/**
* 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 com.google.wave.api.robot;
import com.google.common.util.concurrent.ListenableFuture;
import java.util.concurrent.Future;
/**
* Interface for sending messages to robots. This utility supports synchronous
* and asynchronous {@code GET} and {@code POST} methods.
*
*/
public interface RobotConnection {
/** Constant for JSON content type. */
static final String JSON_CONTENT_TYPE = "application/json; charset=utf-8";
/**
* Fetches a robot URL using {@code HTTP GET} method.
*
* @param url the robot's URL.
* @return the content of the URL.
*
* @throws RobotConnectionException if there is a problem fetching the URL,
* for example, if the response code is not HTTP OK (200).
*/
String get(String url) throws RobotConnectionException;
/**
* Asynchronously fetches a robot URL using {@code HTTP GET} method.
*
* @param url the robot's URL.
* @return a {@link Future} that represents the content of the URL.
*
* @throws RobotConnectionException if there is a problem fetching the URL,
* for example, if the response code is not HTTP OK (200).
*/
ListenableFuture<String> asyncGet(String url) throws RobotConnectionException;
/**
* Fetches a robot URL using {@code HTTP POST} method.
*
* @param url the robot's URL.
* @param jsonBody the POST body of the request, in JSON.
* @return the content of the URL.
*
* @throws RobotConnectionException if there is a problem fetching the URL,
* for example, if the response code is not HTTP OK (200).
*/
String postJson(String url, String jsonBody) throws RobotConnectionException;
/**
* Asynchronously fetches a robot URL using {@code HTTP POST} method.
*
* @param url the robot's URL.
* @param jsonBody the POST body of the request, in JSON.
* @return a {@link Future} that represents the content of the URL.
*
* @throws RobotConnectionException if there is a problem fetching the URL,
* for example, if the response code is not HTTP OK (200).
*/
ListenableFuture<String> asyncPostJson(String url, String jsonBody)
throws RobotConnectionException;
}