com.expedia.tesla.tools.mojo.GenerateSchemaMojo.java Source code

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Here is the source code for com.expedia.tesla.tools.mojo.GenerateSchemaMojo.java

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/*******************************************************************************
 * Copyright (c) 2015 Expedia Inc.
 *
 * 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.expedia.tesla.tools.mojo;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.Collection;

import org.apache.commons.lang.StringUtils;
import org.apache.maven.artifact.DependencyResolutionRequiredException;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.plugins.annotations.ResolutionScope;
import org.apache.maven.project.MavenProject;

import com.expedia.tesla.SchemaVersion;
import com.expedia.tesla.compiler.SchemaGenerator;
import com.expedia.tesla.compiler.Util;

/**
 * Generate Tesla schema from Java by reflection.
 */
@Mojo(name = "gentml", defaultPhase = LifecyclePhase.GENERATE_RESOURCES, requiresDependencyResolution = ResolutionScope.COMPILE, requiresDependencyCollection = ResolutionScope.COMPILE)
public class GenerateSchemaMojo extends AbstractMojo {
    @Parameter(defaultValue = "${project}", required = true, readonly = true)
    private MavenProject project;

    @Parameter
    private Collection<String> classes;

    @Parameter
    private TmlVersionInfo schemaVersion;

    @Parameter
    private File outputTml;

    @Parameter
    private String classpath = "";

    public void execute() throws MojoExecutionException {
        Log log = getLog();
        try {
            classpath += StringUtils.join(project.getCompileClasspathElements(),
                    System.getProperty("path.separator"));
        } catch (DependencyResolutionRequiredException e) {
            throw new MojoExecutionException("Failed to resolve project dependencies: " + e.getMessage(), e);
        }

        if (outputTml == null) {
            log.warn("Output is not set, using default value 'output.tml'.");
            outputTml = new File("output.tml");
        }

        log.info("Generating Tesla schema.");
        log.debug(String.format("classpath: %s", classpath));
        log.debug(String.format("Classes: %s", Arrays.toString(this.classes.toArray())));
        log.debug(String.format("Schema version name: %s", schemaVersion.getName()));
        log.debug(String.format("Schema version number: %s", schemaVersion.getVersionNumber()));
        log.debug(String.format("Output: %s", outputTml));
        OutputStream os = null;
        try {
            Util.forceMkdirParent(outputTml);
            os = new FileOutputStream(outputTml);
            SchemaGenerator.genTml(classes,
                    new SchemaVersion(0L, schemaVersion.getVersionNumber(), schemaVersion.getName(), null), os,
                    classpath);
        } catch (Exception e) {
            throw new MojoExecutionException("Failed to generate Tesla schema from Java.", e);
        } finally {
            if (os != null) {
                try {
                    os.close();
                } catch (IOException e) {
                    // ignore
                }
            }
        }
        log.info("Generated Tesla schema successfully.");
    }

    public static class TmlVersionInfo {
        private int versionNumber;
        private String name;

        public int getVersionNumber() {
            return versionNumber;
        }

        public void setVersionNumber(int versionNumber) {
            this.versionNumber = versionNumber;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }
    }
}