HADOOP-16269. ABFS: add listFileStatus with StartFrom.
Author: Da Zhou
This commit is contained in:
Da Zhou
Steve Loughran
parent
9b0aace1e6
commit
3418bbbb59
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@ -32,6 +32,7 @@ import java.nio.charset.CharacterCodingException;
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import java.nio.charset.Charset;
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import java.nio.charset.CharsetDecoder;
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import java.nio.charset.CharsetEncoder;
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import java.nio.charset.StandardCharsets;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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@ -47,6 +48,7 @@ import java.util.Set;
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import com.google.common.annotations.VisibleForTesting;
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import com.google.common.base.Preconditions;
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import com.google.common.base.Strings;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.classification.InterfaceStability;
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@ -81,6 +83,7 @@ import org.apache.hadoop.fs.azurebfs.services.AuthType;
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import org.apache.hadoop.fs.azurebfs.services.ExponentialRetryPolicy;
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import org.apache.hadoop.fs.azurebfs.services.SharedKeyCredentials;
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import org.apache.hadoop.fs.azurebfs.utils.Base64;
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import org.apache.hadoop.fs.azurebfs.utils.CRC64;
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import org.apache.hadoop.fs.azurebfs.utils.UriUtils;
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import org.apache.hadoop.fs.permission.AclEntry;
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import org.apache.hadoop.fs.permission.AclStatus;
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@ -92,7 +95,17 @@ import org.apache.http.client.utils.URIBuilder;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.CHAR_EQUALS;
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import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.CHAR_FORWARD_SLASH;
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import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.CHAR_HYPHEN;
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import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.CHAR_PLUS;
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import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.CHAR_STAR;
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import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.CHAR_UNDERSCORE;
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import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.ROOT_PATH;
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import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.SINGLE_WHITE_SPACE;
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import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.TOKEN_VERSION;
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import static org.apache.hadoop.fs.azurebfs.constants.ConfigurationKeys.AZURE_ABFS_ENDPOINT;
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/**
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* Provides the bridging logic between Hadoop's abstract filesystem and Azure Storage.
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*/
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@ -106,6 +119,7 @@ public class AzureBlobFileSystemStore implements Closeable {
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private String userName;
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private String primaryUserGroup;
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private static final String DATE_TIME_PATTERN = "E, dd MMM yyyy HH:mm:ss 'GMT'";
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private static final String TOKEN_DATE_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSSSSSS'Z'";
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private static final String XMS_PROPERTIES_ENCODING = "ISO-8859-1";
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private static final int LIST_MAX_RESULTS = 500;
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@ -522,15 +536,43 @@ public class AzureBlobFileSystemStore implements Closeable {
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eTag);
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}
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/**
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* @param path The list path.
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* @return the entries in the path.
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* */
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public FileStatus[] listStatus(final Path path) throws IOException {
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LOG.debug("listStatus filesystem: {} path: {}",
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return listStatus(path, null);
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}
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/**
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* @param path Path the list path.
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* @param startFrom the entry name that list results should start with.
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* For example, if folder "/folder" contains four files: "afile", "bfile", "hfile", "ifile".
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* Then listStatus(Path("/folder"), "hfile") will return "/folder/hfile" and "folder/ifile"
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* Notice that if startFrom is a non-existent entry name, then the list response contains
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* all entries after this non-existent entry in lexical order:
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* listStatus(Path("/folder"), "cfile") will return "/folder/hfile" and "/folder/ifile".
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*
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* @return the entries in the path start from "startFrom" in lexical order.
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* */
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@InterfaceStability.Unstable
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public FileStatus[] listStatus(final Path path, final String startFrom) throws IOException {
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LOG.debug("listStatus filesystem: {} path: {}, startFrom: {}",
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client.getFileSystem(),
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path);
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path,
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startFrom);
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String relativePath = path.isRoot() ? AbfsHttpConstants.EMPTY_STRING : getRelativePath(path);
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final String relativePath = path.isRoot() ? AbfsHttpConstants.EMPTY_STRING : getRelativePath(path);
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String continuation = null;
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ArrayList<FileStatus> fileStatuses = new ArrayList<>();
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// generate continuation token if a valid startFrom is provided.
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if (startFrom != null && !startFrom.isEmpty()) {
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continuation = getIsNamespaceEnabled()
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? generateContinuationTokenForXns(startFrom)
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: generateContinuationTokenForNonXns(path.isRoot() ? ROOT_PATH : relativePath, startFrom);
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}
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ArrayList<FileStatus> fileStatuses = new ArrayList<>();
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do {
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AbfsRestOperation op = client.listPath(relativePath, false, LIST_MAX_RESULTS, continuation);
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continuation = op.getResult().getResponseHeader(HttpHeaderConfigurations.X_MS_CONTINUATION);
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@ -583,6 +625,61 @@ public class AzureBlobFileSystemStore implements Closeable {
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return fileStatuses.toArray(new FileStatus[fileStatuses.size()]);
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}
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// generate continuation token for xns account
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private String generateContinuationTokenForXns(final String firstEntryName) {
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Preconditions.checkArgument(!Strings.isNullOrEmpty(firstEntryName)
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&& !firstEntryName.startsWith(AbfsHttpConstants.ROOT_PATH),
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"startFrom must be a dir/file name and it can not be a full path");
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StringBuilder sb = new StringBuilder();
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sb.append(firstEntryName).append("#$").append("0");
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CRC64 crc64 = new CRC64();
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StringBuilder token = new StringBuilder();
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token.append(crc64.compute(sb.toString().getBytes(StandardCharsets.UTF_8)))
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.append(SINGLE_WHITE_SPACE)
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.append("0")
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.append(SINGLE_WHITE_SPACE)
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.append(firstEntryName);
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return Base64.encode(token.toString().getBytes(StandardCharsets.UTF_8));
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}
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// generate continuation token for non-xns account
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private String generateContinuationTokenForNonXns(final String path, final String firstEntryName) {
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Preconditions.checkArgument(!Strings.isNullOrEmpty(firstEntryName)
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&& !firstEntryName.startsWith(AbfsHttpConstants.ROOT_PATH),
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"startFrom must be a dir/file name and it can not be a full path");
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// Notice: non-xns continuation token requires full path (first "/" is not included) for startFrom
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final String startFrom = (path.isEmpty() || path.equals(ROOT_PATH))
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? firstEntryName
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: path + ROOT_PATH + firstEntryName;
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SimpleDateFormat simpleDateFormat = new SimpleDateFormat(TOKEN_DATE_PATTERN, Locale.US);
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String date = simpleDateFormat.format(new Date());
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String token = String.format("%06d!%s!%06d!%s!%06d!%s!",
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path.length(), path, startFrom.length(), startFrom, date.length(), date);
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String base64EncodedToken = Base64.encode(token.getBytes(StandardCharsets.UTF_8));
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StringBuilder encodedTokenBuilder = new StringBuilder(base64EncodedToken.length() + 5);
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encodedTokenBuilder.append(String.format("%s!%d!", TOKEN_VERSION, base64EncodedToken.length()));
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for (int i = 0; i < base64EncodedToken.length(); i++) {
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char current = base64EncodedToken.charAt(i);
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if (CHAR_FORWARD_SLASH == current) {
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current = CHAR_UNDERSCORE;
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} else if (CHAR_PLUS == current) {
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current = CHAR_STAR;
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} else if (CHAR_EQUALS == current) {
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current = CHAR_HYPHEN;
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}
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encodedTokenBuilder.append(current);
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}
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return encodedTokenBuilder.toString();
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}
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public void setOwner(final Path path, final String owner, final String group) throws
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AzureBlobFileSystemException {
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if (!getIsNamespaceEnabled()) {
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@ -1002,7 +1099,7 @@ public class AzureBlobFileSystemStore implements Closeable {
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FileStatus other = (FileStatus) obj;
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if (!other.equals(this)) {// compare the path
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if (!this.getPath().equals(other.getPath())) {// compare the path
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return false;
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}
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@ -39,6 +39,7 @@ public final class AbfsHttpConstants {
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public static final String GET_ACCESS_CONTROL = "getAccessControl";
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public static final String GET_STATUS = "getStatus";
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public static final String DEFAULT_TIMEOUT = "90";
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public static final String TOKEN_VERSION = "2";
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public static final String JAVA_VERSION = "java.version";
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public static final String OS_NAME = "os.name";
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@ -91,5 +92,13 @@ public final class AbfsHttpConstants {
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public static final String PERMISSION_FORMAT = "%04d";
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public static final String SUPER_USER = "$superuser";
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public static final char CHAR_FORWARD_SLASH = '/';
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public static final char CHAR_EXCLAMATION_POINT = '!';
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public static final char CHAR_UNDERSCORE = '_';
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public static final char CHAR_HYPHEN = '-';
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public static final char CHAR_EQUALS = '=';
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public static final char CHAR_STAR = '*';
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public static final char CHAR_PLUS = '+';
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private AbfsHttpConstants() {}
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}
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@ -0,0 +1,60 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.fs.azurebfs.utils;
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/**
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* CRC64 implementation for AzureBlobFileSystem.
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*/
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public class CRC64 {
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private static final long POLY = 0x9a6c9329ac4bc9b5L;
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private static final int TABLE_LENGTH = 256;
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private static final long[] TABLE = new long[TABLE_LENGTH];
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private long value = -1;
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/**
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* @param input byte arrays.
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* @return long value of the CRC-64 checksum of the data.
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* */
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public long compute(byte[] input) {
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init();
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for (int i = 0; i < input.length; i++) {
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value = TABLE[(input[i] ^ (int) value) & 0xFF] ^ (value >>> 8);
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}
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return ~value;
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}
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/*
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* Initialize a table constructed from POLY (0x9a6c9329ac4bc9b5L).
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* */
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private void init() {
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value = -1;
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for (int n = 0; n < TABLE_LENGTH; ++n) {
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long crc = n;
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for (int i = 0; i < 8; ++i) {
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if ((crc & 1) == 1) {
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crc = (crc >>> 1) ^ POLY;
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} else {
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crc >>>= 1;
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}
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}
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TABLE[n] = crc;
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}
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}
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}
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@ -24,7 +24,6 @@ import java.util.Hashtable;
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import java.util.UUID;
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import java.util.concurrent.Callable;
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import com.google.common.base.Preconditions;
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import org.junit.After;
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import org.junit.Before;
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import org.slf4j.Logger;
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@ -211,9 +210,9 @@ public abstract class AbstractAbfsIntegrationTest extends
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* @throws IOException failure during create/init.
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*/
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public AzureBlobFileSystem createFileSystem() throws IOException {
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Preconditions.checkState(abfs == null,
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"existing ABFS instance exists: %s", abfs);
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abfs = (AzureBlobFileSystem) FileSystem.newInstance(rawConfig);
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if (abfs == null) {
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abfs = (AzureBlobFileSystem) FileSystem.newInstance(rawConfig);
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}
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return abfs;
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}
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@ -0,0 +1,151 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.fs.azurebfs;
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import java.io.IOException;
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import java.util.Arrays;
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import org.junit.Assert;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.Parameterized;
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import org.apache.hadoop.fs.contract.ContractTestUtils;
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import org.apache.hadoop.fs.FileStatus;
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import org.apache.hadoop.fs.Path;
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/**
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* Test AzureBlobFileSystemStore listStatus with startFrom.
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* */
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@RunWith(Parameterized.class)
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public class ITestAzureBlobFileSystemStoreListStatusWithRange extends
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AbstractAbfsIntegrationTest {
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private static final boolean SUCCEED = true;
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private static final boolean FAIL = false;
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private static final String[] SORTED_ENTRY_NAMES = {"1_folder", "A0", "D01", "a+", "c0", "name5"};
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private AzureBlobFileSystemStore store;
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private AzureBlobFileSystem fs;
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@Parameterized.Parameter
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public String path;
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/**
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* A valid startFrom for listFileStatus with range is a non-fully qualified dir/file name
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* */
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@Parameterized.Parameter(1)
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public String startFrom;
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@Parameterized.Parameter(2)
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public int expectedStartIndexInArray;
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@Parameterized.Parameter(3)
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public boolean expectedResult;
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@Parameterized.Parameters(name = "Testing path \"{0}\", startFrom: \"{1}\", Expecting result : {3}") // Test path
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public static Iterable<Object[]> params() {
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return Arrays.asList(
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new Object[][]{
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// case 0: list in root, without range
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{"/", null, 0, SUCCEED},
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// case 1: list in the root, start from the second file
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{"/", SORTED_ENTRY_NAMES[1], 1, SUCCEED},
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// case 2: list in the root, invalid startFrom
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{"/", "/", -1, FAIL},
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// case 3: list in non-root level, valid startFrom : dir name
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{"/" + SORTED_ENTRY_NAMES[2], SORTED_ENTRY_NAMES[1], 1, SUCCEED},
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// case 4: list in non-root level, valid startFrom : file name
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{"/" + SORTED_ENTRY_NAMES[2], SORTED_ENTRY_NAMES[2], 2, SUCCEED},
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// case 5: list in non root level, invalid startFrom
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{"/" + SORTED_ENTRY_NAMES[2], "/" + SORTED_ENTRY_NAMES[3], -1, FAIL},
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// case 6: list using non existent startFrom, startFrom is smaller than the entries in lexical order
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// expecting return all entries
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{"/" + SORTED_ENTRY_NAMES[2], "0-non-existent", 0, SUCCEED},
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// case 7: list using non existent startFrom, startFrom is larger than the entries in lexical order
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// expecting return 0 entries
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{"/" + SORTED_ENTRY_NAMES[2], "z-non-existent", -1, SUCCEED},
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// case 8: list using non existent startFrom, startFrom is in the range
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{"/" + SORTED_ENTRY_NAMES[2], "A1", 2, SUCCEED}
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});
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}
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public ITestAzureBlobFileSystemStoreListStatusWithRange() throws Exception {
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super();
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if (this.getFileSystem() == null) {
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super.createFileSystem();
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}
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fs = this.getFileSystem();
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store = fs.getAbfsStore();
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prepareTestFiles();
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// Sort the names for verification, ABFS service should return the results in order.
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Arrays.sort(SORTED_ENTRY_NAMES);
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}
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@Test
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public void testListWithRange() throws IOException {
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try {
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FileStatus[] listResult = store.listStatus(new Path(path), startFrom);
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if (!expectedResult) {
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Assert.fail("Excepting failure with IllegalArgumentException");
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}
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verifyFileStatus(listResult, new Path(path), expectedStartIndexInArray);
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} catch (IllegalArgumentException ex) {
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if (expectedResult) {
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Assert.fail("Excepting success");
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}
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}
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}
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// compare the file status
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private void verifyFileStatus(FileStatus[] listResult, Path parentPath, int startIndexInSortedName) throws IOException {
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if (startIndexInSortedName == -1) {
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Assert.assertEquals("Expected empty FileStatus array", 0, listResult.length);
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return;
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}
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FileStatus[] allFileStatuses = fs.listStatus(parentPath);
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Assert.assertEquals("number of dir/file doesn't match",
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SORTED_ENTRY_NAMES.length, allFileStatuses.length);
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int indexInResult = 0;
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for (int index = startIndexInSortedName; index < SORTED_ENTRY_NAMES.length; index++) {
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Assert.assertEquals("fileStatus doesn't match", allFileStatuses[index], listResult[indexInResult++]);
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}
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}
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private void prepareTestFiles() throws IOException {
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final AzureBlobFileSystem fs = getFileSystem();
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// created 2 level file structures
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for (String levelOneFolder : SORTED_ENTRY_NAMES) {
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Path levelOnePath = new Path("/" + levelOneFolder);
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Assert.assertTrue(fs.mkdirs(levelOnePath));
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for (String fileName : SORTED_ENTRY_NAMES) {
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||||
Path filePath = new Path(levelOnePath, fileName);
|
||||
ContractTestUtils.touch(fs, filePath);
|
||||
ContractTestUtils.assertIsFile(fs, filePath);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
/**
|
||||
* 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.hadoop.fs.azurebfs;
|
||||
|
||||
import org.junit.Assert;
|
||||
import org.junit.Test;
|
||||
|
||||
import org.apache.hadoop.fs.azurebfs.utils.CRC64;
|
||||
/**
|
||||
* Test for Crc64 in AzureBlobFileSystem, notice that ABFS CRC64 has its own polynomial.
|
||||
* */
|
||||
public class TestAbfsCrc64 {
|
||||
|
||||
@Test
|
||||
public void tesCrc64Compute() {
|
||||
CRC64 crc64 = new CRC64();
|
||||
final String[] testStr = {"#$", "dir_2_ac83abee", "dir_42_976df1f5"};
|
||||
final String[] expected = {"f91f7e6a837dbfa8", "203f9fefc38ae97b", "cc0d56eafe58a855"};
|
||||
for (int i = 0; i < testStr.length; i++) {
|
||||
Assert.assertEquals(expected[i], Long.toHexString(crc64.compute(testStr[i].getBytes())));
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue