stop();
+};
+
+inline Chestnut::~Chestnut() { stop(); }
+
+} // namespace chestnut

chestnut/chestnut.m.cpp

@@ -1,7 +1,5 @@
+#include "chestnut.h"
+#include <fwoop_log.h>
 #include <iostream>
 
-int main(int argc, char* argv[])
-{
-    std::cout << "hello\n";
-    return 0;
-}
+int main(int argc, char *argv[]) { return chestnut::Chestnut().start(); }