internal async Task FetchToggles_WhenServerReturns304NotModified_ReturnsCacheHitResult(
UnleashSettings settings,
[Frozen] Mock <FakeHttpMessageHandler> httpMessageHandler,
[Frozen] UnleashApiClientRequestHeaders requestHeaders,
string etagMinusQuotes
)
{
var etag = $"\"{etagMinusQuotes}\"";
var jsonSerializerSettings = new NewtonsoftJsonSerializerSettings();
var jsonSerializer = new NewtonsoftJsonSerializer(jsonSerializerSettings);
httpMessageHandler.SetupGetFeaturesRequestForCacheHit(requestHeaders, etag);
var httpClient = new HttpClient(httpMessageHandler.Object)
{
BaseAddress = settings.UnleashApi
};
var apiClient = new UnleashApiClient(httpClient, jsonSerializer, requestHeaders);
var actualFetchTogglesResult = await apiClient.FetchToggles(etag, CancellationToken.None);
Assert.Null(actualFetchTogglesResult.ToggleCollection);
Assert.False(actualFetchTogglesResult.HasChanged);
Assert.Equal(etag, actualFetchTogglesResult.Etag);
httpMessageHandler.VerifyAll();
}
internal async Task FetchToggles_WhenHttpExceptionOccurs_ReturnsEmptyResult(
HttpStatusCode responseStatusCode,
string responseBody,
string responseContentType,
UnleashSettings settings,
[Frozen] Mock <FakeHttpMessageHandler> httpMessageHandler,
[Frozen] UnleashApiClientRequestHeaders requestHeaders,
string etag
)
{
var jsonSerializerSettings = new NewtonsoftJsonSerializerSettings();
var jsonSerializer = new NewtonsoftJsonSerializer(jsonSerializerSettings);
httpMessageHandler.SetupGetFeaturesRequestForException(requestHeaders, responseStatusCode, responseBody, responseContentType);
var httpClient = new HttpClient(httpMessageHandler.Object)
{
BaseAddress = settings.UnleashApi
};
var apiClient = new UnleashApiClient(httpClient, jsonSerializer, requestHeaders);
var actualFetchTogglesResult = await apiClient.FetchToggles(etag, CancellationToken.None);
Assert.Null(actualFetchTogglesResult.ToggleCollection);
Assert.Null(actualFetchTogglesResult.Etag);
Assert.False(actualFetchTogglesResult.HasChanged);
httpMessageHandler.VerifyAll();
}
internal async Task FetchToggles_WhenServerReturnsExpectedToggles_ReturnsValidResult(
UnleashSettings settings,
[Frozen] Mock <FakeHttpMessageHandler> httpMessageHandler,
[Frozen] UnleashApiClientRequestHeaders requestHeaders,
string etag
)
{
var jsonSerializerSettings = new NewtonsoftJsonSerializerSettings();
var jsonSerializer = new NewtonsoftJsonSerializer(jsonSerializerSettings);
var expectedToggles = new ToggleCollection();
httpMessageHandler.SetupGetFeaturesRequestForSuccess(jsonSerializer, expectedToggles, requestHeaders);
var httpClient = new HttpClient(httpMessageHandler.Object)
{
BaseAddress = settings.UnleashApi
};
var apiClient = new UnleashApiClient(httpClient, jsonSerializer, requestHeaders);
var actualFetchTogglesResult = await apiClient.FetchToggles(etag, CancellationToken.None);
var actualToggles = actualFetchTogglesResult.ToggleCollection;
Assert.Equal(expectedToggles.Features, actualToggles.Features);
Assert.True(actualFetchTogglesResult.HasChanged);
Assert.NotEqual(etag, actualFetchTogglesResult.Etag);
httpMessageHandler.VerifyAll();
}
public UnleashServices(UnleashSettings settings, Dictionary <string, IStrategy> strategyMap)
{
var fileSystem = settings.FileSystem ?? new FileSystem(settings.Encoding);
var backupFile = settings.GetFeatureToggleFilePath();
var etagBackupFile = settings.GetFeatureToggleETagFilePath();
// Cancellation
CancellationToken = cancellationTokenSource.Token;
ContextProvider = settings.UnleashContextProvider;
var loader = new CachedFilesLoader(settings.JsonSerializer, fileSystem, backupFile, etagBackupFile);
var cachedFilesResult = loader.EnsureExistsAndLoad();
ToggleCollection = new ThreadSafeToggleCollection
{
Instance = cachedFilesResult.InitialToggleCollection ?? new ToggleCollection()
};
MetricsBucket = new ThreadSafeMetricsBucket();
IUnleashApiClient apiClient;
if (settings.UnleashApiClient == null)
{
var httpClient = settings.HttpClientFactory.Create(settings.UnleashApi);
apiClient = new UnleashApiClient(httpClient, settings.JsonSerializer, new UnleashApiClientRequestHeaders()
{
AppName = settings.AppName,
InstanceTag = settings.InstanceTag,
CustomHttpHeaders = settings.CustomHttpHeaders
});
if (settings.LoadTogglesImmediately)
{
var toggles = apiClient.FetchToggles("", CancellationToken.None);
ToggleCollection.Instance = toggles.Result.ToggleCollection;
}
}
else
{
// Mocked backend: fill instance collection
apiClient = settings.UnleashApiClient;
var toggles = apiClient.FetchToggles("", CancellationToken.None);
ToggleCollection.Instance = toggles.Result.ToggleCollection;
}
scheduledTaskManager = settings.ScheduledTaskManager;
IsMetricsDisabled = settings.SendMetricsInterval == null;
var fetchFeatureTogglesTask = new FetchFeatureTogglesTask(
apiClient,
ToggleCollection,
settings.JsonSerializer,
fileSystem,
backupFile,
etagBackupFile)
{
ExecuteDuringStartup = true,
Interval = settings.FetchTogglesInterval,
Etag = cachedFilesResult.InitialETag
};
var scheduledTasks = new List <IUnleashScheduledTask>()
{
fetchFeatureTogglesTask
};
if (settings.SendMetricsInterval != null)
{
var clientRegistrationBackgroundTask = new ClientRegistrationBackgroundTask(
apiClient,
settings,
strategyMap.Select(pair => pair.Key).ToList())
{
Interval = TimeSpan.Zero,
ExecuteDuringStartup = true
};
scheduledTasks.Add(clientRegistrationBackgroundTask);
var clientMetricsBackgroundTask = new ClientMetricsBackgroundTask(
apiClient,
settings,
MetricsBucket)
{
ExecuteDuringStartup = false,
Interval = settings.SendMetricsInterval.Value
};
scheduledTasks.Add(clientMetricsBackgroundTask);
}
scheduledTaskManager.Configure(scheduledTasks, CancellationToken);
}
