com.bennavetta.util.tycho.impl.DefaultBundleGenerator.java Source code

Introduction

Here is the source code for com.bennavetta.util.tycho.impl.DefaultBundleGenerator.java

Source

/**
 * Copyright 2013 Ben Navetta <ben.navetta@gmail.com>
 *
 * 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 com.bennavetta.util.tycho.impl;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

import org.apache.maven.model.Model;
import org.apache.maven.model.building.ModelBuildingException;
import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
import org.sonatype.aether.artifact.Artifact;

import com.bennavetta.util.tycho.BundleGenerator;
import com.bennavetta.util.tycho.maven.Maven;
import com.google.common.base.CharMatcher;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.collect.Ordering;
import com.google.common.net.InternetDomainName;
import com.google.common.primitives.Ints;

/**
 * Default bundle metadata generator
 * @author ben
 * @see <a href="http://fusesource.com/docs/esb/4.4.1/esb_deploy_osgi/ESBMavenOSGiConfig.html">FuseSource Maven OSGi Config</a>
 */
public class DefaultBundleGenerator implements BundleGenerator {
    private static final Ordering<String> PATH_COMPONENTS = new Ordering<String>() {
        @Override
        public int compare(String a, String b) {
            // favor something like org.junit over junit.assert
            boolean aHasTld = hasTld(a);
            boolean bHasTld = hasTld(b);
            if (aHasTld && !bHasTld)
                return 1;
            if (!aHasTld && bHasTld)
                return -1;

            return Ints.compare(Iterables.size(Splitter.on('/').split(a)),
                    Iterables.size(Splitter.on('/').split(b)));
        }

        private boolean hasTld(String path) {
            String domain = Joiner.on('.').join(Lists.reverse(Lists.newArrayList(Splitter.on('/').split(path))));
            return InternetDomainName.isValid(domain) && InternetDomainName.from(domain).hasPublicSuffix();
        }
    };

    private static final CharMatcher PUNCTUATION = CharMatcher.ASCII
            .and(CharMatcher.is('-').or(CharMatcher.is('.'))); // what we are going to get in an artifact id

    @Override
    public String getSymbolicName(Artifact artifact) {
        if (artifact.getGroupId().indexOf('.') == -1) {
            // Find the first package with classes in it
            try (JarFile jar = new JarFile(artifact.getFile())) // commons-logging:commons-logging -> org.apache.commons.logging
            {
                List<String> contents = new ArrayList<>();
                Enumeration<JarEntry> entries = jar.entries();
                while (entries.hasMoreElements()) {
                    JarEntry entry = entries.nextElement();
                    contents.add(entry.getName());
                }
                // sort by number of slashes
                Collections.sort(contents, PATH_COMPONENTS);
                for (String path : contents) {
                    if (path.endsWith(".class")) {
                        path = path.substring(0, path.lastIndexOf('/')).replace('/', '.');
                        if (path.startsWith("/")) {
                            path = path.substring(1);
                        }
                        return path;
                    }
                }
            } catch (IOException e) {
                return null;
            }
        } else if (Iterables.getLast(Splitter.on('.').split(artifact.getGroupId()))
                .equals(artifact.getArtifactId())) {
            return artifact.getGroupId(); // org.apache.maven:maven -> org.apache.maven
        } else {
            String gidEnd = Iterables.getLast(Splitter.on('.').split(artifact.getGroupId()));
            if (Iterables.getFirst(Splitter.on('.').split(artifact.getArtifactId()), null).equals(gidEnd)) {
                // org.apache.maven:maven-core -> org.apache.maven.core
                return artifact.getGroupId() + "."
                        + PUNCTUATION.trimFrom(artifact.getArtifactId().substring(gidEnd.length()));
            } else {
                return artifact.getGroupId() + "." + artifact.getArtifactId(); // groupId + "." + artifactId
            }
        }
        return null;
    }

    @Override
    public String getVersion(String baseVersion) {
        if (baseVersion.endsWith("SNAPSHOT"))
            return baseVersion.substring(0, baseVersion.lastIndexOf("SNAPSHOT")).replace('-', '.') + "qualifier";
        else
            return baseVersion.replace('-', '.');
    }

    @Override
    public String getBundleName(Artifact artifact) {
        //return artifact.getGroupId() + " " +  artifact.getArtifactId(); // don't have access to the name
        try {
            Model pom = Maven.getModel(artifact);
            String name = pom.getName();
            System.out.println(pom);
            if (Strings.isNullOrEmpty(name))
                return artifact.getArtifactId();
            return name;
        } catch (ModelBuildingException | ComponentLookupException e) {
            System.err.println("Exception: " + e);
            return artifact.getArtifactId(); // don't have access to the name
        }
    }

}