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/*
* Copyright © 2018 European Support Limited
*
* 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 a "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.openecomp.sdc.onboarding;
import static org.openecomp.sdc.onboarding.Constants.JAVA_EXT;
import static org.openecomp.sdc.onboarding.Constants.UNICORN;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.UncheckedIOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.RecursiveTask;
import java.util.stream.Collectors;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.project.MavenProject;
class BuildHelper {
private BuildHelper() {
// donot remove.
}
static long getChecksum(File file, String fileType) {
try {
return readSources(file, fileType).hashCode();
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
static String getSourceChecksum(String data, String hashType) throws NoSuchAlgorithmException {
MessageDigest md = MessageDigest.getInstance(hashType);
md.update(data.getBytes());
byte[] hashBytes = md.digest();
StringBuffer buffer = new StringBuffer();
for (byte hashByte : hashBytes) {
buffer.append(Integer.toString((hashByte & 0xff) + 0x100, 16).substring(1));
}
return buffer.toString();
}
private static Map<String, String> readSources(File file, String fileType) throws IOException {
Map<String, String> source = new HashMap<>();
if (file.exists()) {
List<File> list = Files.walk(Paths.get(file.getAbsolutePath()))
.filter(JAVA_EXT.equals(fileType) ? BuildHelper::isRegularJavaFile :
Files::isRegularFile).map(p -> p.toFile())
.collect(Collectors.toList());
source.putAll(ForkJoinPool.commonPool()
.invoke(new FileReadTask(list.toArray(new File[0]), file.getAbsolutePath())));
}
return source;
}
private static boolean isRegularJavaFile(Path path) {
File file = path.toFile();
return file.isFile() && file.getName().endsWith(JAVA_EXT);
}
private static String getData(File file, byte[] buffer) {
try (FileInputStream fis = new FileInputStream(file);
BufferedInputStream bis = new BufferedInputStream(fis, 64 * 1024)) {
bis.read(buffer, 0, ((int) file.length()));
if (file.getAbsolutePath().contains(File.separator + "generated-sources" + File.separator)) {
StringBuffer sb = new StringBuffer();
List<String> coll = Files.readAllLines(file.toPath());
for (String s : coll) {
if (s != null && !s.trim().startsWith("/") && !s.trim().startsWith("*")) {
sb.append(s);
}
}
return sb.toString();
}
} catch (IOException ioe) {
throw new UncheckedIOException(ioe);
}
return new String(buffer, 0, ((int) file.length()));
}
private static class FileReadTask extends RecursiveTask<Map<String, String>> {
Map<String, String> store = new HashMap<>();
private byte[] buffer = new byte[1024 * 1024];
File[] files;
String pathPrefix;
private final int MAX_FILES = 10;
FileReadTask(File[] files, String pathPrefix) {
this.files = files;
this.pathPrefix = pathPrefix;
}
@Override
protected Map<String, String> compute() {
if (files.length > MAX_FILES) {
FileReadTask task1 = new FileReadTask(Arrays.copyOfRange(files, 0, files.length / 2), pathPrefix);
FileReadTask task2 =
new FileReadTask(Arrays.copyOfRange(files, files.length / 2, files.length), pathPrefix);
task1.fork();
task2.fork();
store.putAll(task1.join());
store.putAll(task2.join());
} else {
for (File toRead : files) {
store.put(toRead.getAbsolutePath().substring(pathPrefix.length()), getData(toRead, buffer));
}
}
return store;
}
}
static Optional<String> getArtifactPathInLocalRepo(String repoPath, MavenProject project, byte[] sourceChecksum)
throws MojoFailureException {
URI uri = null;
try {
uri = new URI(repoPath + (project.getGroupId().replace('.', '/')) + '/' + project.getArtifactId() + '/'
+ project.getVersion());
} catch (URISyntaxException e) {
throw new MojoFailureException(e.getMessage());
}
File f = new File(uri);
File[] list = f.listFiles(t -> t.getName().equals(project.getArtifactId() + "-" + project.getVersion() + "."
+ project.getPackaging()));
if (list != null && list.length > 0) {
File checksumFile = new File(list[0].getParentFile(), project.getBuild().getFinalName() + "." + UNICORN);
try {
if (checksumFile.exists() && Arrays.equals(sourceChecksum, Files.readAllBytes(checksumFile.toPath()))) {
return Optional.of(list[0].getAbsolutePath());
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
return Optional.empty();
}
static <T> Optional<T> readState(String fileName, Class<T> clazz) {
try (InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
ObjectInputStream ois = new ObjectInputStream(is)) {
return Optional.of(clazz.cast(ois.readObject()));
} catch (Exception ignored) {
//ignore. it is taken care.
return Optional.empty();
}
}
}
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