/*
* Copyright 2011 JBoss, by Red Hat, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.errai.bus.client.util;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.jboss.errai.bus.client.ErraiBus;
import org.jboss.errai.bus.client.api.ClientMessageBus;
import org.jboss.errai.bus.client.api.HasEncoded;
import org.jboss.errai.bus.client.api.QueueSession;
import org.jboss.errai.bus.client.api.SessionEndListener;
import org.jboss.errai.bus.client.api.base.CommandMessage;
import org.jboss.errai.bus.client.api.messaging.Message;
import org.jboss.errai.bus.client.api.messaging.RequestDispatcher;
import org.jboss.errai.common.client.api.ResourceProvider;
import org.jboss.errai.marshalling.client.MarshallingSessionProviderFactory;
import org.jboss.errai.marshalling.client.api.json.EJValue;
import org.jboss.errai.marshalling.client.api.json.impl.gwt.GWTJSON;
import org.jboss.errai.marshalling.client.marshallers.ErraiProtocolEnvelopeNoAutoMarshaller;
import org.jboss.errai.marshalling.client.protocols.ErraiProtocol;
import org.slf4j.LoggerFactory;
import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONParser;
import com.google.gwt.json.client.JSONValue;
public class BusToolsCli {
private static boolean autoDemarshall = true;
public static boolean decodeToCallback(final String jsonString, final ClientMessageBus bus) {
//LogUtil.log("[bus] RX: " + jsonString);
final List<Message> messages = decodePayload(jsonString);
for (final Message message : messages) {
bus.sendLocal(message);
}
return messages.size() > 0;
}
public static List<Message> decodePayload(final String jsonString) {
if (jsonString == null || jsonString.trim().length() == 0) return Collections.emptyList();
final JSONValue val = JSONParser.parseStrict(jsonString);
if (val == null || val.isArray() == null) {
throw new RuntimeException("illegal payload: must be JSONArray");
}
final JSONArray jsonArray = val.isArray();
final List<Message> messageList = new ArrayList<Message>(jsonArray.size());
for (int i = 0; i < jsonArray.size(); i++) {
messageList.add(decodeCommandMessage(GWTJSON.wrap(jsonArray.get(i))));
}
return messageList;
}
public static String encodeMessage(final Message message) {
if (message instanceof HasEncoded) {
return ((HasEncoded) message).getEncoded();
}
else {
return ErraiProtocol.encodePayload(message.getParts());
}
}
public static String encodeMessages(final Collection<Message> messages) {
final StringBuilder sbuf = new StringBuilder("[");
boolean first = true;
for (final Message m : messages) {
if (!first) {
sbuf.append(',');
}
sbuf.append(encodeMessage(m));
first = false;
}
return sbuf.append("]").toString();
}
public static Message decodeCommandMessage(final EJValue value) {
return CommandMessage.createWithParts(decodePayloadMap(value))
.setResource(RequestDispatcher.class.getName(), requestDispatcherProvider)
.setResource("Session", clientSession);
}
@SuppressWarnings({"unchecked"})
private static Map<String, Object> decodePayloadMap(final EJValue value) {
if (autoDemarshall) {
return ErraiProtocol.decodePayload(value);
}
else {
LoggerFactory.getLogger(BusToolsCli.class).info("using no-auto envelope demarshaller");
return ErraiProtocolEnvelopeNoAutoMarshaller.INSTANCE.demarshall(value, MarshallingSessionProviderFactory.getEncoding());
}
}
private static final QueueSession clientSession = new QueueSession() {
private Map<String, Object> attributes = new HashMap<String, Object>();
@Override
public String getSessionId() {
return "<InBus>";
}
@Override
public String getParentSessionId() {
return "<InBus>";
}
@Override
public boolean endSession() {
return false;
}
@Override
public void setAttribute(final String attribute, final Object value) {
attributes.put(attribute, value);
}
@Override
public <T> T getAttribute(final Class<T> type, final String attribute) {
return (T) attributes.get(attribute);
}
@Override
public Collection<String> getAttributeNames() {
return attributes.keySet();
}
@Override
public boolean hasAttribute(final String attribute) {
return attributes.containsKey(attribute);
}
@Override
public Object removeAttribute(final String attribute) {
return attributes.remove(attribute);
}
@Override
public void addSessionEndListener(final SessionEndListener listener) {
}
@Override
public boolean isValid() {
return true;
}
};
public static QueueSession getClientSession() {
return clientSession;
}
private static final ResourceProvider<RequestDispatcher> requestDispatcherProvider
= new ResourceProvider<RequestDispatcher>() {
@Override
public RequestDispatcher get() {
return ErraiBus.getDispatcher();
}
};
public static ResourceProvider<RequestDispatcher> getRequestDispatcherProvider() {
return requestDispatcherProvider;
}
public static void setAutoDemarshall(final boolean autoDemarshall1) {
autoDemarshall = autoDemarshall1;
}
/**
* Sets the application root for the remote message bus endpoints.
*
* @param path
* path to use when sending requests to the JAX-RS endpoint
*/
@SuppressWarnings("UnusedDeclaration")
public static native void setApplicationRoot(final String path) /*-{
if (path == null) {
$wnd.erraiBusApplicationRoot = undefined;
}
else {
$wnd.erraiBusApplicationRoot = path;
}
}-*/;
/**
* Returns the application root for the remote message bus endpoints.
*
* @return path with trailing slash, or empty string if undefined or
* explicitly set to empty
*/
public static native String getApplicationRoot() /*-{
//noinspection JSUnresolvedVariable
if ($wnd.erraiBusApplicationRoot === undefined || $wnd.erraiBusApplicationRoot.length === 0) {
return "";
}
else {
//noinspection JSUnresolvedVariable
if ($wnd.erraiBusApplicationRoot.substr(-1) !== "/") {
//noinspection JSUnresolvedVariable
return $wnd.erraiBusApplicationRoot + "/";
}
//noinspection JSUnresolvedVariable
return $wnd.erraiBusApplicationRoot;
}
}-*/;
/**
* Checks whether remote bus communication is enabled.
* <p/>
* The JavaScript variable <code>erraiBusRemoteCommunicationEnabled</code> can
* be used to control this value. If the variable is not present in the window
* object, the default value <code>true</code> is returned.
*
* @return true if remote communication enabled, otherwise false.
*/
public static native boolean isRemoteCommunicationEnabled() /*-{
//noinspection JSUnresolvedVariable
if ($wnd.erraiBusRemoteCommunicationEnabled === undefined || $wnd.erraiBusRemoteCommunicationEnabled.length === 0) {
return true;
}
else {
//noinspection JSUnresolvedVariable
return $wnd.erraiBusRemoteCommunicationEnabled;
}
}-*/;
}