public override Task LegacyQuery(
LegacyQueryRequest request,
IServerStreamWriter <LegacyQueryResponse> responseStream,
ServerCallContext context)
{
if (TryGetRetryAttempts(context, out int attempts) && attempts > 1)
{
this.SetResponseHeader(context.ResponseTrailers);
byte[] bytes = new byte[] { 88, 99 };
return(responseStream.WriteAsync(new LegacyQueryResponse()));
}
else
{
throw new RpcException(new Status(StatusCode.Unavailable, "Failing the request to test retry."), "failed for retry");
}
}
public async Task TestsRetry()
{
ChannelOption[] channelOptions = new ChannelOption[]
{
new ChannelOption(
"grpc.service_config",
"{\"methodConfig\":[{\"name\":[{\"service\":\"Contoso.Grpc.LegacyQuery\",\"method\":\"LegacyQuery\"}],\"retryPolicy\":{\"maxAttempts\":3,\"initialBackoff\":\"0.5s\",\"maxBackoff\":\"5s\",\"backoffMultiplier\":2.0,\"retryableStatusCodes\":[\"UNAVAILABLE\"]}}]}")
};
Channel channel = new Channel($"{LocalHost}:{Port}", ChannelCredentials.Insecure, channelOptions);
//Channel channel = new Channel($"{LocalHost}:{Port}", ChannelCredentials.Insecure);
var client = new LegacyQuery.LegacyQueryClient(channel);
byte[] bytes = new byte[] { 55, 66 };
LegacyQueryRequest legacyQueryRequest = new LegacyQueryRequest()
{
LegacyAqm = ByteString.CopyFrom(bytes)
};
LegacyQueryResponse response = null;
try
{
var call = client.LegacyQuery(legacyQueryRequest);
while (await call.ResponseStream.MoveNext().ConfigureAwait(false))
{
response = call.ResponseStream.Current;
}
Assert.IsNotNull(response);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
throw;
}
#pragma warning disable CS1058 // A previous catch clause already catches all exceptions
catch
#pragma warning restore CS1058 // A previous catch clause already catches all exceptions
{
// Remove the same permission as above.
Console.WriteLine("Non-CLS compliant exception caught.");
}
}
public override async Task LegacyQuery(
LegacyQueryRequest request,
IServerStreamWriter <LegacyQueryResponse> responseStream,
ServerCallContext context)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
int requestSize = request.CalculateSize();
context.UserState.Add(RequestSizeKey, requestSize);
await this.legacyQueryHandler.LegacyQuery(request, responseStream, context)
.ConfigureAwait(false);
}
/// <summary>
/// Abstract method for LegecyQuery gRpc request handling.
/// </summary>
/// <param name="request">The bytes from the LegacyQuery request.</param>
/// <param name="responseStream">The stream writer to be used to write response stream to.</param>
/// <param name="context">The gRpc service call context.</param>
/// <returns>The task instance.</returns>
public abstract Task LegacyQuery(
LegacyQueryRequest request,
IServerStreamWriter <LegacyQueryResponse> responseStream,
ServerCallContext context);
