295 lines
10 KiB
Java
295 lines
10 KiB
Java
package de.bluecolored.bluemap.core.storage.b2;
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import com.backblaze.b2.client.B2ListFilesIterable;
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import com.backblaze.b2.client.B2StorageClient;
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import com.backblaze.b2.client.B2StorageClientFactory;
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import com.backblaze.b2.client.contentHandlers.B2ContentMemoryWriter;
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import com.backblaze.b2.client.contentSources.B2ByteArrayContentSource;
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import com.backblaze.b2.client.exceptions.B2Exception;
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import com.backblaze.b2.client.exceptions.B2NotFoundException;
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import com.backblaze.b2.client.structures.B2FileVersion;
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import com.backblaze.b2.client.structures.B2ListFileNamesRequest;
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import com.backblaze.b2.client.structures.B2UploadFileRequest;
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import com.flowpowered.math.vector.Vector2i;
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import de.bluecolored.bluemap.core.storage.*;
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import de.bluecolored.bluemap.core.util.OnCloseOutputStream;
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import java.io.*;
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import java.nio.file.Path;
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import java.sql.Blob;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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import java.util.Optional;
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import java.util.function.Function;
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import java.util.stream.Collectors;
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import java.util.stream.StreamSupport;
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public class B2Storage extends Storage {
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private boolean closed = false;
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private final B2StorageClient client;
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private final Compression hiresCompression;
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private final String bucket;
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public B2Storage(B2StorageSettings settings) {
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this.client = B2StorageClientFactory.createDefaultFactory().create(settings.getApplicationKeyId(), settings.getApplicationKey(), "BlueMap/unknownversion");
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this.hiresCompression = settings.getCompression();
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this.bucket = settings.getBucket();
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}
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@Override
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public void initialize() throws IOException {}
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@Override
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public OutputStream writeMapTile(String mapId, int lod, Vector2i tile) throws IOException {
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Compression compression = lod == 0 ? this.hiresCompression : Compression.NONE;
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String path = getFilePath(mapId, lod, tile);
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ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
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return new OnCloseOutputStream(new BufferedOutputStream(compression.compress(byteOut)), () -> {
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client.uploadSmallFile(B2UploadFileRequest.builder(
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bucket,
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path,
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getFileMime(lod),
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B2ByteArrayContentSource.build(byteOut.toByteArray())
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).build());
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});
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}
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@Override
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public Optional<CompressedInputStream> readMapTile(String mapId, int lod, Vector2i tile) throws IOException {
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Compression compression = lod == 0 ? this.hiresCompression : Compression.NONE;
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String path = getFilePath(mapId, lod, tile);
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B2ContentMemoryWriter writer = B2ContentMemoryWriter.build();
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try {
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client.downloadByName(bucket, path, writer);
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ByteArrayInputStream is = new ByteArrayInputStream(writer.getBytes());
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return Optional.of(new CompressedInputStream(is, compression));
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} catch (B2Exception e) {
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if (e instanceof B2NotFoundException) {
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return Optional.empty();
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} else {
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throw new IOException(e);
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}
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}
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}
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@Override
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public Optional<TileInfo> readMapTileInfo(String mapId, int lod, Vector2i tile) throws IOException {
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Compression compression = lod == 0 ? this.hiresCompression : Compression.NONE;
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String path = getFilePath(mapId, lod, tile);
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try {
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B2FileVersion info = client.getFileInfoByName(bucket, path);
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return Optional.of(new TileInfo() {
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@Override
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public CompressedInputStream readMapTile() throws IOException {
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return B2Storage.this.readMapTile(mapId, lod, tile)
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.orElseThrow(() -> new IOException("Tile no longer present!"));
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}
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@Override
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public Compression getCompression() {
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return compression;
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}
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@Override
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public long getSize() {
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return info.getContentLength();
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}
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@Override
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public long getLastModified() {
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return info.getUploadTimestamp();
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}
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});
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} catch (B2Exception e) {
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if (e instanceof B2NotFoundException) {
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return Optional.empty();
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} else {
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throw new IOException(e);
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}
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}
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}
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@Override
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public void deleteMapTile(String mapId, int lod, Vector2i tile) throws IOException {
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String path = getFilePath(mapId, lod, tile);
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try {
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client.hideFile(bucket, path);
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} catch (B2Exception e) {
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if (!(e instanceof B2NotFoundException)) {
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throw new IOException(e);
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}
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}
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}
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@Override
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public OutputStream writeMeta(String mapId, String name) throws IOException {
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String path = getMetaFilePath(mapId, name);
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ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
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return new OnCloseOutputStream(new BufferedOutputStream(byteOut), () -> {
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client.uploadSmallFile(B2UploadFileRequest.builder(
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bucket,
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path,
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"b2/x-auto",
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B2ByteArrayContentSource.build(byteOut.toByteArray())
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).build());
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});
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}
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@Override
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public Optional<InputStream> readMeta(String mapId, String name) throws IOException {
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String path = getMetaFilePath(mapId, name);
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B2ContentMemoryWriter writer = B2ContentMemoryWriter.build();
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try {
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client.downloadByName(bucket, path, writer);
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ByteArrayInputStream is = new ByteArrayInputStream(writer.getBytes());
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return Optional.of(is);
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} catch (B2Exception e) {
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if (e instanceof B2NotFoundException) {
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return Optional.empty();
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} else {
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throw new IOException(e);
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}
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}
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}
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@Override
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public Optional<MetaInfo> readMetaInfo(String mapId, String name) throws IOException {
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String path = getMetaFilePath(mapId, name);
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try {
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B2FileVersion info = client.getFileInfoByName(bucket, path);
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return Optional.of(new MetaInfo() {
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@Override
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public InputStream readMeta() throws IOException {
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return B2Storage.this.readMeta(mapId, name)
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.orElseThrow(() -> new IOException("Meta no longer present!"));
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}
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@Override
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public long getSize() {
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return info.getContentLength();
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}
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});
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} catch (B2Exception e) {
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if (e instanceof B2NotFoundException) {
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return Optional.empty();
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} else {
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throw new IOException(e);
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}
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}
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}
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@Override
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public void deleteMeta(String mapId, String name) throws IOException {
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String path = getMetaFilePath(mapId, name);
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try {
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client.hideFile(bucket, path);
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} catch (B2Exception e) {
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if (!(e instanceof B2NotFoundException)) {
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throw new IOException(e);
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}
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}
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}
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@Override
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public void purgeMap(String mapId, Function<ProgressInfo, Boolean> onProgress) throws IOException {
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String directory = getFilePath(mapId);
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try {
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B2ListFilesIterable files = client.fileNames(B2ListFileNamesRequest.builder(bucket).setWithinFolder(directory).build());
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List<B2FileVersion> filesList = StreamSupport.stream(files.spliterator(), false).collect(Collectors.toList());
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for (int i = 0; i < filesList.size(); i++) {
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var file = filesList.get(i);
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client.hideFile(bucket, file.getFileName());
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if (!onProgress.apply(
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new ProgressInfo((double) (i + 1) / filesList.size())
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)) return;
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}
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} catch (B2Exception e) {
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if (!(e instanceof B2NotFoundException)) {
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throw new IOException(e);
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}
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}
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}
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@Override
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public Collection<String> collectMapIds() throws IOException {
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try {
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B2ListFilesIterable files = client.fileNames(B2ListFileNamesRequest.builder(bucket).setDelimiter("/").build());
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List<String> ids = new ArrayList<>();
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for (var file: files) {
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String id = file.getFileName().split("/")[0];
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if (!ids.contains(id)) {
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ids.add(id);
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}
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}
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return ids;
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} catch (B2Exception e) {
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throw new IOException(e);
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}
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}
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@Override
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public boolean isClosed() {
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return closed;
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}
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@Override
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public void close() throws IOException {
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this.closed = true;
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client.close();
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}
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public String getFileMime(int lod){
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if (lod == 0) {
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if (hiresCompression.getFileSuffix().equals(".gz")) {
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return "application/gzip";
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} else if (hiresCompression == Compression.NONE) {
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return "application/json";
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} else {
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return "application/octet-stream";
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}
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} else {
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return "image/png";
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}
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}
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public String getFilePath(String mapId, int lod, Vector2i tile){
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String path = "x" + tile.getX() + "z" + tile.getY();
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char[] cs = path.toCharArray();
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List<String> folders = new ArrayList<>();
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StringBuilder folder = new StringBuilder();
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for (char c : cs){
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folder.append(c);
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if (c >= '0' && c <= '9'){
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folders.add(folder.toString());
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folder.delete(0, folder.length());
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}
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}
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String fileName = folders.remove(folders.size() - 1);
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String p = getFilePath(mapId) + "/tiles/" + Integer.toString(lod);
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for (String s : folders){
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p += "/" + s;
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}
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if (lod == 0) {
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return p + "/" + (fileName + ".json" + hiresCompression.getFileSuffix());
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} else {
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return p + "/" + (fileName + ".png");
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}
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}
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public String getFilePath(String mapId) {
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return mapId;
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}
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public String getMetaFilePath(String mapId, String name) {
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return getFilePath(mapId) + "/" + escapeMetaName(name);
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}
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}
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