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Rinjae
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package com.eactive.eai.message.parser;
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import java.io.UnsupportedEncodingException;
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import java.util.ArrayList;
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import java.util.LinkedHashMap;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.commons.lang3.math.NumberUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.eactive.eai.message.EncodingVar;
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import com.eactive.eai.message.StandardDataType;
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import com.eactive.eai.message.StandardItem;
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import com.eactive.eai.message.StandardMessage;
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import com.eactive.eai.message.StandardType;
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public class FlatReader implements StandardReader {
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static Logger logger = LoggerFactory.getLogger(FlatReader.class);
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private char FIELD_SEPARATOR = '.';
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private boolean ZERO_BASE_INDEX = true;
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public FlatReader() {
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}
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public StandardMessage parse(StandardMessage message, Object flatObject) throws Exception {
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ArrayList<StandardItem> list = message.toList();
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for(int i=0; i<list.size(); i++) {
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StandardItem item = list.get(i);
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logger.debug("{} Level={} Name={}", i, item.getLevel(), item.getName());
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}
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byte[] srcbytes = null;
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String encoding = EncodingVar.flatEncoding;
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if (flatObject instanceof String) {
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try {
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logger.debug("Encoding : {}", encoding);
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srcbytes = ((String) flatObject).getBytes(encoding);
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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srcbytes = ((String) flatObject).getBytes();
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}
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} else {
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srcbytes = (byte[]) flatObject;
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}
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// make item map(path, value)
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LinkedHashMap<String, String> itemMap = new LinkedHashMap<String, String>();
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message.setReadPosition(0);
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traverse(message, message, srcbytes, null, itemMap);
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int remain = srcbytes.length - message.getReadPosition();
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if(remain > 0) {
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throw new Exception("flat message parsing error(overflow) remain size="+remain);
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}
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message.setBizDataCharset(encoding);
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logger.debug("setBizDataCharset : {}", encoding);
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// for(String key:itemMap.keySet()) {
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// logger.debug("~ itemMap : {} => {}", key, itemMap.get(key) );
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// }
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return message;
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}
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private void traverse(StandardMessage message, StandardItem currentItem, byte[] srcbytes, String parentName
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, LinkedHashMap<String, String> itemMap){
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String fieldName = null;
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ArrayList<StandardItem> childList = null;
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StandardItem item = null;
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int type = currentItem.getType();
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int start = message.getReadPosition();
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fieldName = genPath(parentName, currentItem.getName());
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logger.debug("<-> CALL path = " + fieldName);
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switch(type) {
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case StandardType.MESSAGE:
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childList = currentItem.getChildsList();
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for(int i=0; i<childList.size(); i++) {
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item = childList.get(i);
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logger.debug("@MESSAGE path = {}, start={}, length={}, value=[{}]", fieldName, start, item.getLength(), item.getValue());
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traverse(message, item, srcbytes, null, itemMap);
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}
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break;
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case StandardType.FIELD:
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item = currentItem; //message.findItem(fieldName, FIELD_SEPARATOR, ZERO_BASE_INDEX, true);
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//아래로직은 BIZDATA 에서 처리 하기 때문에 삭제
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// if(item.getDataType() == StandardDataType.ZZ_STRING) {
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//// start = start - item.getLength();
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// logger.debug("@FIELD path = {}, start={}, length={}, ZZ check start {}", fieldName, start, item.getLength(), item.getValue(), start);
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// // cut bizData
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// try {
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// message.cutBizData(item.getLength());
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// } catch (Exception e) {
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// logger.error("@FIELD path = {}, start={}, length={}, cutBizData Failed", fieldName, start, item.getLength(), e);
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// }
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// }
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byte[] value = cut(fieldName, srcbytes, start, item.getLength());
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item.setBytesValue(value, EncodingVar.flatEncoding);
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itemMap.put(fieldName, item.getValue());
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logger.debug("@FIELD path = {}, start={}, length={}, value=[{}]", fieldName, start, item.getLength(), item.getValue());
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start = start + item.getLength();
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message.setReadPosition(start);
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break;
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case StandardType.GROUP:
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logger.debug("@GROUP name={}, getLength={}, getRefPath={}, getRefValue=[{}]"
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, currentItem.getName(), currentItem.getLength(), currentItem.getRefPath(), currentItem.getRefValue());
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if( currentItem.getSize() == 0
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&& StringUtils.isNotBlank(currentItem.getRefPath())
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&& StringUtils.isNotBlank(currentItem.getRefValue()) ) {
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String refItemValue = itemMap.get(currentItem.getRefPath());
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logger.debug("@GROUP name={}, getRefPath={}, refItemValue=[{}], getRefValue=[{}]"
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, currentItem.getName(), currentItem.getRefPath(), refItemValue, currentItem.getRefValue());
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if(refItemValue != null) refItemValue = refItemValue.trim();
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/*
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* 값의 경우의수 NR,ER,""(blank)
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* ER이 아닐경우 표현하고 싶어서 ! 를 추가했음
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* 원칙으로는 NR을 넣었을경우에는 NR 이 있을경우에만 해당됨
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* !ER일경우에는 blank와 NR일 경우에 해당됨
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*/
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String refValue = currentItem.getRefValue();
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if (refValue.startsWith("!")) { // 느낌표가 들어가면 다음에 나오는게 아닌경우
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refValue = refValue.substring(1);
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if (refValue.equals(refItemValue)) {
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logger.warn("@GROUP name={} SKIPPED.", currentItem.getName());
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currentItem.setHidden(true);
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break;
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} else {
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currentItem.setHidden(false);
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}
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} else {
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if (!currentItem.getRefValue().equals(refItemValue)) {
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logger.warn("@GROUP name={} SKIPPED.", currentItem.getName());
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currentItem.setHidden(true);
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break;
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} else {
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currentItem.setHidden(false);
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}
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}
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}
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childList = currentItem.getChildsList();
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for(int i=0; i<childList.size(); i++) {
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item = childList.get(i);
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logger.debug("@GROUP item={}, path = {}, start={}, length={}, value=[{}]", item.getName(), fieldName, start, item.getLength(), item.getValue());
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traverse(message, item, srcbytes, fieldName, itemMap);
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}
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if( currentItem.getSize() == 0) {
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currentItem.setSize(1);
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}
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break;
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case StandardType.GRID:
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logger.debug("@GRID name={}, getLength={}, getRefPath={}, getRefValue=[{}]"
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, currentItem.getName(), currentItem.getLength(), currentItem.getRefPath(), currentItem.getRefValue());
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if( currentItem.getSize() == 0
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&& (StringUtils.isNotBlank(currentItem.getRefPath())
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|| StringUtils.isNotBlank(currentItem.getRefValue())) ) {
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String refItemValue = "";
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if (StringUtils.isNotBlank(currentItem.getRefPath())) {
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refItemValue = itemMap.get(currentItem.getRefPath());
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currentItem.setRefValue(refItemValue);
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} else {
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refItemValue = currentItem.getRefValue();
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}
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currentItem.setSize(NumberUtils.toInt(StringUtils.trim(refItemValue)));
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logger.debug("@GRID name={}, getRefPath={}, refItemValue=[{}], getRefValue=[{}]"
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, currentItem.getName(), currentItem.getRefPath(), refItemValue, currentItem.getRefValue());
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if( !currentItem.getRefValue().equals(refItemValue) ) {
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logger.warn("@GRID name={} SKIPPED.", currentItem.getName());
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break;
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}
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}
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int arraySize = currentItem.getSize();
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for(int ai = 0; ai<arraySize; ai++) {
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LinkedHashMap<String, StandardItem> map = currentItem.getArrayChilds(ai, true);
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if(map == null) {
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logger.warn("Array create failed item path = {}", fieldName +"[" + ai +"]");
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continue;
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}
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childList = new ArrayList<StandardItem>(map.values());
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for(int i=0; i<childList.size(); i++) {
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item = childList.get(i);
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logger.debug("@ARRAY parent path = {}, item={}, start={}, length={}, current value=[{}]", fieldName+"[" + ai +"]", item.getName(), start, item.getLength(), item.getValue());
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traverse(message, item, srcbytes, fieldName +"[" + ai +"]", itemMap);
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}
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}
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break;
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case StandardType.FARRAY:
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logger.debug("@FARRAY name={}, getLength={}, getRefPath={}, getRefValue=[{}]"
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, currentItem.getName(), currentItem.getLength(), currentItem.getRefPath(), currentItem.getRefValue());
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int farraySize = currentItem.getSize();
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item = currentItem; //message.findItem(fieldName, FIELD_SEPARATOR, ZERO_BASE_INDEX, true);
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for(int ai = 0; ai<farraySize; ai++) {
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//아래로직은 BIZDATA 에서 처리 하기 때문에 삭제
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// if(item.getDataType() == StandardDataType.ZZ_STRING) {
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// start = start - item.getLength();
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// logger.debug("@FARRAY path = {}, start={}, length={}, ZZ check start {}", fieldName, start, item.getLength(), item.getValue(), start);
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// // cut bizData
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// try {
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// message.cutBizData(item.getLength());
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// } catch (Exception e) {
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// logger.error("@FARRAY path = {}, start={}, length={}, cutBizData Failed", fieldName, start, item.getLength(), e);
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// }
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// }
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value = cut(fieldName, srcbytes, start, item.getLength());
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item.addBytesValue(value);
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itemMap.put(fieldName, item.getValue());
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logger.debug("@FARRAY path = {}, start={}, length={}, value=[{}]", fieldName, start, item.getLength(), item.getValue());
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start = start + item.getLength();
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message.setReadPosition(start);
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}
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break;
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case StandardType.BIZDATA:
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// FIX-ME : how to calculate bzi data size ?
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// current : bizData is last item in layout items (variable size)
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item = message.findItem(fieldName, FIELD_SEPARATOR, ZERO_BASE_INDEX, true);
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int bizDataSize = item.getLength();
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int zzLength = 0;
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String zzDataPath = message.getZzDataPath();
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if(StringUtils.isNotEmpty(zzDataPath)) {
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try {
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StandardItem zzItem = message.findItem(zzDataPath);
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if(zzItem != null) {
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zzLength = zzItem.getLength();
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}
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}
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catch(Exception ex) {
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logger.warn("ZzData check error", ex);
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}
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}
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if(bizDataSize == 0) {
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bizDataSize = srcbytes.length - start - zzLength;
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}
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byte[] bizDataBytes = cut(fieldName, srcbytes, start, bizDataSize);
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item.setBytesValue(bizDataBytes, EncodingVar.flatEncoding);
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itemMap.put(fieldName, item.getValue());
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logger.debug("@BIZDATA path = {}, start={}, length={}, value=[{}]", fieldName, start, item.getLength(), item.getValue());
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start = start + bizDataSize;
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message.setReadPosition(start);
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break;
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default:
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break;
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}
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}
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private String genPath(String parent, String nodeName) {
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if(parent == null || parent.length() < 1) {
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return nodeName;
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}
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return parent + FIELD_SEPARATOR + nodeName;
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}
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private static byte[] cut(String fieldName, byte[] srcBytes, int start, int length) {
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if (srcBytes == null) {
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return null;
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}
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if (srcBytes.length < (start+length)) {
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StringBuffer sb = new StringBuffer();
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sb.append("item="+ fieldName);
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sb.append(", cut failed(underflow) - start index=" + start);
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sb.append(", item length=" + length);
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sb.append(", total size=" + srcBytes.length);
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throw new RuntimeException(sb.toString());
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}
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byte[] result = new byte[length];
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int end = start + length;
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int p=0;
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for (int i = start; i < end; i++) {
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result[p] = srcBytes[i];
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p++;
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}
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return result;
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}
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// public static void main(String[] args) {
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// }
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}
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