private static void ValidateProtocolProvider(IProtocolProvider provider)
{
if (provider == null)
{
throw new InvalidProtocolProviderException("External protocol provider cannot be null");
}
if (string.IsNullOrWhiteSpace(provider.ProtocolIdentifier))
{
throw new InvalidProtocolProviderException($"Invalid protocol provider '{provider.GetType().RESTarTypeName()}'. " +
"ProtocolIdentifier cannot be null or whitespace");
}
if (!Regex.IsMatch(provider.ProtocolIdentifier, "^[a-zA-Z]+$"))
{
throw new InvalidProtocolProviderException($"Invalid protocol provider '{provider.GetType().RESTarTypeName()}'. " +
"ProtocolIdentifier can only contain letters a-z and A-Z");
}
if (provider.ExternalContentTypeProviderSettings == ExternalContentTypeProviderSettings.DontAllow)
{
var contentProviders = provider.GetContentTypeProviders()?.ToList();
if (contentProviders?.Any() != true)
{
throw new InvalidProtocolProviderException($"Invalid protocol provider '{provider.GetType().RESTarTypeName()}'. " +
"The protocol provider allows no external content type providers " +
"and does not provide any content type providers of its own.");
}
if (contentProviders.All(p => !p.CanRead) && contentProviders.All(p => !p.CanWrite))
{
throw new InvalidProtocolProviderException($"Invalid protocol provider '{provider.GetType().RESTarTypeName()}'. " +
"The protocol provider allows no external content type providers " +
"and none of the provided content type providers can read or write.");
}
}
}
private static CachedProtocolProvider GetCachedProtocolProvider(IProtocolProvider provider)
{
var cProvider = new CachedProtocolProvider(provider);
var contentTypeProviders = provider.GetContentTypeProviders()?.ToList();
contentTypeProviders?.ForEach(contentTypeProvider =>
{
if (contentTypeProvider.CanRead)
{
contentTypeProvider.MatchStrings?.ForEach(mimeType => cProvider.InputMimeBindings[mimeType] = contentTypeProvider);
}
if (contentTypeProvider.CanWrite)
{
contentTypeProvider.MatchStrings?.ForEach(mimeType => cProvider.OutputMimeBindings[mimeType] = contentTypeProvider);
}
});
switch (provider.ExternalContentTypeProviderSettings)
{
case ExternalContentTypeProviderSettings.AllowAll:
ContentTypeController.InputContentTypeProviders.Where(p => !cProvider.InputMimeBindings.ContainsKey(p.Key))
.ForEach(cProvider.InputMimeBindings.Add);
ContentTypeController.OutputContentTypeProviders.Where(p => !cProvider.OutputMimeBindings.ContainsKey(p.Key))
.ForEach(cProvider.OutputMimeBindings.Add);
break;
case ExternalContentTypeProviderSettings.AllowInput:
ContentTypeController.InputContentTypeProviders.Where(p => !cProvider.InputMimeBindings.ContainsKey(p.Key))
.ForEach(cProvider.InputMimeBindings.Add);
break;
case ExternalContentTypeProviderSettings.AllowOutput:
ContentTypeController.OutputContentTypeProviders.Where(p => !cProvider.OutputMimeBindings.ContainsKey(p.Key))
.ForEach(cProvider.OutputMimeBindings.Add);
break;
}
return(cProvider);
}