private PomonaResponse InvokeAndWrap(PomonaContext context,
HttpStatusCode?statusCode = null)
{
var handler = context.Session.GetInstance(Method.MethodInfo.ReflectedType);
var result = Invoke(handler, context);
var resultAsResponse = result as PomonaResponse;
if (resultAsResponse != null)
{
return(resultAsResponse);
}
var responseBody = result;
if (ReturnType == typeof(void))
{
responseBody = PomonaResponse.NoBodyEntity;
}
if (responseBody == PomonaResponse.NoBodyEntity)
{
statusCode = HttpStatusCode.NoContent;
}
return(new PomonaResponse(context, responseBody, statusCode ?? HttpStatusCode.OK, context.ExpandedPaths));
}
internal HandlerMethodInvocationException(PomonaContext context,
IHandlerMethodInvoker invoker,
string message,
Exception innerException)
: base(message, innerException, HttpStatusCode.InternalServerError)
{
}
internal HandlerMethodInvocationException(PomonaContext context,
IHandlerMethodInvoker invoker,
string message,
Exception innerException)
: base(message, innerException, HttpStatusCode.InternalServerError)
{
}
protected override object OnGetArgument(HandlerParameter parameter, PomonaContext context, object state)
{
if (parameter == this.resourceParameter)
{
return(context.Node.Value);
}
return(base.OnGetArgument(parameter, context, state));
}
private PomonaResponse ProcessPatch(PomonaContext context, string ifMatch)
{
if (context.Method != HttpMethod.Patch)
{
return(null);
}
return(ValidateResourceEtag(ifMatch, context.Node));
}
public PomonaResponse Process(PomonaContext context)
{
string ifMatch = null;
if ((ifMatch = GetIfMatchFromRequest(context)) == null)
return null;
return ProcessPatch(context, ifMatch) ?? ProcessPostToChildResourceRepository(context, ifMatch);
}
public HandledThing Post(HandledThing handledThing, PomonaContext context)
{
if (handledThing == null)
throw new ArgumentNullException(nameof(handledThing));
if (context == null)
throw new ArgumentNullException(nameof(context));
handledThing.Marker = "HANDLER WAS HERE!";
return (HandledThing)this.repository.Post(handledThing);
}
public virtual PomonaResponse Process(PomonaContext context)
{
var routeActions = context.Session.GetRouteActions(context).ToList();
return Before
.Concat(routeActions.Where(x => x.CanProcess(context)))
.Concat(After)
.Where(x => x != null)
.Select(x => x.Process(context))
.FirstOrDefault(response => response != null);
}
public virtual PomonaResponse Process(PomonaContext context)
{
var routeActions = context.Session.GetRouteActions(context).ToList();
return(Before
.Concat(routeActions.Where(x => x.CanProcess(context)))
.Concat(After)
.Where(x => x != null)
.Select(x => x.Process(context))
.FirstOrDefault(response => response != null));
}
public PomonaResponse Process(PomonaContext context)
{
string ifMatch = null;
if ((ifMatch = GetIfMatchFromRequest(context)) == null)
{
return(null);
}
return(ProcessPatch(context, ifMatch) ?? ProcessPostToChildResourceRepository(context, ifMatch));
}
private PomonaResponse ProcessPostToChildResourceRepository(PomonaContext context, string ifMatch)
{
var node = context.Node;
var collectionType = node.ResultType as EnumerableTypeSpec;
if (context.Method != HttpMethod.Post || collectionType == null)
return null;
var parentNode = node.Parent;
if (parentNode != null)
return ValidateResourceEtag(ifMatch, parentNode);
return null;
}
protected override object OnGetArgument(HandlerParameter parameter, PomonaContext context, InvokeState state)
{
if (parameter == this.targetResourceParameter)
{
return(context.Node.Value);
}
if (parameter == this.formParameter)
{
return(state.Form);
}
return(base.OnGetArgument(parameter, context, state));
}
public HandledThing Post(HandledThing handledThing, PomonaContext context)
{
if (handledThing == null)
{
throw new ArgumentNullException(nameof(handledThing));
}
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
handledThing.Marker = "HANDLER WAS HERE!";
return((HandledThing)this.repository.Post(handledThing));
}
protected virtual object OnInvoke(object target, PomonaContext context, TInvokeState state)
{
var args = new object[Parameters.Count];
for (var i = 0; i < Parameters.Count; i++)
{
//else if (resourceIdArg != null && p.Type == resourceIdArg.GetType())
// args[i] = resourceIdArg;
//else
args[i] = OnGetArgument(Parameters[i], context, state);
}
return(Method.MethodInfo.Invoke(target, args));
}
private string GetIfMatchFromRequest(PomonaContext context)
{
var ifMatch = context.Headers.IfMatch.FirstOrDefault();
if (ifMatch != null)
{
ifMatch = ifMatch.Trim();
if (ifMatch.Length < 2 || ifMatch[0] != '"' || ifMatch[ifMatch.Length - 1] != '"')
{
throw new NotImplementedException(
"Only recognized If-Match with quotes around, * not yet supported (TODO).");
}
ifMatch = ifMatch.Substring(1, ifMatch.Length - 2);
}
return ifMatch;
}
private string GetIfMatchFromRequest(PomonaContext context)
{
var ifMatch = context.Headers.IfMatch.FirstOrDefault();
if (ifMatch != null)
{
ifMatch = ifMatch.Trim();
if (ifMatch.Length < 2 || ifMatch[0] != '"' || ifMatch[ifMatch.Length - 1] != '"')
{
throw new NotImplementedException(
"Only recognized If-Match with quotes around, * not yet supported (TODO).");
}
ifMatch = ifMatch.Substring(1, ifMatch.Length - 2);
}
return(ifMatch);
}
private PomonaResponse ProcessPostToChildResourceRepository(PomonaContext context, string ifMatch)
{
var node = context.Node;
var collectionType = node.ResultType as EnumerableTypeSpec;
if (context.Method != HttpMethod.Post || collectionType == null)
{
return(null);
}
var parentNode = node.Parent;
if (parentNode != null)
{
return(ValidateResourceEtag(ifMatch, parentNode));
}
return(null);
}
protected override object OnGetArgument(HandlerParameter parameter, PomonaContext context, object state)
{
var node = context.Node;
var resourceResultType = node.Route.ResultItemType as ResourceType;
if (resourceResultType != null)
{
var primaryIdType = resourceResultType.PrimaryId.PropertyType;
if (parameter.Type == primaryIdType)
{
object parsedId;
if (!node.PathSegment.TryParse(primaryIdType, out parsedId))
{
throw new HandlerMethodInvocationException(context, this, "Unable to parse id from url segment");
}
return(parsedId);
}
}
return(base.OnGetArgument(parameter, context, state));
}
protected virtual object OnGetArgument(HandlerParameter parameter, PomonaContext context, TInvokeState state)
{
if (parameter.IsResource)
{
var parentNode = context
.Node
.Ascendants()
.FirstOrDefault(x => x.ResultType == parameter.TypeSpec);
if (parentNode != null)
{
return(parentNode.Value);
}
}
if (parameter.Type == typeof(PomonaContext))
{
return(context);
}
Exception innerEx = null;
try
{
// Never get value of transformed type parameter from IOC container
if (!parameter.Type.IsValueType && !parameter.IsTransformedType)
{
return(context.Session.GetInstance(parameter.Type));
}
}
catch (Exception ex)
{
innerEx = ex;
}
throw new HandlerMethodInvocationException(context,
this,
$"Unable to invoke handler {Method.MethodInfo.ReflectedType}.{Method.Name}, don't know how to provide value for parameter {parameter.Name}",
innerEx);
}
public abstract PomonaResponse Process(PomonaContext context);
public abstract bool CanProcess(PomonaContext context);
public abstract bool CanProcess(PomonaContext context);
internal HandlerMethodInvocationException(PomonaContext context, IHandlerMethodInvoker invoker, string message)
: this(context, invoker, message, null)
{
}
public override PomonaResponse Process(PomonaContext context)
{
return this.func(context);
}
public override bool CanProcess(PomonaContext context)
{
return this.condition == null || this.condition(context);
}
internal HandlerMethodInvocationException(PomonaContext context, IHandlerMethodInvoker invoker, string message)
: this(context, invoker, message, null)
{
}
protected override object OnInvoke(object target, PomonaContext context, InvokeState state)
{
state.Form = context.Bind(this.formParameter.TypeSpec);
return(base.OnInvoke(target, context, state));
}
private PomonaResponse ProcessPatch(PomonaContext context, string ifMatch)
{
if (context.Method != HttpMethod.Patch)
return null;
return ValidateResourceEtag(ifMatch, context.Node);
}
public virtual object Invoke(object target, PomonaContext context)
{
return(OnInvoke(target, context, new TInvokeState()));
}
public override bool CanProcess(PomonaContext context)
{
return(true);
}
public override PomonaResponse Process(PomonaContext context)
{
return(InvokeAndWrap(context));
}
protected override object OnInvoke(object target, PomonaContext context, object state)
{
context.Bind(context.Node.ActualResultType, context.Node.Value);
return(base.OnInvoke(target, context, state));
}
public abstract PomonaResponse Process(PomonaContext context);
public override PomonaResponse Process(PomonaContext context)
{
return(this.func(context));
}
public override bool CanProcess(PomonaContext context)
{
object form;
return(context.TryBindAsType(this.formParameter.TypeSpec, out form));
}
public override bool CanProcess(PomonaContext context)
{
return(this.condition == null || this.condition(context));
}
protected override object OnInvoke(object target, PomonaContext context, object state)
{
context.Bind(context.Node.ActualResultType, context.Node.Value);
return base.OnInvoke(target, context, state);
}
