io.honeybadger.com.jcabi.manifests.ServletMfs Maven / Gradle / Ivy
/**
* Copyright (c) 2012-2014, jcabi.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met: 1) Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer. 2) Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution. 3) Neither the name of the jcabi.com nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jcabi.manifests;
import com.jcabi.log.Logger;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collection;
import javax.servlet.ServletContext;
/**
* Manifests in servlet context.
*
* Append attributes from the web application {@code MANIFEST.MF}.
*
* You can use this class in your own
* {@link javax.servlet.Filter} or
* {@link javax.servlet.ServletContextListener},
* in order to inject {@code MANIFEST.MF} attributes to the class:
*
*
Manifests.append(new ServletMfs(context));
*
* The class is thread-safe.
*
* @author Yegor Bugayenko ([email protected])
* @version $Id$
* @since 1.0
*/
public final class ServletMfs implements Mfs {
/**
* Servlet context.
*/
private final transient ServletContext ctx;
/**
* Ctor.
* @param context Context
*/
public ServletMfs(final ServletContext context) {
this.ctx = context;
}
@Override
public Collection fetch() throws IOException {
final URL main = this.ctx.getResource("/META-INF/MANIFEST.MF");
final Collection streams = new ArrayList(1);
if (main == null) {
Logger.warn(this, "MANIFEST.MF not found in WAR package");
} else {
streams.add(main.openStream());
}
return streams;
}
}