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 * 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
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package org.elasticsearch.cluster.block;

import org.elasticsearch.Version;
import org.elasticsearch.common.collect.ImmutableOpenMap;
import org.elasticsearch.common.io.stream.BytesStreamOutput;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.test.ESTestCase;

import java.util.Collections;
import java.util.EnumSet;

import static org.elasticsearch.test.VersionUtils.randomVersion;
import static org.hamcrest.CoreMatchers.endsWith;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.not;

public class ClusterBlockTests extends ESTestCase {
    public void testSerialization() throws Exception {
        int iterations = randomIntBetween(10, 100);
        for (int i = 0; i < iterations; i++) {
            // Get a random version
            Version version = randomVersion(random());

            // Get a random list of ClusterBlockLevels
            EnumSet<ClusterBlockLevel> levels = EnumSet.noneOf(ClusterBlockLevel.class);
            int nbLevels = randomIntBetween(1, ClusterBlockLevel.values().length);
            for (int j = 0; j < nbLevels; j++) {
                levels.add(randomFrom(ClusterBlockLevel.values()));
            }

            ClusterBlock clusterBlock = new ClusterBlock(randomInt(), "cluster block #" + randomInt(), randomBoolean(),
                    randomBoolean(), randomFrom(RestStatus.values()), levels);

            BytesStreamOutput out = new BytesStreamOutput();
            out.setVersion(version);
            clusterBlock.writeTo(out);

            StreamInput in = out.bytes().streamInput();
            in.setVersion(version);
            ClusterBlock result = ClusterBlock.readClusterBlock(in);

            assertThat(result.id(), equalTo(clusterBlock.id()));
            assertThat(result.status(), equalTo(clusterBlock.status()));
            assertThat(result.description(), equalTo(clusterBlock.description()));
            assertThat(result.retryable(), equalTo(clusterBlock.retryable()));
            assertThat(result.disableStatePersistence(), equalTo(clusterBlock.disableStatePersistence()));
            assertArrayEquals(result.levels().toArray(), clusterBlock.levels().toArray());
        }
    }

    public void testToStringDanglingComma() {
        EnumSet<ClusterBlockLevel> levels = EnumSet.noneOf(ClusterBlockLevel.class);
        int nbLevels = randomIntBetween(1, ClusterBlockLevel.values().length);
        for (int j = 0; j < nbLevels; j++) {
            levels.add(randomFrom(ClusterBlockLevel.values()));
        }
        ClusterBlock clusterBlock = new ClusterBlock(randomInt(), "cluster block #" + randomInt(), randomBoolean(),
                randomBoolean(), randomFrom(RestStatus.values()), levels);
        assertThat(clusterBlock.toString(), not(endsWith(",")));
    }

    public void testGlobalBlocksCheckedIfNoIndicesSpecified() {
        EnumSet<ClusterBlockLevel> levels = EnumSet.noneOf(ClusterBlockLevel.class);
        int nbLevels = randomIntBetween(1, ClusterBlockLevel.values().length);
        for (int j = 0; j < nbLevels; j++) {
            levels.add(randomFrom(ClusterBlockLevel.values()));
        }
        ClusterBlock globalBlock = new ClusterBlock(randomInt(), "cluster block #" + randomInt(), randomBoolean(),
            randomBoolean(), randomFrom(RestStatus.values()), levels);
        ClusterBlocks clusterBlocks = new ClusterBlocks(Collections.singleton(globalBlock), ImmutableOpenMap.of());
        ClusterBlockException exception = clusterBlocks.indicesBlockedException(randomFrom(globalBlock.levels()), new String[0]);
        assertNotNull(exception);
        assertEquals(exception.blocks(), Collections.singleton(globalBlock));
    }
}