public Task UnsubscribeAsync()
{
_logger.LogDebug("Subscription: {subscriptionId} unsubscribing", Id);
_unsubscribe.Dispose();
return(_writer.SendAsync(new OperationMessage
{
Type = MessageType.GQL_COMPLETE,
Id = Id
}));
}
private async Task <Subscription> ExecuteAsync(
string id,
OperationMessagePayload payload,
IWriterPipeline writer)
{
_logger.LogDebug("Executing operation: {operationName} query: {query}",
payload.OperationName,
payload.Query);
var result = await _executer.ExecuteAsync(
payload.OperationName,
payload.Query,
payload.Variables);
if (result.Errors != null && result.Errors.Any())
{
_logger.LogError("Execution errors: {errors}", ResultHelper.GetErrorString(result));
await writer.SendAsync(new OperationMessage
{
Type = MessageType.GQL_ERROR,
Id = id,
Payload = JObject.FromObject(result)
});
return(null);
}
// is sub
if (result is SubscriptionExecutionResult subscriptionExecutionResult)
{
using (_logger.BeginScope("Subscribing to: {subscriptionId}", id))
{
if (subscriptionExecutionResult.Streams?.Values.SingleOrDefault() == null)
{
_logger.LogError("Cannot subscribe as no result stream available");
await writer.SendAsync(new OperationMessage
{
Type = MessageType.GQL_ERROR,
Id = id,
Payload = JObject.FromObject(result)
});
return(null);
}
_logger.LogInformation("Creating subscription");
return(new Subscription(
id,
payload,
subscriptionExecutionResult,
writer,
sub => _subscriptions.TryRemove(id, out _),
_loggerFactory.CreateLogger <Subscription>()));
}
}
//is query or mutation
await writer.SendAsync(new OperationMessage
{
Type = MessageType.GQL_DATA,
Id = id,
Payload = JObject.FromObject(result)
});
await writer.SendAsync(new OperationMessage
{
Type = MessageType.GQL_COMPLETE,
Id = id
});
return(null);
}