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Brought in YAML lib for configuration and added failing acceptance test

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This commit is contained in:
Tom Pallister 2016-09-01 09:05:04 +01:00
parent e7a41fbc4d
commit 15d7cafa1c
13 changed files with 69 additions and 321 deletions
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6
src/Ocelot.Library/Infrastructure/Configuration/Configuration.cs
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@ -8,11 +8,7 @@ namespace Ocelot.Library.Infrastructure.Configuration
{
Routes = new List<Route>();
}
public Configuration(List<Route> routes)
{
Routes = routes;
}
public List<Route> Routes { get; private set; }
public List<Route> Routes { get; set; }
}
}

22
src/Ocelot.Library/Infrastructure/Configuration/ConfigurationReader.cs
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@ -1,22 +0,0 @@
namespace Ocelot.Library.Infrastructure.Configuration
{
using System.IO;
using YamlDotNet.Serialization;
using YamlDotNet.Serialization.NamingConventions;
public class ConfigurationReader : IConfigurationReader
{
public Configuration Read(string configurationFilePath)
{
var contents = File.ReadAllText(configurationFilePath);
var input = new StringReader(contents);
var deserializer = new Deserializer(namingConvention: new CamelCaseNamingConvention());
var configuration = deserializer.Deserialize<Configuration>(input);
return configuration;;
}
}
}

7
src/Ocelot.Library/Infrastructure/Configuration/IConfigurationReader.cs
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@ -1,7 +0,0 @@
namespace Ocelot.Library.Infrastructure.Configuration
{
public interface IConfigurationReader
{
Configuration Read(string configurationFilePath);
}
}

14
src/Ocelot.Library/Infrastructure/Configuration/Route.cs
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@ -2,17 +2,7 @@
{
public class Route
{
public Route()
{
}
public Route(string downstream, string upstream)
{
Downstream = downstream;
Upstream = upstream;
}
public string Downstream { get; private set; }
public string Upstream { get; private set; }
public string Downstream { get; set; }
public string Upstream { get; set; }
}
}

42
src/Ocelot.Library/Infrastructure/Configuration/YamlConfigurationExtensions.cs
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@ -1,42 +0,0 @@
using System.IO;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.FileProviders;
namespace Ocelot.Library.Infrastructure.Configuration
{
public static class YamlConfigurationExtensions
{
public static IConfigurationBuilder AddYamlFile(this IConfigurationBuilder builder, string path)
{
return AddYamlFile(builder, provider: null, path: path, optional: false, reloadOnChange: false);
}
public static IConfigurationBuilder AddYamlFile(this IConfigurationBuilder builder, string path, bool optional)
{
return AddYamlFile(builder, provider: null, path: path, optional: optional, reloadOnChange: false);
}
public static IConfigurationBuilder AddYamlFile(this IConfigurationBuilder builder, string path, bool optional, bool reloadOnChange)
{
return AddYamlFile(builder, provider: null, path: path, optional: optional, reloadOnChange: reloadOnChange);
}
public static IConfigurationBuilder AddYamlFile(this IConfigurationBuilder builder, IFileProvider provider, string path, bool optional, bool reloadOnChange)
{
if (provider == null && Path.IsPathRooted(path))
{
provider = new PhysicalFileProvider(Path.GetDirectoryName(path));
path = Path.GetFileName(path);
}
var source = new YamlConfigurationSource
{
FileProvider = provider,
Path = path,
Optional = optional,
ReloadOnChange = reloadOnChange
};
builder.Add(source);
return builder;
}
}
}

121
src/Ocelot.Library/Infrastructure/Configuration/YamlConfigurationFileParser.cs
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@ -1,121 +0,0 @@
namespace Ocelot.Library.Infrastructure.Configuration
{
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Microsoft.Extensions.Configuration;
using YamlDotNet.RepresentationModel;
internal class YamlConfigurationFileParser
{
private readonly IDictionary<string, string> _data = new SortedDictionary<string, string>(StringComparer.OrdinalIgnoreCase);
private readonly Stack<string> _context = new Stack<string>();
private string _currentPath;
public IDictionary<string, string> Parse(Stream input)
{
_data.Clear();
_context.Clear();
// https://dotnetfiddle.net/rrR2Bb
var yaml = new YamlStream();
yaml.Load(new StreamReader(input));
if (yaml.Documents.Any())
{
var mapping = (YamlMappingNode)yaml.Documents[0].RootNode;
// The document node is a mapping node
VisitYamlMappingNode(mapping);
}
return _data;
}
private void VisitYamlNodePair(KeyValuePair<YamlNode, YamlNode> yamlNodePair)
{
var context = ((YamlScalarNode)yamlNodePair.Key).Value;
VisitYamlNode(context, yamlNodePair.Value);
}
private void VisitYamlNode(string context, YamlNode node)
{
if (node is YamlScalarNode)
{
VisitYamlScalarNode(context, (YamlScalarNode)node);
}
if (node is YamlMappingNode)
{
VisitYamlMappingNode(context, (YamlMappingNode)node);
}
if (node is YamlSequenceNode)
{
VisitYamlSequenceNode(context, (YamlSequenceNode)node);
}
}
private void VisitYamlScalarNode(string context, YamlScalarNode yamlValue)
{
//a node with a single 1-1 mapping
EnterContext(context);
var currentKey = _currentPath;
if (_data.ContainsKey(currentKey))
{
throw new FormatException("Key is duplicate ${currentKey}");
}
_data[currentKey] = yamlValue.Value;
ExitContext();
}
private void VisitYamlMappingNode(YamlMappingNode node)
{
foreach (var yamlNodePair in node.Children)
{
VisitYamlNodePair(yamlNodePair);
}
}
private void VisitYamlMappingNode(string context, YamlMappingNode yamlValue)
{
//a node with an associated sub-document
EnterContext(context);
VisitYamlMappingNode(yamlValue);
ExitContext();
}
private void VisitYamlSequenceNode(string context, YamlSequenceNode yamlValue)
{
//a node with an associated list
EnterContext(context);
VisitYamlSequenceNode(yamlValue);
ExitContext();
}
private void VisitYamlSequenceNode(YamlSequenceNode node)
{
for (int i = 0; i < node.Children.Count; i++)
{
VisitYamlNode(i.ToString(), node.Children[i]);
}
}
private void EnterContext(string context)
{
_context.Push(context);
_currentPath = ConfigurationPath.Combine(_context.Reverse());
}
private void ExitContext()
{
_context.Pop();
_currentPath = ConfigurationPath.Combine(_context.Reverse());
}
}
}

22
src/Ocelot.Library/Infrastructure/Configuration/YamlConfigurationProvider.cs
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@ -1,22 +0,0 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace Ocelot.Library.Infrastructure.Configuration
{
using System.IO;
using Microsoft.Extensions.Configuration;
public class YamlConfigurationProvider : FileConfigurationProvider
{
public YamlConfigurationProvider(YamlConfigurationSource source) : base(source) { }
public override void Load(Stream stream)
{
var parser = new YamlConfigurationFileParser();
Data = parser.Parse(stream);
}
}
}

13
src/Ocelot.Library/Infrastructure/Configuration/YamlConfigurationSource.cs
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@ -1,13 +0,0 @@
namespace Ocelot.Library.Infrastructure.Configuration
{
using Microsoft.Extensions.Configuration;
public class YamlConfigurationSource : FileConfigurationSource
{
public override IConfigurationProvider Build(IConfigurationBuilder builder)
{
FileProvider = FileProvider ?? builder.GetFileProvider();
return new YamlConfigurationProvider(this);
}
}
}

1
src/Ocelot/Startup.cs
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@ -1,6 +1,5 @@
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;

3
src/Ocelot/project.json
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@ -15,7 +15,8 @@
"Microsoft.Extensions.Logging.Console": "1.0.0",
"Microsoft.Extensions.Logging.Debug": "1.0.0",
"Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
"Ocelot.Library": "1.0.0-*"
"Ocelot.Library": "1.0.0-*",
"NetEscapades.Configuration.Yaml": "1.1.0"
},
"tools": {

54
test/Ocelot.AcceptanceTests/ConfigurationReaderTests.cs
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@ -1,54 +0,0 @@
namespace Ocelot.AcceptanceTests
{
using System.Collections.Generic;
using Library.Infrastructure.Configuration;
using Shouldly;
using TestStack.BDDfy;
using Xunit;
public class ConfigurationReaderTests
{
private readonly IConfigurationReader _configurationReader;
private string _configPath;
private Configuration _result;
public ConfigurationReaderTests()
{
_configurationReader = new ConfigurationReader();
}
[Fact]
public void can_read_configuration()
{
const string path = "./ConfigurationReaderTests.can_read_configuration.yaml";
var expected =
new Configuration(new List<Route>
{
new Route("productservice/category/{categoryId}/products/{productId}/variants/{variantId}",
"https://www.moonpig.com/api/products/{categoryId}/{productId}/{variantId}")
});
this.Given(x => x.GivenAConfigPathOf(path))
.When(x => x.WhenICallTheConfigurationReader())
.Then(x => x.ThenTheFollowingConfigurationIsReturned(expected))
.BDDfy();
}
private void GivenAConfigPathOf(string configPath)
{
_configPath = configPath;
}
private void WhenICallTheConfigurationReader()
{
_result = _configurationReader.Read(_configPath);
}
private void ThenTheFollowingConfigurationIsReturned(Configuration expected)
{
_result.Routes[0].Downstream.ShouldBe(expected.Routes[0].Downstream);
_result.Routes[0].Upstream.ShouldBe(expected.Routes[0].Upstream);
}
}
}

79
test/Ocelot.AcceptanceTests/OcelotTests.cs
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@ -1,37 +1,36 @@
using System;
using System.Net.Http;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.TestHost;
using Xunit;
using Ocelot.AcceptanceTests.Fake;
using Shouldly;
namespace Ocelot.AcceptanceTests
{
using System;
using System.Net.Http;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.TestHost;
using Xunit;
using Ocelot.AcceptanceTests.Fake;
using Shouldly;
using System.Collections.Generic;
using System.IO;
using System.Net;
using Library.Infrastructure.Configuration;
using TestStack.BDDfy;
using YamlDotNet.Serialization;
public class OcelotTests : IDisposable
{
private readonly FakeService _fakeService;
private readonly TestServer _server;
private readonly HttpClient _client;
private TestServer _server;
private HttpClient _client;
private HttpResponseMessage _response;
public OcelotTests()
{
_server = new TestServer(new WebHostBuilder()
.UseStartup<Startup>());
_client = _server.CreateClient();
_fakeService = new FakeService();
}
[Fact]
public void should_return_response_404()
{
this.When(x => x.WhenIRequestTheUrl("/"))
this.Given(x => x.GivenTheApiGatewayIsRunning())
.When(x => x.WhenIRequestTheUrlOnTheApiGateway("/"))
.Then(x => x.ThenTheStatusCodeShouldBe(HttpStatusCode.NotFound))
.BDDfy();
}
@ -39,13 +38,57 @@ namespace Ocelot.AcceptanceTests
[Fact]
public void should_return_response_200()
{
this.When(x => x.WhenIRequestTheUrl("/"))
this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51879"))
.And(x => x.GivenThereIsAConfiguration(new Configuration
{
Routes = new List<Route>
{
new Route
{
Downstream = "http://localhost:51879/",
Upstream = "/heee"
}
}
}))
.And(x => x.GivenTheApiGatewayIsRunning())
.When(x => x.WhenIRequestTheUrlOnTheApiGateway("/"))
.Then(x => x.ThenTheStatusCodeShouldBe(HttpStatusCode.OK))
.And(x => x.ThenTheResponseBodyShouldBe("Hello from Laura"))
.BDDfy();
}
private void WhenIRequestTheUrl(string url)
/// <summary>
/// This is annoying cos it should be in the constructor but we need to set up the yaml file before calling startup so its a step.
/// </summary>
private void GivenTheApiGatewayIsRunning()
{
_server = new TestServer(new WebHostBuilder()
.UseStartup<Startup>());
_client = _server.CreateClient();
}
private void GivenThereIsAConfiguration(Configuration configuration)
{
var serializer = new Serializer();
if (File.Exists("./configuration.yaml"))
{
File.Delete("./configuration.yaml");
}
using (TextWriter writer = File.CreateText("./configuration.yaml"))
{
serializer.Serialize(writer, configuration);
}
}
private void GivenThereIsAServiceRunningOn(string url)
{
_fakeService.Start(url);
}
private void WhenIRequestTheUrlOnTheApiGateway(string url)
{
_response = _client.GetAsync("/").Result;
}

6
test/Ocelot.AcceptanceTests/configuration.yaml
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@ -1,3 +1,3 @@
routes:
- downstream: "productservice/category/{categoryId}/products/{productId}/variants/{variantId}"
upstream: "https://www.moonpig.com/api/products/{categoryId}/{productId}/{variantId}"
Routes:
- Downstream: http://localhost:51879/
Upstream: /heee