MavenFileProfileActivator.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.maven.server;

import org.apache.maven.model.Activation;
import org.apache.maven.model.ActivationFile;
import org.apache.maven.model.Profile;
import org.apache.maven.profiles.activation.DetectedProfileActivator;
import org.codehaus.plexus.interpolation.EnvarBasedValueSource;
import org.codehaus.plexus.interpolation.InterpolationException;
import org.codehaus.plexus.interpolation.MapBasedValueSource;
import org.codehaus.plexus.interpolation.RegexBasedInterpolator;
import org.codehaus.plexus.logging.LogEnabled;
import org.codehaus.plexus.logging.Logger;
import org.codehaus.plexus.util.StringUtils;

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

/**
 * Copied from org.apache.maven.profiles.activation.FileProfileActivator,
 * added parameter baseDit to test file existing.
 */
public class MavenFileProfileActivator extends DetectedProfileActivator implements LogEnabled {
    private Logger logger;

    private final File baseDir;

    public MavenFileProfileActivator(File baseDir) {
        this.baseDir = baseDir;
    }

    protected boolean canDetectActivation(Profile profile) {
        return profile.getActivation() != null && profile.getActivation().getFile() != null;
    }

    /**
     * Returns {@code true} if the file exists, if it does then the profile will be active, otherwise returns {@code false}.
     */
    public boolean isActive(Profile profile) {
        Activation activation = profile.getActivation();
        ActivationFile actFile = activation.getFile();

        if (actFile != null) {
            // check if the file exists, if it does then the profile will be active
            String fileString = actFile.getExists();

            RegexBasedInterpolator interpolator = new RegexBasedInterpolator();
            try {
                interpolator.addValueSource(new EnvarBasedValueSource());
            } catch (IOException e) {
                // ignored
            }
            interpolator.addValueSource(new MapBasedValueSource(System.getProperties()));

            try {
                if (StringUtils.isNotEmpty(fileString)) {
                    fileString = StringUtils.replace(interpolator.interpolate(fileString, ""), "\\", "/");
                    return fileExists(fileString);
                }

                // check if the file is missing, if it is then the profile will be active
                fileString = actFile.getMissing();

                if (StringUtils.isNotEmpty(fileString)) {
                    fileString = StringUtils.replace(interpolator.interpolate(fileString, ""), "\\", "/");
                    return !fileExists(fileString);
                }
            } catch (InterpolationException e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to interpolate missing file location for profile activator: " + fileString, e);
                } else {
                    logger.warn("Failed to interpolate missing file location for profile activator: " + fileString +
                                ". Run in debug mode (-X) for more information.");
                }
            }
        }

        return false;
    }

    private boolean fileExists(String path) {
        return new File(path).exists() || new File(baseDir, path).exists();
    }

    public void enableLogging(Logger logger) {
        this.logger = logger;
    }
}