/**
* Saves the state of the batch for revision runs usage If the current batch is 1000 and revision
* is 1 then the file would be saved as '1000_1.savepoint'
*
* @param batchContext The job batchContext of the batch
* @throws BatchException Any exception occurred during the serialization process
*/
public static synchronized void saveBatchState(BatchContext batchContext) throws BatchException {
BatchInfo toSaveBatchInfo = batchContext.getBatchInfo();
toSaveBatchInfo.setProgressLevelAtLastSavePoint(
(ProgressLevel)
ProgressLevel.getProgressLevel(toSaveBatchInfo.getBatchNo())
.clone()); // clone is necessary as ProgresLevel is static
if (logger.isDebugEnabled()) {
logger.debug(
"Saving Current Batch progress level as ==>"
+ ProgressLevel.getProgressLevel(toSaveBatchInfo.getBatchNo()).toString());
}
String savepointFilePath =
Configurations.getConfigurations().getConfigurations("CORE", "SAVEPOINT", "DIRECTORY");
ObjectOutputStream oos = null;
try {
oos =
new ObjectOutputStream(
new FileOutputStream(
FilenameUtils.concat(
savepointFilePath,
toSaveBatchInfo.getBatchNo()
+ "_"
+ toSaveBatchInfo.getBatchRevNo()
+ ".savepoint")));
oos.writeObject(toSaveBatchInfo);
oos.flush();
batchContext.setBatchStateSaved(true);
} catch (FileNotFoundException e) {
batchContext.setBatchStateSaved(false);
logger.error(e);
throw new BatchException(e.getMessage(), e);
} catch (IOException e) {
batchContext.setBatchStateSaved(false);
logger.error(e);
throw new BatchException(e.getMessage(), e);
} finally {
IOUtils.closeQuietly(oos);
}
}
/**
* Reads the saved state of the batch for revision runs If the current batch number it 1000 and
* revision is 5, then this method would look for saved state of batch 1000 with revision (5 - 1)
* i.e. '1000_4.savepoint'
*
* @param batchContext The context for the batch
* @throws BatchException Any exception thrown during reading of the serialized file
*/
public static synchronized void updateBatchState(BatchContext batchContext)
throws BatchException {
BatchInfo newBatchInfo = batchContext.getBatchInfo();
String savepointFilePath =
Configurations.getConfigurations().getConfigurations("CORE", "SAVEPOINT", "DIRECTORY");
String savePointFile =
FilenameUtils.concat(
savepointFilePath,
newBatchInfo.getBatchNo() + "_" + (newBatchInfo.getBatchRevNo() - 1) + ".savepoint");
if (logger.isDebugEnabled()) {
logger.debug("Reading the saved state from file : " + savePointFile);
}
FileInputStream fis = null;
try {
// Check whether the file exists
File f = new File(savePointFile);
if (!f.exists())
throw new BatchException("Cannot locate the the save point file named :" + savePointFile);
fis = new FileInputStream(f);
ObjectInputStream ois = new ObjectInputStream(fis);
BatchInfo savedBatchInfo = (BatchInfo) ois.readObject();
newBatchInfo.setOrderedMap(savedBatchInfo.getOrderedMap());
newBatchInfo.setProgressLevelAtLastSavePoint(
(ProgressLevel)
savedBatchInfo
.getProgressLevelAtLastSavePoint()); // This object is different but still cloned.
newBatchInfo.setBatchRunDate(savedBatchInfo.getBatchRunDate());
newBatchInfo.setDateRun(savedBatchInfo.isDateRun());
if (logger.isDebugEnabled()) {
logger.debug(
"Last batch saved state is "
+ savedBatchInfo.getProgressLevelAtLastSavePoint().toString());
}
// Set the ExecutionStatus in the ProgressLevel
ExecutionStatus savedExecutionStatus =
newBatchInfo.getProgressLevelAtLastSavePoint().getExecutionStatus();
ProgressLevel.getProgressLevel(newBatchInfo.getBatchNo())
.setExecutionStatus(
savedExecutionStatus.getEntity(), savedExecutionStatus.getStageCode());
fis.close();
fis = null;
ois.close();
ois = null;
} catch (FileNotFoundException e) {
logger.error(e);
throw new BatchException(e.getMessage(), e);
} catch (IOException e) {
logger.error(e);
throw new BatchException(e.getMessage(), e);
} catch (ClassNotFoundException e) {
logger.error(e);
throw new BatchException(e.getMessage(), e);
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
}
}
}
}