ch.rasc.wampspring.message.CallErrorMessage.java Source code

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Here is the source code for ch.rasc.wampspring.message.CallErrorMessage.java

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/**
 * Copyright 2014-2015 Ralph Schaer <ralphschaer@gmail.com>
 *
 * 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 ch.rasc.wampspring.message;

import java.io.IOException;
import java.io.StringWriter;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;

/**
 * When the remote procedure call could not be executed, an error or exception occurred
 * during the execution or the execution of the remote procedure finishes unsuccessfully
 * for any other reason, the server responds by sending this message
 * <p>
 * Server-to-Client message
 *
 * @see <a href="http://wamp.ws/spec/wamp1/#callerror_message">WAMP specification</a>
 */
public class CallErrorMessage extends WampMessage {
    private final String callID;

    private final String errorURI;

    private final String errorDesc;

    private final Object errorDetails;

    public CallErrorMessage(CallMessage callMessage, String errorURI, String errorDesc) {
        this(callMessage, errorURI, errorDesc, null);
    }

    public CallErrorMessage(CallMessage callMessage, String errorURI, String errorDesc, Object errorDetails) {
        super(WampMessageType.CALLERROR);
        this.callID = callMessage.getCallID();
        this.errorURI = errorURI;
        this.errorDesc = errorDesc;
        this.errorDetails = errorDetails;

        setWebSocketSessionId(callMessage.getWebSocketSessionId());
        setPrincipal(callMessage.getPrincipal());
    }

    public CallErrorMessage(JsonParser jp) throws IOException {
        super(WampMessageType.CALLERROR);

        if (jp.nextToken() != JsonToken.VALUE_STRING) {
            throw new IOException();
        }
        this.callID = jp.getValueAsString();

        if (jp.nextToken() != JsonToken.VALUE_STRING) {
            throw new IOException();
        }
        this.errorURI = jp.getValueAsString();

        if (jp.nextToken() != JsonToken.VALUE_STRING) {
            throw new IOException();
        }
        this.errorDesc = jp.getValueAsString();

        if (jp.nextToken() != JsonToken.END_ARRAY) {
            this.errorDetails = jp.readValueAs(Object.class);
        } else {
            this.errorDetails = null;
        }
    }

    public String getCallID() {
        return this.callID;
    }

    public String getErrorURI() {
        return this.errorURI;
    }

    public String getErrorDesc() {
        return this.errorDesc;
    }

    public Object getErrorDetails() {
        return this.errorDetails;
    }

    @Override
    public String toJson(JsonFactory jsonFactory) throws IOException {
        try (StringWriter sw = new StringWriter(); JsonGenerator jg = jsonFactory.createGenerator(sw)) {
            jg.writeStartArray();
            jg.writeNumber(getTypeId());
            jg.writeString(this.callID);
            jg.writeString(this.errorURI);
            jg.writeString(this.errorDesc);
            if (this.errorDetails != null) {
                jg.writeObject(this.errorDetails);
            }
            jg.writeEndArray();
            jg.close();

            return sw.toString();
        }
    }

    @Override
    public String toString() {
        return "CallErrorMessage [callID=" + this.callID + ", errorURI=" + this.errorURI + ", errorDesc="
                + this.errorDesc + ", errorDetails=" + this.errorDetails + "]";
    }

}