Im5tu

name: 0.1$(Rev:.r)
queue: Hosted VS2017
variables:
  buildConfiguration: 'Release'
  buildProjects: '**/*.csproj'
  packageProjects: '**/*.sfproj'
  testProjects: '**/*Tests*.csproj'
  dotnetCliVersion: '2.1.300'
steps:
# Restore the packages for all projects in the 'buildProjects' variable

Im5tu

name: 0.1.0
trigger:
  branches:
    include:
    - master
    - hotfix/*
    - release/*
    - feature/*
    - bugfix/*
    - backlog/*

Im5tu

class Program
{
    static void Main(string[] args)
    {
        using(CorrelationContext.CreateCorrelationIfNotExists())
        {
            Console.WriteLine(CorrelationContext.GetCorrelationId());

            using(CorrelationContext.CreateCorrelationIfNotExists())
            {

Im5tu

private class DisposeCorrelation : IDisposable
{
    private readonly AsyncLocal<Stack<Guid>> _localStack;

    public DisposeCorrelation(AsyncLocal<Stack<Guid>> localStack)
    {
        _localStack = localStack;
    }
    public void Dispose()
    {

Im5tu

public static IDisposable CreateCorrelationIfNotExists(Guid? correlationId = null)
{
    if(GetCorrelationStack().Count > 0)
        return new EmptyDisposable();

    return CreateCorrelation(correlationId);
}

Im5tu

public static IDisposable CreateCorrelation(Guid? correlationId = null)
{
    if (_correlationStack.Value == null)
        _correlationStack.Value = new Stack<Guid>();
 
    _correlationStack.Value.Push(correlationId ?? Guid.NewGuid());
    
    return new DisposeCorrelation(_correlationStack);
}

Im5tu

public static Guid? GetCorrelationId() 
{
    var stack = GetCorrelationStack();
    if(stack.Count > 0)
        return stack.Peek();

    return null; // TODO :: decide what you are going to do
} 

Im5tu

private static readonly AsyncLocal<Stack<Guid>> _correlationStack = new AsyncLocal<Stack<Guid>>();
public static Stack<Guid> GetCorrelationStack() => _correlationStack.Value ?? new Stack<Guid>();

Im5tu

public static class CorrelationContext
{
    public static Stack<Guid> GetCorrelationStack() {}
    public static Guid? GetCorrelationId() {}
    public static IDisposable CreateCorrelation(Guid? correlationId = null) {}
    public static IDisposable CreateCorrelationIfNotExists(Guid? correlationId = null) {}
}

Im5tu

public static class CorrelationContext
{
    public static Stack<Guid> GetCorrelationStack() {}
    public static Guid? GetCorrelationId() {}
    public static IDisposable CreateCorrelation(Guid? correlationId = null) {}
    public static IDisposable CreateCorrelationIfNotExists(Guid? correlationId = null) {}
}