/// <summary>
/// Applies a bounding function to the current capacity of the battery, to prohibit discharging below 0 joules,
/// and the prevent charging above the maximum specified capabilities. If the battery exceeds the specification,
/// a warning (for overcharge) or critical error (for discharged) will be logged to the solution.
/// </summary>
/// <param name="battery">The battery parameters to enforce.</param>
/// <param name="pass">The last pass that was executed.</param>
/// <returns>A value indicating whether the requested capacity could be accomplished successfully.</returns>
private bool EnforceBatteryLimits(Battery battery, PassOrbit pass, IPassPhase phase)
{
var success = true;
if (this.currentCapacityJoules < 0)
{
// Orbit parameters are impossible - we've run out of power.
// Error is fatal - denote the problem and abort scheduling.
this.solution.IsSolvable = false;
this.solution.Problems.Add(new ScheduleSolution.SchedulerProblem(
ScheduleSolution.SchedulerProblem.SeverityLevel.Fatal,
$"Orbit parameters for {pass.Name} are impossible. No power remains while scheduling the {phase.PhaseName} for {pass.Name}."));
this.currentCapacityJoules = 0;
// Discharging completely is a fatal error that will prevent the pass from completing
success = false;
}
else if (this.currentCapacityJoules > battery.EffectiveCapacityJ)
{
this.solution.Problems.Add(new ScheduleSolution.SchedulerProblem(
ScheduleSolution.SchedulerProblem.SeverityLevel.Warning,
$"The battery was a contraint during {pass.Name}. {this.currentCapacityJoules:n} J were available, but max charge capacity is {battery.EffectiveCapacityJ:n} J"));
// Apply the cap.
this.currentCapacityJoules = battery.EffectiveCapacityJ;
// Overcharging doesn't prevent the mission from continuing, but indicates inefficiency
success = true;
}
return(success);
}
/// <summary>
/// Initializes a new instance of the <see cref="EditControlViewModel"/> class.
/// </summary>
/// <param name="pass">The pass to edit.</param>
/// <param name="editComplete">The action to execute when the edit is completed.</param>
public EditControlViewModel(PassOrbit pass, Action <PassOrbit> editComplete)
{
this.originalPass = pass;
this.InitPhases();
this.SaveCallback = editComplete;
this.SaveCommand = new RelayCommand(this.SaveCommandHandler);
this.CancelCommand = new RelayCommand(this.CancelCommandHandler);
}
private void ReportProfileNotAvailable(PassOrbit pass, string operation)
{
// No profile could be found that fits the available power and time
// All previous schedules have already been done with the lowest-power option that fits
// so if we're out of power, there is no solution possible.
// If we're out of time, faster devices are needed, or the phase needs lengthened.
this.solution.IsSolvable = false;
this.solution.Problems.Add(new ScheduleSolution.SchedulerProblem(
ScheduleSolution.SchedulerProblem.SeverityLevel.Fatal,
$"Orbit parameters for {pass.Name} are impossible. No devices are capable of performing the {operation} in the required power and time window."));
}
private bool FindProfileForPhase(SortedDictionary <double, IByteStreamProcessor> optimizationMap, PassOrbit pass, IPassPhase phase, long bytes)
{
var allowedTime = phase.EndTime.Subtract(phase.StartTime);
// For the encryption phase, we have an abs max of currentCapacityJoules
// and the time allocated to encryptionPhase.
// Start with the most ideal profile and keep testing until we find one that fits
var foundViableProfile = false;
foreach (var profile in optimizationMap.Values)
{
var timeRequired = bytes / profile.BytesPerSecond;
var energyRequired = bytes * profile.JoulesPerByte;
if (timeRequired > allowedTime.TotalSeconds)
{
// Out of time
foundViableProfile = false;
}
else if (energyRequired > this.currentCapacityJoules)
{
// Out of power
foundViableProfile = false;
}
else
{
// This solution works for this part
this.solution.ViableProfiles[pass][phase.PhaseName] = profile;
phase.TotalEnergyUsed = energyRequired;
foundViableProfile = true;
this.currentCapacityJoules -= energyRequired;
break;
}
}
return(foundViableProfile);
}