public void MultipleProcessesCanWriteToTheLog()
{
var logFile = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
TimestampedFileLogger logger = new(logFile);
// Log requests operates using PipeTransmissionMode.Message
NamedPipeServerStream np1 = CreateServerPipe("np1");
PipeStreamSetupLogger pssl1 = new PipeStreamSetupLogger(np1, "np1");
NamedPipeServerStream np2 = CreateServerPipe("np2");
PipeStreamSetupLogger pssl2 = new PipeStreamSetupLogger(np2, "np2");
logger.AddNamedPipe("np1");
logger.AddNamedPipe("np2");
logger.LogMessage("Foo");
var t1 = Task.Run(() => { pssl1.Connect(); pssl1.LogMessage("Hello from np1"); });
var t2 = Task.Run(() => { pssl2.Connect(); pssl2.LogMessage("Hello from np2"); });
// Give the other threads time to connect to the logging thread.
Task.WaitAll(t1, t2);
logger.Dispose();
string logContent = File.ReadAllText(logFile);
Assert.Contains("Hello from np1", logContent);
Assert.Contains("Hello from np2", logContent);
}
private void LogTask(string pipeName)
{
using NamedPipeServerStream serverPipe = CreateServerPipe(pipeName);
PipeStreamSetupLogger logger = new PipeStreamSetupLogger(serverPipe, pipeName);
logger.Connect();
for (int i = 0; i < 10; i++)
{
logger.LogMessage($"Hello from {pipeName} ({i}).");
}
}
public NetSdkMsiInstallerServer(InstallElevationContextBase elevationContext, PipeStreamSetupLogger logger)
: base(elevationContext, logger)
{
// Establish a connection with the install client and logger. We're relying on tasks to handle
// this, otherwise, the ordering needs to be lined up with how the client configures
// the underlying pipe streams to avoid deadlock.
Task dispatchTask = new Task(() => Dispatcher.Connect());
Task loggerTask = new Task(() => logger.Connect());
dispatchTask.Start();
loggerTask.Start();
Task.WaitAll(dispatchTask, loggerTask);
}