org.eclipse.jetty.ee8.nested.CrossContextServletContext Maven / Gradle / Ivy

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The jetty core handler adapted to legacy ee8 handler.
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//
// ========================================================================
// Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.ee8.nested;

import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.file.Path;
import java.util.Collections;
import java.util.Enumeration;
import java.util.EventListener;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.stream.Collectors;
import javax.servlet.Filter;
import javax.servlet.FilterRegistration;
import javax.servlet.RequestDispatcher;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
import javax.servlet.SessionCookieConfig;
import javax.servlet.SessionTrackingMode;
import javax.servlet.descriptor.JspConfigDescriptor;
import org.eclipse.jetty.http.HttpURI;
import org.eclipse.jetty.server.handler.ContextHandler;
import org.eclipse.jetty.util.StringUtil;
import org.eclipse.jetty.util.URIUtil;
import org.eclipse.jetty.util.resource.Resource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A {@link ServletContext} used for cross context dispatch, which wraps an arbitrary {@link ContextHandler}
 */
class CrossContextServletContext implements ServletContext {

    private static final Logger LOG = LoggerFactory.getLogger(CrossContextServletContext.class);

    private final ContextHandler _servletContextHandler;

    private final ContextHandler.ScopedContext _targetContext;

    protected CrossContextServletContext(ContextHandler servletContextHandler, ContextHandler.ScopedContext targetContext) {
        _servletContextHandler = servletContextHandler;
        _targetContext = Objects.requireNonNull(targetContext);
    }

    @Override
    public String getContextPath() {
        return _targetContext.getContextPath();
    }

    @Override
    public ServletContext getContext(String uripath) {
        throw new UnsupportedOperationException();
    }

    @Override
    @Deprecated
    public Servlet getServlet(String name) throws ServletException {
        return null;
    }

    @Override
    @Deprecated
    public Enumeration getServlets() {
        return null;
    }

    @Override
    @Deprecated
    public Enumeration getServletNames() {
        return null;
    }

    @Override
    @Deprecated
    public void log(Exception exception, String msg) {
        log(msg, exception);
    }

    @Override
    public int getMajorVersion() {
        return 5;
    }

    @Override
    public int getMinorVersion() {
        return 0;
    }

    @Override
    public int getEffectiveMajorVersion() {
        return 5;
    }

    @Override
    public int getEffectiveMinorVersion() {
        return 0;
    }

    @Override
    public String getMimeType(String file) {
        return _targetContext.getMimeTypes().getMimeByExtension(file);
    }

    @Override
    public Set getResourcePaths(String path) {
        Resource resource = _targetContext.getBaseResource().resolve(path);
        if (resource != null && resource.isDirectory())
            return resource.list().stream().map(Resource::getPath).map(Path::getFileName).map(Path::toString).collect(Collectors.toSet());
        return null;
    }

    @Override
    public URL getResource(String path) throws MalformedURLException {
        return _targetContext.getBaseResource().resolve(path).getURI().toURL();
    }

    @Override
    public InputStream getResourceAsStream(String path) {
        throw new UnsupportedOperationException();
    }

    @Override
    public RequestDispatcher getRequestDispatcher(String uriInContext) {
        // uriInContext is encoded, potentially with query.
        if (uriInContext == null)
            return null;
        if (!uriInContext.startsWith("/"))
            return null;
        try {
            String contextPath = getContextPath();
            // uriInContext is canonical by HttpURI.
            HttpURI.Mutable uri = HttpURI.build(uriInContext);
            String encodedPathInContext = uri.getCanonicalPath();
            if (StringUtil.isEmpty(encodedPathInContext))
                return null;
            if (!StringUtil.isEmpty(contextPath)) {
                uri.path(URIUtil.addPaths(contextPath, uri.getPath()));
                encodedPathInContext = uri.getCanonicalPath().substring(contextPath.length());
            }
            return new CrossContextDispatcher(this, uri, URIUtil.decodePath(encodedPathInContext));
        } catch (Exception e) {
            LOG.trace("IGNORED", e);
        }
        return null;
    }

    @Override
    public RequestDispatcher getNamedDispatcher(String name) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void log(String msg) {
        LOG.info(msg);
    }

    @Override
    public void log(String message, Throwable throwable) {
        LOG.warn(message, throwable);
    }

    @Override
    public String getRealPath(String path) {
        throw new UnsupportedOperationException();
    }

    @Override
    public String getServerInfo() {
        return _servletContextHandler.getServer().getServerInfo();
    }

    @Override
    public String getInitParameter(String name) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Enumeration getInitParameterNames() {
        throw new UnsupportedOperationException();
    }

    @Override
    public boolean setInitParameter(String name, String value) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Object getAttribute(String name) {
        return _targetContext.getAttribute(name);
    }

    @Override
    public Enumeration getAttributeNames() {
        return Collections.enumeration(_targetContext.getAttributeNameSet());
    }

    @Override
    public void setAttribute(String name, Object object) {
        _targetContext.setAttribute(name, object);
    }

    @Override
    public void removeAttribute(String name) {
        _targetContext.removeAttribute(name);
    }

    @Override
    public String getServletContextName() {
        return _targetContext.getContextHandler().getDisplayName();
    }

    @Override
    public ServletRegistration.Dynamic addServlet(String servletName, String className) {
        throw new UnsupportedOperationException();
    }

    @Override
    public ServletRegistration.Dynamic addServlet(String servletName, Servlet servlet) {
        throw new UnsupportedOperationException();
    }

    @Override
    public ServletRegistration.Dynamic addServlet(String servletName, Class servletClass) {
        throw new UnsupportedOperationException();
    }

    @Override
    public ServletRegistration.Dynamic addJspFile(String servletName, String jspFile) {
        throw new UnsupportedOperationException();
    }

    @Override
    public  T createServlet(Class clazz) throws ServletException {
        throw new UnsupportedOperationException();
    }

    @Override
    public ServletRegistration getServletRegistration(String servletName) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Map getServletRegistrations() {
        throw new UnsupportedOperationException();
    }

    @Override
    public FilterRegistration.Dynamic addFilter(String filterName, String className) {
        throw new UnsupportedOperationException();
    }

    @Override
    public FilterRegistration.Dynamic addFilter(String filterName, Filter filter) {
        throw new UnsupportedOperationException();
    }

    @Override
    public FilterRegistration.Dynamic addFilter(String filterName, Class filterClass) {
        throw new UnsupportedOperationException();
    }

    @Override
    public  T createFilter(Class clazz) throws ServletException {
        throw new UnsupportedOperationException();
    }

    @Override
    public FilterRegistration getFilterRegistration(String filterName) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Map getFilterRegistrations() {
        throw new UnsupportedOperationException();
    }

    @Override
    public SessionCookieConfig getSessionCookieConfig() {
        throw new UnsupportedOperationException();
    }

    @Override
    public void setSessionTrackingModes(Set sessionTrackingModes) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Set getDefaultSessionTrackingModes() {
        throw new UnsupportedOperationException();
    }

    @Override
    public Set getEffectiveSessionTrackingModes() {
        throw new UnsupportedOperationException();
    }

    @Override
    public void addListener(String className) {
        throw new UnsupportedOperationException();
    }

    @Override
    public  void addListener(T t) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void addListener(Class listenerClass) {
        throw new UnsupportedOperationException();
    }

    @Override
    public  T createListener(Class clazz) throws ServletException {
        throw new UnsupportedOperationException();
    }

    @Override
    public JspConfigDescriptor getJspConfigDescriptor() {
        throw new UnsupportedOperationException();
    }

    @Override
    public ClassLoader getClassLoader() {
        return _targetContext.getClassLoader();
    }

    @Override
    public void declareRoles(String... roleNames) {
        throw new UnsupportedOperationException();
    }

    @Override
    public String getVirtualServerName() {
        return null;
    }

    @Override
    public int getSessionTimeout() {
        throw new UnsupportedOperationException();
    }

    @Override
    public void setSessionTimeout(int sessionTimeout) {
        throw new UnsupportedOperationException();
    }

    @Override
    public String getRequestCharacterEncoding() {
        throw new UnsupportedOperationException();
    }

    @Override
    public void setRequestCharacterEncoding(String encoding) {
        throw new UnsupportedOperationException();
    }

    @Override
    public String getResponseCharacterEncoding() {
        throw new UnsupportedOperationException();
    }

    @Override
    public void setResponseCharacterEncoding(String encoding) {
        throw new UnsupportedOperationException();
    }

    ContextHandler.ScopedContext getTargetContext() {
        return _targetContext;
    }
}