public void WithCallTiming_NullSettings()
{
CallSettings noSettings = null;
Assert.Null(noSettings.WithCallTiming(null));
CallTiming timing = CallTiming.FromExpiration(Expiration.None);
var result = noSettings.WithCallTiming(timing);
Assert.Same(timing, result.Timing);
}
/// <summary>
/// Updates the call settings with configuration parameters.
/// </summary>
/// <param name="callSettings">The call settings.</param>
/// <param name="config">The configuration.</param>
/// <param name="serviceContext">The service context.</param>
/// <returns></returns>
private CallSettings UpdateCallSettingsWithConfigParameters(CallSettings callSettings,
GoogleAdsConfig config, GoogleAdsServiceContext serviceContext)
{
callSettings = callSettings.WithHeader(GoogleAdsConfig.DEVELOPER_TOKEN_KEYNAME,
config.DeveloperToken)
.WithResponseMetadataHandler(delegate(Metadata metadata)
{
GoogleAdsResponseMetadata responseMetadata =
new GoogleAdsResponseMetadata(metadata);
serviceContext.OnResponseMetadataReceived(responseMetadata);
});
if (!string.IsNullOrEmpty(config.LoginCustomerId))
{
callSettings = callSettings.WithHeader(GoogleAdsConfig.LOGIN_CUSTOMER_ID_KEYNAME,
config.LoginCustomerId);
}
if (!string.IsNullOrEmpty(config.LibraryIdentifierOverride))
{
callSettings = callSettings.WithHeader(GoogleAdsConfig.LIBRARY_IDENTIFIER_KEYNAME,
config.LibraryIdentifierOverride);
}
callSettings = callSettings.WithCallTiming(CallTiming.FromTimeout(
TimeSpan.FromMilliseconds(config.Timeout)));
return(callSettings);
}
/// <summary>
/// Asynchronously polls the operation until it is complete, returning the completed operation.
/// </summary>
/// <remarks>
/// <para>
/// If this object already represents a completed operation, it is returned with no further RPCs.
/// If <paramref name="metadataCallback"/> is non-null, the callback will be called with any metadata
/// present before the result is returned.
/// </para>
/// <para>
/// No guarantee is made as to which thread is used for metadata callbacks. However, each callback is
/// performed synchronously: this method waits for the callback to complete before the operation is next polled.
/// This guarantees that for a single call, metadata callbacks will never occur in parallel.
/// </para>
/// </remarks>
/// <param name="pollSettings">The settings to use for repeated polling, or null
/// to use the default poll settings (poll once every 10 seconds, forever).</param>
/// <param name="callSettings">The call settings to apply on each call, or null for default settings.</param>
/// <param name="metadataCallback">The callback to invoke with the metadata from each poll operation, even if the metadata is null.</param>
/// <returns>The completed operation, which can then be checked for errors or a result.</returns>
public Task <Operation <TResponse, TMetadata> > PollUntilCompletedAsync(
PollSettings pollSettings = null,
CallSettings callSettings = null,
Action <TMetadata> metadataCallback = null)
{
if (IsCompleted)
{
metadataCallback?.Invoke(Metadata);
return(Task.FromResult(this));
}
// We need to work out the effective timing so that we can truncate any deadline, but anything else
// that's in the effective call settings can be left to the normal merging process. In particular,
// we don't want to include the header mutation that adds the version header, as otherwise we'll end up
// including it twice.
var effectiveTiming = Client.GetEffectiveCallSettingsForGetOperation(callSettings)?.Timing;
callSettings = callSettings.WithCallTiming(effectiveTiming);
Func <DateTime?, Task <Operation <TResponse, TMetadata> > > pollAction =
async deadline =>
{
var result = await PollOnceAsync(callSettings.WithEarlierDeadline(deadline, Client.Clock)).ConfigureAwait(false);
metadataCallback?.Invoke(result.Metadata);
return(result);
};
return(Polling.PollRepeatedlyAsync(
pollAction, o => o.IsCompleted,
Client.Clock, Client.Scheduler, pollSettings ?? Client.DefaultPollSettings ?? s_defaultPollSettings,
callSettings?.CancellationToken ?? CancellationToken.None));
}
public void WithCallTiming_NullTiming()
{
CallTiming timing = CallTiming.FromExpiration(Expiration.None);
CancellationToken token = new CancellationTokenSource().Token;
var original = new CallSettings(token, null, timing, null, null, null);
var result = original.WithCallTiming(null);
Assert.Null(result.Timing);
Assert.Equal(token, result.CancellationToken);
}
public void WithCallTiming_NonNull()
{
CallTiming timing1 = CallTiming.FromExpiration(Expiration.None);
CallTiming timing2 = CallTiming.FromDeadline(DateTime.UtcNow);
CancellationToken token = new CancellationTokenSource().Token;
var original = new CallSettings(token, null, timing1, null, null, null);
var result = original.WithCallTiming(timing2);
Assert.Same(timing2, result.Timing);
Assert.Equal(token, result.CancellationToken);
}
public void WithCallTiming_NonNull()
{
CallTiming timing1 = CallTiming.FromExpiration(Expiration.None);
CallTiming timing2 = CallTiming.FromDeadline(DateTime.UtcNow);
CancellationToken token = new CancellationTokenSource().Token;
var original = new CallSettings(token, null, timing1, null, null, null);
var result = original.WithCallTiming(timing2);
Assert.Same(timing2, result.Timing);
Assert.Equal(token, result.CancellationToken);
}
// TODO: This is a modified/simplified version of ApiCallRetryExtensions.WithRetry from Google.Api.Gax.Grpc. Can we combine them somehow?
internal static async Task RetryOperationUntilCompleted(
Func <Task <bool> > fn,
IClock clock,
IScheduler scheduler,
CallSettings callSettings,
RetrySettings retrySettings)
{
DateTime?overallDeadline = retrySettings.TotalExpiration.CalculateDeadline(clock);
TimeSpan retryDelay = retrySettings.RetryBackoff.Delay;
TimeSpan callTimeout = retrySettings.TimeoutBackoff.Delay;
while (true)
{
DateTime attemptDeadline = clock.GetCurrentDateTimeUtc() + callTimeout;
// Note: this handles a null total deadline due to "<" returning false if overallDeadline is null.
DateTime combinedDeadline = overallDeadline < attemptDeadline ? overallDeadline.Value : attemptDeadline;
CallSettings attemptCallSettings = callSettings.WithCallTiming(CallTiming.FromDeadline(combinedDeadline));
TimeSpan actualDelay = retrySettings.DelayJitter.GetDelay(retryDelay);
DateTime expectedRetryTime;
try
{
bool isResponseOk = await fn().ConfigureAwait(false);
if (isResponseOk)
{
return;
}
expectedRetryTime = clock.GetCurrentDateTimeUtc() + actualDelay;
if (expectedRetryTime > overallDeadline)
{
// TODO: Can we get this string from somewhere?
throw new RpcException(new Status(StatusCode.DeadlineExceeded, "Deadline Exceeded"));
}
}
catch (RpcException e) when(retrySettings.RetryFilter(e))
{
expectedRetryTime = clock.GetCurrentDateTimeUtc() + actualDelay;
if (expectedRetryTime > overallDeadline)
{
throw;
}
}
await scheduler.Delay(actualDelay, callSettings.CancellationToken.GetValueOrDefault()).ConfigureAwait(false);
retryDelay = retrySettings.RetryBackoff.NextDelay(retryDelay);
callTimeout = retrySettings.TimeoutBackoff.NextDelay(callTimeout);
}
}
internal static async Task <TResponse> Retry <TRequest, TResponse>(
Func <TRequest, CallSettings, Task <TResponse> > fn,
TRequest request, CallSettings callSettings, IClock clock, IScheduler scheduler)
{
RetrySettings retrySettings = callSettings.Timing?.Retry;
if (retrySettings == null)
{
return(await fn(request, callSettings).ConfigureAwait(false));
}
DateTime?overallDeadline = retrySettings.TotalExpiration.CalculateDeadline(clock);
TimeSpan retryDelay = retrySettings.RetryBackoff.Delay;
TimeSpan callTimeout = retrySettings.TimeoutBackoff.Delay;
while (true)
{
DateTime attemptDeadline = clock.GetCurrentDateTimeUtc() + callTimeout;
// Note: this handles a null total deadline due to "<" returning false if overallDeadline is null.
DateTime combinedDeadline = overallDeadline < attemptDeadline ? overallDeadline.Value : attemptDeadline;
CallSettings attemptCallSettings = callSettings.WithCallTiming(CallTiming.FromDeadline(combinedDeadline));
try
{
return(await fn(request, attemptCallSettings).ConfigureAwait(false));
}
catch (RpcException e) when(retrySettings.RetryFilter(e))
{
TimeSpan actualDelay = retrySettings.DelayJitter.GetDelay(retryDelay);
DateTime expectedRetryTime = clock.GetCurrentDateTimeUtc() + actualDelay;
if (expectedRetryTime > overallDeadline)
{
throw;
}
await scheduler.Delay(actualDelay, callSettings.CancellationToken.GetValueOrDefault()).ConfigureAwait(false);
retryDelay = retrySettings.RetryBackoff.NextDelay(retryDelay);
callTimeout = retrySettings.TimeoutBackoff.NextDelay(callTimeout);
}
}
}
public void WithCallTiming_NullTiming()
{
CallTiming timing = CallTiming.FromExpiration(Expiration.None);
CancellationToken token = new CancellationTokenSource().Token;
var original = new CallSettings(token, null, timing, null, null, null);
var result = original.WithCallTiming(null);
Assert.Null(result.Timing);
Assert.Equal(token, result.CancellationToken);
}