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ServiceMetadata.cs
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445 lines (358 loc) · 12.1 KB
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using SimpleStack.Interfaces;
using SimpleStack.Enums;
using SimpleStack.Attributes;
using SimpleStack.Extensions;
namespace SimpleStack
{
public class ServiceMetadata
{
public ServiceMetadata ()
{
this.RequestTypes = new HashSet<Type> ();
this.ServiceTypes = new HashSet<Type> ();
this.ResponseTypes = new HashSet<Type> ();
this.OperationsMap = new Dictionary<Type, Operation> ();
this.OperationsResponseMap = new Dictionary<Type, Operation> ();
this.OperationNamesMap = new Dictionary<string, Operation> ();
this.Routes = new ServiceRoutes ();
}
public Dictionary<Type, Operation> OperationsMap { get; protected set; }
public Dictionary<Type, Operation> OperationsResponseMap { get; protected set; }
public Dictionary<string, Operation> OperationNamesMap { get; protected set; }
public HashSet<Type> RequestTypes { get; protected set; }
public HashSet<Type> ServiceTypes { get; protected set; }
public HashSet<Type> ResponseTypes { get; protected set; }
public ServiceRoutes Routes { get; set; }
public IEnumerable<Operation> Operations {
get { return OperationsMap.Values; }
}
public void Add (Type serviceType, Type requestType, Type responseType)
{
this.ServiceTypes.Add (serviceType);
this.RequestTypes.Add (requestType);
var restrictTo = requestType.GetCustomAttributes (true)
.OfType<RestrictAttribute> ().FirstOrDefault ()
?? serviceType.GetCustomAttributes (true)
.OfType<RestrictAttribute> ().FirstOrDefault ();
var operation = new Operation {
ServiceType = serviceType,
RequestType = requestType,
ResponseType = responseType,
RestrictTo = restrictTo,
Actions = GetImplementedActions (serviceType, requestType),
Routes = new List<RestPath> (),
};
this.OperationsMap [requestType] = operation;
this.OperationNamesMap [requestType.Name.ToLower ()] = operation;
if (responseType != null) {
this.ResponseTypes.Add (responseType);
this.OperationsResponseMap [responseType] = operation;
}
}
public void AfterInit ()
{
foreach (var restPath in Routes.RestPaths) {
Operation operation;
if (!OperationsMap.TryGetValue (restPath.RequestType, out operation))
continue;
operation.Routes.Add (restPath);
}
}
public List<OperationDto> GetOperationDtos ()
{
return OperationsMap.Values
.SafeConvertAll (x => x.ToOperationDto ())
.OrderBy (x => x.Name)
.ToList ();
}
public Operation GetOperation (Type operationType)
{
Operation op;
OperationsMap.TryGetValue (operationType, out op);
return op;
}
public List<string> GetImplementedActions (Type serviceType, Type requestType)
{
if (typeof(IService).IsAssignableFrom (serviceType)) {
return serviceType.GetActions ()
.Where (x => x.GetParameters () [0].ParameterType == requestType)
.Select (x => x.Name.ToUpper ())
.ToList ();
}
var oldApiActions = serviceType
.GetMethods (BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly)
.Select (x => ToNewApiAction (x.Name))
.Where (x => x != null)
.ToList ();
return oldApiActions;
}
public static string ToNewApiAction (string oldApiAction)
{
switch (oldApiAction) {
case "Get":
case "OnGet":
return "GET";
case "Put":
case "OnPut":
return "PUT";
case "Post":
case "OnPost":
return "POST";
case "Delete":
case "OnDelete":
return "DELETE";
case "Patch":
case "OnPatch":
return "PATCH";
case "Execute":
case "Run":
return "ANY";
}
return null;
}
public Type GetOperationType (string operationTypeName)
{
Operation operation;
OperationNamesMap.TryGetValue (operationTypeName.ToLower (), out operation);
return operation != null ? operation.RequestType : null;
}
public Type GetServiceTypeByRequest (Type requestType)
{
Operation operation;
OperationsMap.TryGetValue (requestType, out operation);
return operation != null ? operation.ServiceType : null;
}
public Type GetServiceTypeByResponse (Type responseType)
{
Operation operation;
OperationsResponseMap.TryGetValue (responseType, out operation);
return operation != null ? operation.ServiceType : null;
}
public Type GetResponseTypeByRequest (Type requestType)
{
Operation operation;
OperationsMap.TryGetValue (requestType, out operation);
return operation != null ? operation.ResponseType : null;
}
public List<Type> GetAllTypes ()
{
var allTypes = new List<Type> (RequestTypes);
foreach (var responseType in ResponseTypes) {
allTypes.AddIfNotExists (responseType);
}
return allTypes;
}
public List<string> GetAllOperationNames ()
{
return Operations.Select (x => x.RequestType.Name).ToList ();
}
public List<string> GetOperationNamesForMetadata (IHttpRequest httpReq)
{
return Operations.Select (x => x.RequestType.Name).ToList ();
}
public List<string> GetOperationNamesForMetadata (IHttpRequest httpReq, Format format)
{
return Operations.Select (x => x.RequestType.Name).ToList ();
}
public bool IsVisible (IHttpRequest httpReq, Operation operation)
{
if (EndpointHost.Config != null && !EndpointHost.Config.EnableAccessRestrictions)
return true;
if (operation.RestrictTo == null)
return true;
//Less fine-grained on /metadata pages. Only check Network and Format
var reqAttrs = httpReq.GetAttributes ();
var showToNetwork = CanShowToNetwork (operation, reqAttrs);
return showToNetwork;
}
public bool IsVisible (IHttpRequest httpReq, Format format, string operationName)
{
if (EndpointHost.Config != null && !EndpointHost.Config.EnableAccessRestrictions)
return true;
Operation operation;
OperationNamesMap.TryGetValue (operationName.ToLower (), out operation);
if (operation == null)
return false;
var canCall = HasImplementation (operation, format);
if (!canCall)
return false;
var isVisible = IsVisible (httpReq, operation);
if (!isVisible)
return false;
if (operation.RestrictTo == null)
return true;
var allowsFormat = operation.RestrictTo.CanShowTo ((EndpointAttributes)(long)format);
return allowsFormat;
}
public bool CanAccess (IHttpRequest httpReq, Format format, string operationName)
{
var reqAttrs = httpReq.GetAttributes ();
return CanAccess (reqAttrs, format, operationName);
}
public bool CanAccess (EndpointAttributes reqAttrs, Format format, string operationName)
{
if (EndpointHost.Config != null && !EndpointHost.Config.EnableAccessRestrictions)
return true;
Operation operation;
OperationNamesMap.TryGetValue (operationName.ToLower (), out operation);
if (operation == null)
return false;
var canCall = HasImplementation (operation, format);
if (!canCall)
return false;
if (operation.RestrictTo == null)
return true;
var allow = operation.RestrictTo.HasAccessTo (reqAttrs);
if (!allow)
return false;
var allowsFormat = operation.RestrictTo.HasAccessTo ((EndpointAttributes)(long)format);
return allowsFormat;
}
public bool CanAccess (Format format, string operationName)
{
if (EndpointHost.Config != null && !EndpointHost.Config.EnableAccessRestrictions)
return true;
Operation operation;
OperationNamesMap.TryGetValue (operationName.ToLower (), out operation);
if (operation == null)
return false;
var canCall = HasImplementation (operation, format);
if (!canCall)
return false;
if (operation.RestrictTo == null)
return true;
var allowsFormat = operation.RestrictTo.HasAccessTo ((EndpointAttributes)(long)format);
return allowsFormat;
}
public bool HasImplementation (Operation operation, Format format)
{
if (format == Format.Soap11 || format == Format.Soap12) {
if (operation.Actions == null)
return false;
return operation.Actions.Contains ("POST")
|| operation.Actions.Contains (ActionContext.AnyAction);
}
return true;
}
private static bool CanShowToNetwork (Operation operation, EndpointAttributes reqAttrs)
{
if (reqAttrs.IsLocalhost ())
return operation.RestrictTo.CanShowTo (EndpointAttributes.Localhost)
|| operation.RestrictTo.CanShowTo (EndpointAttributes.LocalSubnet);
return operation.RestrictTo.CanShowTo (
reqAttrs.IsLocalSubnet ()
? EndpointAttributes.LocalSubnet
: EndpointAttributes.External);
}
}
public class Operation
{
public string Name { get { return RequestType.Name; } }
public Type RequestType { get; set; }
public Type ServiceType { get; set; }
public Type ResponseType { get; set; }
public RestrictAttribute RestrictTo { get; set; }
public List<string> Actions { get; set; }
public List<RestPath> Routes { get; set; }
public bool IsOneWay { get { return ResponseType == null; } }
}
public class OperationDto
{
public string Name { get; set; }
public string ResponseName { get; set; }
public string ServiceName { get; set; }
public List<string> RestrictTo { get; set; }
public List<string> VisibleTo { get; set; }
public List<string> Actions { get; set; }
public Dictionary<string, string> Routes { get; set; }
}
public class XsdMetadata
{
public ServiceMetadata Metadata { get; set; }
public bool Flash { get; set; }
public XsdMetadata (ServiceMetadata metadata, bool flash = false)
{
Metadata = metadata;
Flash = flash;
}
public List<Type> GetAllTypes ()
{
var allTypes = new List<Type> (Metadata.RequestTypes);
allTypes.AddRange (Metadata.ResponseTypes);
return allTypes;
}
public List<string> GetReplyOperationNames (Format format)
{
return Metadata.OperationsMap.Values
.Where (x => EndpointHost.Config != null
&& EndpointHost.Config.MetadataPagesConfig.CanAccess (format, x.Name))
.Where (x => !x.IsOneWay)
.Select (x => x.RequestType.Name)
.ToList ();
}
public List<string> GetOneWayOperationNames (Format format)
{
return Metadata.OperationsMap.Values
.Where (x => EndpointHost.Config != null
&& EndpointHost.Config.MetadataPagesConfig.CanAccess (format, x.Name))
.Where (x => x.IsOneWay)
.Select (x => x.RequestType.Name)
.ToList ();
}
/// <summary>
/// Gets the name of the base most type in the heirachy tree with the same.
///
/// We get an exception when trying to create a schema with multiple types of the same name
/// like when inheriting from a DataContract with the same name.
/// </summary>
/// <param name="type">The type.</param>
/// <returns></returns>
public static Type GetBaseTypeWithTheSameName (Type type)
{
var typesWithSameName = new Stack<Type> ();
var baseType = type;
do {
if (baseType.Name == type.Name)
typesWithSameName.Push (baseType);
} while ((baseType = baseType.BaseType) != null);
return typesWithSameName.Pop ();
}
}
public static class ServiceMetadataExtensions
{
public static OperationDto ToOperationDto (this Operation operation)
{
var to = new OperationDto {
Name = operation.Name,
ResponseName = operation.IsOneWay ? null : operation.ResponseType.Name,
ServiceName = operation.ServiceType.Name,
Actions = operation.Actions,
Routes = operation.Routes.ToDictionary (x => x.Path.PairWith (x.AllowedVerbs)),
};
if (operation.RestrictTo != null) {
to.RestrictTo = operation.RestrictTo.AccessibleToAny.ToList ().ConvertAll (x => x.ToString ());
to.VisibleTo = operation.RestrictTo.VisibleToAny.ToList ().ConvertAll (x => x.ToString ());
}
return to;
}
public static string GetDescription (this Type operationType)
{
var apiAttr = operationType.GetCustomAttributes (typeof(ApiAttribute), true).OfType<ApiAttribute> ().FirstOrDefault ();
return apiAttr != null ? apiAttr.Description : "";
}
public static List<ApiMemberAttribute> GetApiMembers (this Type operationType)
{
var attrs = operationType
.GetMembers (BindingFlags.Instance | BindingFlags.Public)
.SelectMany (x =>
x.GetCustomAttributes (typeof(ApiMemberAttribute), true).OfType<ApiMemberAttribute> ()
)
.ToList ();
return attrs;
}
}
}