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 * Licensed to Elasticsearch under one or more contributor
 * 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.
 */

package org.elasticsearch.consistencylevel;

import org.elasticsearch.action.UnavailableShardsException;
import org.elasticsearch.action.WriteConsistencyLevel;
import org.elasticsearch.action.admin.cluster.health.ClusterHealthResponse;
import org.elasticsearch.action.admin.cluster.health.ClusterHealthStatus;
import org.elasticsearch.common.Priority;
import org.elasticsearch.common.settings.ImmutableSettings;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.test.ElasticsearchIntegrationTest;
import org.junit.Test;

import static org.elasticsearch.common.unit.TimeValue.timeValueMillis;
import static org.elasticsearch.common.unit.TimeValue.timeValueSeconds;
import static org.hamcrest.Matchers.equalTo;

/**
 *
 */
public class WriteConsistencyLevelTests extends ElasticsearchIntegrationTest {


    @Test
    public void testWriteConsistencyLevelReplication2() throws Exception {
        prepareCreate("test", 1, ImmutableSettings.settingsBuilder().put("index.number_of_shards", 1).put("index.number_of_replicas", 2)).execute().actionGet();

        ClusterHealthResponse clusterHealth = client().admin().cluster().prepareHealth().setWaitForEvents(Priority.LANGUID).setWaitForActiveShards(1).setWaitForYellowStatus().execute().actionGet();
        logger.info("Done Cluster Health, status " + clusterHealth.getStatus());
        assertThat(clusterHealth.isTimedOut(), equalTo(false));
        assertThat(clusterHealth.getStatus(), equalTo(ClusterHealthStatus.YELLOW));

        // indexing, by default, will work (ONE consistency level)
        client().prepareIndex("test", "type1", "1").setSource(source("1", "test")).setConsistencyLevel(WriteConsistencyLevel.ONE).execute().actionGet();
        try {
            client().prepareIndex("test", "type1", "1").setSource(source("1", "test"))
                    .setConsistencyLevel(WriteConsistencyLevel.QUORUM)
                    .setTimeout(timeValueMillis(100)).execute().actionGet();
            fail("can't index, does not match consistency");
        } catch (UnavailableShardsException e) {
            assertThat(e.status(), equalTo(RestStatus.SERVICE_UNAVAILABLE));
            assertThat(e.getMessage(), equalTo("[test][0] Not enough active copies to meet write consistency of [QUORUM] (have 1, needed 2). Timeout: [100ms], request: index {[test][type1][1], source[{ type1 : { \"id\" : \"1\", \"name\" : \"test\" } }]}"));
            // but really, all is well
        }

        allowNodes("test", 2);

        clusterHealth = client().admin().cluster().prepareHealth().setWaitForEvents(Priority.LANGUID).setWaitForActiveShards(2).setWaitForYellowStatus().execute().actionGet();
        logger.info("Done Cluster Health, status " + clusterHealth.getStatus());
        assertThat(clusterHealth.isTimedOut(), equalTo(false));
        assertThat(clusterHealth.getStatus(), equalTo(ClusterHealthStatus.YELLOW));

        // this should work, since we now have 
        client().prepareIndex("test", "type1", "1").setSource(source("1", "test"))
                .setConsistencyLevel(WriteConsistencyLevel.QUORUM)
                .setTimeout(timeValueSeconds(1)).execute().actionGet();

        try {
            client().prepareIndex("test", "type1", "1").setSource(source("1", "test"))
                    .setConsistencyLevel(WriteConsistencyLevel.ALL)
                    .setTimeout(timeValueMillis(100)).execute().actionGet();
            fail("can't index, does not match consistency");
        } catch (UnavailableShardsException e) {
            assertThat(e.status(), equalTo(RestStatus.SERVICE_UNAVAILABLE));
            assertThat(e.getMessage(), equalTo("[test][0] Not enough active copies to meet write consistency of [ALL] (have 2, needed 3). Timeout: [100ms], request: index {[test][type1][1], source[{ type1 : { \"id\" : \"1\", \"name\" : \"test\" } }]}"));
            // but really, all is well
        }

        allowNodes("test", 3);
        clusterHealth = client().admin().cluster().prepareHealth().setWaitForEvents(Priority.LANGUID).setWaitForActiveShards(3).setWaitForGreenStatus().execute().actionGet();
        logger.info("Done Cluster Health, status " + clusterHealth.getStatus());
        assertThat(clusterHealth.isTimedOut(), equalTo(false));
        assertThat(clusterHealth.getStatus(), equalTo(ClusterHealthStatus.GREEN));

        // this should work, since we now have
        client().prepareIndex("test", "type1", "1").setSource(source("1", "test"))
                .setConsistencyLevel(WriteConsistencyLevel.ALL)
                .setTimeout(timeValueSeconds(1)).execute().actionGet();
    }

    private String source(String id, String nameValue) {
        return "{ type1 : { \"id\" : \"" + id + "\", \"name\" : \"" + nameValue + "\" } }";
    }
}
