RegexExampleValueGenerator

examples/WireMock.Net.OpenApiParser.ConsoleApp/Program.cs

@@ -18,7 +18,7 @@ class Program
     private static void RunMockServerWithDynamicExampleGeneration()
     {
         // Run your mocking framework specifying your Example Values generator class.
-        var serverCustomer_V2_json = Run.RunServer(Path.Combine(Folder, "Swagger_Customer_V2.0.json"), "http://localhost:8090/", true, new DynamicDataGeneration(), Types.ExampleValueType.Value, Types.ExampleValueType.Value);
+        var serverCustomer_V2_json = Run.RunServer(Path.Combine(Folder, "Swagger_Customer_V2.0.json"), "http://localhost:8090/", true, new DynamicDataGeneration(), Types.PatternType.Value, Types.PatternType.Value);
         Console.WriteLine("Press any key to stop the servers");
 
         Console.ReadKey();

examples/WireMock.Net.OpenApiParser.ConsoleApp/Run.cs

@@ -18,8 +18,8 @@ public static class Run
         string url,
         bool dynamicExamples = true,
         IWireMockOpenApiParserExampleValues? examplesValuesGenerator = null,
-        ExampleValueType pathPatternToUse = ExampleValueType.Wildcard,
+        PatternType pathPatternToUse = PatternType.Wildcard,
-        ExampleValueType headerPatternToUse = ExampleValueType.Wildcard
+        PatternType headerPatternToUse = PatternType.Wildcard
     )
     {
         var server = WireMockServer.Start(new WireMockServerSettings

src/WireMock.Net.OpenApiParser/Mappers/OpenApiPathsMapper.cs

@@ -37,18 +37,7 @@ internal class OpenApiPathsMapper
             .OrderBy(p => p.Key)
             .Select(p => MapPath(p.Key, p.Value, servers))
             .SelectMany(x => x)
-            .ToArray() ??
+            .ToArray() ?? Array.Empty<MappingModel>();
-               Array.Empty<MappingModel>();
-    }
-
-    private IReadOnlyList<MappingModel> MapPaths(OpenApiPaths? paths, IList<OpenApiServer> servers)
-    {
-        return paths?
-            .OrderBy(p => p.Key)
-            .Select(p => MapPath(p.Key, p.Value, servers))
-            .SelectMany(x => x)
-            .ToArray() ??
-               Array.Empty<MappingModel>();
     }
 
     private IReadOnlyList<MappingModel> MapPath(string path, OpenApiPathItem pathItem, IList<OpenApiServer> servers)
@@ -280,41 +269,6 @@ internal class OpenApiPathsMapper
         return newPath;
     }
 
-    private string MapBasePath(IList<OpenApiServer>? servers)
-    {
-        if (servers == null || servers.Count == 0)
-        {
-            return string.Empty;
-        }
-
-        OpenApiServer server = servers.First();
-        if (Uri.TryCreate(server.Url, UriKind.RelativeOrAbsolute, out Uri uriResult))
-        {
-            return uriResult.IsAbsoluteUri ? uriResult.AbsolutePath : uriResult.ToString();
-        }
-
-        return string.Empty;
-    }
-
-    private JToken? MapOpenApiAnyToJToken(IOpenApiAny? any)
-    {
-        if (any == null)
-        {
-            return null;
-        }
-
-        using var outputString = new StringWriter();
-        var writer = new OpenApiJsonWriter(outputString);
-        any.Write(writer, OpenApiSpecVersion.OpenApi3_0);
-
-        if (any.AnyType == AnyType.Array)
-        {
-            return JArray.Parse(outputString.ToString());
-        }
-
-        return JObject.Parse(outputString.ToString());
-    }
-
     private IDictionary<string, object>? MapHeaders(string? responseContentType, IDictionary<string, OpenApiHeader>? headers)
     {
         var mappedHeaders = headers?.ToDictionary(
@@ -366,26 +320,34 @@ internal class OpenApiPathsMapper
         return list.Any() ? list : null;
     }
 
-    private MatcherModel GetExampleMatcherModel(OpenApiSchema? schema, ExampleValueType type)
+    private MatcherModel GetExampleMatcherModel(OpenApiSchema? schema, ExampleValueType exampleValueType)
     {
-        return type switch
+        return exampleValueType switch
         {
             ExampleValueType.Value => new MatcherModel
             {
                 Name = "ExactMatcher",
-                Pattern = GetExampleValueAsStringForSchemaType(schema),
+                Pattern = GetExampleValueAsStringForSchemaType(schema, exampleValueType),
+                IgnoreCase = _settings.IgnoreCaseExampleValues
+            },
+
+            ExampleValueType.Regex => new MatcherModel
+            {
+                Name = "RegexMatcher",
+                Pattern = GetExampleValueAsStringForSchemaType(schema, exampleValueType),
                 IgnoreCase = _settings.IgnoreCaseExampleValues
             },
 
             _ => new MatcherModel
             {
                 Name = "WildcardMatcher",
-                Pattern = "*"
+                Pattern = "*",
+                IgnoreCase = _settings.IgnoreCaseExampleValues
             }
         };
     }
 
-    private string GetExampleValueAsStringForSchemaType(OpenApiSchema? schema)
+    private string GetExampleValueAsStringForSchemaType(OpenApiSchema? schema, ExampleValueType exampleValueType)
     {
         var value = _exampleValueGenerator.GetExampleValue(schema);
 
@@ -396,4 +358,39 @@ internal class OpenApiPathsMapper
             _ => value.ToString(),
         };
     }
+
+    private static string MapBasePath(IList<OpenApiServer>? servers)
+    {
+        if (servers == null || servers.Count == 0)
+        {
+            return string.Empty;
+        }
+
+        var server = servers.First();
+        if (Uri.TryCreate(server.Url, UriKind.RelativeOrAbsolute, out Uri uriResult))
+        {
+            return uriResult.IsAbsoluteUri ? uriResult.AbsolutePath : uriResult.ToString();
+        }
+
+        return string.Empty;
+    }
+
+    private static JToken? MapOpenApiAnyToJToken(IOpenApiAny? any)
+    {
+        if (any == null)
+        {
+            return null;
+        }
+
+        using var outputString = new StringWriter();
+        var writer = new OpenApiJsonWriter(outputString);
+        any.Write(writer, OpenApiSpecVersion.OpenApi3_0);
+
+        if (any.AnyType == AnyType.Array)
+        {
+            return JArray.Parse(outputString.ToString());
+        }
+
+        return JObject.Parse(outputString.ToString());
+    }
 }

src/WireMock.Net.OpenApiParser/Types/ExampleValueType.cs

@@ -1,7 +1,7 @@
 namespace WireMock.Net.OpenApiParser.Types;
 
 /// <summary>
-/// The example value to use
+/// The (example) value pattern to use.
 /// </summary>
 public enum ExampleValueType
 {
@@ -12,6 +12,11 @@ public enum ExampleValueType
     /// </summary>
     Value,
 
+    /// <summary>
+    /// Build a Regex based on the SchemaType.
+    /// </summary>
+    Regex,
+
     /// <summary>
     /// Just use a Wildcard (*) character.
     /// </summary>

src/WireMock.Net.OpenApiParser/Utils/RegexExampleValueGenerator.cs

@@ -0,0 +1,53 @@
+using System.Linq;
+using Microsoft.OpenApi.Models;
+using Stef.Validation;
+using WireMock.Net.OpenApiParser.Extensions;
+using WireMock.Net.OpenApiParser.Settings;
+using WireMock.Net.OpenApiParser.Types;
+
+namespace WireMock.Net.OpenApiParser.Utils;
+
+internal class RegexExampleValueGenerator
+{
+    public RegexExampleValueGenerator(WireMockOpenApiParserSettings settings)
+    {
+        Guard.NotNull(settings);
+    }
+
+    public string GetExampleValue(OpenApiSchema? schema)
+    {
+        var schemaExample = schema?.Example;
+        var schemaEnum = schema?.Enum?.FirstOrDefault();
+
+        switch (schema?.GetSchemaType())
+        {
+            case SchemaType.Boolean:
+                return @"^(true|false)$";
+
+            case SchemaType.Integer:
+                return @"^-?\d+$";
+
+            case SchemaType.Number:
+                return @"^[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?$";
+
+            default:
+                switch (schema?.GetSchemaFormat())
+                {
+                    case SchemaFormat.Date:
+                        return @"^(\d{4})-([01]\d)-([0-3]\d)$";
+
+                    case SchemaFormat.DateTime:
+                        return @"^(\d{4})-([01]\d)-([0-3]\d)T([0-2]\d):([0-5]\d):([0-5]\d)(\.\d+)?(Z|[+-][0-2]\d:[0-5]\d)$";
+
+                    case SchemaFormat.Byte:
+                        return @"^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$";
+
+                    case SchemaFormat.Binary:
+                        return @"^[a-zA-Z0-9\+/]*={0,3}$";
+
+                    default:
+                        return ".*";
+                }
+        }
+    }
+}

src/WireMock.Net/Server/WireMockServer.OpenApiParser.cs

@@ -2,20 +2,39 @@
 using System;
 using System.Linq;
 using System.Net;
+using Newtonsoft.Json;
 using WireMock.Net.OpenApiParser;
+using WireMock.Net.OpenApiParser.Settings;
+using WireMock.Net.OpenApiParser.Types;
+using WireMock.Serialization;
 #endif
 
 namespace WireMock.Server;
 
 public partial class WireMockServer
 {
+#if OPENAPIPARSER
+    private readonly WireMockOpenApiParserSettings _openApiParserSettings = new WireMockOpenApiParserSettings
+    {
+        PathPatternToUse = ExampleValueType.Regex,
+        HeaderPatternToUse = ExampleValueType.Regex,
+        QueryParameterPatternToUse = ExampleValueType.Regex
+    };
+#endif
+
     private IResponseMessage OpenApiConvertToMappings(IRequestMessage requestMessage)
     {
 #if OPENAPIPARSER
         try
         {
             var mappingModels = new WireMockOpenApiParser().FromText(requestMessage.Body, out var diagnostic);
-            return diagnostic.Errors.Any() ? ToJson(diagnostic, false, HttpStatusCode.BadRequest) : ToJson(mappingModels);
+            if (diagnostic.Errors.Any())
+            {
+                var diagnosticAsJson = JsonConvert.SerializeObject(diagnostic, JsonSerializationConstants.JsonSerializerSettingsDefault);
+                _settings.Logger.Warn("OpenApiError(s) while converting OpenAPI specification to MappingModel(s) : {0}", diagnosticAsJson);
+            }
+
+            return ToJson(mappingModels);
         }
         catch (Exception e)
         {
@@ -35,7 +54,8 @@ public partial class WireMockServer
             var mappingModels = new WireMockOpenApiParser().FromText(requestMessage.Body, out var diagnostic);
             if (diagnostic.Errors.Any())
             {
-                return ToJson(diagnostic, false, HttpStatusCode.BadRequest);
+                var diagnosticAsJson = JsonConvert.SerializeObject(diagnostic, JsonSerializationConstants.JsonSerializerSettingsDefault);
+                _settings.Logger.Warn("OpenApiError(s) while converting OpenAPI specification to MappingModel(s) : {0}", diagnosticAsJson);
             }
 
             ConvertMappingsAndRegisterAsRespondProvider(mappingModels);