public static async Task <TResult> ExecuteCommandAsync <TCommand, TResult>(
this IDocumentStorageInterceptor interceptor,
TCommand command,
Func <TCommand, Task <TResult> > commandAction,
Func <TCommand, DocumentStorageWriteResult <TResult> > onBeforeCommandAction,
Action <TCommand, DocumentStorageWriteResult <TResult>, Exception> onAfterCommandAction)
{
TResult result;
if (interceptor == null)
{
result = await commandAction(command);
}
else
{
var writeResult = onBeforeCommandAction(command);
if (writeResult == null)
{
writeResult = new DocumentStorageWriteResult <TResult>();
}
else if (!writeResult.Success)
{
throw new DocumentStorageWriteException(interceptor.DocumentType, writeResult);
}
try
{
result = await commandAction(command);
onAfterCommandAction(command, writeResult, null);
}
catch (Exception exception)
{
onAfterCommandAction(command, writeResult, exception);
throw;
}
if (!writeResult.Success)
{
throw new DocumentStorageWriteException(interceptor.DocumentType, writeResult);
}
}
return(result);
}
public static Task ExecuteCommandAsync <TCommand>(
this IDocumentStorageInterceptor interceptor,
TCommand command,
Func <TCommand, Task> commandAction,
Func <TCommand, DocumentStorageWriteResult <object> > onBeforeCommandAction,
Action <TCommand, DocumentStorageWriteResult <object>, Exception> onAfterCommandAction)
{
return(ExecuteCommandAsync(
interceptor,
command,
async c =>
{
await commandAction(c);
return null;
},
onBeforeCommandAction,
onAfterCommandAction));
}
public static void ExecuteCommand <TCommand>(
this IDocumentStorageInterceptor interceptor,
TCommand command,
Action <TCommand> commandAction,
Func <TCommand, DocumentStorageWriteResult <object> > onBeforeCommandAction,
Action <TCommand, DocumentStorageWriteResult <object>, Exception> onAfterCommandAction)
{
ExecuteCommand(
interceptor,
command,
c =>
{
commandAction(c);
return(null);
},
onBeforeCommandAction,
onAfterCommandAction);
}
