hadoopInstaller.installation.UploadConfiguration.java Source code

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Here is the source code for hadoopInstaller.installation.UploadConfiguration.java

Source

package hadoopInstaller.installation;

/*
 * #%L
 * Hadoop Installer
 * %%
 * Copyright (C) 2015 - 2016 Julin Maestri
 * %%
 * 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.
 * #L%
 */

import hadoopInstaller.configurationGeneration.EnvShBuilder;
import hadoopInstaller.exception.InstallationError;
import hadoopInstaller.logging.MessageFormattingLog;

import java.io.IOException;
import java.net.URI;
import java.text.MessageFormat;

import org.apache.commons.io.IOUtils;
import org.apache.commons.vfs2.AllFileSelector;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;

public final class UploadConfiguration {

    private MessageFormattingLog log;
    private boolean deleteOldFiles;
    private FileObject filesToUpload;

    public UploadConfiguration(FileObject filesToUpload, boolean deleteOldFiles, MessageFormattingLog log) {
        this.filesToUpload = filesToUpload;
        this.deleteOldFiles = deleteOldFiles;
        this.log = log;
    }

    private String getLocalFileContents(String fileName) throws InstallationError {
        log.debug("HostInstallation.LoadingLocal", //$NON-NLS-1$
                fileName);
        FileObject localFile;
        String localFileContents = new String();
        try {
            localFile = filesToUpload.resolveFile(fileName);
            if (localFile.exists()) {
                localFileContents = IOUtils.toString(localFile.getContent().getInputStream());
            }
        } catch (IOException e) {
            throw new InstallationError(e, "HostInstallation.CouldNotOpen", //$NON-NLS-1$
                    fileName);
        }
        try {
            localFile.close();
        } catch (FileSystemException e) {
            log.warn("HostInstallation.CouldNotClose", //$NON-NLS-1$
                    localFile.getName().getURI());
        }
        log.debug("HostInstallation.LoadedLocal", //$NON-NLS-1$
                fileName);
        return localFileContents;
    }

    private void modifyEnvShFile(Host host, FileObject configurationDirectory, String fileName)
            throws InstallationError {
        log.debug("HostInstallation.Upload.File.Start", //$NON-NLS-1$
                fileName, host.getHostname());
        FileObject configurationFile;
        try {
            configurationFile = configurationDirectory.resolveFile(fileName);
        } catch (FileSystemException e) {
            throw new InstallationError(e, "HostInstallation.CouldNotOpen", //$NON-NLS-1$
                    fileName);
        }
        EnvShBuilder builder = new EnvShBuilder(configurationFile);
        String path = host.getInstallationDirectory();
        URI hadoop = URI.create(MessageFormat.format("file://{0}/{1}/", //$NON-NLS-1$
                path, InstallerConstants.HADOOP_DIRECTORY));
        URI java = URI.create(MessageFormat.format("file://{0}/{1}/", //$NON-NLS-1$
                path, InstallerConstants.JAVA_DIRECTORY));
        builder.setCustomConfig(getLocalFileContents(fileName));
        builder.setHadoopPrefix(hadoop.getPath());
        builder.setJavaHome(java.getPath());
        try {
            builder.build();
        } catch (IOException e) {
            throw new InstallationError(e, "HostInstallation.CouldNotWrite", //$NON-NLS-1$
                    configurationFile.getName().getURI());
        }
        try {
            configurationFile.close();
        } catch (FileSystemException e) {
            log.warn("HostInstallation.CouldNotClose", //$NON-NLS-1$
                    configurationFile.getName().getURI());
        }
        log.debug("HostInstallation.Upload.File.Success", //$NON-NLS-1$
                fileName, host.getHostname());
    }

    public void run(Host host, FileObject remoteDirectory) throws InstallationError {
        log.debug("HostInstallation.Upload.Started", //$NON-NLS-1$
                host.getHostname());
        uploadConfiguration(remoteDirectory, host);
        log.info("HostInstallation.Upload.Success", //$NON-NLS-1$
                host.getHostname());
    }

    private void uploadConfiguration(FileObject remoteDirectory, Host host) throws InstallationError {
        try {
            FileObject configurationDirectory = remoteDirectory.resolveFile("hadoop/etc/hadoop/"); //$NON-NLS-1$
            if (deleteOldFiles) {
                configurationDirectory.delete(new AllFileSelector());
                log.debug("HostInstallation.Upload.DeletingOldFiles", //$NON-NLS-1$
                        host.getHostname());
            } else if (!configurationDirectory.exists()) {
                throw new InstallationError("HostInstallation.Upload.NotDeployed"); //$NON-NLS-1$
            }
            configurationDirectory.copyFrom(filesToUpload, new AllFileSelector());
            modifyEnvShFile(host, configurationDirectory, InstallerConstants.ENV_FILE_HADOOP);
            modifyEnvShFile(host, configurationDirectory, InstallerConstants.ENV_FILE_YARN);
            try {
                configurationDirectory.close();
            } catch (FileSystemException ex) {
                log.warn("HostInstallation.CouldNotClose", //$NON-NLS-1$
                        configurationDirectory.getName().getURI());
            }
        } catch (FileSystemException e) {
            throw new InstallationError(e, "HostInstallation.Upload.Error", //$NON-NLS-1$
                    remoteDirectory.getName().getURI());
        }
    }

}