public override string CollectTypes(TypeCollectionContext context)
{
if (!string.IsNullOrWhiteSpace(_remoteLocation) && !string.IsNullOrWhiteSpace(_name))
{
// get remote server information
// if we haven't fetched the remote types for this remote:
if (!RemoteServerSchemas.TryGetValue(_remoteLocation, out var schema))
{
throw new Exception($"Schema not already loaded for remote {_remoteLocation}");
}
// get type
if (!TryGetFieldTypeFromRemoteSchema(schema, _name, out var type))
{
// if no type found: fail
// TODO: fail better
throw new Exception($"Failed to find type '{_name}' in remote '{_remoteLocation}' schema");
}
Name = $"{_remoteLocation}.{_name}";
if (!_hasAddedFields)
{
var fields = GetFieldsForFieldType(_remoteLocation, type).Where(f => f != null).ToList();
foreach (var field in fields)
{
AddField(field);
}
_hasAddedFields = true;
}
}
return(base.CollectTypes(context));
}
private static Introspection.Schema FetchRemoteServerSchema(string remote, RemoteSchemaFetcher remoteSchemaFetcher)
{
// lock types mutex
lock (FetchRemoteServerSchemaMutex)
{
// did someone else fetch it while we were waiting?
if (!RemoteServerSchemas.TryGetValue(remote, out var schema))
{
// fetch remote type information
if (!TryGetRemoteSchema(remote, remoteSchemaFetcher, out schema))
{
// if it fails: fail
// TODO: fail better
throw new Exception("Failed to get remote schema");
}
// if it succeeds: save type information for all types
RemoteServerSchemas.AddOrUpdate(remote, schema, (key, old) => schema);
}
return(schema);
}
}