diff options
Diffstat (limited to 'config-proxy/src/main/java/com/yahoo/vespa/config/proxy/filedistribution/FileReferencesAndDownloadsMaintainer.java')
-rw-r--r-- | config-proxy/src/main/java/com/yahoo/vespa/config/proxy/filedistribution/FileReferencesAndDownloadsMaintainer.java | 124 |
1 files changed, 91 insertions, 33 deletions
diff --git a/config-proxy/src/main/java/com/yahoo/vespa/config/proxy/filedistribution/FileReferencesAndDownloadsMaintainer.java b/config-proxy/src/main/java/com/yahoo/vespa/config/proxy/filedistribution/FileReferencesAndDownloadsMaintainer.java index 627a15aab65..eab1368a2a1 100644 --- a/config-proxy/src/main/java/com/yahoo/vespa/config/proxy/filedistribution/FileReferencesAndDownloadsMaintainer.java +++ b/config-proxy/src/main/java/com/yahoo/vespa/config/proxy/filedistribution/FileReferencesAndDownloadsMaintainer.java @@ -3,24 +3,29 @@ package com.yahoo.vespa.config.proxy.filedistribution; import com.yahoo.concurrent.DaemonThreadFactory; import com.yahoo.io.IOUtils; +import com.yahoo.vespa.config.util.ConfigUtils; import com.yahoo.vespa.filedistribution.FileDownloader; + import java.io.File; import java.io.IOException; import java.io.UncheckedIOException; +import java.nio.file.Path; import java.nio.file.attribute.BasicFileAttributes; import java.time.Duration; import java.time.Instant; -import java.util.Arrays; +import java.util.Comparator; import java.util.HashSet; +import java.util.List; +import java.util.Optional; import java.util.Set; import java.util.concurrent.ScheduledExecutorService; import java.util.concurrent.ScheduledThreadPoolExecutor; import java.util.concurrent.TimeUnit; import java.util.logging.Level; import java.util.logging.Logger; -import java.util.stream.Collectors; import static java.nio.file.Files.readAttributes; +import static java.util.logging.Level.INFO; /** * Deletes file references and url downloads that have not been used for some time. @@ -35,27 +40,43 @@ class FileReferencesAndDownloadsMaintainer implements Runnable { private static final File defaultUrlDownloadDir = UrlDownloadRpcServer.downloadDir; private static final File defaultFileReferencesDownloadDir = FileDownloader.defaultDownloadDirectory; private static final Duration defaultDurationToKeepFiles = Duration.ofDays(30); + private static final int defaultOutdatedFilesToKeep = 20; private static final Duration interval = Duration.ofMinutes(1); - private final ScheduledExecutorService executor = - new ScheduledThreadPoolExecutor(1, new DaemonThreadFactory("file references and downloads cleanup")); + private final Optional<ScheduledExecutorService> executor; private final File urlDownloadDir; private final File fileReferencesDownloadDir; private final Duration durationToKeepFiles; + private final int outDatedFilesToKeep; FileReferencesAndDownloadsMaintainer() { - this(defaultFileReferencesDownloadDir, defaultUrlDownloadDir, keepFileReferencesDuration()); + this(defaultFileReferencesDownloadDir, defaultUrlDownloadDir, keepFileReferencesDuration(), + outDatedFilesToKeep(), configServers()); } - FileReferencesAndDownloadsMaintainer(File fileReferencesDownloadDir, File urlDownloadDir, Duration durationToKeepFiles) { + FileReferencesAndDownloadsMaintainer(File fileReferencesDownloadDir, + File urlDownloadDir, + Duration durationToKeepFiles, + int outdatedFilesToKeep, + List<String> configServers) { this.fileReferencesDownloadDir = fileReferencesDownloadDir; this.urlDownloadDir = urlDownloadDir; this.durationToKeepFiles = durationToKeepFiles; - executor.scheduleAtFixedRate(this, interval.toSeconds(), interval.toSeconds(), TimeUnit.SECONDS); + this.outDatedFilesToKeep = outdatedFilesToKeep; + // Do not run on config servers + if (configServers.contains(ConfigUtils.getCanonicalHostName())) { + log.log(INFO, "Not running maintainer, since this is on a config server host"); + executor = Optional.empty(); + } else { + executor = Optional.of(new ScheduledThreadPoolExecutor(1, new DaemonThreadFactory("file references and downloads cleanup"))); + executor.get().scheduleAtFixedRate(this, interval.toSeconds(), interval.toSeconds(), TimeUnit.SECONDS); + } } @Override public void run() { + if (executor.isEmpty()) return; + try { deleteUnusedFiles(fileReferencesDownloadDir); deleteUnusedFiles(urlDownloadDir); @@ -65,42 +86,62 @@ class FileReferencesAndDownloadsMaintainer implements Runnable { } public void close() { - executor.shutdownNow(); - try { - if ( ! executor.awaitTermination(10, TimeUnit.SECONDS)) - throw new RuntimeException("Unable to shutdown " + executor + " before timeout"); - } catch (InterruptedException e) { - throw new RuntimeException(e); - } + executor.ifPresent(ex -> { + ex.shutdownNow(); + try { + if (! ex.awaitTermination(10, TimeUnit.SECONDS)) + throw new RuntimeException("Unable to shutdown " + executor + " before timeout"); + } catch (InterruptedException e) { + throw new RuntimeException(e); + } + }); } private void deleteUnusedFiles(File directory) { - Instant deleteNotUsedSinceInstant = Instant.now().minus(durationToKeepFiles); - Set<String> filesOnDisk = new HashSet<>(); + File[] files = directory.listFiles(); - if (files != null) - filesOnDisk.addAll(Arrays.stream(files).map(File::getName).collect(Collectors.toSet())); - log.log(Level.FINE, () -> "Files on disk (in " + directory + "): " + filesOnDisk); + if (files == null) return; + + List<File> filesToDelete = filesThatCanBeDeleted(files); + filesToDelete.forEach(fileReference -> { + if (IOUtils.recursiveDeleteDir(fileReference)) + log.log(Level.FINE, "Deleted " + fileReference.getAbsolutePath()); + else + log.log(Level.WARNING, "Could not delete " + fileReference.getAbsolutePath()); + }); + } - Set<String> filesToDelete = filesOnDisk + private List<File> filesThatCanBeDeleted(File[] files) { + Instant deleteNotUsedSinceInstant = Instant.now().minus(durationToKeepFiles); + + Set<File> filesOnDisk = new HashSet<>(List.of(files)); + log.log(Level.FINE, () -> "Files on disk: " + filesOnDisk); + int deleteCount = Math.max(0, filesOnDisk.size() - outDatedFilesToKeep); + var canBeDeleted = filesOnDisk .stream() - .filter(fileReference -> isFileLastModifiedBefore(new File(directory, fileReference), deleteNotUsedSinceInstant)) - .collect(Collectors.toSet()); - if (filesToDelete.size() > 0) { - log.log(Level.INFO, "Files that can be deleted in " + directory + " (not used since " + deleteNotUsedSinceInstant + "): " + filesToDelete); - filesToDelete.forEach(fileReference -> { - File file = new File(directory, fileReference); - if (!IOUtils.recursiveDeleteDir(file)) - log.log(Level.WARNING, "Could not delete " + file.getAbsolutePath()); - }); - } + .peek(file -> log.log(Level.FINE, () -> file + ":" + fileLastModifiedTime(file.toPath()))) + .filter(fileReference -> isFileLastModifiedBefore(fileReference, deleteNotUsedSinceInstant)) + .sorted(Comparator.comparing(fileReference -> fileLastModifiedTime(fileReference.toPath()))) + .toList(); + + // Make sure we keep some files + canBeDeleted = canBeDeleted.subList(0, Math.min(canBeDeleted.size(), deleteCount)); + if (canBeDeleted.size() > 0) + log.log(INFO, "Files that can be deleted (not accessed since " + deleteNotUsedSinceInstant + + ", will also keep " + outDatedFilesToKeep + + " no matter when last accessed): " + canBeDeleted); + + return canBeDeleted; } private boolean isFileLastModifiedBefore(File fileReference, Instant instant) { - BasicFileAttributes fileAttributes; + return fileLastModifiedTime(fileReference.toPath()).isBefore(instant); + } + + private static Instant fileLastModifiedTime(Path fileReference) { try { - fileAttributes = readAttributes(fileReference.toPath(), BasicFileAttributes.class); - return fileAttributes.lastModifiedTime().toInstant().isBefore(instant); + BasicFileAttributes fileAttributes = readAttributes(fileReference, BasicFileAttributes.class); + return fileAttributes.lastModifiedTime().toInstant(); } catch (IOException e) { throw new UncheckedIOException(e); } @@ -114,4 +155,21 @@ class FileReferencesAndDownloadsMaintainer implements Runnable { return defaultDurationToKeepFiles; } + private static int outDatedFilesToKeep() { + String env = System.getenv("VESPA_KEEP_FILE_REFERENCES_COUNT"); + if (env != null && !env.isEmpty()) + return Integer.parseInt(env); + else + return defaultOutdatedFilesToKeep; + } + + private static List<String> configServers() { + String env = System.getenv("VESPA_CONFIGSERVERS"); + if (env == null || env.isEmpty()) + return List.of(ConfigUtils.getCanonicalHostName()); + else { + return List.of(env.split(",")); + } + } + } |