/protocols/ss7/m3ua/impl/src/main/java/org/mobicents/protocols/ss7/m3ua/impl/sg/RemAsTransActToPendRemAspDwn.java
Java | 155 lines | 84 code | 30 blank | 41 comment | 24 complexity | c213ae1a5cbe578a339de8a73e254fc8 MD5 | raw file
1/* 2 * JBoss, Home of Professional Open Source 3 * Copyright 2011, Red Hat, Inc. and individual contributors 4 * by the @authors tag. See the copyright.txt in the distribution for a 5 * full listing of individual contributors. 6 * 7 * This is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU Lesser General Public License as 9 * published by the Free Software Foundation; either version 2.1 of 10 * the License, or (at your option) any later version. 11 * 12 * This software is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this software; if not, write to the Free 19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 21 */ 22 23package org.mobicents.protocols.ss7.m3ua.impl.sg; 24 25import javolution.util.FastList; 26 27import org.apache.log4j.Logger; 28import org.mobicents.protocols.ss7.m3ua.impl.Asp; 29import org.mobicents.protocols.ss7.m3ua.impl.AspState; 30import org.mobicents.protocols.ss7.m3ua.impl.fsm.FSM; 31import org.mobicents.protocols.ss7.m3ua.impl.fsm.State; 32import org.mobicents.protocols.ss7.m3ua.impl.fsm.TransitionHandler; 33import org.mobicents.protocols.ss7.m3ua.message.MessageClass; 34import org.mobicents.protocols.ss7.m3ua.message.MessageType; 35import org.mobicents.protocols.ss7.m3ua.message.mgmt.Notify; 36import org.mobicents.protocols.ss7.m3ua.parameter.Status; 37import org.mobicents.protocols.ss7.m3ua.parameter.TrafficModeType; 38 39/** 40 * 41 * @author amit bhayani 42 * 43 */ 44public class RemAsTransActToPendRemAspDwn implements TransitionHandler { 45 46 private static final Logger logger = Logger.getLogger(RemAsTransActToPendRemAspDwn.class); 47 48 private RemAsImpl as = null; 49 private FSM fsm; 50 51 private int lbCount = 0; 52 53 public RemAsTransActToPendRemAspDwn(RemAsImpl as, FSM fsm) { 54 this.as = as; 55 this.fsm = fsm; 56 } 57 58 public boolean process(State state) { 59 try { 60 RemAspImpl remAsp = (RemAspImpl) this.fsm.getAttribute(RemAsImpl.ATTRIBUTE_ASP); 61 62 if (this.as.getTrafficModeType().getMode() == TrafficModeType.Broadcast) { 63 // We don't support this 64 return false; 65 66 } 67 68 if (this.as.getTrafficModeType().getMode() == TrafficModeType.Loadshare) { 69 this.lbCount = 0; 70 71 for (FastList.Node<Asp> n = this.as.getAspList().head(), end = this.as.getAspList() 72 .tail(); (n = n.getNext()) != end;) { 73 RemAspImpl remAspImpl = (RemAspImpl) n.getValue(); 74 if (remAspImpl.getState() == AspState.ACTIVE) { 75 this.lbCount++; 76 } 77 }// for 78 79 // TODO : yet not sure. May be the communication died with this 80 // ASP who is causing this Transition; so the state will still 81 // be ACTIVE for it 82 if (remAsp.getState() == AspState.ACTIVE) { 83 this.lbCount--; 84 } 85 86 if (this.lbCount >= this.as.getMinAspActiveForLb()) { 87 // we still have more ASP's ACTIVE for lb. Don't change 88 // state 89 return false; 90 } 91 92 if (this.lbCount > 0) { 93 // In any case if we have at least one ASP that can take 94 // care of traffic, don't change state 95 96 // But we are below threshold. Send "Ins. ASPs" to INACTIVE 97 // ASP's but not to ASP that caused this transition as it is 98 // already DOWN 99 for (FastList.Node<Asp> n = this.as.getAspList().head(), end = this.as 100 .getAspList().tail(); (n = n.getNext()) != end;) { 101 RemAspImpl remAspTemp = (RemAspImpl) n.getValue(); 102 103 // TODO : needed? The state should be changed before 104 // signalling AS transition 105 if (remAspTemp.getName().compareTo(remAsp.getName()) == 0) { 106 continue; 107 } 108 if (remAspTemp.getState() == AspState.INACTIVE) { 109 Notify notify = this.createNotify(remAsp, Status.STATUS_Other, 110 Status.INFO_Insufficient_ASP_Resources_Active); 111 remAspTemp.getAspFactory().write(notify); 112 } 113 } 114 115 return false; 116 } 117 118 }//If Loadshare 119 120 // We have reached here means AS is transitioning to be PENDING. 121 // Send new AS STATUS to all INACTIVE APS's 122 123 for (FastList.Node<Asp> n = this.as.getAspList().head(), end = this.as.getAspList() 124 .tail(); (n = n.getNext()) != end;) { 125 remAsp = (RemAspImpl) n.getValue(); 126 if (remAsp.getState() == AspState.INACTIVE) { 127 Notify notify = this.createNotify(remAsp, Status.STATUS_AS_State_Change, Status.INFO_AS_PENDING); 128 remAsp.getAspFactory().write(notify); 129 } 130 } 131 132 } catch (Exception e) { 133 logger.error(String.format("Error while translating Rem AS to PENDING. %s", this.fsm.toString()), e); 134 } 135 136 return true; 137 } 138 139 private Notify createNotify(RemAspImpl remAsp, int type, int info) { 140 Notify msg = (Notify) this.as.getM3UAProvider().getMessageFactory().createMessage(MessageClass.MANAGEMENT, 141 MessageType.NOTIFY); 142 143 Status status = this.as.getM3UAProvider().getParameterFactory().createStatus(type, info); 144 msg.setStatus(status); 145 146 if (remAsp.getASPIdentifier() != null) { 147 msg.setASPIdentifier(remAsp.getASPIdentifier()); 148 } 149 150 msg.setRoutingContext(this.as.getRoutingContext()); 151 152 return msg; 153 } 154 155}