Java tutorial
package ch.cyberduck.core.manta; /* * Copyright (c) 2002-2017 iterate GmbH. All rights reserved. * https://cyberduck.io/ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ import ch.cyberduck.core.AlphanumericRandomStringService; import ch.cyberduck.core.DisabledConnectionCallback; import ch.cyberduck.core.DisabledLoginCallback; import ch.cyberduck.core.Local; import ch.cyberduck.core.Path; import ch.cyberduck.core.exception.NotfoundException; import ch.cyberduck.core.features.Delete; import ch.cyberduck.core.io.BandwidthThrottle; import ch.cyberduck.core.io.DisabledStreamListener; import ch.cyberduck.core.io.StreamCopier; import ch.cyberduck.core.shared.DefaultUploadFeature; import ch.cyberduck.core.transfer.TransferStatus; import ch.cyberduck.test.IntegrationTest; import org.apache.commons.io.IOUtils; import org.apache.commons.lang3.RandomUtils; import org.junit.Test; import org.junit.experimental.categories.Category; import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.util.Collections; import java.util.EnumSet; import static org.junit.Assert.*; @Category(IntegrationTest.class) public class MantaReadFeatureTest extends AbstractMantaTest { @Test(expected = NotfoundException.class) public void testReadNotFound() throws Exception { final TransferStatus status = new TransferStatus(); try { final Path drive = new MantaDirectoryFeature(session).mkdir(randomDirectory(), "", new TransferStatus()); new MantaReadFeature(session).read(new Path(drive, "nosuchname", EnumSet.of(Path.Type.file)), status, new DisabledConnectionCallback()); } catch (NotfoundException e) { assertEquals("Not Found. Please contact your web hosting service provider for assistance.", e.getDetail()); throw e; } } @Test public void testReadInterrupt() throws Exception { final Path drive = new MantaDirectoryFeature(session).mkdir(randomDirectory(), "", new TransferStatus()); final Path test = new Path(drive, new AlphanumericRandomStringService().random(), EnumSet.of(Path.Type.file)); new MantaTouchFeature(session).touch(test, new TransferStatus()); // Unknown length in status final TransferStatus status = new TransferStatus(); // Read a single byte { final InputStream in = new MantaReadFeature(session).read(test, status, new DisabledConnectionCallback()); assertNotNull(in.read()); in.close(); } { final InputStream in = new MantaReadFeature(session).read(test, status, new DisabledConnectionCallback()); assertNotNull(in); in.close(); } final MantaDeleteFeature delete = new MantaDeleteFeature(session); delete.delete(Collections.singletonList(test), new DisabledLoginCallback(), new Delete.DisabledCallback()); } @Test public void testReadRange() throws Exception { final Path drive = new MantaDirectoryFeature(session).mkdir(randomDirectory(), "", new TransferStatus()); final Path test = new Path(drive, new AlphanumericRandomStringService().random(), EnumSet.of(Path.Type.file)); new MantaTouchFeature(session).touch(test, new TransferStatus()); final Local local = new Local(System.getProperty("java.io.tmpdir"), new AlphanumericRandomStringService().random()); final int BYTES_TOTAL = 10;//00; final int BYTES_OFFSET = 1;//00; final byte[] content = RandomUtils.nextBytes(BYTES_TOTAL); final OutputStream out = local.getOutputStream(false); assertNotNull(out); IOUtils.write(content, out); out.close(); new DefaultUploadFeature<Void>(new MantaWriteFeature(session)).upload(test, local, new BandwidthThrottle(BandwidthThrottle.UNLIMITED), new DisabledStreamListener(), new TransferStatus().length(content.length), new DisabledConnectionCallback()); final TransferStatus status = new TransferStatus(); status.setLength(content.length); status.setAppend(true); status.setOffset(BYTES_OFFSET); final MantaReadFeature read = new MantaReadFeature(session); assertTrue(read.offset(test)); final InputStream in = read.read(test, status.length(content.length - BYTES_OFFSET), new DisabledConnectionCallback()); assertNotNull(in); final ByteArrayOutputStream buffer = new ByteArrayOutputStream(content.length - BYTES_OFFSET); new StreamCopier(status, status).transfer(in, buffer); final byte[] reference = new byte[content.length - BYTES_OFFSET]; System.arraycopy(content, BYTES_OFFSET, reference, 0, content.length - BYTES_OFFSET); assertArrayEquals(reference, buffer.toByteArray()); in.close(); new MantaDeleteFeature(session).delete(Collections.singletonList(test), new DisabledLoginCallback(), new Delete.DisabledCallback()); } @Test public void testReadRangeUnknownLength() throws Exception { final Path drive = new MantaDirectoryFeature(session).mkdir(randomDirectory(), "", new TransferStatus()); final Path test = new Path(drive, new AlphanumericRandomStringService().random(), EnumSet.of(Path.Type.file)); new MantaTouchFeature(session).touch(test, new TransferStatus()); final Local local = new Local(System.getProperty("java.io.tmpdir"), new AlphanumericRandomStringService().random()); final byte[] content = RandomUtils.nextBytes(1000); final OutputStream out = local.getOutputStream(false); assertNotNull(out); IOUtils.write(content, out); out.close(); new DefaultUploadFeature<Void>(new MantaWriteFeature(session)).upload(test, local, new BandwidthThrottle(BandwidthThrottle.UNLIMITED), new DisabledStreamListener(), new TransferStatus().length(content.length), new DisabledConnectionCallback()); final TransferStatus status = new TransferStatus(); status.setLength(-1L); status.setAppend(true); status.setOffset(100L); final InputStream in = new MantaReadFeature(session).read(test, status, new DisabledConnectionCallback()); assertNotNull(in); final ByteArrayOutputStream buffer = new ByteArrayOutputStream(content.length - 100); new StreamCopier(status, status).transfer(in, buffer); final byte[] reference = new byte[content.length - 100]; System.arraycopy(content, 100, reference, 0, content.length - 100); assertArrayEquals(reference, buffer.toByteArray()); in.close(); final MantaDeleteFeature delete = new MantaDeleteFeature(session); delete.delete(Collections.singletonList(test), new DisabledLoginCallback(), new Delete.DisabledCallback()); } }