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com.hubspot.singularity.s3uploader.SingularityS3UploaderDriver Maven / Gradle / Ivy
package com.hubspot.singularity.s3uploader;
import java.io.IOException;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardWatchEventKinds;
import java.nio.file.WatchEvent.Kind;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.amazonaws.auth.BasicAWSCredentials;
import com.google.common.base.Optional;
import com.google.common.base.Predicate;
import com.google.common.base.Throwables;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Iterables;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import com.google.inject.Inject;
import com.google.inject.name.Named;
import com.hubspot.mesos.JavaUtils;
import com.hubspot.singularity.runner.base.config.MissingConfigException;
import com.hubspot.singularity.runner.base.config.SingularityRunnerBaseModule;
import com.hubspot.singularity.runner.base.configuration.SingularityRunnerBaseConfiguration;
import com.hubspot.singularity.runner.base.sentry.SingularityRunnerExceptionNotifier;
import com.hubspot.singularity.runner.base.shared.JsonObjectFileHelper;
import com.hubspot.singularity.runner.base.shared.ProcessUtils;
import com.hubspot.singularity.runner.base.shared.S3UploadMetadata;
import com.hubspot.singularity.runner.base.shared.SingularityDriver;
import com.hubspot.singularity.runner.base.shared.WatchServiceHelper;
import com.hubspot.singularity.s3.base.config.SingularityS3Configuration;
import com.hubspot.singularity.s3uploader.config.SingularityS3UploaderConfiguration;
public class SingularityS3UploaderDriver extends WatchServiceHelper implements SingularityDriver {
private static final Logger LOG = LoggerFactory.getLogger(SingularityS3UploaderDriver.class);
private final SingularityRunnerBaseConfiguration baseConfiguration;
private final SingularityS3Configuration s3Configuration;
private final SingularityS3UploaderConfiguration configuration;
private final ScheduledExecutorService scheduler;
private final Map metadataToUploader;
private final Map uploaderLastHadFilesAt;
private final Lock runLock;
private final ExecutorService executorService;
private final FileSystem fileSystem;
private final Set expiring;
private final SingularityS3UploaderMetrics metrics;
private final JsonObjectFileHelper jsonObjectFileHelper;
private final ProcessUtils processUtils;
private final String hostname;
private final SingularityRunnerExceptionNotifier exceptionNotifier;
private final List immediateUploadMetadata;
private final ReentrantLock lock;
private final ConcurrentMap> immediateUploaders;
private ScheduledFuture future;
@Inject
public SingularityS3UploaderDriver(SingularityRunnerBaseConfiguration baseConfiguration, SingularityS3UploaderConfiguration configuration, SingularityS3Configuration s3Configuration,
SingularityS3UploaderMetrics metrics, JsonObjectFileHelper jsonObjectFileHelper, @Named(SingularityRunnerBaseModule.HOST_NAME_PROPERTY) String hostname, SingularityRunnerExceptionNotifier exceptionNotifier) {
super(configuration.getPollForShutDownMillis(), Paths.get(baseConfiguration.getS3UploaderMetadataDirectory()), ImmutableList.of(StandardWatchEventKinds.ENTRY_CREATE, StandardWatchEventKinds.ENTRY_MODIFY, StandardWatchEventKinds.ENTRY_DELETE));
this.baseConfiguration = baseConfiguration;
this.s3Configuration = s3Configuration;
this.metrics = metrics;
this.fileSystem = FileSystems.getDefault();
this.jsonObjectFileHelper = jsonObjectFileHelper;
this.configuration = configuration;
this.metadataToUploader = Maps.newHashMap();
this.uploaderLastHadFilesAt = Maps.newHashMap();
this.expiring = Sets.newHashSet();
this.metrics.setExpiringCollection(expiring);
this.runLock = new ReentrantLock();
this.processUtils = new ProcessUtils(LOG);
this.executorService = JavaUtils.newFixedTimingOutThreadPool(configuration.getExecutorMaxUploadThreads(), TimeUnit.SECONDS.toMillis(30), "SingularityS3Uploader-%d");
this.scheduler = Executors.newScheduledThreadPool(1, new ThreadFactoryBuilder().setNameFormat("SingularityS3Driver-%d").build());
this.hostname = hostname;
this.exceptionNotifier = exceptionNotifier;
this.immediateUploadMetadata = new ArrayList<>();
this.lock = new ReentrantLock();
this.immediateUploaders = Maps.newConcurrentMap();
}
private void readInitialFiles() throws IOException {
final long start = System.currentTimeMillis();
LOG.info("Scanning for metadata files (*{}) in {}", baseConfiguration.getS3UploaderMetadataSuffix(), baseConfiguration.getS3UploaderMetadataDirectory());
int foundFiles = 0;
for (Path file : JavaUtils.iterable(Paths.get(baseConfiguration.getS3UploaderMetadataDirectory()))) {
if (!isS3MetadataFile(file)) {
continue;
}
if (handleNewOrModifiedS3Metadata(file)) {
foundFiles++;
}
}
LOG.info("Found {} file(s) in {}", foundFiles, JavaUtils.duration(start));
}
@Override
public void startAndWait() {
if (!configuration.getS3AccessKey().or(s3Configuration.getS3AccessKey()).isPresent()) {
throw new MissingConfigException("s3AccessKey not set in any s3 configs!");
}
if (!configuration.getS3SecretKey().or(s3Configuration.getS3SecretKey()).isPresent()) {
throw new MissingConfigException("s3SecretKey not set in any s3 configs!");
}
try {
readInitialFiles();
} catch (Throwable t) {
throw Throwables.propagate(t);
}
future = this.scheduler.scheduleAtFixedRate(new Runnable() {
@Override
public void run() {
final long start = System.currentTimeMillis();
runLock.lock();
if (isStopped()) {
LOG.warn("Driver is stopped, not checking uploads");
return;
}
int uploads = 0;
final int uploaders = metadataToUploader.size();
metrics.startUploads();
try {
uploads = checkUploads();
} catch (Throwable t) {
LOG.error("Uncaught exception while checking {} upload(s)", uploaders, t);
exceptionNotifier.notify(String.format("Error checking uploads (%s)", t.getMessage()), t, Collections.emptyMap());
} finally {
runLock.unlock();
metrics.finishUploads();
LOG.info("Found {} items from {} uploader(s) in {}", uploads, uploaders, JavaUtils.duration(start));
}
}
}, configuration.getCheckUploadsEverySeconds(), configuration.getCheckUploadsEverySeconds(), TimeUnit.SECONDS);
try {
super.watch();
} catch (Throwable t) {
throw Throwables.propagate(t);
}
}
@Override
public void shutdown() {
final long start = System.currentTimeMillis();
LOG.info("Gracefully shutting down S3Uploader, this may take a few moments...");
runLock.lock();
try {
if (!super.stop()) {
LOG.info("Already shutting down, ignoring request");
return;
}
} finally {
runLock.unlock();
}
if (future != null) {
future.cancel(false);
}
scheduler.shutdown();
executorService.shutdown();
LOG.info("Shut down in {}", JavaUtils.duration(start));
}
private int checkUploads() {
if (metadataToUploader.isEmpty() && immediateUploaders.isEmpty()) {
return 0;
}
int totesUploads = 0;
// Check results of immediate uploaders
List toRetry = new ArrayList<>();
List toRemove = new ArrayList<>();
for (Map.Entry> entry : immediateUploaders.entrySet()) {
try {
int uploadedFiles = entry.getValue().get();
if (uploadedFiles != -1) {
totesUploads += uploadedFiles;
toRemove.add(entry.getKey());
} else {
toRetry.add(entry.getKey());
}
} catch (Throwable t) {
metrics.error();
LOG.error("Waiting on future", t);
exceptionNotifier.notify(String.format("Error waiting on uploader future (%s)", t.getMessage()), t, ImmutableMap.of("metadataPath", entry.getKey().getMetadataPath().toString()));
toRetry.add(entry.getKey());
}
}
for (SingularityS3Uploader uploader : toRemove) {
metrics.getImmediateUploaderCounter().dec();
immediateUploaders.remove(uploader);
immediateUploadMetadata.remove(uploader.getUploadMetadata());
expiring.remove(uploader);
try {
LOG.debug("Deleting finished immediate uploader {}", uploader.getMetadataPath());
Files.delete(uploader.getMetadataPath());
} catch (NoSuchFileException nfe) {
LOG.warn("File {} was already deleted", nfe.getFile());
} catch (IOException e) {
LOG.warn("Couldn't delete {}", uploader.getMetadataPath(), e);
exceptionNotifier.notify("Could not delete metadata file", e, ImmutableMap.of("metadataPath", uploader.getMetadataPath().toString()));
}
}
for (SingularityS3Uploader uploader : toRetry) {
LOG.debug("Retrying immediate uploader {}", uploader);
performImmediateUpload(uploader);
}
// Check regular uploaders
int initialExpectedSize = Math.max(metadataToUploader.size(), 1);
final Set filesToUpload = Collections.newSetFromMap(new ConcurrentHashMap(initialExpectedSize * 2, 0.75f, initialExpectedSize));
final Map> futures = Maps.newHashMapWithExpectedSize(initialExpectedSize);
final Map finishing = Maps.newHashMapWithExpectedSize(initialExpectedSize);
for (final SingularityS3Uploader uploader : metadataToUploader.values()) {
final boolean isFinished = isFinished(uploader);
// do this here so we run at least once with isFinished = true
finishing.put(uploader, isFinished);
futures.put(uploader, executorService.submit(performUploadCallable(uploader, filesToUpload, isFinished, false)));
}
LOG.info("Waiting on {} future(s)", futures.size());
final long now = System.currentTimeMillis();
final Set expiredUploaders = Sets.newHashSetWithExpectedSize(initialExpectedSize);
for (Entry> uploaderToFuture : futures.entrySet()) {
final SingularityS3Uploader uploader = uploaderToFuture.getKey();
try {
final int foundFiles = uploaderToFuture.getValue().get();
final boolean isFinished = finishing.get(uploader);
if (foundFiles == 0 && shouldExpire(uploader, isFinished)) {
LOG.info("Expiring {}", uploader);
expiredUploaders.add(uploader);
} else {
LOG.trace("Updating uploader {} last expire time", uploader);
uploaderLastHadFilesAt.put(uploader, now);
}
totesUploads += foundFiles;
} catch (Throwable t) {
metrics.error();
LOG.error("Waiting on future", t);
exceptionNotifier.notify(String.format("Error waiting on uploader future (%s)", t.getMessage()), t, ImmutableMap.of("metadataPath", uploader.getMetadataPath().toString()));
}
}
for (SingularityS3Uploader expiredUploader : expiredUploaders) {
metrics.getUploaderCounter().dec();
metadataToUploader.remove(expiredUploader.getUploadMetadata());
uploaderLastHadFilesAt.remove(expiredUploader);
expiring.remove(expiredUploader);
try {
LOG.debug("Deleting expired uploader {}", expiredUploader.getMetadataPath());
Files.delete(expiredUploader.getMetadataPath());
} catch (NoSuchFileException nfe) {
LOG.warn("File {} was already deleted", nfe.getFile());
} catch (IOException e) {
LOG.warn("Couldn't delete {}", expiredUploader.getMetadataPath(), e);
exceptionNotifier.notify("Could not delete metadata file", e, ImmutableMap.of("metadataPath", expiredUploader.getMetadataPath().toString()));
}
}
return totesUploads;
}
private Callable performUploadCallable(final SingularityS3Uploader uploader, final Set filesToUpload, final boolean finished, final boolean immediate) {
return new Callable() {
@Override
public Integer call() {
Integer returnValue = 0;
try {
returnValue = uploader.upload(filesToUpload, finished);
} catch (Throwable t) {
metrics.error();
LOG.error("Error while processing uploader {}", uploader, t);
exceptionNotifier.notify(String.format("Error processing uploader (%s)", t.getMessage()), t, ImmutableMap.of("metadataPath", uploader.getMetadataPath().toString()));
if (immediate) {
return -1;
}
}
return returnValue;
}
};
}
private void performImmediateUpload(final SingularityS3Uploader uploader) {
final Set filesToUpload = Collections
.newSetFromMap(new ConcurrentHashMap(Math.max(metadataToUploader.size(), 1) * 2, 0.75f, Math.max(metadataToUploader.size(), 1)));
final boolean finished = isFinished(uploader);
immediateUploaders.put(uploader, executorService.submit(performUploadCallable(uploader, filesToUpload, finished, true)));
}
private boolean shouldExpire(SingularityS3Uploader uploader, boolean isFinished) {
if (isFinished) {
return true;
}
if (uploader.getUploadMetadata().getFinishedAfterMillisWithoutNewFile().isPresent()) {
if (uploader.getUploadMetadata().getFinishedAfterMillisWithoutNewFile().get() < 0) {
LOG.trace("{} never expires", uploader);
return false;
}
}
final long durationSinceLastFile = System.currentTimeMillis() - uploaderLastHadFilesAt.get(uploader);
final long expireAfterMillis = uploader.getUploadMetadata().getFinishedAfterMillisWithoutNewFile().or(configuration.getStopCheckingAfterMillisWithoutNewFile());
if (durationSinceLastFile > expireAfterMillis) {
return true;
} else {
LOG.trace("Not expiring uploader {}, duration {} (max {}), isFinished: {})", uploader, JavaUtils.durationFromMillis(durationSinceLastFile), JavaUtils.durationFromMillis(expireAfterMillis), isFinished);
}
return false;
}
private boolean isFinished(SingularityS3Uploader uploader) {
if (expiring.contains(uploader)) {
return true;
}
if (uploader.getUploadMetadata().getPid().isPresent()) {
if (!processUtils.doesProcessExist(uploader.getUploadMetadata().getPid().get())) {
LOG.info("Pid {} not present - expiring uploader {}", uploader.getUploadMetadata().getPid().get(), uploader);
expiring.add(uploader);
return true;
}
}
return false;
}
private boolean handleNewOrModifiedS3Metadata(Path filename) throws IOException {
Optional maybeMetadata = readS3UploadMetadata(filename);
if (!maybeMetadata.isPresent()) {
return false;
}
final S3UploadMetadata metadata = maybeMetadata.get();
SingularityS3Uploader existingUploader = metadataToUploader.get(metadata);
if (existingUploader != null) {
if (metadata.getUploadImmediately().isPresent() && metadata.getUploadImmediately().get()) {
LOG.debug("Existing metadata {} from {} changed to be immediate, forcing upload", metadata, filename);
expiring.remove(existingUploader);
if (canCreateImmediateUploader(metadata)) {
metrics.getUploaderCounter().dec();
metrics.getImmediateUploaderCounter().inc();
metadataToUploader.remove(existingUploader.getUploadMetadata());
uploaderLastHadFilesAt.remove(existingUploader);
performImmediateUpload(existingUploader);
return true;
} else {
return false;
}
} else if (existingUploader.getUploadMetadata().isFinished() == metadata.isFinished()) {
LOG.debug("Ignoring metadata {} from {} because there was already one present", metadata, filename);
return false;
} else {
LOG.info("Toggling uploader {} finish state to {}", existingUploader, metadata.isFinished());
if (metadata.isFinished()) {
expiring.add(existingUploader);
} else {
expiring.remove(existingUploader);
}
return true;
}
}
try {
Optional bucketCreds = Optional.absent();
if (configuration.getS3BucketCredentials().containsKey(metadata.getS3Bucket())) {
bucketCreds = Optional.of(configuration.getS3BucketCredentials().get(metadata.getS3Bucket()).toAWSCredentials());
}
final BasicAWSCredentials defaultCredentials = new BasicAWSCredentials(configuration.getS3AccessKey().or(s3Configuration.getS3AccessKey()).get(), configuration.getS3SecretKey().or(s3Configuration.getS3SecretKey()).get());
final SingularityS3Uploader uploader = new SingularityS3Uploader(bucketCreds.or(defaultCredentials), metadata, fileSystem, metrics, filename, configuration, hostname, exceptionNotifier);
if (metadata.isFinished()) {
expiring.add(uploader);
}
LOG.info("Created new uploader {}", uploader);
if (metadata.getUploadImmediately().isPresent()
&& metadata.getUploadImmediately().get()) {
if (canCreateImmediateUploader(metadata)) {
metrics.getImmediateUploaderCounter().inc();
this.performImmediateUpload(uploader);
return true;
} else {
return false;
}
} else {
metrics.getUploaderCounter().inc();
metadataToUploader.put(metadata, uploader);
uploaderLastHadFilesAt.put(uploader, System.currentTimeMillis());
return true;
}
} catch (Throwable t) {
LOG.info("Ignoring metadata {} because uploader couldn't be created", metadata, t);
return false;
}
}
@Override
protected boolean processEvent(Kind kind, final Path filename) throws IOException {
metrics.getFilesystemEventsMeter().mark();
if (!isS3MetadataFile(filename)) {
return false;
}
runLock.lock();
try {
if (isStopped()) {
LOG.warn("Driver is stopped, ignoring file watch event for {}", filename);
return false;
}
final Path fullPath = Paths.get(baseConfiguration.getS3UploaderMetadataDirectory()).resolve(filename);
if (kind.equals(StandardWatchEventKinds.ENTRY_DELETE)) {
Optional found = Iterables.tryFind(metadataToUploader.values(), new Predicate() {
@Override
public boolean apply(SingularityS3Uploader input) {
return input.getMetadataPath().equals(fullPath);
}
});
LOG.trace("Found {} to match deleted path {}", found, filename);
if (found.isPresent()) {
expiring.add(found.get());
}
} else {
return handleNewOrModifiedS3Metadata(fullPath);
}
return false;
} finally {
runLock.unlock();
}
}
private Optional readS3UploadMetadata(Path filename) throws IOException {
try {
return jsonObjectFileHelper.read(filename, LOG, S3UploadMetadata.class);
} catch (NoSuchFileException nsfe) {
LOG.warn("Tried to read {}, but it doesn't exist!", filename);
return Optional.absent();
}
}
private boolean isS3MetadataFile(Path filename) {
if (!filename.toString().endsWith(baseConfiguration.getS3UploaderMetadataSuffix())) {
LOG.trace("Ignoring a file {} without {} suffix", filename, baseConfiguration.getS3UploaderMetadataSuffix());
return false;
}
return true;
}
private boolean canCreateImmediateUploader(S3UploadMetadata metadata) {
try {
if (lock.tryLock(400, TimeUnit.MILLISECONDS)) {
if (this.immediateUploadMetadata.contains(metadata)) {
LOG.debug("Already have an immediate uploader for metadata {}.", metadata);
return false;
} else {
LOG.debug("Preparing to create new immediate uploader for metadata {}.", metadata);
this.immediateUploadMetadata.add(metadata);
return true;
}
} else {
LOG.debug("Could not acquire lock to create an immediate uploader for metadata {}.", metadata);
return false;
}
} catch (InterruptedException exn) {
LOG.debug("Interrupted while waiting on a lock to create an immediate uploader for metadata {}.", metadata);
return false;
} finally {
lock.unlock();
}
}
}
