| #region Copyright notice and license |
| |
| // Copyright 2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #endregion |
| |
| using System; |
| using System.Collections.Generic; |
| using System.Threading; |
| using System.Threading.Tasks; |
| using Grpc.Core; |
| using Grpc.Core.Utils; |
| |
| namespace Math |
| { |
| /// <summary> |
| /// Implementation of MathService server |
| /// </summary> |
| public class MathServiceImpl : Math.MathBase |
| { |
| public override Task<DivReply> Div(DivArgs request, ServerCallContext context) |
| { |
| return Task.FromResult(DivInternal(request)); |
| } |
| |
| public override async Task Fib(FibArgs request, IServerStreamWriter<Num> responseStream, ServerCallContext context) |
| { |
| if (request.Limit <= 0) |
| { |
| // keep streaming the sequence until cancelled. |
| IEnumerator<Num> fibEnumerator = FibInternal(long.MaxValue).GetEnumerator(); |
| while (!context.CancellationToken.IsCancellationRequested && fibEnumerator.MoveNext()) |
| { |
| await responseStream.WriteAsync(fibEnumerator.Current); |
| await Task.Delay(100); |
| } |
| } |
| |
| if (request.Limit > 0) |
| { |
| foreach (var num in FibInternal(request.Limit)) |
| { |
| await responseStream.WriteAsync(num); |
| } |
| } |
| } |
| |
| public override async Task<Num> Sum(IAsyncStreamReader<Num> requestStream, ServerCallContext context) |
| { |
| long sum = 0; |
| await requestStream.ForEachAsync(async num => |
| { |
| sum += num.Num_; |
| }); |
| return new Num { Num_ = sum }; |
| } |
| |
| public override async Task DivMany(IAsyncStreamReader<DivArgs> requestStream, IServerStreamWriter<DivReply> responseStream, ServerCallContext context) |
| { |
| await requestStream.ForEachAsync(async divArgs => await responseStream.WriteAsync(DivInternal(divArgs))); |
| } |
| |
| static DivReply DivInternal(DivArgs args) |
| { |
| long quotient = args.Dividend / args.Divisor; |
| long remainder = args.Dividend % args.Divisor; |
| return new DivReply { Quotient = quotient, Remainder = remainder }; |
| } |
| |
| static IEnumerable<Num> FibInternal(long n) |
| { |
| long a = 1; |
| yield return new Num { Num_ = a }; |
| |
| long b = 1; |
| for (long i = 0; i < n - 1; i++) |
| { |
| long temp = a; |
| a = b; |
| b = temp + b; |
| yield return new Num { Num_ = a }; |
| } |
| } |
| } |
| } |