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/*
 * 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.registry.support;

import org.apache.dubbo.registry.ProviderFirstParams;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import static org.apache.dubbo.common.constants.CommonConstants.DUBBO_VERSION_KEY;
import static org.apache.dubbo.common.constants.CommonConstants.METHODS_KEY;
import static org.apache.dubbo.common.constants.CommonConstants.RELEASE_KEY;
import static org.apache.dubbo.common.constants.CommonConstants.TAG_KEY;
import static org.apache.dubbo.common.constants.CommonConstants.TIMESTAMP_KEY;

public class DefaultProviderFirstParams implements ProviderFirstParams {
    private static final Set PARAMS = Collections.unmodifiableSet(new HashSet() {{
        addAll(Arrays.asList(RELEASE_KEY, DUBBO_VERSION_KEY, METHODS_KEY, TIMESTAMP_KEY, TAG_KEY));
    }});

    @Override
    public Set params() {
        return PARAMS;
    }

}