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#683 validate if there are duplicated placeholders in UpstreamPathTemplate

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jlukawska
2019-12-16 21:19:31 +01:00
parent f15e3a9acf
commit caf5cf80fa
2 changed files with 39 additions and 0 deletions
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13
src/Ocelot/Configuration/Validator/FileConfigurationFluentValidator.cs
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@@ -9,6 +9,7 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
public class FileConfigurationFluentValidator : AbstractValidator<FileConfiguration>, IConfigurationValidator
@@ -35,6 +36,10 @@
.Must((config, reRoute) => HaveServiceDiscoveryProviderRegistered(reRoute, config.GlobalConfiguration.ServiceDiscoveryProvider))
.WithMessage((config, reRoute) => $"Unable to start Ocelot, errors are: Unable to start Ocelot because either a ReRoute or GlobalConfiguration are using ServiceDiscoveryOptions but no ServiceDiscoveryFinderDelegate has been registered in dependency injection container. Are you missing a package like Ocelot.Provider.Consul and services.AddConsul() or Ocelot.Provider.Eureka and services.AddEureka()?");
RuleForEach(configuration => configuration.ReRoutes)
.Must((config, reRoute) => IsPlaceholderNotDuplicatedIn(reRoute.UpstreamPathTemplate))
.WithMessage((config, reRoute) => $"{nameof(reRoute)} {reRoute.UpstreamPathTemplate} has duplicated placeholder");
RuleFor(configuration => configuration.GlobalConfiguration.ServiceDiscoveryProvider)
.Must(HaveServiceDiscoveryProviderRegistered)
.WithMessage((config, reRoute) => $"Unable to start Ocelot, errors are: Unable to start Ocelot because either a ReRoute or GlobalConfiguration are using ServiceDiscoveryOptions but no ServiceDiscoveryFinderDelegate has been registered in dependency injection container. Are you missing a package like Ocelot.Provider.Consul and services.AddConsul() or Ocelot.Provider.Eureka and services.AddEureka()?");
@@ -109,6 +114,14 @@
return reRoutesForAggregate.Count() == fileAggregateReRoute.ReRouteKeys.Count;
}
private bool IsPlaceholderNotDuplicatedIn(string upstreamPathTemplate)
{
Regex regExPlaceholder = new Regex("{[^}]+}");
var matches = regExPlaceholder.Matches(upstreamPathTemplate);
var upstreamPathPlaceholders = matches.Select(m => m.Value);
return upstreamPathPlaceholders.Count() == upstreamPathPlaceholders.Distinct().Count();
}
private static bool DoesNotContainReRoutesWithSpecificRequestIdKeys(FileAggregateReRoute fileAggregateReRoute,
List<FileReRoute> reRoutes)
{

26
test/Ocelot.UnitTests/Configuration/Validation/FileConfigurationFluentValidatorTests.cs
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@@ -1341,6 +1341,32 @@
.BDDfy();
}
[Fact]
public void configuration_is_invalid_when_placeholder_is_used_twice_in_upstream_path_template()
{
this.Given(x => x.GivenAConfiguration(new FileConfiguration
{
ReRoutes = new List<FileReRoute>
{
new FileReRoute
{
DownstreamPathTemplate = "/bar/{everything}",
DownstreamScheme = "http",
DownstreamHostAndPorts = new List<FileHostAndPort>
{
new FileHostAndPort() { Host = "a.b.cd" },
},
UpstreamPathTemplate = "/foo/bar/{everything}/{everything}",
UpstreamHttpMethod = new List<string> { "Get" },
},
},
}))
.When(x => x.WhenIValidateTheConfiguration())
.Then(x => x.ThenTheResultIsNotValid())
.And(x => x.ThenTheErrorMessageAtPositionIs(0, "reRoute /foo/bar/{everything}/{everything} has duplicated placeholder"))
.BDDfy();
}
private void GivenAConfiguration(FileConfiguration fileConfiguration)
{
_fileConfiguration = fileConfiguration;