com.wavemaker.spinup.web.VersionProvider.java Source code

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Here is the source code for com.wavemaker.spinup.web.VersionProvider.java

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/*
 *  Copyright (C) 2012-2013 CloudJee, Inc. All rights reserved.
 *
 *  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 com.wavemaker.spinup.web;

import java.util.Scanner;
import java.io.IOException;
import java.io.InputStream;

import javax.servlet.ServletContext;

import org.springframework.stereotype.Component;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.wavemaker.tools.io.local.LocalFolder;
import com.wavemaker.tools.io.zip.ZipArchive;

@Component
public class VersionProvider {

    private final Log log = LogFactory.getLog(VersionProvider.class);

    private String studioVersion = null;

    public String getVersion(ServletContext servletContext) throws IOException {
        String uploadDirName = servletContext.getRealPath(SpinupConstants.STUDIOD_UPLOAD_DIR);
        if (studioVersion != null) {
            return this.studioVersion;
        }
        ZipArchive studioZip = new ZipArchive(new LocalFolder(uploadDirName).getFile(SpinupConstants.STUDIO_FILE));
        InputStream configjs = studioZip.getFile("app/config.js").getContent().asInputStream();
        Scanner s = new Scanner(configjs);
        while (s.hasNext()) {
            String ln = s.nextLine();
            if (ln.contains("studioVersion:")) {
                this.studioVersion = ln.substring(ln.indexOf(":") + 1).replace(",", "").replace("'", "").trim();
                break;
            }
        }
        if (log.isInfoEnabled()) {
            log.info("*** Studio version is: " + this.studioVersion + "***");
        }
        configjs.close();
        return this.studioVersion;

    }
}