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The Camel API
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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.camel;

import java.util.List;
import java.util.Map;

import org.apache.camel.spi.RouteContext;

/**
 * A Route
 * defines the processing used on an inbound message exchange
 * from a specific {@link org.apache.camel.Endpoint} within a {@link org.apache.camel.CamelContext}.
 * 
 * Use the API from {@link org.apache.camel.CamelContext} to control the lifecycle of a route,
 * such as starting and stopping using the {@link org.apache.camel.spi.RouteController#startRoute(String)}
 * and {@link org.apache.camel.spi.RouteController#stopRoute(String)} methods.
 */
public interface Route extends EndpointAware {

    String ID_PROPERTY = "id";
    String CUSTOM_ID_PROPERTY = "customId";
    String PARENT_PROPERTY = "parent";
    String GROUP_PROPERTY = "group";
    String REST_PROPERTY = "rest";
    String DESCRIPTION_PROPERTY = "description";

    /**
     * Gets the route id
     *
     * @return the route id
     */
    String getId();

    /**
     * Gets the route group
     *
     * @return the route group
     */
    String getGroup();

    /**
     * Gets the uptime in a human readable format
     *
     * @return the uptime in days/hours/minutes
     */
    String getUptime();

    /**
     * Gets the uptime in milliseconds
     *
     * @return the uptime in milliseconds
     */
    long getUptimeMillis();

    /**
     * Gets the inbound {@link Consumer}
     *
     * @return the inbound consumer
     */
    Consumer getConsumer();

    /**
     * Gets the {@link Processor}
     *
     * @return the processor
     */
    Processor getProcessor();

    /**
     * Whether or not the route supports suspension (suspend and resume)
     *
     * @return true if this route supports suspension
     */
    boolean supportsSuspension();

    /**
     * This property map is used to associate information about the route.
     *
     * @return properties
     */
    Map getProperties();

    /**
     * Gets the route description (if any has been configured).
     * 
     * The description is configured using the {@link #DESCRIPTION_PROPERTY} as key in the {@link #getProperties()}.
     *
     * @return the description, or null if no description has been configured.
     */
    String getDescription();

    /**
     * Gets the route context
     *
     * @return the route context
     */
    RouteContext getRouteContext();

    /**
     * Gets the camel context
     *
     * @return the camel context
     */
    CamelContext getCamelContext();

    /**
     * A strategy callback allowing special initialization when services are starting.
     *
     * @param services the service
     * @throws Exception is thrown in case of error
     */
    void onStartingServices(List services) throws Exception;

    /**
     * Returns the services for this particular route
     *
     * @return the services
     */
    List getServices();

    /**
     * Adds a service to this route
     *
     * @param service the service
     */
    void addService(Service service);

    /**
     * Returns a navigator to navigate this route by navigating all the {@link Processor}s.
     *
     * @return a navigator for {@link Processor}.
     */
    Navigate navigate();

    /**
     * Returns a list of all the {@link Processor}s from this route that has id's matching the pattern
     *
     * @param pattern the pattern to match by ids
     * @return a list of {@link Processor}, is never null.
     */
    List filter(String pattern);

    /**
     * Callback preparing the route to be started, by warming up the route.
     */
    void warmUp();

}