steveloughran commented on a change in pull request #1999: URL: https://github.com/apache/hadoop/pull/1999#discussion_r427437660
########## File path: hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/contract/sftp/SFTPContract.java ########## @@ -0,0 +1,108 @@ +/* + * 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.contract.sftp; + +import java.io.IOException; +import java.io.UncheckedIOException; +import java.net.URI; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.FileSystemTestHelper; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.fs.contract.AbstractFSContract; +import org.apache.hadoop.fs.sftp.SFTPFileSystem; +import org.apache.sshd.common.NamedFactory; +import org.apache.sshd.server.SshServer; +import org.apache.sshd.server.auth.UserAuth; +import org.apache.sshd.server.auth.password.UserAuthPasswordFactory; +import org.apache.sshd.server.keyprovider.SimpleGeneratorHostKeyProvider; +import org.apache.sshd.server.subsystem.sftp.SftpSubsystemFactory; + +public class SFTPContract extends AbstractFSContract { + + private String testDataDir = new FileSystemTestHelper().getTestRootDir(); + private Configuration conf; + public static final String CONTRACT_XML = "contract/sftp.xml"; + private SshServer sshd; + + public SFTPContract(Configuration conf) { + super(conf); + addConfResource(CONTRACT_XML); + this.conf = conf; + } + + @Override + public void init() throws IOException { + sshd = SshServer.setUpDefaultServer(); + // ask OS to assign a port + sshd.setPort(0); + sshd.setKeyPairProvider(new SimpleGeneratorHostKeyProvider()); + + List<NamedFactory<UserAuth>> userAuthFactories = new ArrayList<>(); + userAuthFactories.add(new UserAuthPasswordFactory()); + + sshd.setUserAuthFactories(userAuthFactories); + sshd.setPasswordAuthenticator((username, password, session) -> + username.equals("user") && password.equals("password") + ); + + sshd.setSubsystemFactories( + Collections.singletonList(new SftpSubsystemFactory())); + + sshd.start(); + int port = sshd.getPort(); + + conf.setClass("fs.sftp.impl", SFTPFileSystem.class, FileSystem.class); Review comment: shouldn't this be set in core-default.xml already? if not, sftp:// urls would break. (yes, i know every stack overflow spark example does this, but that is just superstition) ########## File path: hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/sftp/SFTPInputStream.java ########## @@ -15,86 +15,113 @@ * See the License for the specific language governing permissions and * limitations under the License. */ + package org.apache.hadoop.fs.sftp; +import java.io.EOFException; import java.io.IOException; import java.io.InputStream; +import java.io.UncheckedIOException; +import com.jcraft.jsch.ChannelSftp; +import com.jcraft.jsch.SftpATTRS; +import com.jcraft.jsch.SftpException; +import org.apache.hadoop.fs.FSExceptionMessages; import org.apache.hadoop.fs.FSInputStream; import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.Path; /** SFTP FileSystem input stream. */ class SFTPInputStream extends FSInputStream { - public static final String E_SEEK_NOTSUPPORTED = "Seek not supported"; - public static final String E_NULL_INPUTSTREAM = "Null InputStream"; - public static final String E_STREAM_CLOSED = "Stream closed"; - + private final ChannelSftp channel; + private final Path path; private InputStream wrappedStream; private FileSystem.Statistics stats; private boolean closed; private long pos; - - SFTPInputStream(InputStream stream, FileSystem.Statistics stats) { - - if (stream == null) { - throw new IllegalArgumentException(E_NULL_INPUTSTREAM); + private long nextPos; + private long contentLength; + + SFTPInputStream(ChannelSftp channel, Path path, FileSystem.Statistics stats) { + try { + this.channel = channel; + this.path = path; + this.stats = stats; + this.wrappedStream = channel.get(path.toUri().getPath()); + SftpATTRS stat = channel.lstat(path.toString()); + this.contentLength = stat.getSize(); + } catch (SftpException e) { + throw new UncheckedIOException(new IOException(e)); } - this.wrappedStream = stream; - this.stats = stats; + } - this.pos = 0; - this.closed = false; + @Override + public synchronized void seek(long position) throws IOException { + checkNotClosed(); + if (position < 0) { + throw new EOFException(FSExceptionMessages.NEGATIVE_SEEK); + } + nextPos = position; } @Override - public void seek(long position) throws IOException { - throw new IOException(E_SEEK_NOTSUPPORTED); + public synchronized int available() throws IOException { + checkNotClosed(); + long remaining = contentLength - nextPos; + if (remaining > Integer.MAX_VALUE) { + return Integer.MAX_VALUE; + } + return (int) remaining; + } + + private void seekInternal() throws IOException { + if (pos == nextPos) { + return; + } + if (nextPos > pos) { + long skipped = wrappedStream.skip(nextPos - pos); + pos = pos + skipped; + } + if (nextPos < pos) { + wrappedStream.close(); + try { + wrappedStream = channel.get(path.toUri().getPath()); + pos = wrappedStream.skip(nextPos); + } catch (SftpException e) { + throw new UncheckedIOException(new IOException(e)); Review comment: why the double wrap? ########## File path: hadoop-common-project/hadoop-common/src/test/resources/contract/sftp.xml ########## @@ -0,0 +1,79 @@ +<!-- + ~ 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. + --> + +<configuration> + <!-- + FTP -these options are for testing against a remote unix filesystem. Review comment: nit: sftp ########## File path: hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/sftp/SFTPInputStream.java ########## @@ -15,86 +15,113 @@ * See the License for the specific language governing permissions and * limitations under the License. */ + package org.apache.hadoop.fs.sftp; +import java.io.EOFException; import java.io.IOException; import java.io.InputStream; +import java.io.UncheckedIOException; +import com.jcraft.jsch.ChannelSftp; +import com.jcraft.jsch.SftpATTRS; +import com.jcraft.jsch.SftpException; +import org.apache.hadoop.fs.FSExceptionMessages; import org.apache.hadoop.fs.FSInputStream; import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.Path; /** SFTP FileSystem input stream. */ class SFTPInputStream extends FSInputStream { - public static final String E_SEEK_NOTSUPPORTED = "Seek not supported"; - public static final String E_NULL_INPUTSTREAM = "Null InputStream"; - public static final String E_STREAM_CLOSED = "Stream closed"; - + private final ChannelSftp channel; + private final Path path; private InputStream wrappedStream; private FileSystem.Statistics stats; private boolean closed; private long pos; - - SFTPInputStream(InputStream stream, FileSystem.Statistics stats) { - - if (stream == null) { - throw new IllegalArgumentException(E_NULL_INPUTSTREAM); + private long nextPos; + private long contentLength; + + SFTPInputStream(ChannelSftp channel, Path path, FileSystem.Statistics stats) { + try { + this.channel = channel; + this.path = path; + this.stats = stats; + this.wrappedStream = channel.get(path.toUri().getPath()); + SftpATTRS stat = channel.lstat(path.toString()); + this.contentLength = stat.getSize(); + } catch (SftpException e) { + throw new UncheckedIOException(new IOException(e)); Review comment: why the double wrap? ########## File path: hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/contract/sftp/SFTPContract.java ########## @@ -0,0 +1,108 @@ +/* + * 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.contract.sftp; + +import java.io.IOException; +import java.io.UncheckedIOException; +import java.net.URI; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.FileSystemTestHelper; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.fs.contract.AbstractFSContract; +import org.apache.hadoop.fs.sftp.SFTPFileSystem; +import org.apache.sshd.common.NamedFactory; +import org.apache.sshd.server.SshServer; +import org.apache.sshd.server.auth.UserAuth; +import org.apache.sshd.server.auth.password.UserAuthPasswordFactory; +import org.apache.sshd.server.keyprovider.SimpleGeneratorHostKeyProvider; +import org.apache.sshd.server.subsystem.sftp.SftpSubsystemFactory; + +public class SFTPContract extends AbstractFSContract { + + private String testDataDir = new FileSystemTestHelper().getTestRootDir(); + private Configuration conf; + public static final String CONTRACT_XML = "contract/sftp.xml"; + private SshServer sshd; + + public SFTPContract(Configuration conf) { + super(conf); + addConfResource(CONTRACT_XML); + this.conf = conf; + } + + @Override + public void init() throws IOException { + sshd = SshServer.setUpDefaultServer(); + // ask OS to assign a port + sshd.setPort(0); + sshd.setKeyPairProvider(new SimpleGeneratorHostKeyProvider()); + + List<NamedFactory<UserAuth>> userAuthFactories = new ArrayList<>(); + userAuthFactories.add(new UserAuthPasswordFactory()); + + sshd.setUserAuthFactories(userAuthFactories); + sshd.setPasswordAuthenticator((username, password, session) -> + username.equals("user") && password.equals("password") + ); + + sshd.setSubsystemFactories( + Collections.singletonList(new SftpSubsystemFactory())); + + sshd.start(); + int port = sshd.getPort(); + + conf.setClass("fs.sftp.impl", SFTPFileSystem.class, FileSystem.class); + conf.setInt("fs.sftp.host.port", port); + conf.setBoolean("fs.sftp.impl.disable.cache", true); + } + + @Override + public void teardown() throws IOException { + if (sshd != null) { + sshd.stop(); + } + } + + @Override + public FileSystem getTestFileSystem() throws IOException { + return FileSystem.get(URI.create("sftp://user:password@localhost";), conf); Review comment: nit: make a variable and reuse ########## File path: hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/contract/sftp/SFTPContract.java ########## @@ -0,0 +1,108 @@ +/* + * 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.contract.sftp; + +import java.io.IOException; +import java.io.UncheckedIOException; +import java.net.URI; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.FileSystemTestHelper; +import org.apache.hadoop.fs.Path; +import org.apache.hadoop.fs.contract.AbstractFSContract; +import org.apache.hadoop.fs.sftp.SFTPFileSystem; +import org.apache.sshd.common.NamedFactory; +import org.apache.sshd.server.SshServer; +import org.apache.sshd.server.auth.UserAuth; +import org.apache.sshd.server.auth.password.UserAuthPasswordFactory; +import org.apache.sshd.server.keyprovider.SimpleGeneratorHostKeyProvider; +import org.apache.sshd.server.subsystem.sftp.SftpSubsystemFactory; + +public class SFTPContract extends AbstractFSContract { + + private String testDataDir = new FileSystemTestHelper().getTestRootDir(); + private Configuration conf; + public static final String CONTRACT_XML = "contract/sftp.xml"; + private SshServer sshd; + + public SFTPContract(Configuration conf) { + super(conf); + addConfResource(CONTRACT_XML); + this.conf = conf; + } + + @Override + public void init() throws IOException { + sshd = SshServer.setUpDefaultServer(); + // ask OS to assign a port + sshd.setPort(0); + sshd.setKeyPairProvider(new SimpleGeneratorHostKeyProvider()); + + List<NamedFactory<UserAuth>> userAuthFactories = new ArrayList<>(); + userAuthFactories.add(new UserAuthPasswordFactory()); + + sshd.setUserAuthFactories(userAuthFactories); + sshd.setPasswordAuthenticator((username, password, session) -> + username.equals("user") && password.equals("password") + ); + + sshd.setSubsystemFactories( + Collections.singletonList(new SftpSubsystemFactory())); + + sshd.start(); + int port = sshd.getPort(); + + conf.setClass("fs.sftp.impl", SFTPFileSystem.class, FileSystem.class); + conf.setInt("fs.sftp.host.port", port); + conf.setBoolean("fs.sftp.impl.disable.cache", true); + } + + @Override + public void teardown() throws IOException { + if (sshd != null) { + sshd.stop(); + } + } + + @Override + public FileSystem getTestFileSystem() throws IOException { + return FileSystem.get(URI.create("sftp://user:password@localhost";), conf); + } + + @Override + public String getScheme() { + return "sftp"; + } + + @Override + public Path getTestPath() { Review comment: shame we didn't declare this as raising an ioe; probably too late now ########## File path: hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/sftp/SFTPFileSystem.java ########## @@ -516,16 +515,14 @@ public FSDataInputStream open(Path f, int bufferSize) throws IOException { disconnect(channel); throw new IOException(String.format(E_PATH_DIR, f)); } - InputStream is; try { // the path could be a symbolic link, so get the real path absolute = new Path("/", channel.realpath(absolute.toUri().getPath())); - - is = channel.get(absolute.toUri().getPath()); } catch (SftpException e) { throw new IOException(e); } - return new FSDataInputStream(new SFTPInputStream(is, statistics)){ + return new FSDataInputStream( + new SFTPInputStream(channel, absolute, statistics)){ @Override public void close() throws IOException { super.close(); Review comment: wrap super.close() with a try/finally so the channel is always diconnected ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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