public async Task Completions_suggest_existing_DataFrame_variables()
{
var kernel = new CSharpKernel()
.UseNugetDirective();
await new DataFrameTypeGeneratorExtension().OnLoadAsync(kernel);
await kernel.SubmitCodeAsync($@"
#r ""{typeof(DataFrame).Assembly.Location}""
using Microsoft.Data.Analysis;
");
var dataFrameVariableName = "myDataFrame";
await kernel.SetVariableAsync(dataFrameVariableName, CreateDataFrame());
var code = "#!linqify ";
var result = await kernel.SendAsync(new RequestCompletions(code, new LinePosition(0, code.Length)));
result.KernelEvents.ToSubscribedList().Should().ContainSingle <CompletionsProduced>()
.Which
.Completions
.Select(c => c.DisplayText)
.Should()
.Contain(dataFrameVariableName);
}
public static CSharpKernel UseAspNetCore(this CSharpKernel kernel)
{
InteractiveHost interactiveHost = null;
var directive = new Command("#!aspnet", "Activate ASP.NET Core")
{
Handler = CommandHandler.Create(async() =>
{
if (interactiveHost is {})
{
return;
}
var interactiveLoggerProvider = new InteractiveLoggerProvider();
kernel.AddMiddleware(async(command, context, next) =>
{
// REVIEW: Is there a way to log even when there's no command in progress?
// This is currently necessary because the #!log command uses KernelInvocationContext.Current in
// its LogEvents.Subscribe callback and KernelInvocationContext.Current is backed by an AsyncLocal.
// Is there a way to log to diagnostic output without KernelInvocationContext.Current?
using (command is SubmitCode ? interactiveLoggerProvider.SubscribePocketLogerWithCurrentEC() : null)
{
await next(command, context).ConfigureAwait(false);
}
});
// The middleware doesn't cover the current command's executions so we need this to capture startup logs.
using (interactiveLoggerProvider.SubscribePocketLogerWithCurrentEC())
{
// We could try to manage the host's lifetime, but for now just stop the kernel if you want to stop the host.
interactiveHost = new InteractiveHost(interactiveLoggerProvider);
var startHostTask = interactiveHost.StartAsync();
var rDirectives = string.Join(Environment.NewLine, _references.Select(a => $"#r \"{a.Location}\""));
var usings = string.Join(Environment.NewLine, _namespaces.Select(ns => $"using {ns};"));
await kernel.SendAsync(new SubmitCode($"{rDirectives}{Environment.NewLine}{usings}"), CancellationToken.None).ConfigureAwait(false);
await startHostTask.ConfigureAwait(false);
var httpClient = HttpClientFormatter.CreateEnhancedHttpClient(interactiveHost.Address, interactiveLoggerProvider);
await kernel.SetValueAsync <IApplicationBuilder>("App", interactiveHost.App).ConfigureAwait(false);
await kernel.SetValueAsync <IEndpointRouteBuilder>("Endpoints", interactiveHost.Endpoints).ConfigureAwait(false);
await kernel.SetValueAsync <HttpClient>("HttpClient", httpClient).ConfigureAwait(false);
}
})
};
public async Task It_returns_the_list_of_intrinsic_kernel_commands()
{
using var kernel = new CSharpKernel();
var result = await kernel.SendAsync(new RequestKernelInfo());
var events = result.KernelEvents.ToSubscribedList();
events.Should()
.ContainSingle <KernelInfoProduced>()
.Which
.KernelInfo
.SupportedKernelCommands
.Select(info => info.Name)
.Should()
.Contain(
nameof(SubmitCode));
}
public async Task It_returns_the_list_of_directives_commands()
{
using var kernel = new CSharpKernel()
.UseNugetDirective()
.UseWho();
var result = await kernel.SendAsync(new RequestKernelInfo());
var events = result.KernelEvents.ToSubscribedList();
events.Should()
.ContainSingle <KernelInfoProduced>()
.Which
.KernelInfo
.SupportedDirectives
.Select(info => info.Name)
.Should()
.Contain("#!who", "#!who", "#r");
}
public async Task Script_state_is_available_within_middleware_pipeline()
{
var variableCountBeforeEvaluation = 0;
var variableCountAfterEvaluation = 0;
using var kernel = new CSharpKernel();
kernel.AddMiddleware(async(command, context, next) =>
{
var k = context.HandlingKernel as CSharpKernel;
await next(command, context);
variableCountAfterEvaluation = k.ScriptState.Variables.Length;
});
await kernel.SendAsync(new SubmitCode("var x = 1;"));
variableCountBeforeEvaluation.Should().Be(0);
variableCountAfterEvaluation.Should().Be(1);
}
public async Task Events_published_by_child_kernel_are_visible_in_parent_kernel()
{
var subKernel = new CSharpKernel();
using var compositeKernel = new CompositeKernel
{
subKernel
};
var events = compositeKernel.KernelEvents.ToSubscribedList();
await subKernel.SendAsync(new SubmitCode("var x = 1;"));
events
.Select(e => e.GetType())
.Should()
.ContainInOrder(
typeof(CodeSubmissionReceived),
typeof(CompleteCodeSubmissionReceived),
typeof(CommandSucceeded));
}
private static async Task ConfigureRover(CSharpKernel csharpKernel)
{
Microsoft.DotNet.Interactive.Formatting.Formatter.ListExpansionLimit = 42;
using var _ = Log.OnEnterAndExit();
await LoadAssemblyAndAddNamespace <RoverRobot>(csharpKernel);
await LoadAssemblyAndAddNamespace <ResourceScanner>(csharpKernel);
await AddNamespace(csharpKernel, typeof(ImageProcessing.ImageExtensions));
var RoverBody = new RoverRobot(PiTop4Board.Instance.GetOrCreateExpansionPlate(),
PiTop4Board.Instance.GetOrCreateCamera <StreamingCamera>(0),
RoverRobotConfiguration.Default);
var RoverBrain = new RoverRobotAgent();
var ResourceScanner = new ResourceScanner();
RoverBody.BlinkAllLights();
await csharpKernel.SetVariableAsync(nameof(RoverBody), RoverBody);
await csharpKernel.SetVariableAsync(nameof(RoverBrain), RoverBrain);
await csharpKernel.SetVariableAsync(nameof(ResourceScanner), ResourceScanner);
var command = new Command("#!reset", "Reset RoverBody, RoverBrain and BrainState")
{
new Option <bool>("--body", description: "Resets the rover body"),
new Option <bool>("--brain", description: "Resets the rover brain"),
new Option <bool>("--state", description: "Resets the rover brain state"),
new Option <bool>("--all", description: "Resets the entire rover"),
};
command.Handler = CommandHandler.Create <bool, bool, bool, bool, KernelInvocationContext>(async(body, brain, state, all, context) =>
{
if (body || brain || state || all)
{
var code = new StringBuilder();
var resetTarget = new List <string>();
if (brain || all)
{
code.AppendLine($"{nameof(RoverBrain)}.Reset();");
resetTarget.Add("brain");
}
if (state || all)
{
code.AppendLine($"{nameof(RoverBrain)}.ClearState();");
resetTarget.Add("state");
}
if (body || all)
{
code.AppendLine($"{nameof(RoverBody)}.Reset();");
resetTarget.Add("body");
}
var value = context.Display($"Reset for {string.Join(", ", resetTarget)} in progress", PlainTextFormatter.MimeType);
await csharpKernel.SendAsync(new SubmitCode(code.ToString()));
value.Update($"Reset for {string.Join(", ", resetTarget)} done!");
}
});
csharpKernel.AddDirective(command);
var source = new CancellationTokenSource();
var robotLoop = Task.Run(() =>
{
using var operation = Log.OnEnterAndExit("roverBrainLoop");
while (!source.IsCancellationRequested)
{
if (!source.IsCancellationRequested)
{
using var __ = operation.OnEnterAndExit("Perceive");
try
{
RoverBrain.Perceive();
}
catch (Exception e)
{
__.Error(e);
}
}
if (!source.IsCancellationRequested)
{
var planResult = PlanningResult.NoPlan;
using var ___ = operation.OnEnterAndExit("Plan");
try
{
planResult = RoverBrain.Plan();
}
catch (Exception e)
{
___.Error(e);
planResult = PlanningResult.NoPlan;
}
if (!source.IsCancellationRequested && planResult != PlanningResult.NoPlan)
{
using var ____ = operation.OnEnterAndExit("Act");
RoverBrain.Act();
}
}
}
RoverBody.MotionComponent.Stop();
}, source.Token);
var reactLoop = Task.Run(() =>
{
using var operation = Log.OnEnterAndExit("roverBrainReactLoop");
while (!source.IsCancellationRequested)
{
if (!source.IsCancellationRequested)
{
using var __ = operation.OnEnterAndExit("React");
try
{
RoverBrain.React();
}
catch (Exception e)
{
__.Error(e);
}
}
}
RoverBody.MotionComponent.Stop();
}, source.Token);
csharpKernel.RegisterForDisposal(() =>
{
source.Cancel(false);
Task.WaitAll(new[] { robotLoop, reactLoop }, TimeSpan.FromSeconds(10));
RoverBody.Dispose();
});
}
private static async Task AddNamespace(CSharpKernel csharpKernel, Type type)
{
await csharpKernel.SendAsync(new SubmitCode(@$ "using {type.Namespace};"));
}