public AutoMapperAdapter(IConfigurationProvider configurationProvider)
{
_mapper = new global::AutoMapper.Mapper(configurationProvider);
}
/// <summary>
/// 增加auto mapper自动化映射,注册了全局单例IMapper
/// </summary>
/// <param name="kernelService"></param>
/// <param name="assemblies">需要注册的程序集</param>
/// <returns></returns>
public static IKernelServices AddAutoMapperByConvention(this IKernelServices kernelService,
IEnumerable <Assembly> assemblies)
{
if (assemblies is null)
{
throw new ArgumentNullException(nameof(assemblies));
}
var configuration = new MapperConfiguration(config =>
{
var method = config.GetType().GetTypeInfo().GetMethod("CreateMap", new Type[] { typeof(MemberList) });
if (method is null || !method.IsGenericMethodDefinition)
{
throw new MissingMethodException(nameof(IMapperConfigurationExpression), "CreateMap");
}
//.Single(r => r.Name == "CreateMap" && r.IsGenericMethodDefinition && r.GetParameters().Length == 1);
foreach (var assembly in assemblies)
{
var iMapFrom1Types = assembly.DefinedTypes.Where(r =>
!r.IsAbstract && r.IsClass && r.IsSubTypeOfGenericType(typeof(IMapFrom <>))).ToList();
var iMapFromTypes = assembly.DefinedTypes.Where(r =>
!r.IsAbstract && r.IsClass && r.IsSubTypeOfGenericType(typeof(IMapFrom <,>))).ToList();
var iMapTo1Types = assembly.DefinedTypes
.Where(r => !r.IsAbstract && r.IsClass && r.IsSubTypeOfGenericType(typeof(IMapTo <>))).ToList();
var iMapToTypes = assembly.DefinedTypes.Where(r =>
!r.IsAbstract && r.IsClass && r.IsSubTypeOfGenericType(typeof(IMapTo <,>))).ToList();
// IMapFrom<TFrom>
foreach (var item in iMapFrom1Types)
{
var interfaces = item.GetAllInterfaces(false);
var fromTypes = interfaces
.Where(r => r.IsGenericType && r.GenericTypeArguments.Length == 1 &&
r.FullName !.StartsWith(typeof(IMapFrom <>).FullName !))
.Select(r => r.GenericTypeArguments[0])
.ToList();
foreach (var fromType in fromTypes)
{
config.CreateMap(fromType, item, MemberList.None);
}
}
// IMapFrom<TFrom, TDest>
foreach (var item in iMapFromTypes)
{
var interfaces = item.GetAllInterfaces(false);
var interfaceTypes = interfaces.Where(r =>
r.IsGenericType && r.GenericTypeArguments.Length == 2 &&
r.FullName !.StartsWith(typeof(IMapFrom <,>).FullName !)).ToHashSet();
if (interfaceTypes.IsNullOrEmpty())
{
continue;
}
foreach (var interfaceType in interfaceTypes)
{
var fromType = interfaceType.GenericTypeArguments[0];
var destType = interfaceType.GenericTypeArguments[1];
var expression = method.MakeGenericMethod(fromType, destType)
.Invoke(config, new object[] { MemberList.None });
if (expression is null)
{
throw new InvalidConstraintException($"[AutoMapper] `CreateMap` method return null");
}
var expressionType = typeof(IMappingExpression <,>).MakeGenericType(fromType, destType);
var configMethod = item.GetMethods().First(r =>
r.Name == "Config" && r.GetParameters().Length == 1 &&
r.GetParameters().First().ParameterType == expressionType);
object?obj;
try
{
obj = Activator.CreateInstance(item);
}
catch
{
throw new InvalidConstraintException(
$"[AutoMapper] can not create instance of {item}, must contains non-argument constructor");
}
if (obj is null)
{
throw new InvalidConstraintException(
$"[AutoMapper] can not create instance of {item}, must contains non-argument constructor");
}
try
{
configMethod.Invoke(obj, new object[] { expression });
using (obj as IDisposable)
{
}
}
catch (Exception e)
{
throw new InvalidConstraintException(
$"[AutoMapper] create mapper {fromType}->{destType} error on type {item}.", e);
}
}
}
// IMapTo < TDest >
foreach (var item in iMapTo1Types)
{
var interfaces = item.GetAllInterfaces(false);
var toTypes = interfaces
.Where(r => r.IsGenericType && r.GenericTypeArguments.Length == 1 &&
r.FullName !.StartsWith(typeof(IMapTo <>).FullName !))
.Select(r => r.GenericTypeArguments[0])
.ToList();
if (toTypes.IsNullOrEmpty())
{
continue;
}
foreach (var toType in toTypes)
{
config.CreateMap(item, toType, MemberList.None);
}
}
// IMapTo<TDest, TSource>
foreach (var item in iMapToTypes)
{
var interfaces = item.GetAllInterfaces(false);
var interfaceTypes = interfaces.Where(r =>
r.IsGenericType && r.GenericTypeArguments.Length == 2 &&
r.FullName !.StartsWith(typeof(IMapTo <,>).FullName !)).ToList();
if (interfaceTypes.IsNullOrEmpty())
{
continue;
}
foreach (var interfaceType in interfaceTypes)
{
var destType = interfaceType.GenericTypeArguments[0];
var fromType = interfaceType.GenericTypeArguments[1];
var expression = method.MakeGenericMethod(fromType, destType)
.Invoke(config, new object[] { MemberList.None });
if (expression is null)
{
throw new InvalidConstraintException($"[AutoMapper] `CreateMap` method return null");
}
var expressionType = typeof(IMappingExpression <,>).MakeGenericType(fromType, destType);
var configMethod = item.GetMethods().First(r =>
r.Name == "Config" && r.GetParameters().Length == 1 &&
r.GetParameters().First().ParameterType == expressionType);
object?obj;
try
{
obj = Activator.CreateInstance(item);
}
catch
{
throw new InvalidConstraintException(
$"[AutoMapper] can not create instance of {item}, must contains non-argument constructor");
}
if (obj is null)
{
throw new InvalidConstraintException(
$"[AutoMapper] can not create instance of {item}, must contains non-argument constructor");
}
try
{
configMethod.Invoke(obj, new object[] { expression });
using (obj as IDisposable)
{
}
}
catch (Exception e)
{
throw new InvalidConstraintException(
$"[AutoMapper] create mapper {fromType}->{destType} error on type {item}.", e);
}
}
}
}
});
configuration.AssertConfigurationIsValid();
var mapper = new global::AutoMapper.Mapper(configuration);
ShashlikAutoMapper.Instance = mapper;
kernelService.Services.AddSingleton <IMapper>(mapper);
return(kernelService);
}
