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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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 *
 * Copyright (c) 2011-2015 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
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 * file and include the License file at packager/legal/LICENSE.txt.
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package org.glassfish.jersey.server.internal.routing;

import java.lang.reflect.Method;
import java.net.URI;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.regex.MatchResult;

import javax.ws.rs.core.MultivaluedHashMap;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.PathSegment;
import javax.ws.rs.core.UriBuilder;

import org.glassfish.jersey.internal.util.collection.ImmutableMultivaluedMap;
import org.glassfish.jersey.message.internal.TracingLogger;
import org.glassfish.jersey.server.ContainerRequest;
import org.glassfish.jersey.server.internal.ServerTraceEvent;
import org.glassfish.jersey.server.internal.process.Endpoint;
import org.glassfish.jersey.server.model.Resource;
import org.glassfish.jersey.server.model.ResourceMethod;
import org.glassfish.jersey.server.model.ResourceMethodInvoker;
import org.glassfish.jersey.server.model.RuntimeResource;
import org.glassfish.jersey.uri.UriComponent;
import org.glassfish.jersey.uri.UriTemplate;
import org.glassfish.jersey.uri.internal.JerseyUriBuilder;

import jersey.repackaged.com.google.common.base.Function;
import jersey.repackaged.com.google.common.collect.Lists;

/**
 * Default implementation of the routing context as well as URI information provider.
 *
 * @author Marek Potociar (marek.potociar at oracle.com)
 */
public class UriRoutingContext implements RoutingContext {

    private final LinkedList matchResults = Lists.newLinkedList();
    private final LinkedList matchedResources = Lists.newLinkedList();
    private final LinkedList templates = Lists.newLinkedList();

    private final MultivaluedHashMap encodedTemplateValues = new MultivaluedHashMap<>();
    private final ImmutableMultivaluedMap encodedTemplateValuesView =
            new ImmutableMultivaluedMap<>(encodedTemplateValues);

    private MultivaluedHashMap decodedTemplateValues;
    private ImmutableMultivaluedMap decodedTemplateValuesView;

    private ImmutableMultivaluedMap encodedQueryParamsView;
    private ImmutableMultivaluedMap decodedQueryParamsView;

    private final LinkedList paths = Lists.newLinkedList();
    private Endpoint endpoint;
    private final LinkedList matchedRuntimeResources = Lists.newLinkedList();
    private volatile ResourceMethod matchedResourceMethod = null;
    private final LinkedList matchedLocators = Lists.newLinkedList();
    private final LinkedList locatorSubResources = Lists.newLinkedList();

    private final TracingLogger tracingLogger;

    /**
     * Injection constructor.
     *
     * @param requestContext      request reference.
     */
    public UriRoutingContext(ContainerRequest requestContext) {
        this.requestContext = requestContext;
        this.tracingLogger = TracingLogger.getInstance(requestContext);
    }

    // RoutingContext
    @Override
    public void pushMatchResult(MatchResult matchResult) {
        matchResults.push(matchResult);
    }

    @Override
    public void pushMatchedResource(Object resource) {
        tracingLogger.log(ServerTraceEvent.MATCH_RESOURCE, resource);
        matchedResources.push(resource);
    }

    @Override
    public Object peekMatchedResource() {
        return matchedResources.peek();
    }

    @Override
    public void pushMatchedLocator(ResourceMethod resourceLocator) {
        tracingLogger.log(ServerTraceEvent.MATCH_LOCATOR, resourceLocator.getInvocable().getHandlingMethod());
        matchedLocators.push(resourceLocator);
    }

    @Override
    public void pushLeftHandPath() {
        final String rightHandPath = getFinalMatchingGroup();
        final int rhpLength = (rightHandPath != null) ? rightHandPath.length() : 0;

        final String encodedRequestPath = getPath(false);

        int length = encodedRequestPath.length() - rhpLength;
        if (length <= 0) {
            paths.addFirst("");
        } else {
            paths.addFirst(encodedRequestPath.substring(0, length));
        }
    }

    @Override
    public void pushTemplates(UriTemplate resourceTemplate, UriTemplate methodTemplate) {
        final Iterator matchResultIterator = matchResults.iterator();
        templates.push(resourceTemplate);
        if (methodTemplate != null) {
            templates.push(methodTemplate);
            // fast-forward the match result iterator to second element in the stack
            matchResultIterator.next();
        }

        pushMatchedTemplateValues(resourceTemplate, matchResultIterator.next());
        if (methodTemplate != null) {
            // use the match result from the top of the stack
            pushMatchedTemplateValues(methodTemplate, matchResults.peek());
        }
    }

    private void pushMatchedTemplateValues(UriTemplate template, MatchResult matchResult) {
        int i = 1;
        for (String templateVariable : template.getTemplateVariables()) {
            final String value = matchResult.group(i++);
            encodedTemplateValues.addFirst(templateVariable, value);
            if (decodedTemplateValues != null) {
                decodedTemplateValues.addFirst(
                        UriComponent.decode(templateVariable, UriComponent.Type.PATH_SEGMENT),
                        UriComponent.decode(value, UriComponent.Type.PATH));
            }
        }
    }

    @Override
    public String getFinalMatchingGroup() {
        final MatchResult mr = matchResults.peek();
        if (mr == null) {
            return null;
        }

        String finalGroup = mr.group(mr.groupCount());
        // We have found a match but the right hand path pattern did not match anything
        // so just returning an empty string as a final matching group result.
        // Otherwise a non-empty patterns would fail to match the right-hand-path properly.
        // See also PatternWithGroups.match(CharSequence) implementation.
        return finalGroup == null ? "" : finalGroup;
    }

    @Override
    public LinkedList getMatchedResults() {
        return matchResults;
    }

    @Override
    public void setEndpoint(final Endpoint endpoint) {
        this.endpoint = endpoint;
    }

    @Override
    public Endpoint getEndpoint() {
        return endpoint;
    }

    @Override
    public void setMatchedResourceMethod(ResourceMethod resourceMethod) {
        tracingLogger.log(ServerTraceEvent.MATCH_RESOURCE_METHOD, resourceMethod.getInvocable().getHandlingMethod());
        this.matchedResourceMethod = resourceMethod;
    }

    @Override
    public void pushMatchedRuntimeResource(RuntimeResource runtimeResource) {
        if (tracingLogger.isLogEnabled(ServerTraceEvent.MATCH_RUNTIME_RESOURCE)) {
            tracingLogger.log(ServerTraceEvent.MATCH_RUNTIME_RESOURCE,
                    runtimeResource.getResources().get(0).getPath(),
                    runtimeResource.getResources().get(0).getPathPattern().getRegex(),
                    matchResults.peek().group()
                            .substring(0, matchResults.peek().group().length() - getFinalMatchingGroup().length()),
                    matchResults.peek().group());
        }

        this.matchedRuntimeResources.push(runtimeResource);
    }

    @Override
    public void pushLocatorSubResource(Resource subResourceFromLocator) {
        this.locatorSubResources.push(subResourceFromLocator);
    }

    // UriInfo
    private final ContainerRequest requestContext;

    @Override
    public URI getAbsolutePath() {
        return requestContext.getAbsolutePath();
    }

    @Override
    public UriBuilder getAbsolutePathBuilder() {
        return new JerseyUriBuilder().uri(getAbsolutePath());
    }

    @Override
    public URI getBaseUri() {
        return requestContext.getBaseUri();
    }

    @Override
    public UriBuilder getBaseUriBuilder() {
        return new JerseyUriBuilder().uri(getBaseUri());
    }

    @Override
    public List getMatchedResources() {
        return Collections.unmodifiableList(matchedResources);
    }

    @Override
    public List getMatchedURIs() {
        return getMatchedURIs(true);
    }

    // TODO Replace with Java SE 8 lambda sometime in the future.
    private static final Function PATH_DECODER = new Function() {

        @Override
        public String apply(String input) {
            return UriComponent.decode(input, UriComponent.Type.PATH);
        }

    };

    @Override
    public List getMatchedURIs(boolean decode) {
        final List result;
        if (decode) {
            result = Lists.transform(paths, PATH_DECODER);
        } else {
            result = paths;
        }
        return Collections.unmodifiableList(result);
    }

    @Override
    public String getPath() {
        return requestContext.getPath(true);
    }

    @Override
    public String getPath(boolean decode) {
        return requestContext.getPath(decode);
    }

    @Override
    public MultivaluedMap getPathParameters() {
        return getPathParameters(true);
    }

    @Override
    public MultivaluedMap getPathParameters(boolean decode) {
        if (decode) {
            if (decodedTemplateValuesView != null) {
                return decodedTemplateValuesView;
            } else if (decodedTemplateValues == null) {
                decodedTemplateValues = new MultivaluedHashMap<>();
                for (Map.Entry> e : encodedTemplateValues.entrySet()) {
                    decodedTemplateValues.put(
                            UriComponent.decode(e.getKey(), UriComponent.Type.PATH_SEGMENT),
                            // we need to keep the ability to add new entries
                            new LinkedList<>(Lists.transform(e.getValue(), new Function() {

                                @Override
                                public String apply(String input) {
                                    return UriComponent.decode(input, UriComponent.Type.PATH);
                                }
                            })));
                }
            }
            decodedTemplateValuesView = new ImmutableMultivaluedMap<>(decodedTemplateValues);

            return decodedTemplateValuesView;
        } else {
            return encodedTemplateValuesView;
        }
    }

    @Override
    public List getPathSegments() {
        return getPathSegments(true);
    }

    @Override
    public List getPathSegments(boolean decode) {
        final String requestPath = requestContext.getPath(false);
        return Collections.unmodifiableList(UriComponent.decodePath(requestPath, decode));
    }

    @Override
    public MultivaluedMap getQueryParameters() {
        return getQueryParameters(true);
    }

    @Override
    public MultivaluedMap getQueryParameters(boolean decode) {
        if (decode) {
            if (decodedQueryParamsView != null) {
                return decodedQueryParamsView;
            }

            decodedQueryParamsView =
                    new ImmutableMultivaluedMap<>(UriComponent.decodeQuery(getRequestUri(), true));

            return decodedQueryParamsView;
        } else {
            if (encodedQueryParamsView != null) {
                return encodedQueryParamsView;
            }

            encodedQueryParamsView =
                    new ImmutableMultivaluedMap<>(UriComponent.decodeQuery(getRequestUri(), false));

            return encodedQueryParamsView;

        }
    }

    /**
     * Invalidate internal URI component cache views.
     * 

     * This method needs to be called if request URI information changes.
     * 

     */
    public void invalidateUriComponentViews() {
        this.decodedQueryParamsView = null;
        this.encodedQueryParamsView = null;
    }

    @Override
    public URI getRequestUri() {
        return requestContext.getRequestUri();
    }

    @Override
    public UriBuilder getRequestUriBuilder() {
        return UriBuilder.fromUri(getRequestUri());
    }

    // ExtendedUriInfo
    @Override
    public Throwable getMappedThrowable() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public List getMatchedTemplates() {
        return Collections.unmodifiableList(templates);
    }

    @Override
    public List getPathSegments(String name) {
        return getPathSegments(name, true);
    }

    @Override
    public List getPathSegments(String name, boolean decode) {
        int[] bounds = getPathParameterBounds(name);
        if (bounds != null) {
            String path = matchResults.getLast().group();
            // Work out how many path segments are up to the start
            // and end position of the matching path parameter value
            // This assumes that the path always starts with a '/'
            int segmentsStart = 0;
            for (int x = 0; x < bounds[0]; x++) {
                if (path.charAt(x) == '/') {
                    segmentsStart++;
                }
            }
            int segmentsEnd = segmentsStart;
            for (int x = bounds[0]; x < bounds[1]; x++) {
                if (path.charAt(x) == '/') {
                    segmentsEnd++;
                }
            }

            return getPathSegments(decode).subList(segmentsStart - 1, segmentsEnd);
        } else {
            return Collections.emptyList();
        }
    }

    private int[] getPathParameterBounds(String name) {
        Iterator templatesIterator = templates.iterator();
        Iterator matchResultsIterator = matchResults.iterator();
        while (templatesIterator.hasNext()) {
            MatchResult mr = matchResultsIterator.next();
            // Find the index of path parameter
            int pIndex = getLastPathParameterIndex(name, templatesIterator.next());
            if (pIndex != -1) {
                int pathLength = mr.group().length();
                int segmentIndex = mr.end(pIndex + 1);
                int groupLength = segmentIndex - mr.start(pIndex + 1);

                // Find the absolute position of the end of the
                // capturing group in the request path
                while (matchResultsIterator.hasNext()) {
                    mr = matchResultsIterator.next();
                    segmentIndex += mr.group().length() - pathLength;
                    pathLength = mr.group().length();
                }
                return new int[]{segmentIndex - groupLength, segmentIndex};
            }
        }
        return null;
    }

    private int getLastPathParameterIndex(String name, UriTemplate t) {
        int i = 0;
        int pIndex = -1;
        for (String parameterName : t.getTemplateVariables()) {
            if (parameterName.equals(name)) {
                pIndex = i;
            }
            i++;
        }
        return pIndex;
    }

    @Override
    public Method getResourceMethod() {
        return endpoint instanceof ResourceMethodInvoker
                ? ((ResourceMethodInvoker) endpoint).getResourceMethod() : null;
    }

    @Override
    public Class getResourceClass() {
        return endpoint instanceof ResourceMethodInvoker
                ? ((ResourceMethodInvoker) endpoint).getResourceClass() : null;
    }

    @Override
    public List getMatchedRuntimeResources() {
        return this.matchedRuntimeResources;
    }

    @Override
    public ResourceMethod getMatchedResourceMethod() {
        return matchedResourceMethod;
    }

    @Override
    public List getMatchedResourceLocators() {
        return matchedLocators;
    }

    @Override
    public List getLocatorSubResources() {
        return locatorSubResources;
    }

    @Override
    public Resource getMatchedModelResource() {
        return matchedResourceMethod == null ? null : matchedResourceMethod.getParent();
    }


    @Override
    public URI resolve(URI uri) {
        return UriTemplate.resolve(getBaseUri(), uri);
    }

    @Override
    public URI relativize(URI uri) {
        if (!uri.isAbsolute()) {
            uri = resolve(uri);
        }

        return UriTemplate.relativize(getRequestUri(), uri);
    }
}
 















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