gemlite.core.internal.mq.receiver.file.FileReceiver.java Source code

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Here is the source code for gemlite.core.internal.mq.receiver.file.FileReceiver.java

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/*                                                                         
 * Copyright 2010-2013 the original author or authors.                     
 *                                                                         
 * 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 gemlite.core.internal.mq.receiver.file;

import gemlite.core.common.DateUtil;
import gemlite.core.internal.mq.MqConstant;
import gemlite.core.internal.mq.MqReceiveException;
import gemlite.core.internal.mq.ShellParameter;
import gemlite.core.internal.mq.processor.IMessageProcessor;
import gemlite.core.internal.mq.receiver.HAMqReceiver;
import gemlite.core.util.LogUtil;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
import java.io.UnsupportedEncodingException;

import org.apache.commons.lang.StringUtils;

/**
 * @author ynd
 * 
 */
public class FileReceiver extends HAMqReceiver {
    private FileShellParameter param;

    private LineNumberReader lr;

    public FileReceiver(FileShellParameter param, IMessageProcessor processor) {
        super(processor);
        this.param = param;
    }

    @Override
    protected void doClose() {
        LogUtil.getMqSyncLog().info(" MQ Client closing ... ");
        LogUtil.getMqSyncLog().info(" MQ Client closed. ");
    }

    private String line;

    @Override
    public void connect() {
        try {
            lr = new LineNumberReader(
                    new InputStreamReader(new FileInputStream(param.fileName), param.fileEncoding));
            line = readLine();
        } catch (UnsupportedEncodingException | FileNotFoundException e) {
            LogUtil.getMqSyncLog().error(param.fileName, e);
            throw new MqReceiveException(true);
        }
    }

    private String readLine() {
        try {
            return lr.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    /***
     * ?
     * ???sql?
     */
    @Override
    public String readOneMessage() {
        String sqlDate = "";
        StringBuffer buffer = new StringBuffer();
        // [16:34:32.781-16:34:32.781]update left_base_center set ticke
        // ?
        int i = line.indexOf("]");
        String s0 = line.substring(1, i);
        int k = s0.indexOf("-");
        String s1 = sqlDate + " " + s0.substring(0, k);
        long timestamp = DateUtil.parse(s1).getTime();

        buffer.append("\n" + MqConstant.TIMESTAMP + ":::" + timestamp + "\n");
        line = line.substring(i + 1);
        buffer.append(line).append("\n");
        line = readLine();
        while (line != null) {
            if (!StringUtils.isBlank(line)) {
                if (line.startsWith("["))
                    break;
                buffer.append(line).append("\n");
            }
            line = readLine();
        }

        return buffer.toString();
    }

    /***
     * check if batchSize reached
     * 
     * @throws IOException
     */
    protected void doCommit() throws MqReceiveException {
    }

    @Override
    public void reConnect() {

    }

    @Override
    public ShellParameter getParam() {
        return param;
    }

}