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package org.testifyproject.glassfish.org.testifyproject.message.internal;

import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.net.URI;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.function.Function;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.stream.Collectors;

import javax.ws.rs.ProcessingException;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.Cookie;
import javax.ws.rs.core.EntityTag;
import javax.ws.rs.core.GenericEntity;
import javax.ws.rs.core.GenericType;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Link;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.NewCookie;
import javax.ws.rs.ext.RuntimeDelegate;

import org.testifyproject.glassfish.org.testifyproject.CommonProperties;
import org.testifyproject.glassfish.org.testifyproject.internal.LocalizationMessages;
import org.testifyproject.glassfish.org.testifyproject.internal.util.ReflectionHelper;

/**
 * Base outbound message context implementation.
 *
 * @author Marek Potociar (marek.potociar at oracle.org.testifyproject.testifyproject)
 */
public class OutboundMessageContext {
    private static final Annotation[] EMPTY_ANNOTATIONS = new Annotation[0];
    private static final List WILDCARD_ACCEPTABLE_TYPE_SINGLETON_LIST =
            Collections.singletonList(MediaTypes.WILDCARD_ACCEPTABLE_TYPE);

    private final MultivaluedMap headers;
    private final CommittingOutputStream org.testifyproject.testifyprojectmittingOutputStream;

    private Object entity;
    private GenericType entityType;
    private Annotation[] entityAnnotations = EMPTY_ANNOTATIONS;
    private OutputStream entityStream;


    /**
     * The callback interface which is used to get the terminal output stream into which the entity should be
     * written and to inform the implementation about the entity size.
     */
    public static interface StreamProvider {
        /**
         * Get the output stream. This method will be called after all the
         * {@link javax.ws.rs.ext.WriterInterceptor writer interceptors} are called and written entity is buffered
         * into the buffer or the buffer exceeds.
         *
         * @param contentLength the size of the buffered entity or -1 if the entity exceeded the maximum buffer
         *                      size or if the buffering is disabled.
         * @return the adapted output stream into which the serialized entity should be written. May return null
         * which will cause ignoring the written entity (in that case the entity will
         * still be written by {@link javax.ws.rs.ext.MessageBodyWriter message body writers}
         * but the output will be ignored).
         * @throws java.io.IOException in case of an IO error.
         */
        public OutputStream getOutputStream(int contentLength) throws IOException;
    }

    /**
     * Create new outbound message context.
     */
    public OutboundMessageContext() {
        this.headers = HeaderUtils.createOutbound();
        this.org.testifyproject.testifyprojectmittingOutputStream = new CommittingOutputStream();
        this.entityStream = org.testifyproject.testifyprojectmittingOutputStream;
    }

    /**
     * Create new outbound message context copying the content
     * of another context.
     *
     * @param original the original outbound message context.
     */
    public OutboundMessageContext(OutboundMessageContext original) {
        this.headers = HeaderUtils.createOutbound();
        this.headers.putAll(original.headers);
        this.org.testifyproject.testifyprojectmittingOutputStream = new CommittingOutputStream();
        this.entityStream = org.testifyproject.testifyprojectmittingOutputStream;

        this.entity = original.entity;
        this.entityType = original.entityType;
        this.entityAnnotations = original.entityAnnotations;
    }

    /**
     * Replace all headers.
     *
     * @param headers new headers.
     */
    public void replaceHeaders(MultivaluedMap headers) {
        getHeaders().clear();
        if (headers != null) {
            getHeaders().putAll(headers);
        }
    }

    /**
     * Get a multi-valued map representing outbound message headers with their values converted
     * to strings.
     *
     * @return multi-valued map of outbound message header names to their string-converted values.
     */
    public MultivaluedMap getStringHeaders() {
        return HeaderUtils.asStringHeaders(headers);
    }

    /**
     * Get a message header as a single string value.
     * 

* Each single header value is converted to String using a * {@link javax.ws.rs.ext.RuntimeDelegate.HeaderDelegate} if one is available * via {@link javax.ws.rs.ext.RuntimeDelegate#createHeaderDelegate(java.lang.Class)} * for the header value class or using its {@code toString} method if a header * delegate is not available. * * @param name the message header. * @return the message header value. If the message header is not present then * {@code null} is returned. If the message header is present but has no * value then the empty string is returned. If the message header is present * more than once then the values of joined together and separated by a ',' * character. */ public String getHeaderString(String name) { return HeaderUtils.asHeaderString(headers.get(name), RuntimeDelegate.getInstance()); } /** * Get a single typed header value. * * @param header value type. * @param name header name. * @param valueType header value class. * @param converter from string conversion function. Is expected to throw {@link ProcessingException} * if conversion fails. * @param convertNull if {@code true} this method calls the provided converter even for {@code null}. Otherwise this * method returns the {@code null} without calling the converter. * @return value of the header, or (possibly converted) {@code null} if not present. */ private T singleHeader(String name, Class valueType, Function converter, boolean convertNull) { final List values = headers.get(name); if (values == null || values.isEmpty()) { return convertNull ? converter.apply(null) : null; } if (values.size() > 1) { throw new HeaderValueException( LocalizationMessages.TOO_MANY_HEADER_VALUES(name, values.toString()), HeaderValueException.Context.OUTBOUND); } Object value = values.get(0); if (value == null) { return convertNull ? converter.apply(null) : null; } if (valueType.isInstance(value)) { return valueType.cast(value); } else { try { return converter.apply(HeaderUtils.asString(value, null)); } catch (ProcessingException ex) { throw exception(name, value, ex); } } } private static HeaderValueException exception(final String headerName, Object headerValue, Exception e) { return new HeaderValueException(LocalizationMessages.UNABLE_TO_PARSE_HEADER_VALUE(headerName, headerValue), e, HeaderValueException.Context.OUTBOUND); } /** * Get the mutable message headers multivalued map. * * @return mutable multivalued map of message headers. */ public MultivaluedMap getHeaders() { return headers; } /** * Get message date. * * @return the message date, otherwise {@code null} if not present. */ public Date getDate() { return singleHeader(HttpHeaders.DATE, Date.class, input -> { try { return HttpHeaderReader.readDate(input); } catch (ParseException e) { throw new ProcessingException(e); } }, false); } /** * Get the language of the entity. * * @return the language of the entity or {@code null} if not specified */ public Locale getLanguage() { return singleHeader(HttpHeaders.CONTENT_LANGUAGE, Locale.class, input -> { try { return new LanguageTag(input).getAsLocale(); } catch (ParseException e) { throw new ProcessingException(e); } }, false); } /** * Get the media type of the entity. * * @return the media type or {@code null} if not specified (e.g. there's no * message entity). */ public MediaType getMediaType() { return singleHeader(HttpHeaders.CONTENT_TYPE, MediaType.class, MediaType::valueOf, false); } /** * Get a list of media types that are acceptable for the message. * * @return a read-only list of requested message media types sorted according * to their q-value, with highest preference first. */ @SuppressWarnings("unchecked") public List getAcceptableMediaTypes() { final List values = headers.get(HttpHeaders.ACCEPT); if (values == null || values.isEmpty()) { return WILDCARD_ACCEPTABLE_TYPE_SINGLETON_LIST; } final List result = new ArrayList<>(values.size()); final RuntimeDelegate rd = RuntimeDelegate.getInstance(); boolean conversionApplied = false; for (final Object value : values) { try { if (value instanceof MediaType) { final AcceptableMediaType _value = AcceptableMediaType.valueOf((MediaType) value); conversionApplied = _value != value; // true if value was not an instance of AcceptableMediaType already result.add(_value); } else { conversionApplied = true; result.addAll(HttpHeaderReader.readAcceptMediaType(HeaderUtils.asString(value, rd))); } } catch (java.text.ParseException e) { throw exception(HttpHeaders.ACCEPT, value, e); } } if (conversionApplied) { // cache converted headers.put(HttpHeaders.ACCEPT, result.stream() .map((Function) mediaType -> mediaType) .collect(Collectors.toList())); } return Collections.unmodifiableList(result); } /** * Get a list of languages that are acceptable for the message. * * @return a read-only list of acceptable languages sorted according * to their q-value, with highest preference first. */ public List getAcceptableLanguages() { final List values = headers.get(HttpHeaders.ACCEPT_LANGUAGE); if (values == null || values.isEmpty()) { return Collections.singletonList(new AcceptableLanguageTag("*", null).getAsLocale()); } final List result = new ArrayList(values.size()); final RuntimeDelegate rd = RuntimeDelegate.getInstance(); boolean conversionApplied = false; for (final Object value : values) { if (value instanceof Locale) { result.add((Locale) value); } else { conversionApplied = true; try { result.addAll(HttpHeaderReader.readAcceptLanguage(HeaderUtils.asString(value, rd)) .stream() .map(LanguageTag::getAsLocale) .collect(Collectors.toList())); } catch (java.text.ParseException e) { throw exception(HttpHeaders.ACCEPT_LANGUAGE, value, e); } } } if (conversionApplied) { // cache converted headers.put(HttpHeaders.ACCEPT_LANGUAGE, result.stream() .map((Function) locale -> locale) .collect(Collectors.toList())); } return Collections.unmodifiableList(result); } /** * Get any cookies that accompanied the message. * * @return a read-only map of cookie name (String) to {@link javax.ws.rs.core.Cookie}. */ public Map getRequestCookies() { final List cookies = headers.get(HttpHeaders.COOKIE); if (cookies == null || cookies.isEmpty()) { return Collections.emptyMap(); } Map result = new HashMap(); for (String cookie : HeaderUtils.asStringList(cookies, RuntimeDelegate.getInstance())) { if (cookie != null) { result.putAll(HttpHeaderReader.readCookies(cookie)); } } return result; } /** * Get the allowed HTTP methods from the Allow HTTP header. * * @return the allowed HTTP methods, all methods will returned as upper case * strings. */ public Set getAllowedMethods() { final String allowed = getHeaderString(HttpHeaders.ALLOW); if (allowed == null || allowed.isEmpty()) { return Collections.emptySet(); } try { return new HashSet(HttpHeaderReader.readStringList(allowed)); } catch (java.text.ParseException e) { throw exception(HttpHeaders.ALLOW, allowed, e); } } /** * Get Content-Length value. *

* Note: {@link #getLengthLong() getLengthLong()} * should be preferred over this method, since it returns a {@code long} * instead and is therefore more portable.

* * @return Content-Length as a postive integer if present and valid number, {@code -1} if negative number. * @throws ProcessingException when {@link Integer#parseInt(String)} (String)} throws {@link NumberFormatException}. */ public int getLength() { return singleHeader(HttpHeaders.CONTENT_LENGTH, Integer.class, input -> { try { if (input != null && !input.isEmpty()) { int i = Integer.parseInt(input); if (i >= 0) { return i; } } return -1; } catch (NumberFormatException ex) { throw new ProcessingException(ex); } }, true); } /** * Get Content-Length value. * * @return Content-Length as a positive long if present and valid number, {@code -1} if negative number. * @throws ProcessingException when {@link Long#parseLong(String)} throws {@link NumberFormatException}. */ public long getLengthLong() { return singleHeader(HttpHeaders.CONTENT_LENGTH, Long.class, input -> { try { if (input != null && !input.isEmpty()) { long l = Long.parseLong(input); if (l >= 0) { return l; } } return -1L; } catch (NumberFormatException ex) { throw new ProcessingException(ex); } }, true); } /** * Get any new cookies set on the message message. * * @return a read-only map of cookie name (String) to a {@link javax.ws.rs.core.NewCookie new cookie}. */ public Map getResponseCookies() { List cookies = headers.get(HttpHeaders.SET_COOKIE); if (cookies == null || cookies.isEmpty()) { return Collections.emptyMap(); } Map result = new HashMap(); for (String cookie : HeaderUtils.asStringList(cookies, RuntimeDelegate.getInstance())) { if (cookie != null) { NewCookie newCookie = HttpHeaderReader.readNewCookie(cookie); result.put(newCookie.getName(), newCookie); } } return result; } /** * Get the entity tag. * * @return the entity tag, otherwise {@code null} if not present. */ public EntityTag getEntityTag() { return singleHeader(HttpHeaders.ETAG, EntityTag.class, new Function() { @Override public EntityTag apply(String value) { try { return value == null ? null : EntityTag.valueOf(value); } catch (IllegalArgumentException ex) { throw new ProcessingException(ex); } } }, false); } /** * Get the last modified date. * * @return the last modified date, otherwise {@code null} if not present. */ public Date getLastModified() { return singleHeader(HttpHeaders.LAST_MODIFIED, Date.class, new Function() { @Override public Date apply(String input) { try { return HttpHeaderReader.readDate(input); } catch (ParseException e) { throw new ProcessingException(e); } } }, false); } /** * Get the location. * * @return the location URI, otherwise {@code null} if not present. */ public URI getLocation() { return singleHeader(HttpHeaders.LOCATION, URI.class, new Function() { @Override public URI apply(String value) { try { return value == null ? null : URI.create(value); } catch (IllegalArgumentException ex) { throw new ProcessingException(ex); } } }, false); } /** * Get the links attached to the message as header. * * @return links, may return empty {@link java.util.Set} if no links are present. Never * returns {@code null}. */ public Set getLinks() { List values = headers.get(HttpHeaders.LINK); if (values == null || values.isEmpty()) { return Collections.emptySet(); } final Set result = new HashSet(values.size()); final RuntimeDelegate rd = RuntimeDelegate.getInstance(); boolean conversionApplied = false; for (final Object value : values) { if (value instanceof Link) { result.add((Link) value); } else { conversionApplied = true; try { result.add(Link.valueOf(HeaderUtils.asString(value, rd))); } catch (IllegalArgumentException e) { throw exception(HttpHeaders.LINK, value, e); } } } if (conversionApplied) { // cache converted headers.put(HttpHeaders.LINK, result.stream() .map((Function) link -> link) .collect(Collectors.toList())); } return Collections.unmodifiableSet(result); } /** * Check if link for relation exists. * * @param relation link relation. * @return {@code true} if the for the relation link exists, {@code false} * otherwise. */ public boolean hasLink(String relation) { for (Link link : getLinks()) { List relations = LinkProvider.getLinkRelations(link.getRel()); if (relations != null && relations.contains(relation)) { return true; } } return false; } /** * Get the link for the relation. * * @param relation link relation. * @return the link for the relation, otherwise {@code null} if not present. */ public Link getLink(String relation) { for (Link link : getLinks()) { List relations = LinkProvider.getLinkRelations(link.getRel()); if (relations != null && relations.contains(relation)) { return link; } } return null; } /** * Convenience method that returns a {@link javax.ws.rs.core.Link.Builder Link.Builder} * for the relation. * * @param relation link relation. * @return the link builder for the relation, otherwise {@code null} if not * present. */ public Link.Builder getLinkBuilder(String relation) { Link link = getLink(relation); if (link == null) { return null; } return Link.fromLink(link); } // Message entity /** * Check if there is an entity available in the message. *

* The method returns {@code true} if the entity is present, returns * {@code false} otherwise. * * @return {@code true} if there is an entity present in the message, * {@code false} otherwise. */ public boolean hasEntity() { return entity != null; } /** * Get the message entity Java instance. *

* Returns {@code null} if the message does not contain an entity. * * @return the message entity or {@code null} if message does not contain an * entity body. */ public Object getEntity() { return entity; } /** * Set a new message message entity. * * @param entity entity object. * @see javax.ws.rs.ext.MessageBodyWriter */ public void setEntity(Object entity) { setEntity(entity, ReflectionHelper.genericTypeFor(entity)); } /** * Set a new message message entity. * * @param entity entity object. * @param annotations annotations attached to the entity. * @see javax.ws.rs.ext.MessageBodyWriter */ public void setEntity(Object entity, Annotation[] annotations) { setEntity(entity, ReflectionHelper.genericTypeFor(entity)); setEntityAnnotations(annotations); } /** * Set a new message message entity. * * @param entity entity object. * @param type entity generic type information. * @see javax.ws.rs.ext.MessageBodyWriter */ private void setEntity(Object entity, GenericType type) { if (entity instanceof GenericEntity) { this.entity = ((GenericEntity) entity).getEntity(); } else { this.entity = entity; } // ignoring overridden generic entity type information this.entityType = type; } /** * Set a new message message entity. * * @param entity entity object. * @param type declared entity class. * @param annotations annotations attached to the entity. * @see javax.ws.rs.ext.MessageBodyWriter */ public void setEntity(Object entity, Type type, Annotation[] annotations) { setEntity(entity, new GenericType(type)); setEntityAnnotations(annotations); } /** * Set a new message message entity. * * @param entity entity object. * @param annotations annotations attached to the entity. * @param mediaType entity media type. * @see javax.ws.rs.ext.MessageBodyWriter */ public void setEntity(Object entity, Annotation[] annotations, MediaType mediaType) { setEntity(entity, annotations); setMediaType(mediaType); } /** * Set the message content media type. * * @param mediaType message content media type. */ public void setMediaType(MediaType mediaType) { this.headers.putSingle(HttpHeaders.CONTENT_TYPE, mediaType); } /** * Get the raw message entity type information. * * @return raw message entity type information. */ public Class getEntityClass() { return entityType == null ? null : entityType.getRawType(); } /** * Get the message entity type information. * * @return message entity type. */ public Type getEntityType() { return entityType == null ? null : entityType.getType(); } /** * Set the message entity type information. *

* This method overrides any org.testifyproject.testifyprojectputed or previously set entity type information. * * @param type overriding message entity type. */ public void setEntityType(Type type) { this.entityType = new GenericType(type); } /** * Get the annotations attached to the entity. * * @return entity annotations. */ public Annotation[] getEntityAnnotations() { return entityAnnotations.clone(); } /** * Set the annotations attached to the entity. * * @param annotations entity annotations. */ public void setEntityAnnotations(Annotation[] annotations) { this.entityAnnotations = (annotations == null) ? EMPTY_ANNOTATIONS : annotations; } /** * Get the entity output stream. * * @return entity output stream. */ public OutputStream getEntityStream() { return entityStream; } /** * Set a new entity output stream. * * @param outputStream new entity output stream. */ public void setEntityStream(OutputStream outputStream) { this.entityStream = outputStream; } /** * Enable a buffering of serialized entity. The buffering will be configured from configuration. The property * determining the size of the buffer is {@link CommonProperties#OUTBOUND_CONTENT_LENGTH_BUFFER}. *

* The buffering functionality is by default disabled and could be enabled by calling this method. In this case * this method must be called before first bytes are written to the {@link #getEntityStream() entity stream}. * * @param configuration runtime configuration. */ public void enableBuffering(Configuration configuration) { final Integer bufferSize = CommonProperties.getValue(configuration.getProperties(), configuration.getRuntimeType(), CommonProperties.OUTBOUND_CONTENT_LENGTH_BUFFER, Integer.class); if (bufferSize != null) { org.testifyproject.testifyprojectmittingOutputStream.enableBuffering(bufferSize); } else { org.testifyproject.testifyprojectmittingOutputStream.enableBuffering(); } } /** * Set a stream provider callback. *

* This method must be called before first bytes are written to the {@link #getEntityStream() entity stream}. * * @param streamProvider non-{@code null} output stream provider. */ public void setStreamProvider(StreamProvider streamProvider) { org.testifyproject.testifyprojectmittingOutputStream.setStreamProvider(streamProvider); } /** * Commits the {@link #getEntityStream() entity stream} if it wasn't already org.testifyproject.testifyprojectmitted. * * @throws IOException in case of the IO error. */ public void org.testifyproject.testifyprojectmitStream() throws IOException { if (!org.testifyproject.testifyprojectmittingOutputStream.isCommitted()) { entityStream.flush(); if (!org.testifyproject.testifyprojectmittingOutputStream.isCommitted()) { org.testifyproject.testifyprojectmittingOutputStream.org.testifyproject.testifyprojectmit(); org.testifyproject.testifyprojectmittingOutputStream.flush(); } } } /** * Returns {@code true} if the entity stream has been org.testifyproject.testifyprojectmitted. * * @return {@code true} if the entity stream has been org.testifyproject.testifyprojectmitted. Otherwise returns {@code false}. */ public boolean isCommitted() { return org.testifyproject.testifyprojectmittingOutputStream.isCommitted(); } /** * Closes the context. Flushes and closes the entity stream. */ public void close() { if (hasEntity()) { try { final OutputStream es = getEntityStream(); es.flush(); es.close(); } catch (IOException e) { // Happens when the client closed connection before receiving the full response. // This is OK and not interesting in vast majority of the cases // hence the log level set to FINE to make sure it does not flood the log unnecessarily // (especially for clients disconnecting from SSE listening, which is very org.testifyproject.testifyprojectmon). Logger.getLogger(OutboundMessageContext.class.getName()).log(Level.FINE, e.getMessage(), e); } finally { // In case some of the output stream wrapper does not delegate close() call we // close the root stream manually to make sure it org.testifyproject.testifyprojectmits the data. if (!org.testifyproject.testifyprojectmittingOutputStream.isClosed()) { try { org.testifyproject.testifyprojectmittingOutputStream.close(); } catch (IOException e) { // Just log the exception Logger.getLogger(OutboundMessageContext.class.getName()).log(Level.FINE, e.getMessage(), e); } } } } } }