Using the Simulator

The following code snippet illustrates the use of the simulator. See also the example solutions we provide for the self-healing and self-optimization cases of mRUBiS, which use the simulator in the very same fashion.

// Load the CompArch model; Architecture is the root element of the model.
Architecture architecture = ...

// Instantiate the utility function and scenario
UtilityFunction utilityFunction = ...
Scenario scenario = ...

// Parameters for the simulator
// Number of simulation rounds
int rounds = ...
/* Delay im ms before the issues are injected in one round.
* A delay avoids overlapping of the points in time when a
* feedback loop has finished and when new issues are injected. */
long injectionDelayMS = ...
/* Whether the simulator should track and provide events
* notifying about changes of the CompArch model. */
boolean eventTrackingEnabled = ...
// Whether the simulator should log to the console in addition to a file.
boolean logToConsole = ...
// Get an instance of the simulator
Simulator simulator = Simulator.FACTORY.createSimulator(architecture,
    utilityFunction, scenario, runs, injectionDelayMS, eventTrackingEnabled,
    Level.CONFIG, logToConsole);
// Add the validators to the simulator
simulator.addValidator(new ComponentLifeCycleAdaptationValidator());
simulator.addValidator(new ComponentStateValidator());
...

// Run the simulation
do {

  // Trigger the simulator to inject issues
  simulator.injectIssues();

  // Run feedback loop and repair the issues
  // TODO

  // Trigger the simulator to validate the model
  simulator.validateModel();

  // Optionally, snapshot the model (see folder "results" of the project)
  // simulator.snapshotModel();

  // Repeat until the simulation is completed
} while (!simulator.isSimulationCompleted());

// Create and show final results (see folder "results" of the project)
simulator.showResults();