org.qaclana.services.messagesender.MessageSender.java Source code

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Here is the source code for org.qaclana.services.messagesender.MessageSender.java

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/*
 * Copyright 2016 Juraci Paixo Krhling
 * and other contributors as indicated by the @author tags.
 *
 * 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.qaclana.services.messagesender;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.qaclana.api.entity.event.SendMessage;

import javax.ejb.Asynchronous;
import javax.ejb.Stateless;
import javax.enterprise.event.Observes;
import javax.websocket.Session;
import java.io.IOException;

/**
 * Sends messages to socket destinations.
 *
 * @author Juraci Paixo Krhling
 */
@Stateless
public class MessageSender {
    private static final MsgLogger log = MsgLogger.LOGGER;
    private static final ObjectMapper JSON_MAPPER = new ObjectMapper();

    static {
        JSON_MAPPER.findAndRegisterModules();
        JSON_MAPPER.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
    }

    @Asynchronous
    public void send(@Observes SendMessage event) {
        log.sendingMessageToDestination(event.getDestination().getId(), event.getMessage().getType());

        String messageAsJson;
        try {
            messageAsJson = JSON_MAPPER.writeValueAsString(event.getMessage());
        } catch (JsonProcessingException e) {
            log.failedToConvertMessageToJson(event.getMessage().toString(), e);
            return;
        }

        Session session = event.getDestination();
        try {
            session.getBasicRemote().sendText(messageAsJson);
        } catch (IOException e) {
            log.failedToSendMessageToDestination(session.getId(), e);
        }
    }
}