CassandraUnitUtils.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.apache.camel.component.cassandra;

import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.Session;
import org.cassandraunit.CQLDataLoader;
import org.cassandraunit.CassandraCQLUnit;
import org.cassandraunit.dataset.CQLDataSet;
import org.cassandraunit.dataset.cql.ClassPathCQLDataSet;
import org.cassandraunit.utils.EmbeddedCassandraServerHelper;

import static org.apache.camel.component.cassandra.BaseCassandraTest.canTest;

/**
 * Util methods to manage Cassandra in Unit tests
 */
public final class CassandraUnitUtils {
    public static final String HOST = "127.0.0.1";
    public static final String KEYSPACE = "camel_ks";

    private static CassandraCQLUnit cassandraCQLUnit;

    private CassandraUnitUtils() {
    }

    /**
     * Create Cassandra JUnit Rule.
     */
    public static CassandraCQLUnit cassandraCQLUnit() {
        if (canTest()) {
            if (cassandraCQLUnit == null) {
                cassandraCQLUnit = cassandraCQLUnit("BasicDataSet.cql");
            }
        }
        return cassandraCQLUnit;
    }

    public static CassandraCQLUnit cassandraCQLUnit(String dataSetCql) {
        if (canTest()) {
            return cassandraCQLUnit(cqlDataSet(dataSetCql));
        } else {
            return null;
        }
    }

    public static CQLDataSet cqlDataSet(String dataSetCql) {
        if (canTest()) {
            return new ClassPathCQLDataSet(dataSetCql, KEYSPACE);
        } else {
            return null;
        }
    }

    public static void loadCQLDataSet(Session session, String dataSetCql) {
        if (canTest()) {
            CQLDataLoader loader = new CQLDataLoader(session);
            loader.load(cqlDataSet(dataSetCql));
        }
    }

    public static CassandraCQLUnit cassandraCQLUnit(CQLDataSet dataset) {
        if (canTest()) {
            return new CassandraCQLUnit(dataset, "/camel-cassandra.yaml");
        } else {
            return null;
        }
    }

    /**
     * Start embedded Cassandra.
     */
    public static void startEmbeddedCassandra() throws Exception {
        if (canTest()) {
            EmbeddedCassandraServerHelper.startEmbeddedCassandra("/camel-cassandra.yaml", "target/camel-cassandra", 30000);
        }
    }

    /**
     * Clean embedded Cassandra.
     */
    public static void cleanEmbeddedCassandra() throws Exception {
        if (canTest()) {
            EmbeddedCassandraServerHelper.cleanEmbeddedCassandra();
        }
    }

    public static Cluster cassandraCluster() {
        if (canTest()) {
            return Cluster.builder()
                    .addContactPoint(HOST)
                    .withClusterName("camel-cluster")
                    .build();
        } else {
            return null;
        }
    }
}