ready to implement external execution aspect of task

conf/units/all_test.units

@@ -18,6 +18,15 @@
       "required":   true,
       "rectify":    true
     },
+    {
+      "name":       "A DEFINITION THAT IS NOT USED",
+      "target":     "/bin/pwd",
+      "output":     "pass",
+      "rectifier":  "/bin/pwd",
+      "active":     true,
+      "required":   true,
+      "rectify":    true
+    },
     {
       "name":       "dependent test",
       "target":     "/home/phanes/tests/test-script-pass.sh",

examplar.cpp

@@ -7,7 +7,7 @@ int main( )
     bool verbose = true;
     // A Plan is made up of Tasks, and a Suite is made up of Units.
     // A Plan declares what units are executed and a Suite declares the definitions of those units.
-    Conf configuration = Conf("/home/phanes/Development/internal/Examplar/conf/config.json");
+    Conf configuration = Conf("/home/phanes/Development/internal/Examplar/conf/config.json", verbose );
 
     // load the configuration file which contains filepaths to definitions of a plan and definitions of units.
     std::string definitions_file = configuration.get_units_path();
@@ -21,5 +21,9 @@ int main( )
 
     plan.load_definitions( available_definitions, verbose );
 
+    std::cout << "Ready to execute all tasks in Plan." << std::endl;
+
+    plan.execute( verbose );
+
     return 0;
 }

src/loaders/Conf.cpp

@@ -16,10 +16,10 @@ class CONF_UNITSPATH_INVALID: public std::runtime_error { public:
 /// TODO Expand to detect when a directory path is supplied for units_path or plan_path and import all Tasks and Units.
 ///
 /// \param filename - The filename to load the configuration from.
-Conf::Conf( std::string filename ): JSON_Loader()
+Conf::Conf( std::string filename, bool verbose ): JSON_Loader()
 {
     // load the conf file.
-    this->load_json_file( filename, true );
+    this->load_json_file( filename, verbose );
 
     // find the path to the plan file
     if (this->get_serialized(this->plan_path, "plan_path", true) != 0 ) { throw CONF_PLANPATH_INVALID(); }

src/loaders/Conf.h

@@ -13,7 +13,7 @@ private:
     Json::Value units_path;
 
 public:
-    Conf( std::string filename );
+    Conf( std::string filename, bool verbose );
     std::string get_plan_path();
     std::string get_units_path();
 };

src/loaders/Plan.cpp

@@ -107,3 +107,19 @@ void Plan::load_definitions( Suite unit_definitions, bool verbose )
         this->tasks[i].load_definition( tmp_U, verbose );
     }
 }
+
+/// Plan::execute() - Iterates through all tasks in a plan and executes them.
+///
+/// \param verbose
+void Plan::execute( bool verbose )
+{
+    // for each task in this plan
+    for ( int i = 0; i < this->tasks.size(); i++ )
+    {
+        if ( verbose ) {
+            std::cout << "Executing task \"" << this->tasks[i].get_name() << "\"." << std::endl;
+        }
+        this->tasks[i].execute( verbose );
+    }
+}
+

src/loaders/Plan.h

@@ -28,7 +28,10 @@ class Plan: public JSON_Loader
         void load_definitions( Suite unit_definitions, bool verbose );
 
         // fetch a corresponding Unit to a Task
-        void get_definition_from_task(Unit & result, Task input, bool verbose );
+        // void get_definition_from_task(Unit & result, Task input, bool verbose );
+
+        // execute all tasks in this plan
+        void execute( bool verbose );
 };
 
 #endif //FTESTS_PLAN_H

src/loaders/Task.cpp

@@ -5,6 +5,12 @@ class Task_InvalidDataStructure: public std::runtime_error { public:
     Task_InvalidDataStructure(): std::runtime_error("Task: Attempted to access a member of a Task that is not set.") {}
 };
 
+/// Task_InvalidDataStructure - Exception thrown when a Task is defined with invalid JSON.
+class Task_NotReady: public std::runtime_error { public:
+    Task_NotReady(): std::runtime_error("Task: Attempted to access a unit of a Task that is not defined.") {}
+};
+
+
 /// Task::Task() - Constructor for the Task class.  The Task is the building block of a Plan indicating of which Unit to
 /// execute, and its dependencies on other units to have already been completed successfully.
 Task::Task() {
@@ -74,3 +80,19 @@ bool Task::is_complete() {
 bool Task::has_definition() {
     return this->defined;
 }
+
+/// Task::execute - execute a task's unit definition.
+void Task::execute( bool verbose )
+{
+    // throw if unit not coupled
+    if (! this->has_definition() ) { throw Task_NotReady(); }
+
+    if ( verbose )
+    {
+        std::cout << "\t Using unit \"" << this->definition.get_name() << "\"." << std::endl;
+        std::cout << "\t Executing target \"" << this->definition.get_target() << "\"." << std::endl;
+    }
+
+
+
+}

src/loaders/Task.h

@@ -39,6 +39,9 @@ class Task
 
         // fetch the name of a task
         std::string get_name();
+
+        // execute this task's definition
+        void execute( bool verbose );
 };
 
 #endif //FTESTS_TASK_H