ImageIdContainerDefinition.java

/*
 * The MIT License
 *
 *  Copyright (c) 2015, CloudBees, Inc.
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *  THE SOFTWARE.
 *
 */

package it.dockins.dockerslaves.spec;

import hudson.Extension;
import hudson.FilePath;
import hudson.model.TaskListener;
import it.dockins.dockerslaves.spi.DockerDriver;
import org.kohsuke.stapler.DataBoundConstructor;

import java.io.IOException;

/**
 * @author <a href="mailto:nicolas.deloof@gmail.com">Nicolas De Loof</a>
 */
public class ImageIdContainerDefinition extends ContainerDefinition {

    private final String image;

    private final boolean forcePull;

    @DataBoundConstructor
    public ImageIdContainerDefinition(String image, boolean forcePull) {
        this.image = image;
        this.forcePull = forcePull;
    }

    public String getImage() {
        return image;
    }

    @Override
    public String getImage(DockerDriver driver, FilePath workspace, TaskListener listener) throws IOException, InterruptedException {

        boolean pull = forcePull;
        boolean result = driver.checkImageExists(listener, image);

        if (!result) {
            // Could be a docker failure, but most probably image isn't available
            pull = true;
        }

        if (pull) {
            listener.getLogger().println("Pulling docker image " + image);
            driver.pullImage(listener, image);
        }

        return image;
    }

    @Extension(ordinal = 99)
    public static class DescriptorImpl extends ContainerDefinitionDescriptor {

        @Override
        public String getDisplayName() {
            return "Docker image";
        }
    }
}