Remove main loop from application file

Isolate main in its own file for maximum flexibility
when linking.

Change-Id: I7b1f591386d69a7044c65e7aab2116626166e4ff
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/mainloop.cpp b/mainloop.cpp
new file mode 100644
index 0000000..6244b91
--- /dev/null
+++ b/mainloop.cpp
@@ -0,0 +1,73 @@
+/**
+ * Copyright © 2016 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <iostream>
+#include <memory>
+#include <thread>
+#include "sensorset.hpp"
+#include "sensorcache.hpp"
+#include "hwmon.hpp"
+#include "sysfs.hpp"
+
+int serverMain(const char* path)
+{
+    // Check sysfs for available sensors.
+    auto sensors = std::make_unique<SensorSet>(path);
+    auto sensor_cache = std::make_unique<SensorCache>();
+
+    // TODO: Issue#3 - Need to make calls to the dbus sensor cache here to
+    //       ensure the objects all exist?
+
+    // Polling loop.
+    while (true)
+    {
+        // Iterate through all the sensors.
+        for (auto& i : *sensors)
+        {
+            if (i.second.find(hwmon::entry::input) != i.second.end())
+            {
+                // Read value from sensor.
+                int value = 0;
+                read_sysfs(make_sysfs_path(path,
+                                           i.first.first, i.first.second,
+                                           hwmon::entry::input),
+                           value);
+
+                // Update sensor cache.
+                if (sensor_cache->update(i.first, value))
+                {
+                    // TODO: Issue#4 - dbus event here.
+                    std::cout << i.first.first << i.first.second << " = "
+                              << value << std::endl;
+                }
+            }
+        }
+
+        // Sleep until next interval.
+        // TODO: Issue#5 - Make this configurable.
+        // TODO: Issue#6 - Optionally look at polling interval sysfs entry.
+        {
+            using namespace std::literals::chrono_literals;
+            std::this_thread::sleep_for(1s);
+        }
+
+        // TODO: Issue#7 - Should probably periodically check the SensorSet
+        //       for new entries.
+    }
+
+    return 0;
+}
+
+// vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4