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Code Issues 32 Packages Projects Releases 10 Wiki Activity

Implement Random Delay (#633)

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* implement random delays

* fixing CodeFactor issue

* fix code comments

* ...

* UT

Co-authored-by: Michael Yarichuk <michael.yarichuk@gmail.com>
This commit is contained in:
Stef Heyenrath
2021-09-22 13:37:41 +02:00
committed by GitHub
parent c67bf75a4b
commit ba0b9d9fd8
7 changed files with 169 additions and 11 deletions
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10
src/WireMock.Net.Abstractions/Admin/Mappings/ResponseModel.cs
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@@ -83,6 +83,16 @@ namespace WireMock.Admin.Mappings
/// </summary>
public int? Delay { get; set; }
/// <summary>
/// Gets or sets the minimum random delay in milliseconds.
/// </summary>
public int? MinimumRandomDelay { get; set; }
/// <summary>
/// Gets or sets the maximum random delay in milliseconds.
/// </summary>
public int? MaximumRandomDelay { get; set; }
/// <summary>
/// Gets or sets the Proxy URL.
/// </summary>

8
src/WireMock.Net/ResponseBuilders/IDelayResponseBuilder.cs
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@@ -20,5 +20,13 @@ namespace WireMock.ResponseBuilders
/// <param name="milliseconds">The milliseconds to delay.</param>
/// <returns>The <see cref="IResponseBuilder"/>.</returns>
IResponseBuilder WithDelay(int milliseconds);
/// <summary>
/// Introduce random delay
/// </summary>
/// <param name="minimumMilliseconds">Minimum milliseconds to delay</param>
/// <param name="maximumMilliseconds">Maximum milliseconds to delay</param>
/// <returns>The <see cref="IResponseBuilder"/>.</returns>
IResponseBuilder WithRandomDelay(int minimumMilliseconds = 0, int maximumMilliseconds = 60_000);
}
}

45
src/WireMock.Net/ResponseBuilders/Response.cs
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@@ -5,6 +5,7 @@ using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using JetBrains.Annotations;
using WireMock.Proxy;
@@ -24,10 +25,40 @@ namespace WireMock.ResponseBuilders
/// </summary>
public partial class Response : IResponseBuilder
{
private static readonly ThreadLocal<Random> Random = new ThreadLocal<Random>(() => new Random(DateTime.UtcNow.Millisecond));
private TimeSpan? _delay;
/// <summary>
/// The minimum random delay in milliseconds.
/// </summary>
public int? MinimumDelayMilliseconds { get; private set; }
/// <summary>
/// The maximum random delay in milliseconds.
/// </summary>
public int? MaximumDelayMilliseconds { get; private set; }
/// <summary>
/// The delay
/// </summary>
public TimeSpan? Delay { get; private set; }
public TimeSpan? Delay
{
get
{
if (MinimumDelayMilliseconds != null && MaximumDelayMilliseconds != null)
{
return TimeSpan.FromMilliseconds(Random.Value.Next(MinimumDelayMilliseconds.Value, MaximumDelayMilliseconds.Value));
}
return _delay;
}
private set
{
_delay = value;
}
}
/// <summary>
/// Gets a value indicating whether [use transformer].
@@ -334,6 +365,18 @@ namespace WireMock.ResponseBuilders
return WithDelay(TimeSpan.FromMilliseconds(milliseconds));
}
/// <inheritdoc cref="IDelayResponseBuilder.WithRandomDelay(int, int)"/>
public IResponseBuilder WithRandomDelay(int minimumMilliseconds = 0, int maximumMilliseconds = 60_000)
{
Check.Condition(minimumMilliseconds, min => min >= 0, nameof(minimumMilliseconds));
Check.Condition(maximumMilliseconds, max => max > minimumMilliseconds, nameof(maximumMilliseconds));
MinimumDelayMilliseconds = minimumMilliseconds;
MaximumDelayMilliseconds = maximumMilliseconds;
return this;
}
/// <inheritdoc cref="IResponseProvider.ProvideResponseAsync(RequestMessage, IWireMockServerSettings)"/>
public async Task<(ResponseMessage Message, IMapping Mapping)> ProvideResponseAsync(RequestMessage requestMessage, IWireMockServerSettings settings)
{

23
src/WireMock.Net/Serialization/MappingConverter.cs
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@@ -1,4 +1,5 @@
using System.Collections.Generic;
using System;
using System.Collections.Generic;
using System.Linq;
using WireMock.Admin.Mappings;
using WireMock.Matchers.Request;
@@ -6,7 +7,6 @@ using WireMock.RequestBuilders;
using WireMock.ResponseBuilders;
using WireMock.Settings;
using WireMock.Types;
using WireMock.Validation;
namespace WireMock.Serialization
{
@@ -16,9 +16,7 @@ namespace WireMock.Serialization
public MappingConverter(MatcherMapper mapper)
{
Check.NotNull(mapper, nameof(mapper));
_mapper = mapper;
_mapper = mapper ?? throw new ArgumentNullException(nameof(mapper));
}
public MappingModel ToMappingModel(IMapping mapping)
@@ -81,12 +79,19 @@ namespace WireMock.Serialization
Matchers = _mapper.Map(pm.Matchers)
}).ToList() : null
},
Response = new ResponseModel
{
Delay = (int?)response.Delay?.TotalMilliseconds
}
Response = new ResponseModel()
};
if (response.MinimumDelayMilliseconds >= 0 || response.MaximumDelayMilliseconds > 0)
{
mappingModel.Response.MinimumRandomDelay = response.MinimumDelayMilliseconds;
mappingModel.Response.MaximumRandomDelay = response.MaximumDelayMilliseconds;
}
else
{
mappingModel.Response.Delay = (int?)response.Delay?.TotalMilliseconds;
}
if (mapping.Webhooks?.Length == 1)
{
mappingModel.Webhook = WebhookMapper.Map(mapping.Webhooks[0]);

4
src/WireMock.Net/Server/WireMockServer.Admin.cs
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@@ -782,6 +782,10 @@ namespace WireMock.Server
{
responseBuilder = responseBuilder.WithDelay(responseModel.Delay.Value);
}
else if (responseModel.MinimumRandomDelay >= 0 || responseModel.MaximumRandomDelay > 0)
{
responseBuilder = responseBuilder.WithRandomDelay(responseModel.MinimumRandomDelay ?? 0, responseModel.MaximumRandomDelay ?? 60_000);
}
if (responseModel.UseTransformer == true)
{

58
test/WireMock.Net.Tests/Serialization/MappingConverterTests.cs
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@@ -1,4 +1,4 @@
using System;
using System;
using System.Collections.Generic;
using FluentAssertions;
using WireMock.Models;
@@ -163,5 +163,61 @@ namespace WireMock.Net.Tests.Serialization
model.Priority.Should().Be(42);
model.Response.UseTransformer.Should().BeTrue();
}
[Fact]
public void ToMappingModel_WithDelay_ReturnsCorrectModel()
{
// Assign
int delay = 1000;
var request = Request.Create();
var response = Response.Create().WithDelay(delay);
var mapping = new Mapping(Guid.NewGuid(), "", null, _settings, request, response, 42, null, null, null, null, null);
// Act
var model = _sut.ToMappingModel(mapping);
// Assert
model.Should().NotBeNull();
model.Response.Delay.Should().Be(delay);
}
[Fact]
public void ToMappingModel_WithRandomMininumDelay_ReturnsCorrectModel()
{
// Assign
int minimumDelay = 1000;
var request = Request.Create();
var response = Response.Create().WithRandomDelay(minimumDelay);
var mapping = new Mapping(Guid.NewGuid(), "", null, _settings, request, response, 42, null, null, null, null, null);
// Act
var model = _sut.ToMappingModel(mapping);
// Assert
model.Should().NotBeNull();
model.Response.Delay.Should().BeNull();
model.Response.MinimumRandomDelay.Should().Be(minimumDelay);
model.Response.MaximumRandomDelay.Should().Be(60_000);
}
[Fact]
public void ToMappingModel_WithRandomDelay_ReturnsCorrectModel()
{
// Assign
int minimumDelay = 1000;
int maximumDelay = 2000;
var request = Request.Create();
var response = Response.Create().WithRandomDelay(minimumDelay, maximumDelay);
var mapping = new Mapping(Guid.NewGuid(), "", null, _settings, request, response, 42, null, null, null, null, null);
// Act
var model = _sut.ToMappingModel(mapping);
// Assert
model.Should().NotBeNull();
model.Response.Delay.Should().BeNull();
model.Response.MinimumRandomDelay.Should().Be(minimumDelay);
model.Response.MaximumRandomDelay.Should().Be(maximumDelay);
}
}
}

32
test/WireMock.Net.Tests/WireMockServerTests.cs
View File

@@ -115,6 +115,38 @@ namespace WireMock.Net.Tests
server.Stop();
}
[Fact]
public async Task WireMockServer_Should_randomly_delay_responses_for_a_given_route()
{
// Arrange
var server = WireMockServer.Start();
server
.Given(Request.Create()
.WithPath("/*"))
.RespondWith(Response.Create()
.WithBody(@"{ msg: ""Hello world!""}")
.WithRandomDelay(10, 1000));
var watch = new Stopwatch();
watch.Start();
var httClient = new HttpClient();
async Task<long> ExecuteTimedRequestAsync()
{
watch.Reset();
await httClient.GetStringAsync("http://localhost:" + server.Ports[0] + "/foo");
return watch.ElapsedMilliseconds;
}
// Act
await ExecuteTimedRequestAsync();
await ExecuteTimedRequestAsync();
await ExecuteTimedRequestAsync();
server.Stop();
}
[Fact]
public async Task WireMockServer_Should_delay_responses()
{