cmd.IndexOf(AzPredictorConstants.AzCommandMoniker) > 0; // This is the Az cmdlet.
/// <summary>
/// Requests a list of popular commands from service. These commands are used as fall back suggestion
/// if none of the predictions fit for the current input. This method should be called once per session.
/// </summary>
protected virtual void RequestAllPredictiveCommands()
{
// We don't need to block on the task. We send the HTTP request and update commands and predictions list at the background.
Task.Run(async() =>
{
var hasSentHttpRequest = false;
Exception exception = null;
var requestId = Guid.NewGuid().ToString();
try
{
AzPredictorService.SetHttpRequestHeader(_client.DefaultRequestHeaders, _azContext.HashUserId, requestId);
var httpResponseMessage = await _client.GetAsync(_commandsEndpoint);
hasSentHttpRequest = true;
httpResponseMessage.EnsureSuccessStatusCode();
var reply = await httpResponseMessage.Content.ReadAsStringAsync();
var commandsReply = JsonSerializer.Deserialize <List <PredictiveCommand> >(reply, JsonUtilities.DefaultSerializerOptions);
commandsReply.AddRange(_surveyCmdlets);
SetFallbackPredictor(commandsReply);
}
catch (Exception e) when(!(e is OperationCanceledException))
{
exception = e;
}
finally
{
_telemetryClient.RequestId = requestId;
_telemetryClient.OnRequestPrediction(new RequestPredictionTelemetryData(null,
new List <string>(),
hasSentHttpRequest,
exception));
}
// Initialize predictions
var placeholderCommands = new string[] {
AzPredictorConstants.CommandPlaceholder,
AzPredictorConstants.CommandPlaceholder
};
return(AzPredictorUtilities.RequestPredictionAndCollectTelemetryAync(this, _telemetryClient, null, placeholderCommands, null, CancellationToken.None));
});
}
/// <inhericdoc />
public void OnCommandLineAccepted(PredictionClient client, IReadOnlyList <string> history)
{
_commandLineExecutedCompletion = new TaskCompletionSource();
SharedVariable.PredictorCorrelationId = _telemetryClient.CommandId;
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 only send the requests when Az commands are changed. So we'll never add "start_of_snippet" again
// once we have enough Az commands.
// This is the scenario.
// 1. New-AzResourceGroup -Name ****
// 2. $resourceName="Test"
// 3. $resourceLocation="westus2"
// 4. New-AzVM -Name $resourceName -Location $resourceLocation
//
// If the history only contains 1, we'll add "start_of_snippet" to the request.
// 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. So we don't send the request until the command 4.
// That's to use commands 1 and 4 to request prediction.
bool shouldRequestPrediction = 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.MaskedCommandLine : 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.
}
shouldRequestPrediction = true;
}
string lastLine = history.Last();
var lastCommand = GetAstAndMaskedCommandLine(lastLine);
bool isLastCommandSupported = lastCommand.IsSupported;
_parsedCommandLineHistory.TryAdd(lastLine, lastCommand);
if (isLastCommandSupported)
{
if (_lastTwoMaskedCommands.Count == 2)
{
// There are already two commands, dequeue the oldest one.
_lastTwoMaskedCommands.Dequeue();
}
_lastTwoMaskedCommands.Enqueue(lastCommand.MaskedCommandLine);
shouldRequestPrediction = true;
_service.RecordHistory(lastCommand.Ast);
}
else if (_lastTwoMaskedCommands.Count == 1)
{
shouldRequestPrediction = true;
var existingInQueue = _lastTwoMaskedCommands.Dequeue();
_lastTwoMaskedCommands.Enqueue(AzPredictorConstants.CommandPlaceholder);
_lastTwoMaskedCommands.Enqueue(existingInQueue);
}
if (shouldRequestPrediction)
{
// 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);
// We don't need to block on the task. It sends the HTTP request and update prediction list. That can run at the background.
var _ = AzPredictorUtilities.RequestPredictionAndCollectTelemetryAync(_service, _telemetryClient, client, lastTwoMaskedCommands, _commandLineExecutedCompletion, _predictionRequestCancellationSource.Token);
}
}
}
