com.jkoolcloud.jesl.simulator.tnt4j.JKCloudConnection.java Source code

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Here is the source code for com.jkoolcloud.jesl.simulator.tnt4j.JKCloudConnection.java

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/*
 * Copyright 2015 JKOOL, LLC.
 *
 * 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 com.jkoolcloud.jesl.simulator.tnt4j;

import java.io.IOException;
import java.net.URISyntaxException;

import org.apache.commons.lang3.StringUtils;

import com.jkoolcloud.jesl.net.JKClient;
import com.jkoolcloud.tnt4j.TrackingLogger;
import com.jkoolcloud.tnt4j.sink.EventSink;

/**
 * JESL Cloud connection class that encapsulates streaming to jKool Cloud servers
 * using HTTP[S] or TCP[S] protocols.
 *
 * @version $Revision: $
 */
public class JKCloudConnection {
    private String gwUrl;
    private String accessToken;

    private JKClient jkHandle;
    private TrackingLogger logger;

    public JKCloudConnection(String url, String accessToken, TrackingLogger logger) {
        this.gwUrl = url.toLowerCase();
        this.accessToken = accessToken;
        this.logger = logger;
    }

    protected EventSink getEventSink() {
        return (logger == null ? null : logger.getEventSink());
    }

    public boolean isOpen() {
        return (jkHandle != null);
    }

    public synchronized void open() throws IOException {
        if (isOpen())
            return;

        try {
            jkHandle = new JKClient(gwUrl, getEventSink());
            jkHandle.connect(accessToken);
        } catch (URISyntaxException e) {
            close();
            throw new IOException(e.getMessage(), e);
        }
    }

    public synchronized void write(String msg) throws IOException {
        if (StringUtils.isEmpty(msg))
            return;

        if (!isOpen())
            open();

        try {
            if (jkHandle != null)
                jkHandle.send(msg, false);
            else
                throw new IOException("Connection not opened");
        } catch (IOException e) {
            close();
            throw e;
        }
    }

    public synchronized void close() throws IOException {
        if (jkHandle != null) {
            jkHandle.close();
            jkHandle = null;
        }
    }

    @Override
    public String toString() {
        return gwUrl;
    }
}