org.alanwilliamson.amazon.s3.GetUrl.java Source code

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Here is the source code for org.alanwilliamson.amazon.s3.GetUrl.java

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/*
 *  Copyright (C) 2000 - 2015 TagServlet Ltd
 *
 *  This file is part of Open BlueDragon (OpenBD) CFML Server Engine.
 *
 *  OpenBD is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  Free Software Foundation,version 3.
 *
 *  OpenBD is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with OpenBD.  If not, see http://www.gnu.org/licenses/
 *
 *  Additional permission under GNU GPL version 3 section 7
 *
 *  If you modify this Program, or any covered work, by linking or combining
 *  it with any of the JARS listed in the README.txt (or a modified version of
 *  (that library), containing parts covered by the terms of that JAR, the
 *  licensors of this Program grant you additional permission to convey the
 *  resulting work.
 *  README.txt @ http://www.openbluedragon.org/license/README.txt
 *
 *  http://openbd.org/
 *  $Id: GetUrl.java 2529 2015-03-01 23:39:29Z alan $
 */

package org.alanwilliamson.amazon.s3;

import java.util.Date;

import org.alanwilliamson.amazon.AmazonBase;
import org.alanwilliamson.amazon.AmazonKey;
import org.aw20.util.DateUtil;

import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest;
import com.naryx.tagfusion.cfm.engine.cfArgStructData;
import com.naryx.tagfusion.cfm.engine.cfBooleanData;
import com.naryx.tagfusion.cfm.engine.cfData;
import com.naryx.tagfusion.cfm.engine.cfSession;
import com.naryx.tagfusion.cfm.engine.cfStringData;
import com.naryx.tagfusion.cfm.engine.cfmRunTimeException;

public class GetUrl extends AmazonBase {
    private static final long serialVersionUID = 1L;

    public GetUrl() {
        min = 3;
        max = 4;
        setNamedParams(new String[] { "datasource", "bucket", "key", "expiration" });
    }

    @Override
    public String[] getParamInfo() {
        return new String[] { "Amazon datasource", "Amazon bucket", "Full key",
                "Optional date to expire the url; can be a CFML date or the number of seconds" };
    }

    @Override
    public java.util.Map<String, String> getInfo() {
        return makeInfo("amazon",
                "Amazon S3: Returns back a signed URL that gives people public access to a given file, with an optional expiration date",
                ReturnType.STRING);
    }

    @Override
    public cfData execute(cfSession _session, cfArgStructData argStruct) throws cfmRunTimeException {

        AmazonKey amazonKey = getAmazonKey(_session, argStruct);
        AmazonS3 s3Client = getAmazonS3(amazonKey);

        String bucket = getNamedStringParam(argStruct, "bucket", null);
        String key = getNamedStringParam(argStruct, "key", null);

        if (bucket == null)
            throwException(_session, "Please specify a bucket");

        if (key == null)
            throwException(_session, "Please specify a key");

        if (key.charAt(0) == '/')
            key = key.substring(1);

        cfData expired = getNamedParam(argStruct, "expiration", null);
        try {
            Date expirationDate;
            if (expired != null) {
                if (expired.getDataType() == cfData.CFDATEDATA)
                    expirationDate = new Date(expired.getLong());
                else
                    expirationDate = new Date(System.currentTimeMillis() + (expired.getLong() * DateUtil.SECS_MS));
            } else {
                expirationDate = new Date(System.currentTimeMillis() + DateUtil.DAY_MS * 7);
            }

            GeneratePresignedUrlRequest g = new GeneratePresignedUrlRequest(bucket, key);
            g.setExpiration(expirationDate);

            return new cfStringData(s3Client.generatePresignedUrl(g).toString());
        } catch (Exception e) {
            throwException(_session, "AmazonS3: " + e.getMessage());
            return cfBooleanData.FALSE;
        }
    }

}