Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Schedule creation of geotiff zip files in the background #938

Merged
merged 1 commit into from
Apr 16, 2024
Merged

Schedule creation of geotiff zip files in the background #938

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion src/main/java/com/conveyal/analysis/components/BackendComponents.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -86,7 +86,7 @@ public List<HttpController> standardHttpControllers () {
new GtfsController(gtfsCache),
new BundleController(this),
new OpportunityDatasetController(fileStorage, taskScheduler, censusExtractor, database),
new RegionalAnalysisController(broker, fileStorage),
new RegionalAnalysisController(broker, fileStorage, taskScheduler),
new AggregationAreaController(fileStorage, database, taskScheduler),
// This broker controller registers at least one handler at URL paths beginning with /internal, which
// is exempted from authentication and authorization, but should be hidden from the world
Expand Down
101 changes: 69 additions & 32 deletions src/main/java/com/conveyal/analysis/controllers/RegionalAnalysisController.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
import com.conveyal.analysis.AnalysisServerException;
import com.conveyal.analysis.SelectingGridReducer;
import com.conveyal.analysis.UserPermissions;
import com.conveyal.analysis.components.TaskScheduler;
import com.conveyal.analysis.components.broker.Broker;
import com.conveyal.analysis.components.broker.JobStatus;
import com.conveyal.analysis.models.AnalysisRequest;
Expand All @@ -11,6 +12,7 @@
import com.conveyal.analysis.models.RegionalAnalysis;
import com.conveyal.analysis.persistence.Persistence;
import com.conveyal.analysis.results.CsvResultType;
import com.conveyal.analysis.util.HttpStatus;
import com.conveyal.analysis.util.JsonUtil;
import com.conveyal.file.FileStorage;
import com.conveyal.file.FileStorageFormat;
Expand All @@ -22,6 +24,7 @@
import com.conveyal.r5.analyst.PointSet;
import com.conveyal.r5.analyst.PointSetCache;
import com.conveyal.r5.analyst.cluster.RegionalTask;
import com.conveyal.r5.analyst.progress.Task;
import com.google.common.primitives.Ints;
import com.mongodb.QueryBuilder;
import gnu.trove.list.array.TIntArrayList;
Expand All @@ -36,6 +39,7 @@
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
Expand All @@ -45,9 +49,12 @@
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.zip.GZIPOutputStream;

import static com.conveyal.analysis.util.JsonUtil.toJson;
Expand All @@ -60,6 +67,7 @@
import static com.google.common.base.Preconditions.checkState;
import static org.eclipse.jetty.http.MimeTypes.Type.APPLICATION_JSON;
import static org.eclipse.jetty.http.MimeTypes.Type.TEXT_HTML;
import static org.eclipse.jetty.http.MimeTypes.Type.TEXT_PLAIN;

/**
* Spark HTTP handler methods that allow launching new regional analyses, as well as deleting them and fetching
Expand All @@ -80,10 +88,12 @@ public class RegionalAnalysisController implements HttpController {

private final Broker broker;
private final FileStorage fileStorage;
private final TaskScheduler taskScheduler;

public RegionalAnalysisController (Broker broker, FileStorage fileStorage) {
public RegionalAnalysisController (Broker broker, FileStorage fileStorage, TaskScheduler taskScheduler) {
this.broker = broker;
this.fileStorage = fileStorage;
this.taskScheduler = taskScheduler;
}

private Collection<RegionalAnalysis> getRegionalAnalysesForRegion(String regionId, UserPermissions userPermissions) {
Expand Down Expand Up @@ -254,8 +264,9 @@ private HumanKey getSingleCutoffGrid (
grid.writeGeotiff(fos);
break;
}

LOG.debug("Finished deriving single-cutoff grid {}. Transferring to storage.", singleCutoffKey);
fileStorage.moveIntoStorage(singleCutoffFileStorageKey, localFile);
LOG.debug("Finished transferring single-cutoff grid {} to storage.", singleCutoffKey);
}
String analysisHumanName = humanNameForEntity(analysis);
String destinationHumanName = humanNameForEntity(destinations);
Expand All @@ -266,6 +277,10 @@ private HumanKey getSingleCutoffGrid (
return new HumanKey(singleCutoffFileStorageKey, resultHumanFilename);
}

// Prevent multiple requests from creating the same files in parallel.
// This could potentially be integrated into FileStorage with enum return values or an additional boolean method.
private Set<String> filesBeingPrepared = Collections.synchronizedSet(new HashSet<>());

private Object getAllRegionalResults (Request req, Response res) throws IOException {
final String regionalAnalysisId = req.params("_id");
final UserPermissions userPermissions = UserPermissions.from(req);
Expand All @@ -277,39 +292,61 @@ private Object getAllRegionalResults (Request req, Response res) throws IOExcept
throw AnalysisServerException.badRequest("Batch result download only available for gridded origins.");
}
FileStorageKey zippedResultsKey = new FileStorageKey(RESULTS, analysis._id + "_ALL.zip");
if (!fileStorage.exists(zippedResultsKey)) {
// Iterate over all dest, cutoff, percentile combinations and generate one geotiff grid output for each one.
List<HumanKey> humanKeys = new ArrayList<>();
for (String destinationPointSetId : analysis.destinationPointSetIds) {
OpportunityDataset destinations = getDestinations(destinationPointSetId, userPermissions);
for (int cutoffMinutes : analysis.cutoffsMinutes) {
for (int percentile : analysis.travelTimePercentiles) {
HumanKey gridKey = getSingleCutoffGrid(
analysis, destinations, cutoffMinutes, percentile, FileStorageFormat.GEOTIFF
);
humanKeys.add(gridKey);
if (fileStorage.exists(zippedResultsKey)) {
res.type(APPLICATION_JSON.asString());
String analysisHumanName = humanNameForEntity(analysis);
return fileStorage.getJsonUrl(zippedResultsKey, analysisHumanName, "zip");
}
if (filesBeingPrepared.contains(zippedResultsKey.path)) {
res.type(TEXT_PLAIN.asString());
res.status(HttpStatus.ACCEPTED_202);
return "Geotiff zip is already being prepared in the background.";
}
// File did not exist. Create it in the background and ask caller to request it later.
filesBeingPrepared.add(zippedResultsKey.path);
Task task = Task.create("Zip all geotiffs for regional analysis " + analysis.name)
.forUser(userPermissions)
.withAction(progressListener -> {
int nSteps = analysis.destinationPointSetIds.length * analysis.cutoffsMinutes.length *
analysis.travelTimePercentiles.length * 2 + 1;
progressListener.beginTask("Creating and archiving geotiffs...", nSteps);
// Iterate over all dest, cutoff, percentile combinations and generate one geotiff for each combination.
List<HumanKey> humanKeys = new ArrayList<>();
for (String destinationPointSetId : analysis.destinationPointSetIds) {
OpportunityDataset destinations = getDestinations(destinationPointSetId, userPermissions);
for (int cutoffMinutes : analysis.cutoffsMinutes) {
for (int percentile : analysis.travelTimePercentiles) {
HumanKey gridKey = getSingleCutoffGrid(
analysis, destinations, cutoffMinutes, percentile, FileStorageFormat.GEOTIFF
);
humanKeys.add(gridKey);
progressListener.increment();
}
}
}
}
File tempZipFile = File.createTempFile("regional", ".zip");
// Zipfs can't open existing empty files, the file has to not exist. FIXME: Non-dangerous race condition
// Examining ZipFileSystemProvider reveals a "useTempFile" env parameter, but this is for the individual entries.
// May be better to just use zipOutputStream which would also allow gzip - zip CSV conversion.
tempZipFile.delete();
Map<String, String> env = Map.of("create", "true");
URI uri = URI.create("jar:file:" + tempZipFile.getAbsolutePath());
try (FileSystem zipFilesystem = FileSystems.newFileSystem(uri, env)) {
for (HumanKey key : humanKeys) {
Path storagePath = fileStorage.getFile(key.storageKey).toPath();
Path zipPath = zipFilesystem.getPath(key.humanName);
Files.copy(storagePath, zipPath, StandardCopyOption.REPLACE_EXISTING);
File tempZipFile = File.createTempFile("regional", ".zip");
// Zipfs can't open existing empty files, the file has to not exist. FIXME: Non-dangerous race condition
// Examining ZipFileSystemProvider reveals a "useTempFile" env parameter, but this is for the individual
// entries. May be better to just use zipOutputStream which would also allow gzip - zip CSV conversion.
tempZipFile.delete();
Map<String, String> env = Map.of("create", "true");
URI uri = URI.create("jar:file:" + tempZipFile.getAbsolutePath());
try (FileSystem zipFilesystem = FileSystems.newFileSystem(uri, env)) {
for (HumanKey key : humanKeys) {
Path storagePath = fileStorage.getFile(key.storageKey).toPath();
Path zipPath = zipFilesystem.getPath(key.humanName);
Files.copy(storagePath, zipPath, StandardCopyOption.REPLACE_EXISTING);
progressListener.increment();
}
}
}
fileStorage.moveIntoStorage(zippedResultsKey, tempZipFile);
}
res.type(APPLICATION_JSON.asString());
String analysisHumanName = humanNameForEntity(analysis);
return fileStorage.getJsonUrl(zippedResultsKey, analysisHumanName, "zip");
fileStorage.moveIntoStorage(zippedResultsKey, tempZipFile);
progressListener.increment();
filesBeingPrepared.remove(zippedResultsKey.path);
});
taskScheduler.enqueue(task);
res.type(TEXT_PLAIN.asString());
res.status(HttpStatus.ACCEPTED_202);
return "Building geotiff zip in background.";
}

/**
Expand Down
2 changes: 1 addition & 1 deletion src/main/java/com/conveyal/r5/analyst/progress/Task.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -162,7 +162,7 @@ protected void bubbleUpProgress() {
}

/**
* Check that all necesary fields have been set before enqueueing for execution, and check any invariants.
* Check that all necessary fields have been set before enqueueing for execution, and check any invariants.
*/
public void validate () {
if (this.user == null) {
Expand Down
Loading