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Activate ChangeToken when Ocelot's configuration changes #1037

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* Add configuration change token (#1036)

* Add IOptionsMonitor<IInternalConfiguration>

* Activate change token from *ConfigurationRepository instead of FileAndInternalConfigurationSetter; add acceptance & integration tests

* Update documentation

* Use IWebHostEnvironment as IHostingEnvironment deprecated

Co-authored-by: Chris Swinchatt <chrisswinchatt@gmail.com>
This commit is contained in:
Tom Pallister
2020-02-04 20:50:40 +00:00
committed by GitHub
parent 473d50ff36
commit 86e8d66daf
17 changed files with 1546 additions and 1111 deletions
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35
test/Ocelot.UnitTests/Configuration/ChangeTracking/OcelotConfigurationChangeTokenSourceTests.cs Normal file
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namespace Ocelot.UnitTests.Configuration.ChangeTracking
{
using Ocelot.Configuration.ChangeTracking;
using Shouldly;
using TestStack.BDDfy;
using Xunit;
public class OcelotConfigurationChangeTokenSourceTests
{
private readonly IOcelotConfigurationChangeTokenSource _source;
public OcelotConfigurationChangeTokenSourceTests()
{
_source = new OcelotConfigurationChangeTokenSource();
}
[Fact]
public void should_activate_change_token()
{
this.Given(_ => GivenIActivateTheChangeTokenSource())
.Then(_ => ThenTheChangeTokenShouldBeActivated())
.BDDfy();
}
private void GivenIActivateTheChangeTokenSource()
{
_source.Activate();
}
private void ThenTheChangeTokenShouldBeActivated()
{
_source.ChangeToken.HasChanged.ShouldBeTrue();
}
}
}

91
test/Ocelot.UnitTests/Configuration/ChangeTracking/OcelotConfigurationChangeTokenTests.cs Normal file
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using Xunit;
namespace Ocelot.UnitTests.Configuration.ChangeTracking
{
using System;
using Shouldly;
using Ocelot.Configuration.ChangeTracking;
using TestStack.BDDfy;
public class OcelotConfigurationChangeTokenTests
{
[Fact]
public void should_call_callback_with_state()
{
this.Given(_ => GivenIHaveAChangeToken())
.And(_ => AndIRegisterACallback())
.Then(_ => ThenIShouldGetADisposableWrapper())
.Given(_ => GivenIActivateTheToken())
.Then(_ => ThenTheCallbackShouldBeCalled())
.BDDfy();
}
[Fact]
public void should_not_call_callback_if_it_is_disposed()
{
this.Given(_ => GivenIHaveAChangeToken())
.And(_ => AndIRegisterACallback())
.Then(_ => ThenIShouldGetADisposableWrapper())
.And(_ => GivenIActivateTheToken())
.And(_ => AndIDisposeTheCallbackWrapper())
.And(_ => GivenIActivateTheToken())
.Then(_ => ThenTheCallbackShouldNotBeCalled())
.BDDfy();
}
private OcelotConfigurationChangeToken _changeToken;
private IDisposable _callbackWrapper;
private int _callbackCounter;
private readonly object _callbackInitialState = new object();
private object _callbackState;
private void Callback(object state)
{
_callbackCounter++;
_callbackState = state;
_changeToken.HasChanged.ShouldBeTrue();
}
private void GivenIHaveAChangeToken()
{
_changeToken = new OcelotConfigurationChangeToken();
}
private void AndIRegisterACallback()
{
_callbackWrapper = _changeToken.RegisterChangeCallback(Callback, _callbackInitialState);
}
private void ThenIShouldGetADisposableWrapper()
{
_callbackWrapper.ShouldNotBeNull();
}
private void GivenIActivateTheToken()
{
_callbackCounter = 0;
_callbackState = null;
_changeToken.Activate();
}
private void ThenTheCallbackShouldBeCalled()
{
_callbackCounter.ShouldBe(1);
_callbackState.ShouldNotBeNull();
_callbackState.ShouldBeSameAs(_callbackInitialState);
}
private void ThenTheCallbackShouldNotBeCalled()
{
_callbackCounter.ShouldBe(0);
_callbackState.ShouldBeNull();
}
private void AndIDisposeTheCallbackWrapper()
{
_callbackState = null;
_callbackCounter = 0;
_callbackWrapper.Dispose();
}
}
}