public void OnCommandLineExecuted(PredictionClient client, string commandLine, bool success)
{
if (success && AzPredictor._azAccountCommands.Contains(commandLine.Trim().Split().FirstOrDefault()))
{
// The context only changes when the user executes the corresponding command successfully.
_azContext?.UpdateContext();
}
if (!_parsedCommandLineHistory.TryRemove(commandLine, out var parsedResult))
{
// We should already parsed the last command in OnCommandLineAccepted which we don't need to do again now.
// Just in case that wasn't correct or that's missing, we clear the _parsedCommandLineHistory and parse it now.
// On possible reason it's missing is because we're still initializing in the task and don't handle
// OnCommandLineAccepted.
_parsedCommandLineHistory.Clear();
parsedResult = GetAstAndMaskedCommandLine(commandLine);
}
if (parsedResult.IsSupported && _surveyHelper?.ShouldPromptSurvey() == true)
{
_surveyHelper.PromptSurvey();
}
_telemetryClient.OnHistory(new HistoryTelemetryData(client, parsedResult.MaskedCommandLine ?? AzPredictorConstants.CommandPlaceholder, success));
_commandLineExecutedCompletion?.SetResult();
}
/// <summary>
/// Constructs a new instance of <see cref="AzPredictor"/> to use in PowerShell's prediction subsystem.
/// </summary>
public AzPredictor()
{
// To make import-module fast, we'll do all the initialization in a task.
// Slow initialization may make opening a PowerShell window slow if "Import-Module" is added to the user's profile.
Task.Run(() =>
{
_settings = Settings.GetSettings();
var azContext = new AzContext()
{
IsInternal = (_settings.SetAsInternal == true) ? true : false,
SurveyId = _settings.SurveyId?.ToString(CultureInfo.InvariantCulture) ?? string.Empty,
};
RegisterDisposableObject(azContext);
_azContext = azContext;
_azContext.UpdateContext();
_telemetryClient = new AzPredictorTelemetryClient(_azContext);
_service = new AzPredictorService(_settings.ServiceUri, _telemetryClient, _azContext);
_isInitialized = true;
});
}
/// <summary>
/// Constructs a new instance of <see cref="AzPredictor"/> to use in PowerShell's prediction subsystem.
/// </summary>
public AzPredictor()
{
_powerShellRuntime = new PowerShellRuntime();
_surveyHelper = new AzPredictorSurveyHelper(_powerShellRuntime);
// To make import-module fast, we'll do all the initialization in a task.
// Slow initialization may make opening a PowerShell window slow if "Import-Module" is added to the user's profile.
Task.Run(() =>
{
_settings = Settings.GetSettings();
_azContext = new AzContext(_powerShellRuntime)
{
IsInternal = (_settings.SetAsInternal == true) ? true : false,
};
_azContext.UpdateContext();
// This will run the script in the right context.
var _ = _azContext.PowerShellVersion;
_telemetryClient = new AzPredictorTelemetryClient(_azContext);
_service = new AzPredictorService(_settings.ServiceUri, _telemetryClient, _azContext);
_isInitialized = true;
});
}
/// <inhericdoc />
public void StartEarlyProcessing(string clientId, IReadOnlyList <string> history)
{
// The context only changes when the user executes the corresponding command.
_azContext?.UpdateContext();
if (history.Count > 0)
{
// We try to find the commands to request predictions for.
// We should only have "start_of_snippet" when there are no enough Az commands for prediction.
// We then ignore that when there are new "start_of_snippet".
// This is the scenario.
// 1. New-AzResourceGroup -Name ****
// 2. $resourceName="Test"
// 3. $resourceLocation="westus2"
// 4. New-AzVM -Name $resourceName -Location $resourceLocation
//
// We'll replace 2 and 3 with "start_of_snippet" but if we request prediction using 2 and 3, that'll reset the
// workflow. We want to predict only by Az commands. That's to use commands 1 and 4.
bool isLastTwoCommandsChanged = false;
if (_lastTwoMaskedCommands.Count == 0)
{
// This is the first time we populate our record. Push the second to last command in history to the
// queue. If there is only one command in history, push the command placeholder.
if (history.Count() > 1)
{
string secondToLastLine = history.TakeLast(AzPredictorConstants.CommandHistoryCountToProcess).First();
var secondToLastCommand = GetAstAndMaskedCommandLine(secondToLastLine);
_lastTwoMaskedCommands.Enqueue(secondToLastCommand.IsSupported ? secondToLastCommand.MaskedValue : AzPredictorConstants.CommandPlaceholder);
if (secondToLastCommand.IsSupported)
{
_service.RecordHistory(secondToLastCommand.Ast);
}
}
else
{
_lastTwoMaskedCommands.Enqueue(AzPredictorConstants.CommandPlaceholder);
// We only extract parameter values from the command line in _service.RecordHistory.
// So we don't need to do that for a placeholder.
}
isLastTwoCommandsChanged = true;
}
string lastLine = history.Last();
var lastCommand = GetAstAndMaskedCommandLine(lastLine);
bool isLastCommandSupported = lastCommand.IsSupported;
if (isLastCommandSupported)
{
if (_lastTwoMaskedCommands.Count == 2)
{
// There are already two commands, dequeue the oldest one.
_lastTwoMaskedCommands.Dequeue();
}
_lastTwoMaskedCommands.Enqueue(lastCommand.Item2);
isLastTwoCommandsChanged = true;
_service.RecordHistory(lastCommand.Item1);
}
else if (_lastTwoMaskedCommands.Count == 1)
{
isLastTwoCommandsChanged = true;
var existingInQueue = _lastTwoMaskedCommands.Dequeue();
_lastTwoMaskedCommands.Enqueue(AzPredictorConstants.CommandPlaceholder);
_lastTwoMaskedCommands.Enqueue(existingInQueue);
}
_telemetryClient.OnHistory(new HistoryTelemetryData(clientId, lastCommand.MaskedValue ?? AzPredictorConstants.CommandPlaceholder));
if (isLastTwoCommandsChanged)
{
// When it's called multiple times, we only need to keep the one for the latest command.
_predictionRequestCancellationSource?.Cancel();
_predictionRequestCancellationSource = new CancellationTokenSource();
// Need to create a new object to hold the string. They're used in a seperate thread the the contents in
// _lastTwoMaskedCommands may change when the method is called again.
var lastTwoMaskedCommands = new List <string>(_lastTwoMaskedCommands);
Exception exception = null;
var hasSentHttpRequest = false;
// We don't need to block on the task. It sends the HTTP request and update prediction list. That can run at the background.
Task.Run(async() =>
{
try
{
await _service.RequestPredictionsAsync(lastTwoMaskedCommands, _predictionRequestCancellationSource.Token);
}
catch (ServiceRequestException e)
{
hasSentHttpRequest = e.IsRequestSent;
exception = e.InnerException;
}
catch (Exception e)
{
exception = e;
}
finally
{
_telemetryClient.OnRequestPrediction(new RequestPredictionTelemetryData(clientId, lastTwoMaskedCommands,
hasSentHttpRequest,
(exception is OperationCanceledException ? null : exception)));
}
}, _predictionRequestCancellationSource.Token);
}
}
(CommandAst Ast, string MaskedValue, bool IsSupported) GetAstAndMaskedCommandLine(string commandLine)
{
var asts = Parser.ParseInput(commandLine, out _, out _);
var allNestedAsts = asts?.FindAll((ast) => ast is CommandAst, true);
var commandAst = allNestedAsts?.LastOrDefault() as CommandAst;
var commandName = commandAst?.CommandElements?.FirstOrDefault().ToString();
bool isSupported = _service.IsSupportedCommand(commandName);
string maskedCommandLine = CommandLineUtilities.MaskCommandLine(commandAst);
return(commandAst, maskedCommandLine, isSupported);
}
}
/// <inhericdoc />
public void StartEarlyProcessing(IReadOnlyList <string> history)
{
// The context only changes when the user executes the corresponding command.
_azContext?.UpdateContext();
if (history.Count > 0)
{
// We try to find the commands to request predictions for.
// We should only have "start_of_snippet" when there are no enough Az commands for prediction.
// We then ignore that when there are new "start_of_snippet".
// This is the scenario.
// 1. New-AzResourceGroup -Name ****
// 2. $resourceName="Test"
// 3. $resourceLocation="westus2"
// 4. New-AzVM -Name $resourceName -Location $resourceLocation
//
// We'll replace 2 and 3 with "start_of_snippet" but if we request prediction using 2 and 3, that'll reset the
// workflow. We want to predict only by Az commands. That's to use commands 1 and 4.
bool isLastTwoCommandsChanged = false;
if (_lastTwoMaskedCommands.Count == 0)
{
// This is the first time we populate our record. Push the second to last command in history to the
// queue. If there is only one command in history, push the command placeholder.
if (history.Count() > 1)
{
string secondToLastLine = history.TakeLast(AzPredictorConstants.CommandHistoryCountToProcess).First();
var secondToLastCommand = GetAstAndMaskedCommandLine(secondToLastLine);
_lastTwoMaskedCommands.Enqueue(secondToLastCommand.Item2);
if (!string.Equals(AzPredictorConstants.CommandPlaceholder, secondToLastCommand.Item2, StringComparison.Ordinal))
{
_service.RecordHistory(secondToLastCommand.Item1);
}
}
else
{
_lastTwoMaskedCommands.Enqueue(AzPredictorConstants.CommandPlaceholder);
// We only extract parameter values from the command line in _service.RecordHistory.
// So we don't need to do that for a placeholder.
}
isLastTwoCommandsChanged = true;
}
string lastLine = history.Last();
var lastCommand = GetAstAndMaskedCommandLine(lastLine);
bool isLastCommandSupported = !string.Equals(AzPredictorConstants.CommandPlaceholder, lastCommand.Item2, StringComparison.Ordinal);
if (isLastCommandSupported)
{
if (_lastTwoMaskedCommands.Count == 2)
{
// There are already two commands, dequeue the oldest one.
_lastTwoMaskedCommands.Dequeue();
}
_lastTwoMaskedCommands.Enqueue(lastCommand.Item2);
isLastTwoCommandsChanged = true;
_service.RecordHistory(lastCommand.Item1);
}
else if (_lastTwoMaskedCommands.Count == 1)
{
isLastTwoCommandsChanged = true;
var existingInQueue = _lastTwoMaskedCommands.Dequeue();
_lastTwoMaskedCommands.Enqueue(AzPredictorConstants.CommandPlaceholder);
_lastTwoMaskedCommands.Enqueue(existingInQueue);
}
_telemetryClient.OnHistory(new HistoryTelemetryData(lastCommand.Item2));
if (isLastTwoCommandsChanged)
{
_service.RequestPredictions(_lastTwoMaskedCommands);
}
}
ValueTuple <CommandAst, string> GetAstAndMaskedCommandLine(string commandLine)
{
var asts = Parser.ParseInput(commandLine, out _, out _);
var allNestedAsts = asts?.FindAll((ast) => ast is CommandAst, true);
var commandAst = allNestedAsts?.LastOrDefault() as CommandAst;
string maskedCommandLine = AzPredictorConstants.CommandPlaceholder;
var commandName = commandAst?.CommandElements?.FirstOrDefault().ToString();
if (_service.IsSupportedCommand(commandName))
{
maskedCommandLine = CommandLineUtilities.MaskCommandLine(commandAst);
}
return(ValueTuple.Create(commandAst, maskedCommandLine));
}
}
/// <inhericdoc />
public void StartEarlyProcessing(IReadOnlyList <string> history)
{
// The context only changes when the user executes the corresponding command.
_azContext?.UpdateContext();
if (history.Count > 0)
{
if (_lastTwoMaskedCommands.Any())
{
_lastTwoMaskedCommands.Dequeue();
}
else
{
// This is the first time we populate our record. Push the second to last command in history to the
// queue. If there is only one command in history, push the command placeholder.
if (history.Count() > 1)
{
string secondToLastLine = history.TakeLast(AzPredictorConstants.CommandHistoryCountToProcess).First();
var secondToLastCommand = GetAstAndMaskedCommandLine(secondToLastLine);
_lastTwoMaskedCommands.Enqueue(secondToLastCommand.Item2);
_service.RecordHistory(secondToLastCommand.Item1);
}
else
{
_lastTwoMaskedCommands.Enqueue(AzPredictorConstants.CommandPlaceholder);
// We only extract parameter values from the command line in _service.RecordHistory.
// So we don't need to do that for a placeholder.
}
}
string lastLine = history.Last();
var lastCommand = GetAstAndMaskedCommandLine(lastLine);
_lastTwoMaskedCommands.Enqueue(lastCommand.Item2);
if ((lastCommand.Item2 != null) && !string.Equals(AzPredictorConstants.CommandPlaceholder, lastCommand.Item2, StringComparison.Ordinal))
{
_service.RecordHistory(lastCommand.Item1);
}
_telemetryClient.OnHistory(new HistoryTelemetryData(lastCommand.Item2));
_service.RequestPredictions(_lastTwoMaskedCommands);
}
ValueTuple <CommandAst, string> GetAstAndMaskedCommandLine(string commandLine)
{
var asts = Parser.ParseInput(commandLine, out _, out _);
var allNestedAsts = asts?.FindAll((ast) => ast is CommandAst, true);
var commandAst = allNestedAsts?.LastOrDefault() as CommandAst;
string maskedCommandLine = null;
var commandName = commandAst?.CommandElements?.FirstOrDefault().ToString();
if (_service.IsSupportedCommand(commandName))
{
maskedCommandLine = CommandLineUtilities.MaskCommandLine(commandAst);
}
else
{
maskedCommandLine = AzPredictorConstants.CommandPlaceholder;
}
return(ValueTuple.Create(commandAst, maskedCommandLine));
}
}