001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     matic
018 */
019package org.nuxeo.ecm.automation.client.jaxrs.spi.marshallers;
020
021import java.io.IOException;
022
023import org.nuxeo.ecm.automation.client.Constants;
024import org.nuxeo.ecm.automation.client.RemoteException;
025import org.nuxeo.ecm.automation.client.jaxrs.spi.JsonMarshaller;
026import org.nuxeo.ecm.automation.client.jaxrs.spi.JsonMarshalling;
027
028import com.fasterxml.jackson.core.JsonGenerator;
029import com.fasterxml.jackson.core.JsonParser;
030import com.fasterxml.jackson.core.JsonToken;
031
032/**
033 * @author matic
034 */
035public class ExceptionMarshaller implements JsonMarshaller<RemoteException> {
036
037    @Override
038    public String getType() {
039        return "exception";
040    }
041
042    @Override
043    public Class<RemoteException> getJavaType() {
044        return RemoteException.class;
045    }
046
047    public static RemoteException readException(String content) throws IOException {
048        try (JsonParser jp = JsonMarshalling.getFactory().createParser(content)) {
049            jp.nextToken(); // skip {
050            return _read(jp);
051        }
052    }
053
054    @Override
055    public RemoteException read(JsonParser jp) throws IOException {
056        return _read(jp);
057    }
058
059    public static RemoteException _read(JsonParser jp) throws IOException {
060        int status = 0;
061        String type = null, message = null;
062        Throwable cause = null;
063        JsonToken tok = jp.nextToken();
064        while (tok != null && tok != JsonToken.END_OBJECT) {
065            String key = jp.getCurrentName();
066            tok = jp.nextToken();
067            if ("status".equals(key)) {
068                if (tok == JsonToken.VALUE_NUMBER_INT) {
069                    status = jp.getIntValue();
070                } else {
071                    status = Integer.parseInt(jp.getText());
072                }
073            } else if (Constants.KEY_ENTITY_TYPE.equals(key) || "type".equals(key)) {
074                type = jp.getText();
075            } else if ("message".equals(key)) {
076                message = jp.getText();
077            } else if ("exception".equals(key) || "cause".equals(key)) {
078                cause = jp.readValueAs(Throwable.class);
079            }
080            tok = jp.nextToken();
081        }
082        if (tok == null) {
083            throw new IllegalArgumentException("Unexpected end of stream.");
084        }
085        return new RemoteException(status, type, message, cause);
086    }
087
088    @Override
089    public void write(JsonGenerator jg, Object value) {
090        throw new UnsupportedOperationException();
091    }
092
093}