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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed 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.onosproject.pcepio.protocol.ver1;
import java.util.LinkedList;
import java.util.ListIterator;
import org.jboss.netty.buffer.ChannelBuffer;
import org.onosproject.pcepio.exceptions.PcepParseException;
import org.onosproject.pcepio.protocol.PcepError;
import org.onosproject.pcepio.protocol.PcepErrorInfo;
import org.onosproject.pcepio.protocol.PcepErrorObject;
import org.onosproject.pcepio.protocol.PcepRPObject;
import org.onosproject.pcepio.protocol.PcepTEObject;
import org.onosproject.pcepio.types.PcepObjectHeader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.MoreObjects;
/**
* Provides PCEP Error Info.
* Reference :PCEP Extension for Transporting TE Data draft-dhodylee-pce-pcep-te-data-extn-02.
*/
public class PcepErrorInfoVer1 implements PcepErrorInfo {
protected static final Logger log = LoggerFactory.getLogger(PcepErrorInfoVer1.class);
//Error list is optional
private LinkedList<PcepError> errList;
/**
* Constructor to add PCEP error object to the list.
*
* @param llRPObjList list of PCEP RP object
* @param llTEObjList list of PCEP TE object
* @param llErrObjList list of PCEP error object
*/
public PcepErrorInfoVer1(LinkedList<PcepRPObject> llRPObjList, LinkedList<PcepTEObject> llTEObjList,
LinkedList<PcepErrorObject> llErrObjList) {
this.errList = new LinkedList<>();
if ((llErrObjList != null) && (!llErrObjList.isEmpty())) {
this.errList.add(new PcepErrorVer1(llRPObjList, llTEObjList, llErrObjList));
}
}
/**
* Constructor to initialize error info.
*
* @param errll linked list or pcep error
*/
public PcepErrorInfoVer1(LinkedList<PcepError> errll) {
this.errList = errll;
}
@Override
public boolean isErrorInfoPresent() {
return !this.errList.isEmpty();
}
@Override
public void read(ChannelBuffer cb) throws PcepParseException {
PcepObjectHeader tempObjHeader;
while (0 < cb.readableBytes()) {
cb.markReaderIndex();
tempObjHeader = PcepObjectHeader.read(cb);
cb.resetReaderIndex();
byte yObjClass = tempObjHeader.getObjClass();
if ((yObjClass != PcepRPObjectVer1.RP_OBJ_CLASS) && (yObjClass != PcepTEObjectVer1.TE_OBJ_CLASS)
&& (yObjClass != PcepErrorObjectVer1.ERROR_OBJ_CLASS)) {
throw new PcepParseException("Unknown Object is present in PCEP-ERROR. Object Class: " + yObjClass);
}
this.errList.add(PcepErrorVer1.read(cb));
}
}
@Override
public void write(ChannelBuffer cb) throws PcepParseException {
//write <error>
ListIterator<PcepError> listIterator = errList.listIterator();
while (listIterator.hasNext()) {
PcepError pcepError = listIterator.next();
//RP Object list is optional
LinkedList<PcepRPObject> llRPObjList = pcepError.getRPObjList();
if (llRPObjList != null) {
ListIterator<PcepRPObject> rpListIterator = llRPObjList.listIterator();
while (rpListIterator.hasNext()) {
rpListIterator.next().write(cb);
}
}
//TE Object list is optional
LinkedList<PcepTEObject> llTEObjList = pcepError.getTEObjList();
if (llTEObjList != null) {
ListIterator<PcepTEObject> teListIterator = llTEObjList.listIterator();
while (teListIterator.hasNext()) {
teListIterator.next().write(cb);
}
}
// <error-obj-list> is mandatory
boolean bIsErrorObjListFound = false;
LinkedList<PcepErrorObject> llErrObjList = pcepError.getErrorObjList();
if (llErrObjList != null) {
ListIterator<PcepErrorObject> errObjListIterator = llErrObjList.listIterator();
while (errObjListIterator.hasNext()) {
errObjListIterator.next().write(cb);
bIsErrorObjListFound = true;
}
}
if (!bIsErrorObjListFound) {
throw new PcepParseException("<error-obj-list> is mandatory.");
}
}
}
@Override
public LinkedList<Integer> getErrorType() {
LinkedList<Integer> errorType = new LinkedList<>();
ListIterator<PcepError> listIterator = errList.listIterator();
PcepErrorObject errObj;
int error;
while (listIterator.hasNext()) {
PcepError pcepError = listIterator.next();
LinkedList<PcepErrorObject> llErrObjList = pcepError.getErrorObjList();
if (llErrObjList != null) {
ListIterator<PcepErrorObject> errObjListIterator = llErrObjList.listIterator();
while (errObjListIterator.hasNext()) {
errObj = errObjListIterator.next();
error = errObj.getErrorType();
errorType.add(error);
}
}
}
return errorType;
}
@Override
public LinkedList<Integer> getErrorValue() {
LinkedList<Integer> errorValue = new LinkedList<>();
ListIterator<PcepError> listIterator = errList.listIterator();
PcepErrorObject errObj;
int error;
while (listIterator.hasNext()) {
PcepError pcepError = listIterator.next();
LinkedList<PcepErrorObject> llErrObjList = pcepError.getErrorObjList();
if (llErrObjList != null) {
ListIterator<PcepErrorObject> errObjListIterator = llErrObjList.listIterator();
while (errObjListIterator.hasNext()) {
errObj = errObjListIterator.next();
error = errObj.getErrorValue();
errorValue.add(error);
}
}
}
return errorValue;
}
/**
* Builder class for PCEP error info.
*/
public static class Builder implements PcepErrorInfo.Builder {
private LinkedList<PcepError> errll;
@Override
public PcepErrorInfo build() {
return new PcepErrorInfoVer1(errll);
}
@Override
public LinkedList<PcepError> getPcepErrorList() {
return this.errll;
}
@Override
public Builder setPcepErrorList(LinkedList<PcepError> errll) {
this.errll = errll;
return this;
}
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("ErrorList", errList).toString();
}
}
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