OSGiServletContext.java

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package com.sun.grizzly.osgi.httpservice;

import org.osgi.service.http.HttpContext;
import com.sun.grizzly.http.servlet.ServletContextImpl;
import com.sun.grizzly.osgi.httpservice.util.Logger;
import com.sun.grizzly.util.http.MimeMap;

import java.net.URL;
import java.net.MalformedURLException;
import java.io.InputStream;
import java.io.IOException;
import static java.text.MessageFormat.format;

/**
 * OSGi {@link ServletContextImpl} integration.
 *
 * @author Hubert Iwaniuk
 */
public class OSGiServletContext extends ServletContextImpl {

    private static final MimeMap MIME_MAP = new MimeMap();
    /**
     * {@link HttpContext} providing OSGi integration.
     */
    private HttpContext httpContext;
    private Logger logger;

    /**
     * Default constructor.
     *
     * @param httpContext {@link org.osgi.service.http.HttpContext} to provide integration with OSGi.
     * @param logger      Logger util.
     */
    public OSGiServletContext(HttpContext httpContext, Logger logger) {
        this.httpContext = httpContext;
        this.logger = logger;
    }

    /**
     * OSGi integration. Uses {@link HttpContext#getResource(String)}.
     * <p/>
     * {@inheritDoc}
     */
    @Override public URL getResource(String path) throws MalformedURLException {
        if (path == null || !path.startsWith("/")) {
            throw new MalformedURLException(path);
        }

        path = normalize(path);
        if (path == null)
            return (null);

        return httpContext.getResource(path);
    }

    /**
     * OSGi integration. Uses {@link HttpContext#getResource(String)}.
     * <p/>
     * {@inheritDoc}
     */
    @Override public InputStream getResourceAsStream(String path) {
        path = normalize(path);
        if (path == null)
            return (null);

        try {
            return httpContext.getResource(path).openStream();
        } catch (IOException e) {
            logger.warn(format("Error getting resource ''{0}''. Message: {1}", path, e.getMessage()));
        }
        return null;
    }

    /**
     * OSGi integration. Uses {@link HttpContext#getMimeType(String)}.
     * <p/>
     * {@inheritDoc}
     */
    @Override public String getMimeType(String file) {
        String mime = httpContext.getMimeType(file);
        if (mime == null) {
            // if returned null, try figuring out by ourselfs.
            mime = MIME_MAP.getContentTypeFor(file);
        }
        return mime;
    }
}