public async Task <ISchemaFeatures> GetSchemaFeaturesAsync(
HttpClient client,
CancellationToken cancellationToken = default)
{
if (client is null)
{
throw new ArgumentNullException(nameof(client));
}
HttpQueryRequest request = IntrospectionQueryHelper.CreateFeatureQuery();
IntrospectionResult result = await ExecuteIntrospectionAsync(
client, request, cancellationToken)
.ConfigureAwait(false);
EnsureNoGraphQLErrors(result);
return(SchemaFeatures.FromIntrospectionResult(result));
}
internal static SchemaFeatures FromIntrospectionResult(
IntrospectionResult result)
{
var features = new SchemaFeatures();
FullType directive = result.Data.Schema.Types.First(t =>
t.Name.Equals(_directiveName, StringComparison.Ordinal));
features.HasRepeatableDirectives = directive.Fields.Any(t =>
t.Name.Equals(_isRepeatable, StringComparison.Ordinal));
features.HasDirectiveLocations = directive.Fields.Any(t =>
t.Name.Equals(_locations, StringComparison.Ordinal));
FullType schema = result.Data.Schema.Types.First(t =>
t.Name.Equals(_schemaName, StringComparison.Ordinal));
features.HasSubscriptionSupport = schema.Fields.Any(t =>
t.Name.Equals(_subscriptionType, StringComparison.Ordinal));
return(features);
}