Moving to a poll method for workers, and daggyd-preserved capacities

libdaggy/include/daggy/Utilities.hpp

@@ -49,7 +49,8 @@ namespace daggy {
   {
     Ok             = 200,
     Not_Found      = 404,
-    Not_Acceptable = 406
+    Not_Acceptable = 406,
+    Server_Error   = 500
   };
 
   struct HTTPResponse

libdaggy/include/daggy/executors/task/DaggyRunnerTaskExecutor.hpp

@@ -58,13 +58,21 @@ namespace daggy::executors::task {
       std::string taskName;
       std::string runnerURL;
       uint32_t retries;
+      daggy_runner::Capacity resources;
     };
 
     // Resolves jobs through polling
     std::atomic<bool> running_;
     std::thread monitorWorker_;
 
-    std::unordered_set<std::string> runners_;
+    struct RunnerCapacity
+    {
+      daggy_runner::Capacity current;
+      daggy_runner::Capacity total;
+    };
+    std::mutex runnersGuard_;
+    std::unordered_map<std::string, RunnerCapacity> runners_;
+
     std::mutex rtGuard_;
     std::unordered_map<std::pair<DAGRunID, std::string>, RunningTask>
         runningTasks_;