private void ShouldNotOverwriteNonOptionalConfigIfDoesNotExist()
{
_source.Optional = false;
_consulConfigClientMock
.SetupSequence(ccc => ccc.GetConfig("Test", default(CancellationToken)))
.ReturnsAsync(
new QueryResult <KVPair[]>
{
Response = new[]
{
new KVPair("Test")
{
Value = new List <byte> {
1
}.ToArray()
}
},
StatusCode = HttpStatusCode.OK
})
.ReturnsAsync(new QueryResult <KVPair[]> {
StatusCode = HttpStatusCode.NotFound
});
_configParserMock
.Setup(cp => cp.Parse(It.IsAny <MemoryStream>()))
.Returns(new Dictionary <string, string> {
{ "Key", "Test" }
});
_consulConfigProvider.Load();
_firstChangeToken.OnReload();
_consulConfigProvider.TryGet("Key", out string _).Should().BeTrue();
}
private async Task PollForChanges(
string key,
Action <ConsulWatchExceptionContext> onException,
CancellationToken cancellationToken)
{
while (!cancellationToken.IsCancellationRequested)
{
try
{
if (await HasValueChanged(key, cancellationToken).ConfigureAwait(false))
{
ConfigurationReloadToken previousToken = Interlocked.Exchange(
ref _reloadToken,
new ConfigurationReloadToken());
previousToken.OnReload();
return;
}
}
catch (Exception exception)
{
var exceptionContext = new ConsulWatchExceptionContext(cancellationToken, exception);
onException?.Invoke(exceptionContext);
}
}
}
protected void OnReload()
{
ConfigurationReloadToken previousToken =
Interlocked.Exchange(ref _reloadToken, new ConfigurationReloadToken());
previousToken.OnReload();
}
private async Task PollForChanges(
string key,
Func <ConsulWatchExceptionContext, TimeSpan> onException,
CancellationToken cancellationToken)
{
var consecutiveFailureCount = 0;
while (!cancellationToken.IsCancellationRequested)
{
try
{
if (await HasValueChanged(key, cancellationToken).ConfigureAwait(false))
{
ConfigurationReloadToken previousToken = Interlocked.Exchange(
ref _reloadToken,
new ConfigurationReloadToken());
previousToken.OnReload();
return;
}
consecutiveFailureCount = 0;
}
catch (Exception exception)
{
TimeSpan wait =
onException?.Invoke(
new ConsulWatchExceptionContext(cancellationToken, exception, ++consecutiveFailureCount)) ??
TimeSpan.FromSeconds(5);
await Task.Delay(wait, cancellationToken);
}
}
}
private void HandleConfigurationChange(IConfiguration configuration)
{
Set(configuration);
configuration.GetReloadToken().RegisterChangeCallback(_ => {
HandleConfigurationChange(configuration);
}, null);
_changeToken.OnReload();
_changeToken = new ConfigurationReloadToken();
}
private async Task RefreshForChanges(string key, CancellationToken cancellationToken)
{
while (!cancellationToken.IsCancellationRequested)
{
if (await this.IsValueChanged(key, cancellationToken).ConfigureAwait(false))
{
ConfigurationReloadToken previousToken = Interlocked.Exchange(ref this.reloadToken, new ConfigurationReloadToken());
previousToken.OnReload();
return;
}
}
}
public void IChangeToken_ConfigurationReloadToken_CallCancleAgain()
{
var token = new ConfigurationReloadToken();
var isCallbackInvoked = false;
token.RegisterChangeCallback(o => isCallbackInvoked = true, null);
token.OnReload();
Wait();
Assert.True(isCallbackInvoked);
Assert.True(token.HasChanged);
isCallbackInvoked = false;
var isCallbackInvokedAgain = false;
token.RegisterChangeCallback(o => isCallbackInvokedAgain = true, null);
Assert.True(token.HasChanged);
Wait();
token.OnReload();
// 还是会调用第二次
Assert.True(isCallbackInvokedAgain);
// 新注册的回调还是会调用的
Assert.True(isCallbackInvokedAgain);
}
private void OnConfigurationReload(object obj)
{
// Configuration changed;
_changeToken.OnReload();
}
private void RaiseChanged()
{
ConfigurationReloadToken previousToken = Interlocked.Exchange(ref _changeToken, new ConfigurationReloadToken());
previousToken.OnReload();
}