/*
 * Licensed to Crate under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.  Crate 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.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial
 * agreement.
 */

package io.crate.operation.collect;

import com.google.common.base.Throwables;
import com.google.common.collect.Lists;
import io.crate.integrationtests.SQLTransportIntegrationTest;
import io.crate.operation.collect.sources.ShardCollectSource;
import org.elasticsearch.action.admin.indices.close.CloseIndexRequest;
import org.elasticsearch.index.shard.ShardId;
import org.junit.Test;

import java.lang.reflect.Field;
import java.util.List;
import java.util.Map;

import static org.hamcrest.Matchers.is;

public class ShardCollectorProviderTest extends SQLTransportIntegrationTest {

    public void assertNoShardEntriesLeftInShardCollectSource() throws Exception {
        final Field shards = ShardCollectSource.class.getDeclaredField("shards");
        shards.setAccessible(true);
        final List<ShardCollectSource> shardCollectSources = Lists.newArrayList((internalCluster().getInstances(ShardCollectSource.class)));
        for (ShardCollectSource shardCollectSource : shardCollectSources) {
            try {
                //noinspection unchecked
                Map<ShardId, ShardCollectorProvider> shardMap = (Map<ShardId, ShardCollectorProvider>) shards.get(shardCollectSource);
                assertThat(shardMap.size(), is(0));
            } catch (IllegalAccessException e) {
                Throwables.propagate(e);
            }
        }
    }

    @Test
    public void testClosedIndicesHaveNoShardEntries() throws Exception {
        execute("create table t(i int) with (number_of_replicas='0-all')");
        ensureGreen();
        client().admin().indices().close(new CloseIndexRequest("t")).actionGet();
        waitUntilShardOperationsFinished();
        assertNoShardEntriesLeftInShardCollectSource();
    }

    @Test
    public void testDeletedIndicesHaveNoShardEntries() throws Exception {
        execute("create table tt(i int) with (number_of_replicas='0-all')");
        ensureGreen();
        execute("drop table tt");
        waitUntilShardOperationsFinished();
        assertNoShardEntriesLeftInShardCollectSource();
    }
}