/*
 * 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.dubbo.rpc.cluster.router.tag.model;

import org.apache.dubbo.common.utils.CollectionUtils;

import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.SafeConstructor;

import java.util.Map;

/**
 *
 */
public class TagRuleParser {

    public static TagRouterRule parse(String rawRule) {
        Yaml yaml = new Yaml(new SafeConstructor());
        Map<String, Object> map = yaml.load(rawRule);
        TagRouterRule rule = TagRouterRule.parseFromMap(map);
        rule.setRawRule(rawRule);
        if (CollectionUtils.isEmpty(rule.getTags())) {
            rule.setValid(false);
        }

        rule.init();
        return rule;
    }
}
