protected override Task ExecuteAsync(CancellationToken stoppingToken)
{
return(Task.Run(async() =>
{
while (!stoppingToken.IsCancellationRequested)
{
stoppingToken.ThrowIfCancellationRequested();
try
{
//TODO In multi-process scenarios, how do we decide which process to choose?
//One possibility is to enable metrics after a request to begin polling for metrics
IProcessInfo pi = await _services.GetProcessAsync(filter: null, stoppingToken);
await _pipeProcessor.Process(pi.Client, pi.Pid, Timeout.InfiniteTimeSpan, stoppingToken);
}
catch (Exception e) when(!(e is OperationCanceledException))
{
//Most likely we failed to resolve the pid. Attempt to do this again.
await Task.Delay(5000);
}
}
}, stoppingToken));
}
public async Task TestDiagnosticsEventPipeProcessorLogs()
{
var outputStream = new MemoryStream();
await using (var testExecution = RemoteTestExecution.StartRemoteProcess("LoggerRemoteTest", _output))
{
//TestRunner should account for start delay to make sure that the diagnostic pipe is available.
var loggerFactory = new LoggerFactory(new[] { new StreamingLoggerProvider(outputStream, LogFormat.Json) });
DiagnosticsEventPipeProcessor diagnosticsEventPipeProcessor = new DiagnosticsEventPipeProcessor(
PipeMode.Logs,
loggerFactory,
Enumerable.Empty <IMetricsLogger>());
var processingTask = diagnosticsEventPipeProcessor.Process(testExecution.TestRunner.Pid, TimeSpan.FromSeconds(10), CancellationToken.None);
//Add a small delay to make sure diagnostic processor had a chance to initialize
await Task.Delay(1000);
//Send signal to proceed with event collection
testExecution.Start();
await processingTask;
await diagnosticsEventPipeProcessor.DisposeAsync();
loggerFactory.Dispose();
}
outputStream.Position = 0L;
Assert.True(outputStream.Length > 0, "No data written by logging process.");
using var reader = new StreamReader(outputStream);
string firstMessage = reader.ReadLine();
Assert.NotNull(firstMessage);
LoggerTestResult result = JsonSerializer.Deserialize <LoggerTestResult>(firstMessage);
Assert.Equal("Some warning message with 6", result.Message);
Assert.Equal("LoggerRemoteTest", result.Category);
Assert.Equal("Warning", result.LogLevel);
Assert.Equal("0", result.EventId);
Validate(result.Scopes, ("BoolValue", "true"), ("StringValue", "test"), ("IntValue", "5"));
Validate(result.Arguments, ("arg", "6"));
string secondMessage = reader.ReadLine();
Assert.NotNull(secondMessage);
result = JsonSerializer.Deserialize <LoggerTestResult>(secondMessage);
Assert.Equal("Another message", result.Message);
Assert.Equal("LoggerRemoteTest", result.Category);
Assert.Equal("Warning", result.LogLevel);
Assert.Equal("0", result.EventId);
Assert.Equal(0, result.Scopes.Count);
//We are expecting only the original format
Assert.Equal(1, result.Arguments.Count);
}
public async Task TestDiagnosticsEventPipeProcessorLogs()
{
var outputStream = new MemoryStream();
using (var testExecution = RemoteTest.StartRemoteProcess(LoggerRemoteTest.EntryPoint, nameof(LoggerRemoteTest), _output))
{
_output.WriteLine($"Started remote execution {testExecution.RemoteProcess.Process.ProcessName} {testExecution.RemoteProcess.Process.Id}");
//Add a small delay to make sure the remote process had a chance to start and create the diagnostic pipe.
await Task.Delay(1000);
var loggerFactory = new LoggerFactory(new[] { new StreamingLoggerProvider(outputStream) });
DiagnosticsEventPipeProcessor diagnosticsEventPipeProcessor = new DiagnosticsEventPipeProcessor(
ContextConfiguration,
PipeMode.Logs,
loggerFactory,
Enumerable.Empty <IMetricsLogger>());
var processingTask = diagnosticsEventPipeProcessor.Process(testExecution.RemoteProcess.Process.Id, TimeSpan.FromSeconds(10), CancellationToken.None);
//Add a small delay to make sure diagnostic processor had a chance to initialize
await Task.Delay(1000);
testExecution.Start();
await processingTask;
await diagnosticsEventPipeProcessor.DisposeAsync();
loggerFactory.Dispose();
}
outputStream.Position = 0L;
Assert.True(outputStream.Length > 0, "No data written by logging process.");
using var reader = new StreamReader(outputStream);
string firstMessage = reader.ReadLine();
Assert.NotNull(firstMessage);
LoggerTestResult result = JsonSerializer.Deserialize <LoggerTestResult>(firstMessage);
Assert.Equal("Some warning message with 6", result.Message);
Assert.Equal(nameof(LoggerRemoteTest), result.Category);
Assert.Equal("Warning", result.LogLevel);
Assert.Equal("0", result.EventId);
Validate(result.Scopes, ("BoolValue", "true"), ("StringValue", "test"), ("IntValue", "5"));
Validate(result.Arguments, ("arg", "6"));
string secondMessage = reader.ReadLine();
Assert.NotNull(secondMessage);
result = JsonSerializer.Deserialize <LoggerTestResult>(secondMessage);
Assert.Equal("Another message", result.Message);
Assert.Equal(nameof(LoggerRemoteTest), result.Category);
Assert.Equal("Warning", result.LogLevel);
Assert.Equal("0", result.EventId);
Assert.Equal(0, result.Scopes.Count);
//We are expecting only the original format
Assert.Equal(1, result.Arguments.Count);
}