/**
* Parse dataX job configuration file.
*
* @param filename Job configure filename.
* @return a JobConf instance which describes this Job configuration file.
*/
@SuppressWarnings("unchecked")
public static JobConf loadJobConfig(String filename) {
JobConf job = new JobConf();
Document document;
try {
SAXReader reader = new SAXReader();
document = reader.read(new File(filename));
Element rootElement = document.getRootElement();
} catch (DocumentException e) {
LOG.error("DataX Can not find " + filename + " .");
throw new DataExchangeException(e.getCause());
} catch (Exception e) {
LOG.error(String.format("DataX read config file %s failed .", filename));
throw new DataExchangeException(e.getCause());
}
String xpath = "/jobs/job";
Element jobE = (Element) document.selectSingleNode(xpath);
job.setId(
jobE.attributeValue("id") == null
? "DataX_is_still_a_virgin"
: jobE.attributeValue("id").trim());
JobPluginConf readerJobConf = new JobPluginConf();
Element readerE = (Element) document.selectSingleNode(xpath + "/loader");
if (null == readerE) readerE = (Element) document.selectSingleNode(xpath + "/reader");
String readerId = readerE.attributeValue("id");
readerJobConf.setId(readerId == null ? "virgin-reader" : readerId.trim());
Element readerPluinE = (Element) readerE.selectSingleNode("plugin");
readerJobConf.setName(
readerPluinE.getStringValue().trim().replace("loader", "reader").toLowerCase());
Map<String, String> readerParamMap = new HashMap<String, String>();
/*
* for historic reason, we need to check concurrency node first add by
* bazhen.csy
*/
if (readerE.selectSingleNode("concurrency") != null) {
Element readerConcurrencyE = (Element) readerE.selectSingleNode("concurrency");
readerParamMap.put(
"concurrency", StrUtils.replaceString(readerConcurrencyE.attributeValue("core")));
}
List<Element> readerParamE = (List<Element>) readerE.selectNodes("param");
for (Element e : readerParamE) {
readerParamMap.put(
e.attributeValue("key").toLowerCase(),
StrUtils.replaceString(e.attributeValue("value").trim()));
}
PluginParam readerPluginParam = new DefaultPluginParam(readerParamMap);
// if (!readerPluginParam.hasValue("concurrency")
// || readerPluginParam.getIntValue("concurrency", 1) < 0) {
// throw new IllegalArgumentException(
// "Reader option [concurrency] error !");
// }
readerJobConf.setPluginParams(readerPluginParam);
List<JobPluginConf> writerJobConfs = new ArrayList<JobPluginConf>();
List<Element> writerEs = (List<Element>) document.selectNodes(xpath + "/dumper");
if (null == writerEs || 0 == writerEs.size())
writerEs = (List<Element>) document.selectNodes(xpath + "/writer");
for (Element writerE : writerEs) {
JobPluginConf writerPluginConf = new JobPluginConf();
String writerId = writerE.attributeValue("id");
writerPluginConf.setId(writerId == null ? "virgin-writer" : writerId.trim());
String destructLimit = writerE.attributeValue("destructlimit");
if (destructLimit != null) {
writerPluginConf.setDestructLimit(Integer.valueOf(destructLimit));
}
Element writerPluginE = (Element) writerE.selectSingleNode("plugin");
writerPluginConf.setName(
writerPluginE.getStringValue().trim().replace("dumper", "writer").toLowerCase());
Map<String, String> writerParamMap = new HashMap<String, String>();
/*
* for historic reason, we need to check concurrency node add by
* bazhen.csy
*/
if (writerE.selectSingleNode("concurrency") != null) {
Element writerConcurrencyE = (Element) writerE.selectSingleNode("concurrency");
writerParamMap.put(
"concurrency", StrUtils.replaceString(writerConcurrencyE.attributeValue("core")));
}
List<Element> writerParamE = (List<Element>) writerE.selectNodes("param");
for (Element e : writerParamE) {
writerParamMap.put(
e.attributeValue("key").toLowerCase(),
StrUtils.replaceString(e.attributeValue("value").trim()));
}
PluginParam writerPluginParam = new DefaultPluginParam(writerParamMap);
writerPluginConf.setPluginParams(writerPluginParam);
writerJobConfs.add(writerPluginConf);
}
job.setReaderConf(readerJobConf);
job.setWriterConfs(writerJobConfs);
return job;
}
