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org.duracloud.snapshot.service.impl.SnapshotJobManagerImpl Maven / Gradle / Ivy
/*
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://duracloud.org/license/
*/
package org.duracloud.snapshot.service.impl;
import java.io.File;
import java.text.MessageFormat;
import java.util.Date;
import org.apache.commons.io.FileUtils;
import org.duracloud.client.ContentStore;
import org.duracloud.common.retry.Retriable;
import org.duracloud.common.retry.Retrier;
import org.duracloud.snapshot.SnapshotConstants;
import org.duracloud.snapshot.SnapshotException;
import org.duracloud.snapshot.SnapshotNotFoundException;
import org.duracloud.snapshot.common.SnapshotServiceConstants;
import org.duracloud.snapshot.db.ContentDirUtils;
import org.duracloud.snapshot.db.model.BaseEntity;
import org.duracloud.snapshot.db.model.DuracloudEndPointConfig;
import org.duracloud.snapshot.db.model.Restoration;
import org.duracloud.snapshot.db.model.Snapshot;
import org.duracloud.snapshot.db.repo.RestoreRepo;
import org.duracloud.snapshot.db.repo.SnapshotRepo;
import org.duracloud.snapshot.dto.RestoreStatus;
import org.duracloud.snapshot.dto.SnapshotStatus;
import org.duracloud.snapshot.dto.task.CompleteCancelSnapshotTaskParameters;
import org.duracloud.snapshot.service.AlreadyInitializedException;
import org.duracloud.snapshot.service.EventLog;
import org.duracloud.snapshot.service.RestorationNotFoundException;
import org.duracloud.snapshot.service.SnapshotJobManager;
import org.duracloud.snapshot.service.SnapshotJobManagerConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.batch.core.BatchStatus;
import org.springframework.batch.core.ExitStatus;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.JobParameters;
import org.springframework.batch.core.JobParametersInvalidException;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.StepExecution;
import org.springframework.batch.core.launch.JobExecutionNotRunningException;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.batch.core.launch.NoSuchJobExecutionException;
import org.springframework.batch.core.repository.JobExecutionAlreadyRunningException;
import org.springframework.batch.core.repository.JobInstanceAlreadyCompleteException;
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.repository.JobRestartException;
import org.springframework.batch.core.scope.context.StepSynchronizationManager;
import org.springframework.batch.core.step.NoSuchStepException;
import org.springframework.batch.core.step.StepLocator;
import org.springframework.batch.core.step.tasklet.StoppableTasklet;
import org.springframework.batch.core.step.tasklet.Tasklet;
import org.springframework.batch.core.step.tasklet.TaskletStep;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;
/**
* The default implementation of the SnapshotJobManager interface.
* Uses spring-batch componentry.
*
* @author Daniel Bernstein Date: Feb 11, 2014
*/
@Component
public class SnapshotJobManagerImpl implements SnapshotJobManager {
private static final Logger log = LoggerFactory.getLogger(SnapshotJobManagerImpl.class);
private JobLauncher jobLauncher;
private JobRepository jobRepository;
private SnapshotRepo snapshotRepo;
private RestoreRepo restoreRepo;
private SnapshotJobManagerConfig config;
private BatchJobBuilderManager builderManager;
private StoreClientHelper storeClientHelper;
private EventLog eventLog;
@Autowired
public SnapshotJobManagerImpl(SnapshotRepo snapshotRepo,
RestoreRepo restoreRepo,
JobLauncher jobLauncher,
JobRepository jobRepository,
BatchJobBuilderManager manager,
StoreClientHelper storeClientHelper,
EventLog eventLog) {
super();
this.restoreRepo = restoreRepo;
this.snapshotRepo = snapshotRepo;
this.builderManager = manager;
this.jobLauncher = jobLauncher;
this.jobRepository = jobRepository;
this.storeClientHelper = storeClientHelper;
this.eventLog = eventLog;
}
/*
* (non-Javadoc)
*
* @see
* org.duracloud.snapshot.rest.SnapshotJobManager#initialize(org.duracloud
* .snapshot.rest.InitParams)
*/
@Override
public void init(SnapshotJobManagerConfig config) throws AlreadyInitializedException {
init(config, true);
}
protected void init(SnapshotJobManagerConfig config,
boolean attemptRestart) throws AlreadyInitializedException {
if (isInitialized()) {
throw new AlreadyInitializedException("Already initialized!");
}
this.config = config;
log.info("initialized successfully.");
if(attemptRestart) {
new Thread(new Runnable() {
@Override
public void run() {
try {
restartIncompleteJobs();
} catch (Exception e) {
log.error(
"failed to restart all incomplete jobs:" + e.getMessage(), e);
}
}
}).start();
}
}
/**
*
*/
private void restartIncompleteJobs() throws Exception {
log.info("checking for incomplete snapshot jobs.");
resumeByStatus(SnapshotStatus.TRANSFERRING_FROM_DURACLOUD);
resumeByStatus(SnapshotStatus.INITIALIZED);
log.info("checking for incomplete restore jobs.");
for (Restoration restore : this.restoreRepo.findRunning()) {
try{
resumeJob(SnapshotServiceConstants.RESTORE_JOB_NAME, restore);
}catch(SnapshotException ex){
log.error("unable to resume restore " + restore, ex);
}
}
}
private void resumeByStatus(final SnapshotStatus status) {
for (Snapshot snapshot : this.snapshotRepo.findByStatusOrderBySnapshotDateAsc(status)) {
try{
resumeJob(SnapshotServiceConstants.SNAPSHOT_JOB_NAME, snapshot);
}catch(SnapshotException ex){
log.error("unable to resume snapshot " + snapshot, ex);
}
}
}
private void resumeJob(String jobName, Object entity) throws SnapshotException {
BatchJobBuilder builder = this.builderManager.getBuilder(entity);
Job job = builder.buildJob(entity, config);
JobParameters params = builder.buildIdentifyingJobParameters(entity);
JobExecution jobExecution = this.jobRepository.getLastJobExecution(jobName, params);
if (jobExecution != null) {
if(!jobExecution.getStatus().isRunning()){
return;
}else{
log.debug("found job execution in running state for {} (job execution = {})", entity, jobExecution);
jobExecution.setStatus(BatchStatus.STOPPED);
jobExecution.setExitStatus(ExitStatus.STOPPED);
jobExecution.setEndTime(new Date());
jobRepository.update(jobExecution);
log.info("updated job execution in running state to stopped: {} (job execution = {})",
entity,
jobExecution);
}
}
try {
JobExecution execution = jobLauncher.run(job, params);
log.info("restarted job execution = {} for {}: newly executed job execution id = {}",
execution,
entity,
execution.getId());
} catch (JobExecutionAlreadyRunningException | JobInstanceAlreadyCompleteException | JobRestartException
| JobParametersInvalidException e) {
log.error(MessageFormat.format("failed to resume stopped job: jobExecution={0}, entity={1}: {2}",
jobExecution,
entity,
e.getMessage()),
e);
}
}
/* (non-Javadoc)
* @see org.duracloud.snapshot.service.SnapshotJobManager#isInitialized()
*/
@Override
public boolean isInitialized() {
return this.config != null;
}
private Snapshot getSnapshot(String snapshotId) throws SnapshotNotFoundException {
Snapshot snapshot = this.snapshotRepo.findByName(snapshotId);
if (snapshot == null) {
throw new SnapshotNotFoundException(snapshotId);
}
return snapshot;
}
@SuppressWarnings("unchecked")
private BatchStatus executeJob(Object entity) throws SnapshotException {
log.debug("executing job for {}", entity);
try {
@SuppressWarnings("rawtypes")
BatchJobBuilder builder = this.builderManager.getBuilder(entity);
Job job = builder.buildJob(entity, config);
JobParameters params = builder.buildJobParameters(entity);
JobExecution execution = jobLauncher.run(job, params);
BatchStatus status = execution.getStatus();
log.info("executed {} using parameters {}: jobexecution={}, execution status={}",
job,
params,
execution,
status);
return status;
} catch (Exception e) {
String message = "Error running job based on " + entity + ": " + e.getMessage();
log.error(message, e);
throw new SnapshotException(e.getMessage(), e);
}
}
/*
* (non-Javadoc)
*
* @see
* org.duracloud.snapshot.manager.SnapshotJobManager#executeRestoration(java
* .lang.String)
*/
@Override
public BatchStatus executeRestoration(String restorationId) throws SnapshotException {
return executeJob(getRestoration(restorationId));
}
/**
* @param restorationId
* @return
*/
private Restoration getRestoration(String restorationId) throws RestorationNotFoundException {
Restoration restoration = this.restoreRepo.findByRestorationId(restorationId);
if (restoration == null) {
throw new RestorationNotFoundException(restorationId);
}
return restoration;
}
/*
* (non-Javadoc)
*
* @see
* org.duracloud.snapshot.manager.SnapshotJobManager#executeSnapshot(java.
* lang.String)
*/
@Override
public BatchStatus executeSnapshot(String snapshotId) throws SnapshotException {
checkInitialized();
return executeJob(getSnapshot(snapshotId));
}
private boolean stop(JobExecution jobExecution, Job job) throws NoSuchJobExecutionException, JobExecutionNotRunningException {
BatchStatus status = jobExecution.getStatus();
if (!(status == BatchStatus.STARTED || status == BatchStatus.STARTING)) {
throw new JobExecutionNotRunningException("JobExecution must be running so that it can be stopped: "+jobExecution);
}
jobExecution.setStatus(BatchStatus.STOPPING);
jobRepository.update(jobExecution);
//get the current stepExecution
for (StepExecution stepExecution : jobExecution.getStepExecutions()) {
if (stepExecution.getStatus().isRunning()) {
try {
//have the step execution that's running -> need to 'stop' it
Step step = ((StepLocator)job).getStep(stepExecution.getStepName());
if (step instanceof TaskletStep) {
Tasklet tasklet = ((TaskletStep)step).getTasklet();
if (tasklet instanceof StoppableTasklet) {
StepSynchronizationManager.register(stepExecution);
((StoppableTasklet)tasklet).stop();
StepSynchronizationManager.release();
}
}
}
catch (NoSuchStepException e) {
log.warn("Step not found",e);
}
}
}
return true;
}
/*
* (non-Javadoc)
*
* @see
* org.duracloud.snapshot.service.SnapshotJobManager#cancelSnapshot(java.
* lang.String)
*/
@Override
@Transactional
public void cancelSnapshot(String snapshotId) throws SnapshotException {
checkInitialized();
final Snapshot snapshot = getSnapshot(snapshotId);
stop(snapshot);
String snapshotDir = ContentDirUtils.getDestinationPath(snapshotId, this.config.getContentRootDir());
deleteDirectory(snapshotDir);
new Thread(new Runnable(){
@Override
public void run() {
final DuracloudEndPointConfig source = snapshot.getSource();
final String spaceId = source.getSpaceId();
final ContentStore contentStore =
storeClientHelper.create(source,
config.getDuracloudUsername(),
config.getDuracloudPassword());
try {
String result = new Retrier().execute(new Retriable(){
/* (non-Javadoc)
* @see org.duracloud.common.retry.Retriable#retry()
*/
@Override
public Object retry() throws Exception {
CompleteCancelSnapshotTaskParameters params =
new CompleteCancelSnapshotTaskParameters();
params.setSpaceId(spaceId);
return contentStore.performTask(SnapshotConstants.COMPLETE_SNAPSHOT_CANCEL_TASK_NAME,
params.serialize());
}
});
log.info("snapshot cancellation is complete: {}", result);
snapshot.setStatus(SnapshotStatus.CANCELLED);
snapshot.setStatusText("");
eventLog.logSnapshotUpdate(snapshot);
}catch(Exception ex){
log.error("failed to complete cancellation on the durastore side for space {}: {}",
spaceId,
ex.getMessage(),
ex);
}
}
}).start();
}
@Transactional
@Override
public Restoration stopRestore(String restoreId) throws SnapshotException {
return stopRestoreInternal(restoreId);
}
@Transactional
public void cancelRestore(String restoreId) throws SnapshotException {
checkInitialized();
final Restoration restore = stopRestoreInternal(restoreId);
String restoreDir = ContentDirUtils.getSourcePath(restoreId, this.config.getContentRootDir());
deleteDirectory(restoreDir);
final DuracloudEndPointConfig destination = restore.getDestination();
new Thread(new Runnable(){
@Override
public void run() {
final String spaceId = destination.getSpaceId();
@SuppressWarnings("unused")
final ContentStore contentStore =
storeClientHelper.create(destination,
config.getDuracloudUsername(),
config.getDuracloudPassword());
try {
String result = new Retrier().execute(new Retriable(){
@Override
public Object retry() throws Exception {
contentStore.deleteSpace(spaceId);
return null;
}
});
log.info("restore cancellation is complete: {}", result);
restore.setStatus(RestoreStatus.CANCELLED);
restore.setStatusText("");
eventLog.logRestoreUpdate(restore);
}catch(Exception ex){
log.error("failed to delete restore space {} as part of cleanup: {}",
spaceId,
ex.getMessage(),
ex);
}
}
}).start();
}
/**
* @param restoreId
* @return
* @throws RestorationNotFoundException
*/
private Restoration stopRestoreInternal(String restoreId) throws SnapshotException {
final Restoration restore = getRestoration(restoreId);
stop(restore);
return restore;
}
/**
* @param entity
* @throws SnapshotException
*/
private void stop(final BaseEntity entity) throws SnapshotException {
JobExecution execution = getJobExecution(entity);
if(execution == null){
log.info("no job executions associated with {}", entity);
return;
}
Job job = this.builderManager.getBuilder(entity)
.buildJob(entity, this.config);
try {
stop(execution, job);
} catch (NoSuchJobExecutionException e1) {
log.warn("job execution not found: " + e1.getMessage());
} catch (JobExecutionNotRunningException e1) {
log.warn("job execution not running: " + e1.getMessage());
}
}
/**
* @param path
*/
private void deleteDirectory(String path) {
log.info("deleting restore dir: {}", path);
File dir = new File(path);
if (!dir.exists()) {
log.info("nothing to delete: {} does not exist.", path);
} else {
boolean success = FileUtils.deleteQuietly(dir);
log.info("deleted dir {}: success={}", path, success);
}
}
private void checkInitialized() throws SnapshotException {
if (!isInitialized()) {
throw new SnapshotException("The application must be initialized " + "before it can be invoked!", null);
}
}
/*
* (non-Javadoc)
*
* @see
* org.duracloud.snapshot.rest.SnapshotJobManager#getJobExecution(java.lang
* .String)
*/
@Override
public BatchStatus getStatus(String snapshotId) throws SnapshotNotFoundException, SnapshotException {
checkInitialized();
JobExecution ex = getJobExecution(this.snapshotRepo.findByName(snapshotId));
if (ex == null) {
return BatchStatus.UNKNOWN;
} else {
return ex.getStatus();
}
}
private JobExecution getJobExecution(BaseEntity entity) {
BatchJobBuilder builder = this.builderManager.getBuilder(entity);
JobParameters params = builder.buildIdentifyingJobParameters(entity);
String jobName = builder.getJobName();
JobExecution ex = this.jobRepository.getLastJobExecution(jobName, params);
return ex;
}
}
