/interpreter/tags/at2dist091109/src/edu/vub/at/actors/net/cmd/CMDJoinServices.java
Java | 73 lines | 19 code | 10 blank | 44 comment | 0 complexity | 2219ea04013a3a4a133e3c5504ee87e6 MD5 | raw file
1/** 2 * AmbientTalk/2 Project 3 * CMDJoinServices.java created on 22-feb-2007 at 15:51:02 4 * (c) Programming Technology Lab, 2006 - 2007 5 * Authors: Tom Van Cutsem & Stijn Mostinckx 6 * 7 * Permission is hereby granted, free of charge, to any person 8 * obtaining a copy of this software and associated documentation 9 * files (the "Software"), to deal in the Software without 10 * restriction, including without limitation the rights to use, 11 * copy, modify, merge, publish, distribute, sublicense, and/or 12 * sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following 14 * conditions: 15 * 16 * The above copyright notice and this permission notice shall be 17 * included in all copies or substantial portions of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 21 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 22 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 23 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 24 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 25 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 26 * OTHER DEALINGS IN THE SOFTWARE. 27 */ 28package edu.vub.at.actors.net.cmd; 29 30import edu.vub.at.actors.natives.ELVirtualMachine; 31import edu.vub.at.actors.net.comm.Address; 32import edu.vub.at.actors.net.comm.CommunicationBus; 33import edu.vub.util.MultiMap; 34 35 36/** 37 * A CMDJoinServices message is sent asynchronously as a reply to: 38 * - an initial discovery request from a VM 39 * - a subsequent discovery request when a VM subscribes to a new service 40 * SENDER: the VM that provides some service objects 41 * RECEIVER: the VM that previously sent a request for required services 42 * MODE: ASYNCHRONOUS, UNICAST 43 * PROPERTIES: a map of subscription topic to published objects 44 * REPLY: none 45 * 46 * @author tvcutsem 47 */ 48 49public class CMDJoinServices extends VMCommand { 50 51 private static final long serialVersionUID = -531880533782855168L; 52 53 /** 54 * A map from serialized ATTypeTag topics to Sets of serialized ATObjects that 55 * provide the serialized topic 56 */ 57 private final MultiMap providedServices_; 58 59 public CMDJoinServices(MultiMap providedServices) { 60 super("joinServices"); 61 providedServices_ = providedServices; 62 } 63 64 public void send(CommunicationBus dispatcher, Address recipientVM) { 65 dispatcher.sendAsyncUnicast(this, recipientVM); 66 } 67 68 public void uponReceiptBy(ELVirtualMachine remoteHost, Address senderAddress) { 69 // notify the local subscribers of the provided services via the local discovery actor 70 remoteHost.discoveryActor_.event_batchRemotePublications(providedServices_); 71 } 72 73}