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 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.
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package org.elasticsearch.search.compress;

import org.elasticsearch.Version;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.common.Priority;
import org.elasticsearch.common.compress.Compressor;
import org.elasticsearch.common.compress.CompressorFactory;
import org.elasticsearch.common.compress.lzf.LZFTestCompressor;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.test.ESSingleNodeTestCase;
import org.junit.Test;

import java.io.IOException;

import static org.hamcrest.Matchers.equalTo;

public class SearchSourceCompressTests  extends ESSingleNodeTestCase {
    
    @Test
    public void testSourceCompressionLZF() throws IOException {
        final Compressor defaultCompressor = CompressorFactory.defaultCompressor();
        try {
            CompressorFactory.setDefaultCompressor(new LZFTestCompressor());
            verifySource(true);
            verifySource(false);
            verifySource(null);
        } finally {
            CompressorFactory.setDefaultCompressor(defaultCompressor);
        }
    }

    private void verifySource(Boolean compress) throws IOException {
        try {
            client().admin().indices().prepareDelete("test").execute().actionGet();
        } catch (Exception e) {
            // ignore
        }
        Settings settings = Settings.builder().put(IndexMetaData.SETTING_VERSION_CREATED, Version.V_1_4_2.id).build();
        createIndex("test", settings);
        client().admin().cluster().prepareHealth().setWaitForEvents(Priority.LANGUID).setWaitForGreenStatus().execute().actionGet();

        String mapping = XContentFactory.jsonBuilder().startObject().startObject("type1")
                .startObject("_source").field("enabled", true).field("compress", compress).endObject()
                .endObject().endObject().string();

        client().admin().indices().preparePutMapping().setType("type1").setSource(mapping).execute().actionGet();

        for (int i = 1; i < 100; i++) {
            client().prepareIndex("test", "type1", Integer.toString(i)).setSource(buildSource(i)).execute().actionGet();
        }
        client().prepareIndex("test", "type1", Integer.toString(10000)).setSource(buildSource(10000)).execute().actionGet();

        client().admin().indices().prepareRefresh().execute().actionGet();

        for (int i = 1; i < 100; i++) {
            GetResponse getResponse = client().prepareGet("test", "type1", Integer.toString(i)).execute().actionGet();
            assertThat(getResponse.getSourceAsBytes(), equalTo(buildSource(i).bytes().toBytes()));
        }
        GetResponse getResponse = client().prepareGet("test", "type1", Integer.toString(10000)).execute().actionGet();
        assertThat(getResponse.getSourceAsBytes(), equalTo(buildSource(10000).bytes().toBytes()));

        for (int i = 1; i < 100; i++) {
            SearchResponse searchResponse = client().prepareSearch().setQuery(QueryBuilders.idsQuery("type1").ids(Integer.toString(i))).execute().actionGet();
            assertThat(searchResponse.getHits().getTotalHits(), equalTo(1l));
            assertThat(searchResponse.getHits().getAt(0).source(), equalTo(buildSource(i).bytes().toBytes()));
        }
    }

    private XContentBuilder buildSource(int count) throws IOException {
        XContentBuilder builder = XContentFactory.jsonBuilder().startObject();
        StringBuilder sb = new StringBuilder();
        for (int j = 0; j < count; j++) {
            sb.append("value").append(j).append(' ');
        }
        builder.field("field", sb.toString());
        return builder.endObject();
    }
}