timmyyao commented on code in PR #5916: URL: https://github.com/apache/paimon/pull/5916#discussion_r2218542972
########## paimon-vfs/paimon-vfs-hadoop/src/main/java/org/apache/paimon/vfs/hadoop/PaimonVirtualFileSystem.java: ########## @@ -0,0 +1,418 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.paimon.vfs.hadoop; + +import org.apache.paimon.catalog.CatalogContext; +import org.apache.paimon.catalog.Database; +import org.apache.paimon.catalog.TableMetadata; +import org.apache.paimon.fs.PositionOutputStream; +import org.apache.paimon.options.CatalogOptions; +import org.apache.paimon.options.Options; +import org.apache.paimon.rest.RESTCatalogOptions; +import org.apache.paimon.vfs.TableNotFoundException; +import org.apache.paimon.vfs.VFSCatalogIdentifier; +import org.apache.paimon.vfs.VFSDatabaseIdentifier; +import org.apache.paimon.vfs.VFSIdentifier; +import org.apache.paimon.vfs.VFSOperations; +import org.apache.paimon.vfs.VFSTableIdentifier; +import org.apache.paimon.vfs.VFSTableObjectIdentifier; +import org.apache.paimon.vfs.VFSTableRootIdentifier; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.FSDataInputStream; +import org.apache.hadoop.fs.FSDataOutputStream; +import org.apache.hadoop.fs.FileStatus; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.fs.permission.FsPermission; +import org.apache.hadoop.util.Progressable; + +import java.io.FileNotFoundException; +import java.io.IOException; +import java.net.URI; +import java.util.List; + +/** Paimon virtual file system. */ +public class PaimonVirtualFileSystem extends FileSystem { + private Path workingDirectory; + private URI uri; + private VFSOperations vfsOperations; + private Configuration conf; + + @Override + public void initialize(URI uri, Configuration conf) throws IOException { + setConf(conf); + this.conf = conf; + super.initialize(uri, conf); + + this.workingDirectory = new Path(uri); + this.uri = URI.create(uri.getScheme() + "://" + uri.getAuthority() + "/"); + + initVFSOperations(); + } + + private void initVFSOperations() { + Options options = new Options(); + String fsUri = getConf().get(PaimonVirtualFileSystemConfiguration.FS_URI); + if (fsUri == null) { + throw new IllegalArgumentException("fs.pas.uri is not configured"); + } else { + options.set(RESTCatalogOptions.URI, fsUri); + } + String tokenProvider = + getConf().get(PaimonVirtualFileSystemConfiguration.FS_TOKEN_PROVIDER); + if (tokenProvider == null) { + throw new IllegalArgumentException("fs.pas.token.provider is not configured"); + } else { + options.set(RESTCatalogOptions.TOKEN_PROVIDER, tokenProvider); + } + String token = getConf().get(PaimonVirtualFileSystemConfiguration.FS_TOKEN); + if (token != null) { + options.set(RESTCatalogOptions.TOKEN, token); + } + String accessKeyId = + getConf().get(PaimonVirtualFileSystemConfiguration.FS_DLF_ACCESS_KEY_ID); + String accessKeySecret = + getConf().get(PaimonVirtualFileSystemConfiguration.FS_DLF_ACCESS_KEY_SECRET); + String tokenLoader = + getConf().get(PaimonVirtualFileSystemConfiguration.FS_DLF_TOKEN_LOADER); + if (tokenLoader != null) { + options.set(RESTCatalogOptions.DLF_TOKEN_LOADER, tokenLoader); + } else if (accessKeyId != null && accessKeySecret != null) { + options.set(RESTCatalogOptions.DLF_ACCESS_KEY_ID, accessKeyId); + options.set(RESTCatalogOptions.DLF_ACCESS_KEY_SECRET, accessKeySecret); + } + String regionId = getConf().get(PaimonVirtualFileSystemConfiguration.FS_DLF_REGION); + if (regionId != null) { + options.set(RESTCatalogOptions.DLF_REGION, regionId); + } + // pas://catalog_name/database_name/table_name/file, so uri authority is catalog name + options.set(CatalogOptions.WAREHOUSE, uri.getAuthority()); + + CatalogContext catalogContext = CatalogContext.create(options); + vfsOperations = new VFSOperations(catalogContext); + } + + private String getVirtualPath(Path path) { + Path qualifiedPath = path.makeQualified(uri, workingDirectory); + // convert to absolute path, like /database_name/table_name/file + return qualifiedPath.toUri().getPath(); + } + + @Override + public FSDataOutputStream create( + Path f, + FsPermission permission, + boolean overwrite, + int bufferSize, + short replication, + long blockSize, + Progressable progress) + throws IOException { + VFSIdentifier vfsIdentifier = vfsOperations.getVFSIdentifier(getVirtualPath(f)); + if (vfsIdentifier instanceof VFSCatalogIdentifier) { + throw new IOException( + "Cannot create file for virtual path " + f + " which is a catalog"); + } else if (vfsIdentifier instanceof VFSDatabaseIdentifier) { + throw new IOException( + "Cannot create file for virtual path " + f + " which is a database"); + } else if (vfsIdentifier instanceof VFSTableRootIdentifier) { + throw new IOException( + "Cannot create file for table level virtual path " + f + " which is a table"); + } else { + VFSTableObjectIdentifier vfsTableObjectIdentifier = + (VFSTableObjectIdentifier) vfsIdentifier; + if (!vfsTableObjectIdentifier.isTableExist()) { + throw new IOException( + "Cannot create a file for virtual path " + + f + + " which is not in an existing table"); + } + PositionOutputStream out = + vfsTableObjectIdentifier + .fileIO() + .newOutputStream(vfsTableObjectIdentifier.getRealPath(), overwrite); + return new FSDataOutputStream(out, statistics); + } + } + + @Override + public FSDataInputStream open(Path path, int bufferSize) throws IOException { + VFSIdentifier vfsIdentifier = vfsOperations.getVFSIdentifier(getVirtualPath(path)); + if (vfsIdentifier instanceof VFSCatalogIdentifier) { + throw new IOException( + "Cannot open file for virtual path " + path + " which is a catalog"); + } else if (vfsIdentifier instanceof VFSDatabaseIdentifier) { + throw new IOException( + "Cannot open file for virtual path " + path + " which is a database"); + } else if (vfsIdentifier instanceof VFSTableRootIdentifier) { + throw new IOException( + "Cannot open file for table level virtual path " + path + " which is a table"); + } else { + VFSTableObjectIdentifier vfsTableObjectIdentifier = + (VFSTableObjectIdentifier) vfsIdentifier; + if (!vfsTableObjectIdentifier.isTableExist()) { + throw new IOException( + "Cannot open file for virtual path " + + path + + " which is not in an existing table"); + } + VFSInputStream in = + new VFSInputStream( + vfsTableObjectIdentifier + .fileIO() + .newInputStream(vfsTableObjectIdentifier.getRealPath())); + return new FSDataInputStream(in); + } + } + + @Override + public FSDataOutputStream append(Path f, int bufferSize, Progressable progress) + throws IOException { + throw new IOException("Append is not supported"); + } + + @Override + public boolean rename(Path src, Path dst) throws IOException { + VFSIdentifier srcVfsIdentifier = vfsOperations.getVFSIdentifier(getVirtualPath(src)); + VFSIdentifier dstVfsIdentifier = vfsOperations.getVFSIdentifier(getVirtualPath(dst)); + if (srcVfsIdentifier instanceof VFSCatalogIdentifier) { + throw new IOException("Cannot rename from virtual path " + src + " which is a catalog"); + } else if (srcVfsIdentifier instanceof VFSDatabaseIdentifier) { + throw new IOException( + "Cannot rename from virtual path " + src + " which is a database"); + } else if (srcVfsIdentifier instanceof VFSTableRootIdentifier) { + throw new IOException("Cannot rename from virtual path " + src + " which is a table"); Review Comment: Same as delete api. Shall we support all types of table, or only support object table? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@paimon.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
