snleee commented on a change in pull request #5116: Add Azure Data Lake Gen2 connector for PinotFS URL: https://github.com/apache/incubator-pinot/pull/5116#discussion_r389151923
########## File path: pinot-plugins/pinot-file-system/pinot-adls/src/main/java/org/apache/pinot/plugin/filesystem/AzureGen2PinotFS.java ########## @@ -0,0 +1,447 @@ +/** + * 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.pinot.plugin.filesystem; + +import com.azure.core.http.rest.PagedIterable; +import com.azure.core.util.Context; +import com.azure.storage.blob.BlobClient; +import com.azure.storage.blob.BlobServiceClient; +import com.azure.storage.blob.BlobServiceClientBuilder; +import com.azure.storage.common.StorageSharedKeyCredential; +import com.azure.storage.common.Utility; +import com.azure.storage.file.datalake.DataLakeFileClient; +import com.azure.storage.file.datalake.DataLakeFileSystemClient; +import com.azure.storage.file.datalake.DataLakeServiceClient; +import com.azure.storage.file.datalake.DataLakeServiceClientBuilder; +import com.azure.storage.file.datalake.models.DataLakeRequestConditions; +import com.azure.storage.file.datalake.models.DataLakeStorageException; +import com.azure.storage.file.datalake.models.ListPathsOptions; +import com.azure.storage.file.datalake.models.PathHttpHeaders; +import com.azure.storage.file.datalake.models.PathItem; +import com.azure.storage.file.datalake.models.PathProperties; +import java.io.ByteArrayInputStream; +import java.io.File; +import java.io.FileInputStream; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.URI; +import java.net.URISyntaxException; +import java.net.URLDecoder; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; +import java.sql.Timestamp; +import java.time.OffsetDateTime; +import java.time.ZoneOffset; +import java.util.Arrays; +import java.util.Map; +import org.apache.commons.configuration.Configuration; +import org.apache.commons.io.FileUtils; +import org.apache.pinot.spi.filesystem.PinotFS; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + + +/** + * Azure Data Lake Storage Gen2 implementation for the PinotFS interface. + */ +public class AzureGen2PinotFS extends PinotFS { + private static final Logger LOGGER = LoggerFactory.getLogger(AzureGen2PinotFS.class); + + private static final String ACCOUNT_NAME = "accountName"; + private static final String ACCESS_KEY = "accessKey"; + private static final String FILE_SYSTEM_NAME = "fileSystemName"; + + private static final String HTTPS_URL_PREFIX = "https://";; + private static final String DIRECTORY_DELIMITER = "/"; + + private static final String AZURE_STORAGE_DNS_SUFFIX = ".dfs.core.windows.net"; + private static final String AZURE_BLOB_DNS_SUFFIX = ".blob.core.windows.net"; + private static final String PATH_ALREADY_EXISTS_ERROR_CODE = "PathAlreadyExists"; + private static final String IS_DIRECTORY_KEY = "hdi_isfolder"; + + private static final int NOT_FOUND_STATUS_CODE = 404; + private static final int ALREADY_EXISTS_STATUS_CODE = 409; + + // Azure Data Lake Gen2's block size is 4MB + private static final int BUFFER_SIZE = 4 * 1024 * 1024; + + private DataLakeFileSystemClient _fileSystemClient; + private BlobServiceClient _blobServiceClient; + + @Override + public void init(Configuration config) { + // Azure storage account name + String accountName = config.getString(ACCOUNT_NAME); + String accessKey = config.getString(ACCESS_KEY); + String fileSystemName = config.getString(FILE_SYSTEM_NAME); + String dfsServiceEndpointUrl = HTTPS_URL_PREFIX + accountName + AZURE_STORAGE_DNS_SUFFIX; + String blobServiceEndpointUrl = HTTPS_URL_PREFIX + accountName + AZURE_BLOB_DNS_SUFFIX; + + StorageSharedKeyCredential sharedKeyCredential = new StorageSharedKeyCredential(accountName, accessKey); + + DataLakeServiceClient serviceClient = new DataLakeServiceClientBuilder().credential(sharedKeyCredential) + .endpoint(dfsServiceEndpointUrl) + .buildClient(); + + _blobServiceClient = + new BlobServiceClientBuilder().credential(sharedKeyCredential).endpoint(blobServiceEndpointUrl).buildClient(); + _fileSystemClient = serviceClient.getFileSystemClient(fileSystemName); + LOGGER.info("AzureGen2PinotFS is initialized (accountName={}, fileSystemName={}, dfsServiceEndpointUrl={}, " + + "blobServiceEndpointUrl={})", accountName, fileSystemName, dfsServiceEndpointUrl, blobServiceEndpointUrl); + } + + @Override + public boolean mkdir(URI uri) throws IOException { + LOGGER.info("mkdir is called with uri='{}'", uri); + try { + // By default, create directory call will overwrite if the path already exists. Setting IfNoneMatch = "*" to + // prevent overwrite. https://docs.microsoft.com/en-us/rest/api/storageservices/datalakestoragegen2/path/create + DataLakeRequestConditions requestConditions = new DataLakeRequestConditions().setIfNoneMatch("*"); + _fileSystemClient.createDirectoryWithResponse(convertUriToAzureStylePath(uri), null, null, null, null, + requestConditions, null, null); + return true; + } catch (DataLakeStorageException e) { + // If the path already exists, doing nothing and return true + if (e.getStatusCode() == ALREADY_EXISTS_STATUS_CODE && e.getErrorCode().equals(PATH_ALREADY_EXISTS_ERROR_CODE)) { + return true; + } + LOGGER.error("Exception thrown while calling mkdir.", e); + throw new IOException(e); + } + } + + @Override + public boolean delete(URI segmentUri, boolean forceDelete) throws IOException { + LOGGER.info("delete is called with segmentUri='{}', forceDelete='{}'", segmentUri, forceDelete); + try { + boolean isDirectory = isDirectory(segmentUri); + if (isDirectory && listFiles(segmentUri, false).length > 0 && !forceDelete) { + return false; + } + + String path = convertUriToAzureStylePath(segmentUri); + if (isDirectory) { + _fileSystemClient.deleteDirectoryWithResponse(path, true, null, null, Context.NONE).getValue(); + } else { + _fileSystemClient.deleteFile(path); + } + return true; + } catch (DataLakeStorageException e) { + throw new IOException(e); + } + } + + @Override + public boolean doMove(URI srcUri, URI dstUri) throws IOException { + LOGGER.info("doMove is called with srcUri='{}', dstUri='{}'", srcUri, dstUri); + try { + // TODO: currently, azure-sdk has a bug in "rename" when the path includes some special characters that gets + // changed during the url encoding (e.g '%' -> '%25', ' ' -> '%20') + // https://github.com/Azure/azure-sdk-for-java/issues/8761 +// DataLakeDirectoryClient directoryClient = +// _fileSystemClient.getDirectoryClient(convertUriToAzureStylePath(srcUri)); +// directoryClient.rename(null, convertUriToAzureStylePath(dstUri)); + copy(srcUri, dstUri); + delete(srcUri, true); + return true; + } catch (DataLakeStorageException e) { + throw new IOException(e); + } + } + + @Override + public boolean copy(URI srcUri, URI dstUri) throws IOException { + LOGGER.info("copy is called with srcUri='{}', dstUri='{}'", srcUri, dstUri); + // If src and dst are the same, do nothing. + if (srcUri.equals(dstUri)) { + return true; + } + + // Remove the destination directory or file + if (exists(dstUri)) { + delete(dstUri, true); + } + + if (!isDirectory(srcUri)) { + // If source is a file, we can simply copy the file from src to dst + return copySrcToDst(srcUri, dstUri); + } else { + // In case we are copying a directory, we need to recursively look into the directory and copy all the files and + // directories accordingly + try { + boolean copySucceeded = false; + Path srcPath = Paths.get(srcUri.getPath()); + for (String path : listFiles(srcUri, true)) { + // Compute the src path for the given path + URI currentSrc = + new URI(srcUri.getScheme(), srcUri.getHost(), convertAzureStylePathToUriStylePath(path), null); + + // Compute the destination path for the current path. + String relativeSrcPath = srcPath.relativize(Paths.get(convertAzureStylePathToUriStylePath(path))).toString(); + String newDstPath = Paths.get(dstUri.getPath(), relativeSrcPath).toString(); + URI newDst = new URI(dstUri.getScheme(), dstUri.getHost(), newDstPath, null); + + if (isDirectory(currentSrc)) { + // If src is directory, create one. + if (!mkdir(newDst)) { + return false; + } + } else { + // If src is a file, we need to copy. + copySucceeded |= copySrcToDst(currentSrc, newDst); + } + } + return copySucceeded; + } catch (DataLakeStorageException | URISyntaxException e) { + throw new IOException(e); + } + } + } + + @Override + public boolean exists(URI fileUri) throws IOException { + try { + _fileSystemClient.getDirectoryClient(convertUriToAzureStylePath(fileUri)).getProperties(); + return true; + } catch (DataLakeStorageException e) { + if (e.getStatusCode() == NOT_FOUND_STATUS_CODE) { + return false; + } + throw new IOException(e); + } + } + + @Override + public long length(URI fileUri) throws IOException { + try { + PathProperties pathProperties = + _fileSystemClient.getDirectoryClient(convertUriToAzureStylePath(fileUri)).getProperties(); + return pathProperties.getFileSize(); + } catch (DataLakeStorageException e) { + throw new IOException(e); + } + } + + @Override + public String[] listFiles(URI fileUri, boolean recursive) throws IOException { + LOGGER.info("listFiles is called with fileUri='{}', recursive='{}'", fileUri, recursive); + try { + ListPathsOptions options = + new ListPathsOptions().setPath(convertUriToAzureStylePath(fileUri)).setRecursive(recursive); + PagedIterable<PathItem> iter = _fileSystemClient.listPaths(options, null); + return iter.stream().map(PathItem::getName).toArray(String[]::new); + } catch (DataLakeStorageException e) { + throw new IOException(e); + } + } + + @Override + public void copyToLocalFile(URI srcUri, File dstFile) throws Exception { + LOGGER.info("copyToLocalFile is called with srcUri='{}', dstFile='{}'", srcUri, dstFile); + if (dstFile.exists()) { + if (dstFile.isDirectory()) { + FileUtils.deleteDirectory(dstFile); + } else { + FileUtils.deleteQuietly(dstFile); + } + } + + MessageDigest md5File = MessageDigest.getInstance("MD5"); + int bytesRead; + byte[] buffer = new byte[BUFFER_SIZE]; + try (InputStream inputStream = open(srcUri)) { + try (OutputStream outputStream = new FileOutputStream(dstFile)) { + while ((bytesRead = inputStream.read(buffer)) != -1) { + outputStream.write(buffer, 0, bytesRead); + md5File.update(buffer, 0, bytesRead); Review comment: will check md5 hash compute time but i think that this should be very quick ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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