public static QueryArguments GetArguments(IGraphQlTypePool graphTypePool, MethodInfo methodInfo)
{
var result = new List <QueryArgument>();
var parameters = methodInfo.GetParameters();
foreach (var param in parameters)
{
if (param.ParameterType == typeof(CancellationToken))
{
continue;
}
var argumentNameAttr = param.GetAttribute <ArgumentNameAttribute>();
var argumentDescriptionAttr = param.GetAttribute <ArgumentDescriptionAttribute>();
var isNonNullType = param.GetAttribute <NonNullArgumentAttribute>() != null;
var name = argumentNameAttr == null ? param.Name : argumentNameAttr.Name;
var description = argumentDescriptionAttr == null ? "" : argumentDescriptionAttr.Description;
var graphInputType = isNonNullType
? new NonNullGraphType(graphTypePool.GetInputType(param.ParameterType))
: graphTypePool.GetInputType(param.ParameterType);
var argument = new QueryArgument(graphInputType)
{
Name = name,
Description = description,
DefaultValue = param.HasDefaultValue ? param.DefaultValue : null
};
result.Add(argument);
}
return(new QueryArguments(result));
}
public DynamicInterfaceType(IGraphQlTypePool graphTypePool, Type type)
{
if (!type.IsInterface)
{
throw new InvalidOperationException("The type has to be an interface");
}
// get the name
var nameAttr = type.GetAttribute <NameAttribute>();
var descAttr = type.GetAttribute <DescriptionAttribute>();
// set type name and description
Name = nameAttr?.Name ?? type.Name;
Description = descAttr?.Description ?? DocXmlHelper.DocReader.GetTypeComments(type).Summary;
var properties = type.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.SetProperty | BindingFlags.GetProperty);
foreach (var property in properties)
{
var graphType = graphTypePool.GetGraphType(property.PropertyType);
var descriptionAttr = property.GetAttribute <DescriptionAttribute>();
var fieldNameAttr = property.GetAttribute <NameAttribute>();
var isNonNull = property.GetAttribute <NonNullAttribute>() != null;
var field = new FieldType()
{
Name = fieldNameAttr == null ? property.Name : fieldNameAttr.Name,
Description = descriptionAttr?.Description ?? DocXmlHelper.DocReader.GetMemberComments(property).Summary,
ResolvedType = isNonNull ? new NonNullGraphType(graphType) : graphType
};
AddField(field);
}
}
internal static QueryArguments GetArguments(IGraphQlTypePool graphTypePool, MethodInfo methodInfo)
{
var result = new List <QueryArgument>();
var parameters = methodInfo.GetParameters();
foreach (var param in parameters)
{
if (param.ParameterType == typeof(CancellationToken))
{
continue;
}
if (param.GetAttribute <InjectAttribute>() != null)
{
continue;
}
var argumentNameAttr = param.GetAttribute <NameAttribute>();
var argumentDescriptionAttr = param.GetAttribute <DescriptionAttribute>();
var isNonNullType = param.GetAttribute <NonNullAttribute>() != null;
var name = argumentNameAttr == null ? param.Name : argumentNameAttr.Name;
var description = argumentDescriptionAttr?.Description ??
DocXmlHelper.DocReader.GetMethodComments(methodInfo)?.Parameters.FirstOrDefault(x => x.Name == param.Name).Text;
var graphInputType = isNonNullType
? new NonNullGraphType(graphTypePool.GetInputType(param.ParameterType))
: graphTypePool.GetInputType(param.ParameterType);
var argument = new QueryArgument(graphInputType)
{
Name = name,
Description = description,
DefaultValue = param.HasDefaultValue ? param.DefaultValue : null
};
result.Add(argument);
}
return(new QueryArguments(result));
}
public DynamicUnionGraphType(IGraphQlTypePool pool, Type type)
{
if (!typeof(IUnionGraphType).IsAssignableFrom(type))
{
throw new InvalidOperationException("Invalid Union type");
}
if (IsUnionType(type))
{
// Generate name
var genericArguments = type.GetGenericArguments();
Name = string.Join('_', genericArguments.Select(x => x.Name));
}
else
{
if (!IsUnionType(type.BaseType))
{
throw new InvalidOperationException("Invalid Union type");
}
var nameAttr = type.GetAttribute <NameAttribute>();
var descAttr = type.GetAttribute <DescriptionAttribute>();
Name = nameAttr?.Name ?? type.Name;
Description = descAttr?.Description ?? DocXmlHelper.DocReader.GetTypeComments(type).Summary;
type = type.BaseType;
}
{
var genericArguments = type.GetGenericArguments();
foreach (var genericArgument in genericArguments)
{
AddPossibleType(pool.GetGraphType(genericArgument) as IObjectGraphType);
}
}
}
public DynamicMutationType(IGraphQlTypePool graphTypePool, IEnumerable <Type> types)
{
Name = "Mutations";
Description = "Contains the mutation of the graphql api";
foreach (var type in types)
{
if (!type.IsClass || type.IsInterface)
{
throw new ArgumentException("Invalid subscription type");
}
// work with the methods
var methods = type.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly)
.Where(x => x.GetAttribute <IgnoreAttribute>() == null);
foreach (var method in methods)
{
if (method.Name == nameof(GraphNodeType <object> .OnCreateAsync) ||
method.IsSpecialName)
{
continue;
}
var descriptionAttr = method.GetAttribute <DescriptionAttribute>();
var fieldNameAttr = method.GetAttribute <NameAttribute>();
IGraphType graphType;
IFieldResolver resolver;
if (method.ReturnType.IsGenericType && method.ReturnType.GetGenericTypeDefinition() == typeof(Task <>))
{
var awaitableReturnType = method.ReturnType.GetGenericArguments()[0];
graphType = graphTypePool.GetGraphType(awaitableReturnType);
resolver = new AsyncFieldResolver <object>(async c =>
{
var task = GraphQlHelpers.ExecuteResolverFunction(method, c, type, true);
await((Task)task);
var resultProp = task.GetType().GetProperty(nameof(Task <object> .Result));
var result = resultProp.GetValue(task);
return(result);
});
}
else
{
graphType = graphTypePool.GetGraphType(method.ReturnType);
resolver = new FuncFieldResolver <object>(c => GraphQlHelpers.ExecuteResolverFunction(method, c, type, true));
}
var isNonNull = method.GetAttribute <NonNullAttribute>() != null;
// create field
var field = new FieldType()
{
Arguments = GraphQlHelpers.GetArguments(graphTypePool, method),
Name = fieldNameAttr == null ? method.Name : fieldNameAttr.Name,
Description = descriptionAttr?.Description ?? DocXmlHelper.DocReader.GetMemberComments(method).Summary,
ResolvedType = isNonNull ? new NonNullGraphType(graphType) : graphType,
Resolver = resolver
};
// add the .net type of this field in the metadata
field.Metadata["type"] = method;
var metadatas = Attribute.GetCustomAttributes(type, typeof(MetadataAttribute));
foreach (MetadataAttribute metadata in metadatas)
{
Metadata[metadata.Key] = metadata.Value;
}
AddField(field);
}
}
}
public DynamicSubscriptionType(IGraphQlTypePool graphTypePool, IEnumerable <Type> types)
{
Name = "Subscriptions";
Description = "Contains the subscriptions of the graphql api";
foreach (var type in types)
{
if (!type.IsClass || type.IsInterface)
{
throw new ArgumentException("Invalid subscription type");
}
// Generate fields -----------------------------------------------
// start with the properties
var properties = type
// Get all properties with getters
.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.SetProperty | BindingFlags.GetProperty)
// ignore the ones that have the ignore attribute
.Where(x => x.GetAttribute <IgnoreAttribute>() == null);
foreach (var property in properties)
{
var observableType = property.PropertyType.GetInterfacesIncludingType()
.FirstOrDefault(x => x.IsGenericType && x.GetGenericTypeDefinition().Equals(typeof(IObservable <>)));
if (observableType == null)
{
throw new InvalidOperationException("Subscription property can only return or have type IObservable<>, derive from it or have the IgnoreAttribute");
}
var graphType = graphTypePool.GetGraphType(observableType.GetGenericArguments()[0]);
var descriptionAttr = property.GetAttribute <DescriptionAttribute>();
var fieldNameAttr = property.GetAttribute <NameAttribute>();
var isNonNull = property.GetAttribute <NonNullAttribute>() != null;
var field = new EventStreamFieldType()
{
Name = fieldNameAttr == null ? property.Name : fieldNameAttr.Name,
Description = descriptionAttr?.Description ?? DocXmlHelper.DocReader.GetMemberComments(property).Summary,
ResolvedType = isNonNull ? new NonNullGraphType(graphType) : graphType,
Resolver = new FuncFieldResolver <object>(ResolveObject),
Subscriber = new EventStreamResolver <object>(c => Subscribe(c, property, type))
};
// add the .net type of this field in the metadata
field.Metadata["type"] = property;
var metadatas = Attribute.GetCustomAttributes(type, typeof(MetadataAttribute));
foreach (MetadataAttribute metadata in metadatas)
{
Metadata[metadata.Key] = metadata.Value;
}
AddField(field);
}
// work with the methods
var methods = type.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly)
.Where(x => x.GetAttribute <IgnoreAttribute>() == null);
foreach (var method in methods)
{
if (method.IsSpecialName)
{
continue;
}
var descriptionAttr = method.GetAttribute <DescriptionAttribute>();
var fieldNameAttr = method.GetAttribute <NameAttribute>();
IGraphType graphType;
IEventStreamResolver subscriber = null;
IAsyncEventStreamResolver subscriberAsync = null;
if (method.ReturnType.IsGenericType && method.ReturnType.GetGenericTypeDefinition() == typeof(Task <>))
{
var observable = method.ReturnType.GetGenericArguments()[0];
var observableInterface = observable.GetInterfacesIncludingType()
.FirstOrDefault(x => x.IsGenericType && x.GetGenericTypeDefinition().Equals(typeof(IObservable <>)));
if (observableInterface == null)
{
throw new InvalidOperationException("Subscription property can only return or have type IObservable<>, derive from it or have the IgnoreAttribute");
}
var observableType = observableInterface.GetGenericArguments()[0];
graphType = graphTypePool.GetGraphType(observableType);
subscriberAsync = new AsyncEventStreamResolver <object>(async c =>
{
var task = GraphQlHelpers.ExecuteResolverFunction(method, c, type, true);
await((Task)task);
var resultProp = task.GetType().GetProperty(nameof(Task <object> .Result));
var result = resultProp.GetValue(task);
return(result as IObservable <object>);
});
}
else
{
var observable = method.ReturnType;
var observableInterface = observable.GetInterfacesIncludingType()
.FirstOrDefault(x => x.IsGenericType && x.GetGenericTypeDefinition().Equals(typeof(IObservable <>)));
var observableType = observableInterface.GetGenericArguments()[0];
graphType = graphTypePool.GetGraphType(observableType);
subscriber = new EventStreamResolver <object>(c => GraphQlHelpers.ExecuteResolverFunction(method, c, type, true) as IObservable <object>);
}
var isNonNull = method.GetAttribute <NonNullAttribute>() != null;
// create field
var field = new EventStreamFieldType()
{
Arguments = GraphQlHelpers.GetArguments(graphTypePool, method),
Name = fieldNameAttr == null ? method.Name : fieldNameAttr.Name,
Description = descriptionAttr?.Description ?? DocXmlHelper.DocReader.GetMemberComments(method).Summary,
ResolvedType = isNonNull ? new NonNullGraphType(graphType) : graphType,
Resolver = new FuncFieldResolver <object>(ResolveObject),
Subscriber = subscriber,
AsyncSubscriber = subscriberAsync
};
// add the .net type of this field in the metadata
field.Metadata["type"] = method;
var metadatas = Attribute.GetCustomAttributes(type, typeof(MetadataAttribute));
foreach (MetadataAttribute metadata in metadatas)
{
Metadata[metadata.Key] = metadata.Value;
}
AddField(field);
}
}
}
public SchemaResolver(IAssemblyResolver assemblyResolver, IGraphQlTypePool graphQlTypePool)
{
_assemblyResolver = assemblyResolver;
_graphQlTypePool = graphQlTypePool;
}
public DynamicGraphType(IGraphQlTypePool graphTypePool, Type type)
{
//if (!typeof(GraphNodeType<>).IsAssignableFrom(type))
//{
// throw new ArgumentException("The type is not of type GraphNodeType<>");
//}
// get the name
var nameArgument = type.GetAttribute <TypeNameAttribute>();
var name = nameArgument == null ? type.Name : nameArgument.Name;
// set type name
Name = name;
// Generate fields -----------------------------------------------
// start with the properties
var properties = type
// Get all properties with getters
.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.SetProperty | BindingFlags.GetProperty)
// ignore the ones that have the ignore attribute
.Where(x => x.GetAttribute <IgnoreFieldAttribute>() == null);
foreach (var property in properties)
{
var graphType = graphTypePool.GetGraphType(property.PropertyType);
var descriptionAttr = property.GetAttribute <FieldDescriptionAttribute>();
var fieldNameAttr = property.GetAttribute <FieldNameAttribute>();
var isNonNull = property.GetAttribute <NonNullFieldAttribute>() != null;
// create field
var field = new FieldType()
{
Name = fieldNameAttr == null ? property.Name : fieldNameAttr.Name,
Description = descriptionAttr?.Description,
ResolvedType = isNonNull ? new NonNullGraphType(graphType) : graphType,
Resolver = new FuncFieldResolver <object>(c => property.GetValue(c.Source))
};
AddField(field);
}
// work with the methods
var methods = type.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly)
.Where(x => x.GetAttribute <IgnoreFieldAttribute>() == null);
foreach (var method in methods)
{
if (method.Name == nameof(GraphNodeType <object> .OnCreateAsync) ||
method.IsSpecialName)
{
continue;
}
var descriptionAttr = method.GetAttribute <FieldDescriptionAttribute>();
var fieldNameAttr = method.GetAttribute <FieldNameAttribute>();
IGraphType graphType;
IFieldResolver resolver;
if (method.IsGenericMethod && method.ReturnType.GetGenericTypeDefinition() == typeof(Task <>))
{
var awaitableReturnType = method.ReturnType.GetGenericArguments()[0];
graphType = graphTypePool.GetGraphType(awaitableReturnType);
resolver = new AsyncFieldResolver <object>(c =>
{
var task = ExecuteResolverFunction(method, c);
return(task as Task <object>);
});
}
else
{
graphType = graphTypePool.GetGraphType(method.ReturnType);
resolver = new FuncFieldResolver <object>(c => ExecuteResolverFunction(method, c));
}
var isNonNull = method.GetAttribute <NonNullFieldAttribute>() != null;
// create field
var field = new FieldType()
{
Arguments = GetArguments(graphTypePool, method),
Name = fieldNameAttr == null ? method.Name : fieldNameAttr.Name,
Description = descriptionAttr?.Description,
ResolvedType = isNonNull ? new NonNullGraphType(graphType) : graphType,
Resolver = resolver
};
}
}
public DynamicGraphType(IGraphQlTypePool graphTypePool, Type type, bool isRoot = false)
{
if (!type.IsClass || type.IsInterface)
{
throw new ArgumentException("Invalid object type");
}
// get the name
var nameAttr = type.GetAttribute <NameAttribute>();
var descAttr = type.GetAttribute <DescriptionAttribute>();
// set type name and description
Name = nameAttr?.Name ?? type.Name;
Description = descAttr?.Description ?? DocXmlHelper.DocReader.GetTypeComments(type).Summary;
// set the type metadata
Metadata["type"] = type;
{
// sets the custom metadatas
var metadatas = Attribute.GetCustomAttributes(type, typeof(MetadataAttribute));
foreach (MetadataAttribute metadata in metadatas)
{
Metadata[metadata.Key] = metadata.Value;
}
}
// Check for interfaces
var interfaces = type.GetNotDerivedInterfaces();
// Add all the interface that this implement
foreach (var intrfce in interfaces)
{
AddResolvedInterface(graphTypePool.GetGraphType(intrfce) as IInterfaceGraphType);
}
// Implementing isTypeOf in the case this type implement an interface
IsTypeOf = obj => obj.GetType() == type;
// Generate fields -----------------------------------------------
// start with the properties
var properties = type
// Get all properties with getters
.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.SetProperty | BindingFlags.GetProperty)
// ignore the ones that have the ignore attribute
.Where(x => x.GetAttribute <IgnoreAttribute>() == null);
foreach (var property in properties)
{
var graphType = graphTypePool.GetGraphType(property.PropertyType);
var descriptionAttr = property.GetAttribute <DescriptionAttribute>();
var fieldNameAttr = property.GetAttribute <NameAttribute>();
var isNonNull = property.GetAttribute <NonNullAttribute>() != null;
// create field
var field = new FieldType()
{
Name = fieldNameAttr == null ? property.Name : fieldNameAttr.Name,
Description = descriptionAttr?.Description ?? DocXmlHelper.DocReader.GetMemberComments(property).Summary,
ResolvedType = isNonNull ? new NonNullGraphType(graphType) : graphType,
Resolver = new FuncFieldResolver <object>(c => GraphQlHelpers.GetFinalValue(property.GetValue(GraphQlHelpers.GetSourceInstance(c, type, isRoot)))),
};
// add the .net type of this field in the metadata
field.Metadata["type"] = property;
var metadatas = Attribute.GetCustomAttributes(type, typeof(MetadataAttribute));
foreach (MetadataAttribute metadata in metadatas)
{
Metadata[metadata.Key] = metadata.Value;
}
AddField(field);
}
// work with the methods
var methods = type.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly)
.Where(x => x.GetAttribute <IgnoreAttribute>() == null);
// for each method public
foreach (var method in methods)
{
if (method.Name == nameof(GraphNodeType <object> .OnCreateAsync) ||
method.IsSpecialName)
{
continue;
}
var descriptionAttr = method.GetAttribute <DescriptionAttribute>();
var fieldNameAttr = method.GetAttribute <NameAttribute>();
IGraphType graphType;
IFieldResolver resolver;
if (method.ReturnType.IsGenericType && method.ReturnType.GetGenericTypeDefinition() == typeof(Task <>))
{
var awaitableReturnType = method.ReturnType.GetGenericArguments()[0];
graphType = graphTypePool.GetGraphType(awaitableReturnType);
resolver = new AsyncFieldResolver <object>(async c =>
{
var task = GraphQlHelpers.ExecuteResolverFunction(method, c, type, isRoot);
await((Task)task);
var resultProp = task.GetType().GetProperty(nameof(Task <object> .Result));
var result = resultProp.GetValue(task);
return(result);
});
}
else
{
graphType = graphTypePool.GetGraphType(method.ReturnType);
resolver = new FuncFieldResolver <object>(c => GraphQlHelpers.ExecuteResolverFunction(method, c, type, isRoot));
}
var isNonNull = method.GetAttribute <NonNullAttribute>() != null;
// create field
var field = new FieldType()
{
Arguments = GraphQlHelpers.GetArguments(graphTypePool, method),
Name = fieldNameAttr == null ? method.Name : fieldNameAttr.Name,
Description = descriptionAttr?.Description ?? DocXmlHelper.DocReader.GetMemberComments(method).Summary,
ResolvedType = isNonNull ? new NonNullGraphType(graphType) : graphType,
Resolver = resolver
};
// add the .net type of this field in the metadata
field.Metadata["type"] = method;
var metadatas = Attribute.GetCustomAttributes(type, typeof(MetadataAttribute));
foreach (MetadataAttribute metadata in metadatas)
{
Metadata[metadata.Key] = metadata.Value;
}
AddField(field);
}
}
