org.wildfly.swarm.fractions.FractionUsageAnalyzer Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of fraction-metadata Show documentation
Show all versions of fraction-metadata Show documentation
WildFly Swarm: Fraction Metadata
/*
* Copyright 2015-2016 Red Hat, Inc, and individual contributors.
*
* 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.wildfly.swarm.fractions;
import java.io.File;
import java.io.IOException;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.ServiceLoader;
import java.util.Set;
import java.util.function.Consumer;
import java.util.stream.Collectors;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.wildfly.swarm.fractions.scanner.ClassAndPackageScanner;
import org.wildfly.swarm.fractions.scanner.FilePresenceScanner;
import org.wildfly.swarm.fractions.scanner.JarScanner;
import org.wildfly.swarm.fractions.scanner.Scanner;
import org.wildfly.swarm.fractions.scanner.WarScanner;
import org.wildfly.swarm.fractions.scanner.WebXmlDescriptorScanner;
import org.wildfly.swarm.spi.meta.PathSource;
import org.wildfly.swarm.spi.meta.FilePathSource;
import org.wildfly.swarm.spi.meta.FractionDetector;
import org.wildfly.swarm.spi.meta.SimpleLogger;
import org.wildfly.swarm.spi.meta.ZipPathSource;
/**
* @author Bob McWhirter
* @author Toby Crawley
* @author Ken Finnigan
*/
public class FractionUsageAnalyzer {
public FractionUsageAnalyzer() {
this(FractionList.get());
}
public FractionUsageAnalyzer(final FractionList fractionList) {
this.fractionList = fractionList;
}
public FractionUsageAnalyzer source(final Path source) {
source(source.toFile());
return this;
}
public FractionUsageAnalyzer source(final File source) {
this.sources.add(source);
return this;
}
public FractionUsageAnalyzer logger(final SimpleLogger log) {
this.log = log;
return this;
}
public Collection detectNeededFractions() throws IOException {
if (this.fractionList == null) {
return Collections.emptySet();
}
Set detectedFractions;
loadDetectorsAndScanners();
sources.forEach(this::scanFile);
Set detectedFractionNames =
detectors.stream()
.filter(FractionDetector::wasDetected)
.map(FractionDetector::artifactId)
.distinct()
.collect(Collectors.toSet());
if (sources.stream().anyMatch(e -> e.getName().endsWith(".war"))) {
detectedFractionNames.add("undertow");
}
detectedFractions = this.fractionList.getFractionDescriptors()
.stream()
.filter(fd -> detectedFractionNames.contains(fd.getArtifactId()))
.collect(Collectors.toSet());
// Remove fractions that have an explicitDependency on each other
Iterator it = detectedFractions.iterator();
while (it.hasNext()) {
FractionDescriptor descriptor = it.next();
// Is set as a explicitDependency to any other descriptor? If so, remove it
if (detectedFractions.stream().anyMatch(fd -> fd.getDependencies().contains(descriptor))) {
it.remove();
}
}
// Add container only if no fractions are detected, as they have a transitive explicitDependency to container
if (detectedFractions.isEmpty()) {
detectedFractions.add(this.fractionList.getFractionDescriptor(FractionDescriptor.WILDFLY_SWARM_GROUP_ID, "container"));
}
return detectedFractions;
}
private boolean isZipFile(File source) {
if (source.isDirectory()) {
return false;
}
return source.getName().endsWith(".jar") || source.getName().endsWith(".war") || source.getName().endsWith(".zip");
}
private void scanFile(File source) {
if (isZipFile(source)) {
fireScanner(suffix(source.getName()), zipFileScannerConsumer(source));
} else {
File basePathFile = source.getAbsoluteFile();
Path basePath = null;
if (basePathFile.isDirectory()) {
basePath = basePathFile.toPath();
}
if (source.isDirectory()) {
if (source.getName().endsWith(".war") || new File(source, "WEB-INF").exists()) {
fireScanner("war", explodedScannerConsumer(basePath, source));
} else {
fireScanner("jar", explodedScannerConsumer(basePath, source));
}
} else {
fireScanner(suffix(source.getName()), explodedScannerConsumer(basePath, source));
}
}
}
private Consumer> zipFileScannerConsumer(File source) {
return s -> {
try (ZipFile zip = new ZipFile(source)) {
scanEntries(zip);
} catch (IOException e) {
log.error("", e);
}
};
}
private Consumer> explodedScannerConsumer(Path basePath, File source) {
return s -> {
try {
scanEntries(source.toPath(), basePath);
} catch (IOException e) {
log.error("", e);
}
};
}
private void scanSource(final PathSource source) {
final String suffix = suffix(source.getSource().getFileName().toString());
Collection> validDetectors =
detectors.stream()
.filter(d -> d.extensionToDetect().equals(suffix))
.filter(d -> !d.detectionComplete())
.collect(Collectors.toList());
if (validDetectors.size() > 0) {
fireScanner(suffix, s -> {
try {
s.scan(source, convertDetectors(validDetectors), this::scanFile);
} catch (IOException e) {
log.error("", e);
}
});
}
}
private void scanSource(ZipEntry entry, ZipFile source) {
final String suffix = suffix(entry.getName());
Collection> validDetectors =
detectors.stream()
.filter(d -> d.extensionToDetect().equals(suffix))
.filter(d -> !d.detectionComplete())
.collect(Collectors.toList());
if (validDetectors.size() > 0) {
fireScanner(suffix, s -> {
try {
s.scan(new ZipPathSource(source, entry), convertDetectors(validDetectors), this::scanFile);
} catch (IOException e) {
log.error("", e);
}
});
}
}
private void scanEntries(ZipFile source) throws IOException {
final Enumeration entries = source.entries();
while (entries.hasMoreElements()) {
ZipEntry entry = entries.nextElement();
if (!entry.isDirectory()) {
scanSource(entry, source);
}
}
}
private void scanEntries(Path source, Path basePath) throws IOException {
if (Files.isDirectory(source)) {
Files.walkFileTree(source, new SimpleFileVisitor() {
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
scanSource(new FilePathSource(basePath, file.toFile()));
return super.visitFile(file, attrs);
}
});
} else {
scanSource(new FilePathSource(basePath, source.toFile()));
}
}
private Collection> convertDetectors(Collection> untypedDetectors) {
Collection> detectors = new HashSet<>();
untypedDetectors.forEach(d -> detectors.add(convert(d)));
return detectors;
}
@SuppressWarnings("unchecked")
private FractionDetector convert(FractionDetector detector) {
return (FractionDetector) detector;
}
private void fireScanner(String suffix, Consumer> scannerConsumer) {
List> scanners = this.scanners.stream()
.filter(s -> s.extension().equals(suffix))
.collect(Collectors.toList());
scanners.forEach(scannerConsumer);
}
private String suffix(String name) {
return name.substring(name.lastIndexOf('.') + 1);
}
private void loadDetectorsAndScanners() {
if (detectorsLoaded) {
return;
}
ServiceLoader detectorLoader = ServiceLoader.load(FractionDetector.class);
detectorLoader.forEach(d -> detectors.add(d));
scanners.add(new WarScanner());
scanners.add(new JarScanner());
scanners.add(new ClassAndPackageScanner());
scanners.add(new WebXmlDescriptorScanner());
scanners.add(new FilePresenceScanner());
ClassAndPackageScanner.classesPackagesAlreadyDetected.clear();
detectorsLoaded = true;
}
private final List sources = new ArrayList<>();
private final FractionList fractionList;
private Collection> detectors = new HashSet<>();
private Collection> scanners = new HashSet<>();
private boolean detectorsLoaded = false;
private SimpleLogger log = new SimpleLogger() {
};
}