net.kuujo.vertigo.instance.OutputConnection Maven / Gradle / Ivy
/*
* Copyright 2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.kuujo.vertigo.instance;
import io.vertx.core.Handler;
import io.vertx.core.eventbus.Message;
/**
* Output connection.
*
* Output connections represent a direct connection between two partitions
* of separate components. Each output connection points to a single
* input connection which receives messages from this connection and this
* connection only.
*
* When the connection is opened, it will attempt to connect to the
* corresponding input connection (the other side of the connection) by
* periodically sending connect messages to the input connection.
* Once the input connection replies to the output connection, the connection
* is opened.
*
* The output connection sends messages for the connection and on behalf
* of any groups created on the connection. Each message that is sent
* by the output connection is tagged with a monotonically increasing
* number. The connection listens for messages indicating that a message
* was received out of order. If a message was received out of order, the
* output connection will begin resending messages from the last known
* correct message.
*
* @author Jordan Halterman
*/
public interface OutputConnection extends Connection, ControllableOutput, T>, Handler> {
}