DolphinScheduler/dolphinscheduler-task-plugin/dolphinscheduler-task-api/src/main/java/org/apache/dolphinscheduler/plugin/task/api/utils/VarPoolUtils.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.apache.dolphinscheduler.plugin.task.api.utils;

import org.apache.dolphinscheduler.plugin.task.api.TaskConstants;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import lombok.experimental.UtilityClass;

@UtilityClass
public class VarPoolUtils {

    static final Pattern DSVALUE_REGEX = Pattern.compile(TaskConstants.DSVALUE_REGEX);
    public static final String VAR_SUFFIX = ")dsVal}";

    public static final String VAR_DELIMITER = "$VarPool$";
    /**
     * find var pool
     *
     * @param line
     * @return
     */
    public static String findVarPool(String line) {
        Matcher matcher = DSVALUE_REGEX.matcher(line);
        if (matcher.find()) {
            return matcher.group(1);
        }
        return null;
    }
}