/*
 * 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.integrationtests;

import io.crate.action.sql.SQLOperations;
import io.crate.testing.SQLTransportExecutor;
import org.elasticsearch.client.Client;
import org.elasticsearch.test.ESIntegTestCase;
import org.junit.Test;

import static org.hamcrest.Matchers.is;

@ESIntegTestCase.ClusterScope(numDataNodes = 1, numClientNodes = 2, supportsDedicatedMasters = false)
public class ClientNodeIntegrationTest extends SQLTransportIntegrationTest {

    public ClientNodeIntegrationTest() {
        super(new SQLTransportExecutor(
            new SQLTransportExecutor.ClientProvider() {
                @Override
                public Client client() {
                    // make sure we use a client node (started with client=true)
                    return internalCluster().coordOnlyNodeClient();
                }

                @Override
                public String pgUrl() {
                    return null;
                }

                @Override
                public SQLOperations sqlOperations() {
                    return internalCluster().getInstance(SQLOperations.class);
                }
            }
        ));
    }

    /**
     * Test that requests to all nodes (e.g. sys.nodes) will work if run on a client node
     * (Without a patch, ES will prevent client-to-client connections)
     * related patch: https://github.com/crate/elasticsearch/commit/f0c180e9ea5f84a4540e982c9e5c6af0be2c8143
     */
    @Test
    public void testNodesSQLRequestOnClientNode() throws Exception {
        execute("select * from sys.nodes");
        assertThat(response.rowCount(), is(3L));
    }
}