org.pentaho.amazon.s3.S3NVfsFileChooserDialog.java Source code

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Here is the source code for org.pentaho.amazon.s3.S3NVfsFileChooserDialog.java

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/*******************************************************************************
 *
 * Pentaho Big Data
 *
 * Copyright (C) 2002-2018 by Hitachi Vantara : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * 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 org.pentaho.amazon.s3;

import com.amazonaws.SdkClientException;
import com.amazonaws.auth.AWSCredentials;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.FileSystemOptions;
import org.apache.commons.vfs2.auth.StaticUserAuthenticator;
import org.apache.commons.vfs2.impl.DefaultFileSystemConfigBuilder;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.pentaho.amazon.AmazonS3NFileSystemBootstrap;
import org.pentaho.amazon.AmazonSpoonPlugin;
import org.pentaho.di.core.exception.KettleFileException;
import org.pentaho.di.core.logging.LogChannel;
import org.pentaho.di.core.variables.VariableSpace;
import org.pentaho.di.core.variables.Variables;
import org.pentaho.di.core.vfs.KettleVFS;
import org.pentaho.di.ui.spoon.Spoon;
import org.pentaho.s3n.vfs.S3NFileProvider;
import org.pentaho.vfs.ui.CustomVfsUiPanel;
import org.pentaho.vfs.ui.VfsFileChooserDialog;

/**
 * The UI for S3 VFS
 */
public class S3NVfsFileChooserDialog extends CustomVfsUiPanel {

    private static Class<?> PKG = AmazonSpoonPlugin.class;

    private LogChannel log = new LogChannel(this);

    private FileObject rootFile;
    private FileObject initialFile;
    private VfsFileChooserDialog vfsFileChooserDialog;

    public S3NVfsFileChooserDialog(VfsFileChooserDialog vfsFileChooserDialog, FileObject rootFile,
            FileObject initialFile) {
        super(S3NFileProvider.SCHEME, AmazonS3NFileSystemBootstrap.getS3NFileSystemDisplayText(),
                vfsFileChooserDialog, SWT.NONE);

        this.vfsFileChooserDialog = vfsFileChooserDialog;
        this.rootFile = rootFile;
        this.initialFile = initialFile;

        setLayout(new GridLayout());
    }

    @Override
    public void activate() {
        vfsFileChooserDialog.setRootFile(rootFile);
        vfsFileChooserDialog.setInitialFile(initialFile);
        vfsFileChooserDialog.openFileCombo.setText("s3n://s3n/");
        vfsFileChooserDialog.vfsBrowser.fileSystemTree.removeAll();
        super.activate();

        try {
            FileObject newRoot = resolveFile(vfsFileChooserDialog.openFileCombo.getText());
            vfsFileChooserDialog.vfsBrowser.resetVfsRoot(newRoot);
        } catch (FileSystemException ignored) {
            //ignored
        }
    }

    public FileObject resolveFile(String fileUri) throws FileSystemException {
        try {
            return KettleVFS.getFileObject(fileUri, getVariableSpace(), getFileSystemOptions());
        } catch (KettleFileException e) {
            throw new FileSystemException(e);
        }
    }

    public FileObject resolveFile(String fileUri, FileSystemOptions opts) throws FileSystemException {
        try {
            return KettleVFS.getFileObject(fileUri, getVariableSpace(), opts);
        } catch (KettleFileException e) {
            throw new FileSystemException(e);
        }
    }

    private FileSystemOptions getFileSystemOptions() throws FileSystemException {
        FileSystemOptions opts = new FileSystemOptions();
        try {
            AWSCredentials credentials = S3CredentialsProvider.getAWSCredentials();
            if (credentials != null) {
                StaticUserAuthenticator userAuthenticator = new StaticUserAuthenticator(null,
                        credentials.getAWSAccessKeyId(), credentials.getAWSSecretKey());
                DefaultFileSystemConfigBuilder.getInstance().setUserAuthenticator(opts, userAuthenticator);
            }
        } catch (SdkClientException e) {
            throw new FileSystemException(e);
        }
        return opts;
    }

    private VariableSpace getVariableSpace() {
        if (Spoon.getInstance().getActiveTransformation() != null) {
            return Spoon.getInstance().getActiveTransformation();
        } else if (Spoon.getInstance().getActiveJob() != null) {
            return Spoon.getInstance().getActiveJob();
        } else {
            return new Variables();
        }
    }
}