group.rxcloud.capa.spi.http.config.CapaSpiProperties Maven / Gradle / Ivy

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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 group.rxcloud.capa.spi.http.config;

import group.rxcloud.capa.infrastructure.CapaClassLoader;

/**
 * The Capa SPI environment.
 */
public abstract class CapaSpiProperties {

    /**
     * Static lock object.
     */
    private static final Object LOCK = new Object();

    private static volatile CapaSpiOptionsLoader instance;

    /**
     * Gets default options loader.
     *
     * @return the default options loader
     */
    public static CapaSpiOptionsLoader getSpiOptionsLoader() {
        if (instance == null) {
            synchronized (LOCK) {
                if (instance == null) {
                    instance = CapaClassLoader.loadComponentClassObj("rpc-common", CapaSpiOptionsLoader.class);
                }
            }
        }
        // load spi rpc impl
        return instance;
    }
}