io.fabric8.maven.generator.vertx.VertxGenerator.java Source code

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Here is the source code for io.fabric8.maven.generator.vertx.VertxGenerator.java

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/*
 * Copyright 2016 Red Hat, Inc.
 *
 * Red Hat licenses this file to you 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 io.fabric8.maven.generator.vertx;

import io.fabric8.maven.core.util.MavenUtil;
import io.fabric8.maven.docker.config.ImageConfiguration;
import io.fabric8.maven.generator.api.GeneratorContext;
import io.fabric8.maven.generator.javaexec.JavaExecGenerator;
import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.project.MavenProject;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import static io.fabric8.maven.generator.vertx.Constants.*;

/**
 * Vert.x Generator.
 * <p>
 * Then main part of creating the base image is taken java-exec generator.
 * <p>
 *
 * It detects whether or not it's a Vert.x project by looking if there is the vertx-core dependency associated by the
 * Maven Shader Plugin or if the project use the Vert.x Maven Plugin.
 *
 * To avoid the issue to write file in the current working directory the `cacheDirBase` is configured to `/tmp`.
 */
public class VertxGenerator extends JavaExecGenerator {

    public VertxGenerator(GeneratorContext context) {
        super(context, "vertx");
    }

    @Override
    public boolean isApplicable(List<ImageConfiguration> configs) throws MojoExecutionException {
        return shouldAddImageConfiguration(configs) && (MavenUtil.hasPlugin(getProject(), VERTX_MAVEN_PLUGIN_GA)
                || MavenUtil.hasDependencyOnAnyArtifactOfGroup(getProject(), VERTX_GROUPID));
    }

    @Override
    protected List<String> getExtraJavaOptions() {
        List<String> opts = super.getExtraJavaOptions();
        opts.add("-Dvertx.cacheDirBase=/tmp");
        return opts;
    }

    @Override
    protected boolean isFatJar() throws MojoExecutionException {
        return !hasMainClass() && isUsingFatJarPlugin() || super.isFatJar();
    }

    private boolean isUsingFatJarPlugin() {
        MavenProject project = getProject();
        Plugin shade = project.getPlugin(SHADE_PLUGIN_GA);
        Plugin vertx = project.getPlugin(VERTX_MAVEN_PLUGIN_GA);
        return shade != null || vertx != null;
    }

    @Override
    protected List<String> extractPorts() {
        Map<String, Integer> extractedPorts = new VertxPortsExtractor(log).extract(getProject());
        List<String> ports = new ArrayList<>();
        for (Integer p : extractedPorts.values()) {
            ports.add(String.valueOf(p));
        }
        // If there are no specific vertx ports found, we reuse the ports from the JavaExecGenerator
        return ports.size() > 0 ? ports : super.extractPorts();
    }
}