private static Dictionary<string, RouteParameter> GetRouteParameters(ServiceMethodMetadata metadata)
{
var parameters = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
foreach (Match match in parameterNamePattern.Matches(metadata.UrlInfo.UrlTemplate))
{
parameters.Add(match.Result("$1"));
}
var routeParameters = new Dictionary<string, RouteParameter>(StringComparer.OrdinalIgnoreCase);
foreach (ParameterInfo methodParameter in metadata.MethodInfo.GetParameters())
{
if (!parameters.Contains(methodParameter.Name))
{
continue;
}
var constraintAttribute = methodParameter.GetCustomAttribute<ConstraintAttribute>(false);
if (constraintAttribute != null)
{
routeParameters.Add(methodParameter.Name, new RouteParameter(methodParameter.Name.ToLowerInvariant(),
constraintAttribute.PatternRegex));
}
else
{
routeParameters.Add(methodParameter.Name, new RouteParameter(methodParameter.Name.ToLowerInvariant(), null));
}
}
return routeParameters;
}
private static string GetUrlTemplate(ServiceMethodMetadata metadata, IProxyMetadata proxyMetadata)
{
string urlTemplate = (metadata.ServiceUrl + (metadata.UrlInfo.UrlTemplate.Length > 0 ? UrlSeparator + metadata.UrlInfo.UrlTemplate.TrimStart(UrlSeparator[0]) : UrlSeparator)).Trim(UrlSeparator[0]);
if (proxyMetadata == null)
{
return urlTemplate;
}
var parameters = GetQueryStringParameters(metadata, proxyMetadata).Where(p => p.ExampleValue != null);
var parameterBuilder = new StringBuilder();
foreach (var parameter in parameters)
{
if (parameterBuilder.Length > 0)
{
parameterBuilder.Append("&");
}
parameterBuilder.AppendFormat(CultureInfo.InvariantCulture, "{0}={{{0}}}", HttpUtility.UrlEncode(parameter.Name));
}
if (parameterBuilder.Length == 0)
{
return urlTemplate;
}
return urlTemplate + "?" + parameterBuilder;
}
public ServiceRouteConstraint(ServiceMethodMetadata metadata)
{
m_httpMethods = new HashSet<HttpMethod>(metadata.UrlInfo.HttpMethods);
m_parameters = GetRouteParameters(metadata);
}
private static bool HasResource(ServiceMethodMetadata metadata, HttpMethod httpMethod)
{
if (httpMethod != HttpMethod.Post && httpMethod != HttpMethod.Put && httpMethod != HttpMethod.Patch)
{
return false;
}
var methodParameters = metadata.MethodInfo.GetParameters();
if (methodParameters.Any(p => String.Equals("resource", p.Name, StringComparison.OrdinalIgnoreCase)))
{
return true;
}
return methodParameters.Any(p => Attribute.IsDefined(p, typeof(ResourceAttribute), false));
}
private static ProxyOperation GenerateProxyOperation(ServiceMethodMetadata metadata)
{
if (metadata.MethodInfo.DeclaringType == null)
{
return null;
}
IProxyMetadata proxyMetadata = ServiceContractTypeRegistry.GetProxyMetadata(metadata.MethodInfo.DeclaringType);
if (proxyMetadata != null && proxyMetadata.IsHidden(metadata.MethodInfo))
{
return null;
}
IReadOnlyList<XmlDocMetadata> contractDocumentation;
XmlDocMetadata methodDocumentation = null;
var xmlDocFactory = Rest.Configuration.Options.XmlDocFactory;
if (xmlDocFactory != null && xmlDocFactory.Value.TryGetValue(metadata.MethodInfo.DeclaringType, out contractDocumentation))
{
methodDocumentation = contractDocumentation.FirstOrDefault(x => x.Method == metadata.MethodInfo);
}
var operation = new ProxyOperation
{
ServiceUrl = metadata.ServiceUrl,
UrlTempate = GetUrlTemplate(metadata, proxyMetadata),
HttpMethod = metadata.UrlInfo.HttpMethods.First(),
SupportedHttpMethods = GetSupportedHttpMethods(metadata),
MetadataUrl = String.Concat("metadata?oid=", metadata.ServiceMethodId),
ProxyUrl = String.Concat("proxy?oid=", metadata.ServiceMethodId),
Description = GetDescription(metadata.MethodInfo, proxyMetadata, methodDocumentation),
LongDescription = GetLongDescription(metadata.MethodInfo, proxyMetadata, methodDocumentation),
ResultType = metadata.MethodInfo.ReturnType,
RouteParameters = GetParameters(metadata, proxyMetadata),
HttpsPort = proxyMetadata != null && proxyMetadata.GetHttps(metadata.MethodInfo) != null ? proxyMetadata.GetHttps(metadata.MethodInfo).Port : 0,
IsIPFiltered = proxyMetadata != null && proxyMetadata.IsIPFiltered(metadata.MethodInfo),
DoesNotSupportJson = proxyMetadata != null && !proxyMetadata.HasJsonSupport(metadata.MethodInfo),
DoesNotSupportXml = proxyMetadata != null && !proxyMetadata.HasXmlSupport(metadata.MethodInfo),
Credentials = GetCredentials(metadata, proxyMetadata),
AdditionalHeaders = proxyMetadata != null ? proxyMetadata.GetHeaders(metadata.MethodInfo) : new List<HeaderMetadata>()
};
operation.StatusCodes = GetStatusCodes(metadata.MethodInfo, proxyMetadata, operation.HasResource, operation.HasResponse, operation.HttpsPort > 0);
operation.HasResource = HasResource(metadata, operation.HttpMethod);
Tuple<ResourceExampleMetadata, ResourceExampleMetadata> resourceExampleTypes = GetResourceExampleTypes(metadata.MethodInfo, proxyMetadata);
operation.RequestResourceExample = resourceExampleTypes.Item1;
operation.ResponseResourceExample = resourceExampleTypes.Item2;
return operation;
}
private static AuthenticationMetadata GetCredentials(ServiceMethodMetadata metadata, IProxyMetadata proxyMetadata)
{
if (proxyMetadata == null)
{
return null;
}
AuthenticationMetadata authenticationInfo = proxyMetadata.GetAuthentication(metadata.MethodInfo);
if (authenticationInfo == null)
{
return null;
}
if (!String.IsNullOrEmpty(authenticationInfo.RelativeUrlToMatch) &&
!authenticationInfo.RelativeUrlToMatch.Trim().TrimStart('~', '/').Equals(metadata.ServiceUrl, StringComparison.OrdinalIgnoreCase))
{
return null;
}
return authenticationInfo;
}
private static IEnumerable<ParameterMetadata> GetRouteParameters(ServiceMethodMetadata metadata, IProxyMetadata proxyMetadata)
{
var routeParameters = new List<ParameterMetadata>();
foreach (ParameterInfo parameter in metadata.MethodInfo.GetParameters())
{
if (metadata.UrlInfo.UrlTemplate.IndexOf(String.Concat("{", parameter.Name, "}"), StringComparison.OrdinalIgnoreCase) < 0)
{
continue;
}
ParameterMetadata parameterMetadata = proxyMetadata != null ?
proxyMetadata.GetParameter(metadata.MethodInfo, parameter.Name, RequestParameterType.Route) :
null;
var routeParameter = new ParameterMetadata
{
Name = parameter.Name.ToLowerInvariant(),
ParameterType = RequestParameterType.Route,
Type = parameter.ParameterType,
IsOptionalParameter = parameter.DefaultValue != DBNull.Value,
RegexConstraint = GetParameterConstraint(parameter),
ExampleValue = parameterMetadata != null ? parameterMetadata.ExampleValue : null,
AllowedValues = parameterMetadata != null ? parameterMetadata.AllowedValues : null
};
routeParameters.Add(routeParameter);
}
return routeParameters;
}
private static IEnumerable<ParameterMetadata> GetBodyParameters(ServiceMethodMetadata metadata, IProxyMetadata proxyMetadata)
{
var parameters = new List<ParameterMetadata>();
if (proxyMetadata == null)
{
return parameters;
}
foreach (var parameter in proxyMetadata.GetParameters(metadata.MethodInfo, RequestParameterType.Body))
{
parameters.Add(new ParameterMetadata
{
Name = parameter.Name.ToLowerInvariant(),
ParameterType = parameter.ParameterType,
Type = parameter.Type,
IsOptionalParameter = parameter.IsOptionalParameter,
RegexConstraint = parameter.RegexConstraint,
ExampleValue = parameter.ExampleValue,
AllowedValues = parameter.AllowedValues
});
}
var bodyParameters = metadata.MethodInfo.GetParameters()
.Where(x => Attribute.IsDefined(x, typeof(FromBodyAttribute)) &&
parameters.All(p => p.Name != x.Name.ToLowerInvariant()))
.ToArray();
foreach (ParameterInfo bodyParameter in bodyParameters)
{
parameters.Add(new ParameterMetadata
{
Name = bodyParameter.Name.ToLowerInvariant(),
ParameterType = RequestParameterType.Body,
Type = bodyParameter.ParameterType
});
}
return parameters;
}
private static ICollection<ParameterMetadata> GetParameters(ServiceMethodMetadata metadata, IProxyMetadata proxyMetadata)
{
var parameters = new List<ParameterMetadata>(GetQueryStringParameters(metadata, proxyMetadata));
parameters.AddRange(GetBodyParameters(metadata, proxyMetadata));
parameters.AddRange(GetRouteParameters(metadata, proxyMetadata));
IReadOnlyList<XmlDocMetadata> contractDocumentation;
XmlDocMetadata methodDocumentation = null;
var xmlDocFactory = Rest.Configuration.Options.XmlDocFactory;
if (xmlDocFactory != null && metadata.MethodInfo.DeclaringType != null &&
xmlDocFactory.Value.TryGetValue(metadata.MethodInfo.DeclaringType, out contractDocumentation))
{
methodDocumentation = contractDocumentation.FirstOrDefault(x => x.Method == metadata.MethodInfo);
}
if (methodDocumentation != null)
{
foreach (ParameterMetadata parameter in parameters)
{
string description;
if (methodDocumentation.Parameters.TryGetValue(parameter.Name, out description))
{
parameter.Description = description;
}
}
}
return parameters.Distinct().ToList();
}
private static string GetSupportedHttpMethods(ServiceMethodMetadata metadata)
{
return String.Join(", ", metadata.UrlInfo.HttpMethods.Where(m => m != metadata.UrlInfo.HttpMethods.First()).Select(m => m.ToString().ToUpperInvariant()));
}
