/*
* Copyright 2011 b1.org
*
* Licensed 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.b1.pack.standard.common;
import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.primitives.Ints;
import org.b1.pack.api.builder.*;
import org.b1.pack.api.common.*;
import org.b1.pack.api.reader.PackReader;
import org.b1.pack.api.reader.ReaderProvider;
import org.b1.pack.api.reader.ReaderVolume;
import org.b1.pack.api.writer.PackWriter;
import org.b1.pack.api.writer.WriterProvider;
import org.b1.pack.api.writer.WriterVolume;
import org.junit.Test;
import java.io.*;
import java.util.List;
import java.util.Map;
import static com.google.common.base.Charsets.UTF_8;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.Iterables.getOnlyElement;
import static java.util.Arrays.asList;
import static java.util.logging.Logger.getLogger;
import static org.b1.pack.api.common.PackFormat.B1;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
public class IntegrationTest {
@Test
public void testBuilder() throws IOException {
final String folderName = "builderFolder";
final String fileName = "builderFile.txt";
final long fileTime = System.currentTimeMillis();
final byte[] fileContentBytes = "Hello, World!".getBytes(UTF_8.name());
final String packName = "builderTest";
String volumeName = packName + ".b1";
// START SNIPPET: builder
final BuilderFolder builderFolder = createBuilderFolder(folderName, fileTime);
final BuilderFile builderFile = createBuilderFile(folderName, fileName, fileTime, fileContentBytes);
List<BuilderVolume> volumes = PackBuilder.getInstance(B1).build(new BuilderProvider(), new BuilderCommand() {
@Override
public void execute(BuilderPack pack) {
pack.addFolder(builderFolder);
pack.addFile(builderFile);
}
});
BuilderVolume builderVolume = getOnlyElement(volumes);
byte[] volumeContent = getBuilderVolumeContent(builderVolume);
// END SNIPPET: builder
assertEquals(1, builderVolume.getNumber());
verifyVolumeWithReader(folderName, fileName, fileTime, fileContentBytes, volumeName, volumeContent);
}
@Test
public void testWriter() throws IOException {
String folderName = "writerFolder";
String fileName = "writerFile.txt";
long fileTime = System.currentTimeMillis();
byte[] fileContentBytes = "Hello, test!".getBytes(UTF_8.name());
String packName = "writerTest";
String volumeName = packName + ".b1";
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
// START SNIPPET: writer
WriterVolume writerVolume = createWriterVolume(buffer);
final PackEntry folderEntry = createPackEntry(folderName, fileTime);
final PackEntry fileEntry = createPackEntry(fileName, fileTime);
final long fileSize = fileContentBytes.length;
final FileContent fileContent = createFileContent(fileContentBytes);
WriterProvider provider = createWriterProvider(new FolderContent() {
@Override
public void writeTo(FolderBuilder builder) throws IOException {
builder.addFolder(folderEntry).addFile(fileEntry, fileSize).setContent(fileContent);
}
}, writerVolume);
PackWriter.getInstance(B1).write(provider);
// END SNIPPET: writer
byte[] volumeContent = buffer.toByteArray();
verifyVolumeWithReader(folderName, fileName, fileTime, fileContentBytes, volumeName, volumeContent);
}
private void verifyVolumeWithReader(String folderName, String fileName, long fileTime, byte[] fileContentBytes,
String volumeName, byte[] volumeContentBytes) throws IOException {
// START SNIPPET: reader
ReaderVolume readerVolume = createReaderVolume(volumeName, volumeContentBytes);
List<String> folderList = Lists.newArrayList();
Map<String, byte[]> fileMap = Maps.newHashMap();
final FolderBuilder builder = createFolderBuilder("", fileTime, folderList, fileMap);
ReaderProvider readerProvider = createReaderProvider(builder, readerVolume);
PackReader.getInstance(B1).read(readerProvider);
assertEquals(folderName, getOnlyElement(folderList));
Map.Entry<String, byte[]> fileEntry = getOnlyElement(fileMap.entrySet());
assertEquals(folderName + "/" + fileName, fileEntry.getKey());
assertArrayEquals(fileContentBytes, fileEntry.getValue());
// END SNIPPET: reader
}
private static BuilderFolder createBuilderFolder(final String folderName, final long lastModifiedTime) {
return new BuilderFolder() {
public List<String> getPath() {
return asList(folderName);
}
public Long getLastModifiedTime() {
return lastModifiedTime;
}
public void beforeAdd() {
getLogger(getClass().getName()).fine("Adding " + getPath());
}
};
}
private static BuilderFile createBuilderFile(final String folderName, final String fileName,
final long lastModifiedTime, final byte[] content) {
return new BuilderFile() {
public List<String> getPath() {
return asList(folderName, fileName);
}
public Long getLastModifiedTime() {
return lastModifiedTime;
}
public void beforeAdd() {
getLogger(getClass().getName()).fine("Adding " + getPath());
}
public long getSize() {
return content.length;
}
public void writeTo(OutputStream stream, long start, long end) throws IOException {
stream.write(content, Ints.checkedCast(start), Ints.checkedCast(end - start));
}
};
}
private static byte[] getBuilderVolumeContent(BuilderVolume builderVolume) throws IOException {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
builderVolume.writeTo(stream, 0, Ints.checkedCast(builderVolume.getSize()));
return stream.toByteArray();
}
private static WriterVolume createWriterVolume(final ByteArrayOutputStream buffer) {
return new WriterVolume() {
@Override
public OutputStream getOutputStream() throws IOException {
return buffer;
}
};
}
private static WriterProvider createWriterProvider(final FolderContent folderContent, final WriterVolume writerVolume) {
return new WriterProvider() {
@Override
public FolderContent getFolderContent() {
return folderContent;
}
@Override
public boolean isSeekable() {
return false;
}
@Override
public WriterVolume getVolume(long number) throws IOException {
assertEquals(1, number);
return writerVolume;
}
};
}
private static PackEntry createPackEntry(final String fileName, final long fileTime) {
return new PackEntry() {
@Override
public String getName() {
return fileName;
}
@Override
public Long getLastModifiedTime() {
return fileTime;
}
};
}
private static FileContent createFileContent(final byte[] fileContent) {
return new FileContent() {
@Override
public void writeTo(OutputStream stream, long start, Long end) throws IOException {
long length = (end != null ? end : fileContent.length) - start;
stream.write(fileContent, Ints.checkedCast(start), Ints.checkedCast(length));
}
};
}
private static ReaderVolume createReaderVolume(final String name, final byte[] packContent) {
return new ReaderVolume() {
@Override
public String getName() {
return name;
}
@Override
public Long getSize() {
return (long) packContent.length;
}
@Override
public InputStream getInputStream() throws IOException {
return new ByteArrayInputStream(packContent);
}
};
}
private static ReaderProvider createReaderProvider(final FolderBuilder builder, final ReaderVolume readerVolume) {
return new ReaderProvider() {
@Override
public FolderBuilder getFolderBuilder() {
return builder;
}
@Override
public ReaderVolume getVolume(long number) {
checkArgument(number == 1);
return readerVolume;
}
@Override
public long getVolumeCount() {
return 1;
}
};
}
private static FolderBuilder createFolderBuilder(final String prefix, final long fileTime, final List<String> folderList, final Map<String, byte[]> fileMap) {
return new FolderBuilder() {
@Override
public FileBuilder addFile(final PackEntry entry, final Long size) {
Preconditions.checkState(entry.getLastModifiedTime() == fileTime);
return createFileBuilder(prefix, entry, size, fileMap);
}
@Override
public FolderBuilder addFolder(PackEntry entry) {
Preconditions.checkState(entry.getLastModifiedTime() == fileTime);
folderList.add(prefix + entry.getName());
return createFolderBuilder(prefix + entry.getName() + "/", fileTime, folderList, fileMap);
}
@Override
public void save() throws IOException {
//no-op
}
};
}
private static FileBuilder createFileBuilder(final String prefix, final PackEntry entry, final Long size, final Map<String, byte[]> fileMap) {
return new FileBuilder() {
@Override
public void setContent(FileContent content) throws IOException {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
content.writeTo(stream, 0, null);
Preconditions.checkState(stream.size() == size);
fileMap.put(prefix + entry.getName(), stream.toByteArray());
}
@Override
public void save() throws IOException {
//no-op
}
};
}
}