de.gesellix.docker.builder.BuildContextBuilder Maven / Gradle / Ivy
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package de.gesellix.docker.builder;
import de.gesellix.util.IOUtils;
import okio.Okio;
import okio.Source;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import java.util.zip.GZIPOutputStream;
public class BuildContextBuilder {
private static final Logger log = LoggerFactory.getLogger(BuildContextBuilder.class);
public static void archiveTarFilesRecursively(File base, File targetFile) throws IOException {
List filenames = new DockerignoreFileFilter(base, new ArrayList<>(Collections.singletonList(targetFile.getAbsolutePath()))).collectFiles(base);
log.debug("found {} files in buildContext.", filenames.size());
archiveTarFiles(base, filenames.stream().map(File::getAbsolutePath).collect(Collectors.toList()), targetFile);
}
public static void archiveTarFilesRecursively(File base, OutputStream target) throws IOException {
List filenames = new DockerignoreFileFilter(base, new ArrayList<>()).collectFiles(base);
log.debug("found {} files in buildContext.", filenames.size());
archiveTarFiles(base, filenames.stream().map(File::getAbsolutePath).collect(Collectors.toList()), target);
}
public static void archiveTarFiles(File base, List filenames, File targetFile) throws IOException {
archiveTarFiles(base, filenames, Files.newOutputStream(targetFile.toPath()));
}
public static void archiveTarFiles(File base, List filenames, OutputStream target) throws IOException {
try (TarArchiveOutputStream tos = new TarArchiveOutputStream(new GZIPOutputStream(target))) {
tos.setLongFileMode(TarArchiveOutputStream.LONGFILE_POSIX);
tos.setBigNumberMode(TarArchiveOutputStream.BIGNUMBER_POSIX);
for (String filename : filenames) {
String relativeFileName = relativize(base, new File(filename));
log.debug("adding {} as {}", filename, relativeFileName);
addAsTarEntry(new File(filename), relativeFileName, tos);
}
}
}
public static void addAsTarEntry(File file, String relativeFileName, TarArchiveOutputStream tos) throws IOException {
TarArchiveEntry tarEntry = new TarArchiveEntry(file);
tarEntry.setName(relativeFileName);
if (!file.isDirectory()) {
if (Files.isExecutable(file.toPath())) {
tarEntry.setMode(tarEntry.getMode() | 0755);
}
}
tos.putArchiveEntry(tarEntry);
if (!file.isDirectory()) {
copyFile(file, tos);
}
tos.closeArchiveEntry();
}
public static String relativize(File base, File absolute) {
return base.toPath().relativize(absolute.toPath()).toString();
}
public static long copyFile(File input, OutputStream output) throws IOException {
Source source = null;
try {
source = Okio.source(input);
return IOUtils.copy(source, Okio.sink(output));
}
finally {
IOUtils.closeQuietly(source);
}
}
}
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