org.springframework.data.solr.server.support.SolrClientUtils.java Source code

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Here is the source code for org.springframework.data.solr.server.support.SolrClientUtils.java

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/*
 * Copyright 2012 - 2018 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
 *
 * https://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.springframework.data.solr.server.support;

import java.io.Closeable;
import java.lang.reflect.Method;

import org.apache.commons.lang3.StringUtils;
import org.apache.solr.client.solrj.SolrClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.dao.DataAccessResourceFailureException;
import org.springframework.data.solr.core.mapping.SolrDocument;
import org.springframework.util.Assert;
import org.springframework.util.ReflectionUtils;

/**
 * {@link SolrClientUtils} replaces SolrServerUtils from version 1.x
 *
 * @author Christoph Strobl
 * @since 2.0
 */
public class SolrClientUtils {

    private static final Logger logger = LoggerFactory.getLogger(SolrClientUtils.class);
    private static final String SLASH = "/";

    private SolrClientUtils() {
    }

    /**
     * Resolve solr core/collection name for given type.
     *
     * @param type
     * @return empty string if {@link SolrDocument} not present or {@link SolrDocument#solrCoreName()} is blank.
     * @since 1.1
     */
    public static String resolveSolrCoreName(Class<?> type) {
        SolrDocument annotation = AnnotationUtils.findAnnotation(type, SolrDocument.class);
        if (annotation != null && StringUtils.isNotBlank(annotation.solrCoreName())) {
            return annotation.solrCoreName();
        }
        return "";
    }

    /**
     * Close the {@link SolrClient} by calling {@link SolrClient#close()} or {@code shutdown} for the generation 5
     * libraries.
     *
     * @param solrClient must not be {@literal null}.
     * @throws DataAccessResourceFailureException
     * @since 2.1
     */
    public static void close(SolrClient solrClient) {

        Assert.notNull(solrClient, "SolrClient must not be null!");

        try {
            if (solrClient instanceof Closeable) {
                solrClient.close();
            } else {
                Method shutdownMethod = ReflectionUtils.findMethod(solrClient.getClass(), "shutdown");
                if (shutdownMethod != null) {
                    shutdownMethod.invoke(solrClient);
                }
            }
        } catch (Exception e) {
            throw new DataAccessResourceFailureException("Cannot close SolrClient", e);
        }
    }
}