com.francetelecom.clara.cloud.mvn.consumer.maven.PomGenerator.java Source code

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Here is the source code for com.francetelecom.clara.cloud.mvn.consumer.maven.PomGenerator.java

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/**
 * Copyright (C) 2015 Orange
 * 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.francetelecom.clara.cloud.mvn.consumer.maven;

import com.francetelecom.clara.cloud.commons.MavenReference;
import com.francetelecom.clara.cloud.commons.TechnicalException;
import com.francetelecom.clara.cloud.mvn.consumer.MvnConsumerConfigurer;
import com.francetelecom.clara.cloud.mvn.consumer.MvnRepoDaoImpl;
import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.maven.model.Model;
import org.apache.maven.model.io.DefaultModelWriter;

import java.io.File;
import java.io.IOException;
import java.io.StringWriter;

public class PomGenerator {
    private static Logger logger = LoggerFactory.getLogger(MvnRepoDaoImpl.class);

    public PomGenerator(MvnConsumerConfigurer mvnConsumerConfigurer) {
    }

    public File generatePom(File projectDirectory, MavenReference mavenReference) throws IOException {
        if (projectDirectory == null) {
            throw new IllegalArgumentException("projectDirectory cannot be null");
        }
        if (mavenReference == null) {
            throw new IllegalArgumentException("mavenReference cannot be null");
        }
        if (!projectDirectory.exists()) {
            FileUtils.forceMkdir(projectDirectory);
        }

        Model project = new Model();

        project.setModelVersion("4.0.0");
        project.setGroupId(mavenReference.getGroupId());
        project.setArtifactId(mavenReference.getArtifactId());
        project.setVersion(mavenReference.getVersion());
        project.setPackaging(mavenReference.getExtension());
        project.setName(mavenReference.getArtifactId() + " (" + mavenReference.getExtension() + ")");

        String pom = modelToStringXml(project);
        logger.debug("generated pom : \n" + pom);

        File pomFile = new File(projectDirectory.getAbsolutePath() + "/pom.xml");
        FileUtils.writeStringToFile(pomFile, pom);

        return pomFile;
    }

    /**
     * Generate a pom.xml file from a MavenProject description
     * @return
     */
    private String modelToStringXml(Model model) {

        DefaultModelWriter modelWriter = new DefaultModelWriter();

        StringWriter output = new StringWriter();
        String result = "";
        try {
            modelWriter.write(output, null, model);
            result = output.getBuffer().toString();
        } catch (IOException e) {
            logger.error("Cannot convert model to pom: " + e.getMessage());
            throw new TechnicalException("Cannot convert model to pom", e);
        }
        return result;
    }

}