onl.area51.filesystem.s3.S3Retriever.java Source code

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Here is the source code for onl.area51.filesystem.s3.S3Retriever.java

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/*
 * Copyright 2016 peter.
 *
 * 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 onl.area51.filesystem.s3;

import com.amazonaws.services.s3.model.AmazonS3Exception;
import com.amazonaws.services.s3.model.GetObjectRequest;
import com.amazonaws.services.s3.model.S3Object;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import onl.area51.filesystem.FileSystemUtils;
import onl.area51.filesystem.io.FileSystemIO;
import onl.area51.filesystem.io.overlay.OverlayRetriever;

/**
 *
 * @author peter
 */
public class S3Retriever extends AbstractS3Action implements OverlayRetriever {

    private static final Logger LOG = Logger.getLogger("S3");

    public S3Retriever(FileSystemIO delegate, Map<String, ?> env) {
        super(delegate, env);
    }

    @Override
    public void retrieve(char[] path) throws IOException {
        String pathValue = String.valueOf(path);
        try {
            LOG.log(Level.FINE, () -> "Retrieving " + getBucketName() + ":" + pathValue);
            S3Object obj = getS3().getObject(new GetObjectRequest(getBucketName(), pathValue));
            FileSystemUtils.copyFromRemote(() -> obj.getObjectContent(), getDelegate(), path);
            LOG.log(Level.FINE, () -> "Retrieved " + getBucketName() + ":" + pathValue);
        } catch (AmazonS3Exception ex) {
            LOG.log(Level.FINE, () -> "Error " + ex.getStatusCode() + " " + getBucketName() + ":" + pathValue);
            if (ex.getStatusCode() == 404) {
                throw new FileNotFoundException(pathValue);
            }
            throw new IOException("Cannot access " + pathValue, ex);
        }
    }
}