/*
* TeleStax, Open Source Cloud Communications Copyright 2012.
* and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.mobicents.protocols.ss7.m3ua.impl;
import javolution.xml.XMLFormat;
import javolution.xml.XMLSerializable;
import javolution.xml.stream.XMLStreamException;
import org.mobicents.protocols.ss7.m3ua.As;
import org.mobicents.protocols.ss7.m3ua.ExchangeType;
import org.mobicents.protocols.ss7.m3ua.Functionality;
import org.mobicents.protocols.ss7.m3ua.IPSPType;
import org.mobicents.protocols.ss7.m3ua.RouteAs;
import org.mobicents.protocols.ss7.m3ua.impl.fsm.FSM;
import org.mobicents.protocols.ss7.m3ua.impl.parameter.TrafficModeTypeImpl;
import org.mobicents.protocols.ss7.m3ua.parameter.TrafficModeType;
/**
* @author amit bhayani
*
*/
public class RouteAsImpl implements XMLSerializable, RouteAs {
private static final String TRAFFIC_MODE_TYPE = "trafficModeType";
private static final String AS_ARRAY = "as";
private M3UAManagementImpl m3uaManagement;
private As[] asArray = null;
private TrafficModeType trafficModeType = new TrafficModeTypeImpl(TrafficModeType.Loadshare);
// After reading comma separted value from xml file, its stored here. And them M3USManagement will do the necessary setup.
private String asArraytemp = null;
public RouteAsImpl() {
// TODO Auto-generated constructor stub
}
public TrafficModeType getTrafficModeType() {
return trafficModeType;
}
public void setTrafficModeType(TrafficModeType trafficModeType) {
this.trafficModeType = trafficModeType;
}
protected void setM3uaManagement(M3UAManagementImpl m3uaManagement) {
this.m3uaManagement = m3uaManagement;
}
protected String getAsArraytemp() {
return asArraytemp;
}
protected void addRoute(int dpc, int opc, int si, AsImpl asImpl, int traffmode) throws Exception {
if (this.trafficModeType.getMode() != traffmode) {
throw new Exception(
String.format(
"Route already setup for dpc=%d opc=%d si=%d with trafficModeType=%d. Cannot assign new trafficModeType=%d",
dpc, opc, si, this.trafficModeType.getMode(), traffmode));
}
if (asArray != null) {
// check is this As is already added
for (int count = 0; count < asArray.length; count++) {
AsImpl asTemp = (AsImpl) asArray[count];
if (asTemp != null && asImpl.equals(asTemp)) {
throw new Exception(String.format("As=%s already added for dpc=%d opc=%d si=%d", asImpl.getName(), dpc,
opc, si));
}
}
} else {
asArray = new AsImpl[this.m3uaManagement.maxAsForRoute];
}
// Add to first empty slot
for (int count = 0; count < asArray.length; count++) {
if (asArray[count] == null) {
asArray[count] = asImpl;
this.m3uaManagement.store();
return;
}
}
throw new Exception(String.format("dpc=%d opc=%d si=%d combination already has maximum possible As", dpc, opc, si));
}
protected void removeRoute(int dpc, int opc, int si, AsImpl asImpl) throws Exception {
for (int count = 0; count < asArray.length; count++) {
AsImpl asTemp = (AsImpl) asArray[count];
if (asTemp != null && asImpl.equals(asTemp)) {
asArray[count] = null;
return;
}
}
throw new Exception(String.format("No AS=%s configured for dpc=%d opc=%d si=%d", asImpl.getName(), dpc, opc, si));
}
protected AsImpl getAsForRoute(int count) {
if (this.trafficModeType.getMode() == TrafficModeType.Override) {
// For Override we always try with first available AS
count = 0;
}
// First attempt
AsImpl asImpl = (AsImpl) asArray[count];
if (this.isAsActive(asImpl)) {
return asImpl;
}
// Second recursive Attempt
for (int i = 0; i < this.m3uaManagement.getMaxAsForRoute(); i++) {
count = count + 1;
if (count == this.m3uaManagement.getMaxAsForRoute()) {
// If count reaches same value as total As available for route,
// restart from 0
count = 0;
}
asImpl = (AsImpl) asArray[count];
if (this.isAsActive(asImpl)) {
return asImpl;
}
}
return null;
}
private boolean isAsActive(AsImpl asImpl) {
FSM fsm = null;
if (asImpl != null) {
if (asImpl.getFunctionality() == Functionality.AS
|| (asImpl.getFunctionality() == Functionality.SGW && asImpl.getExchangeType() == ExchangeType.DE)
|| (asImpl.getFunctionality() == Functionality.IPSP && asImpl.getExchangeType() == ExchangeType.DE)
|| (asImpl.getFunctionality() == Functionality.IPSP && asImpl.getExchangeType() == ExchangeType.SE && asImpl
.getIpspType() == IPSPType.CLIENT)) {
fsm = asImpl.getPeerFSM();
} else {
fsm = asImpl.getLocalFSM();
}
AsState asState = AsState.getState(fsm.getState().getName());
return (asState == AsState.ACTIVE);
}// if (as != null)
return false;
}
protected boolean hasAs(AsImpl asImpl) {
for (int count = 0; count < asArray.length; count++) {
AsImpl asTemp = (AsImpl) asArray[count];
if (asTemp != null && asTemp.equals(asImpl)) {
return true;
}
}
return false;
}
protected boolean hasAs() {
for (int count = 0; count < asArray.length; count++) {
AsImpl asTemp = (AsImpl) asArray[count];
if (asTemp != null){
return true;
}
}
return false;
}
public As[] getAsArray() {
return this.asArray;
}
/**
* XML Serialization/Deserialization
*/
protected static final XMLFormat<RouteAsImpl> AS_XML = new XMLFormat<RouteAsImpl>(RouteAsImpl.class) {
@Override
public void read(javolution.xml.XMLFormat.InputElement xml, RouteAsImpl routeAs) throws XMLStreamException {
int trafficMode = xml.getAttribute(TRAFFIC_MODE_TYPE, TrafficModeType.Loadshare);
routeAs.trafficModeType = new TrafficModeTypeImpl(trafficMode);
routeAs.asArraytemp = xml.getAttribute(AS_ARRAY, "");
}
@Override
public void write(RouteAsImpl routeAs, javolution.xml.XMLFormat.OutputElement xml) throws XMLStreamException {
xml.setAttribute(TRAFFIC_MODE_TYPE, routeAs.trafficModeType.getMode());
As[] asList = routeAs.asArray;
StringBuffer sb = new StringBuffer();
for (int count = 0; count < asList.length; count++) {
AsImpl asImpl = (AsImpl) asList[count];
if (asImpl != null) {
sb.append(asImpl.getName()).append(",");
}
}
String value = sb.toString();
if (!value.equals("")) {
// remove last comma
value = value.substring(0, (value.length() - 1));
}
xml.setAttribute(AS_ARRAY, value);
}
};
protected void reset() {
AsImpl[] asList = new AsImpl[this.m3uaManagement.getMaxAsForRoute()];
if (asArraytemp != null && !asArraytemp.equals("")) {
String[] asNames = asArraytemp.split(",");
for (int count = 0; count < asList.length && count < asNames.length; count++) {
String asName = asNames[count];
As as = this.m3uaManagement.getAs(asName);
if (as == null) {
// TODO add warning
continue;
}
asList[count] = (AsImpl) as;
}
}// if (value != null && !value.equals(""))
this.asArray = asList;
}
}