/*
 *  Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 *  WSO2 Inc. licenses this file to you 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.wso2.carbon.databridge.receiver.binary.internal;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.osgi.service.component.ComponentContext;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Deactivate;
import org.osgi.service.component.annotations.Reference;
import org.osgi.service.component.annotations.ReferenceCardinality;
import org.osgi.service.component.annotations.ReferencePolicy;
import org.wso2.carbon.databridge.core.DataBridgeReceiverService;
import org.wso2.carbon.databridge.core.exception.DataBridgeException;
import org.wso2.carbon.databridge.receiver.binary.conf.BinaryDataReceiverConfiguration;

import java.io.IOException;

@Component(
        name = "binaryDataReceiver.component",
        immediate = true)
public class BinaryDataReceiverServiceComponent {

    private static final Log log = LogFactory.getLog(BinaryDataReceiverServiceComponent.class);

    private DataBridgeReceiverService dataBridgeReceiverService;

    private static final String DISABLE_RECEIVER = "disable.receiver";

    private BinaryDataReceiver binaryDataReceiver;

    /**
     * initialize the agent server here.
     *
     * @param context
     */
    @Activate
    protected void activate(ComponentContext context) {

        String disableReceiver = System.getProperty(DISABLE_RECEIVER);
        if (disableReceiver != null && Boolean.parseBoolean(disableReceiver)) {
            log.info("Receiver disabled.");
            return;
        }
        binaryDataReceiver = new BinaryDataReceiver(new BinaryDataReceiverConfiguration(dataBridgeReceiverService
                .getInitialConfig()), dataBridgeReceiverService);
        try {
            binaryDataReceiver.start();
        } catch (IOException e) {
            log.error("Error while starting binary data receiver ", e);
        } catch (DataBridgeException e) {
            log.error("Error while starting binary data receiver ", e);
        }
    }

    @Deactivate
    protected void deactivate(ComponentContext context) {

        log.info("Binary Data Receiver server shutting down...");
        binaryDataReceiver.stop();
    }

    @Reference(
            name = "databridge.core",
            service = org.wso2.carbon.databridge.core.DataBridgeReceiverService.class,
            cardinality = ReferenceCardinality.MANDATORY,
            policy = ReferencePolicy.DYNAMIC,
            unbind = "unsetDatabridgeReceiverService")
    protected void setDataBridgeReceiverService(DataBridgeReceiverService dataBridgeReceiverService) {

        this.dataBridgeReceiverService = dataBridgeReceiverService;
    }

    protected void unsetDatabridgeReceiverService(DataBridgeReceiverService dataBridgeReceiverService) {

        this.dataBridgeReceiverService = null;
    }
}
