CassandraWithOriginalSchemaTestGraph.java

/**
 * Copyright 2015-2016 The OpenZipkin Authors
 *
 * Licensed 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 zipkin.storage.cassandra;

import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.Session;
import org.junit.AssumptionViolatedException;
import zipkin.Component.CheckResult;
import zipkin.internal.LazyCloseable;

import static zipkin.storage.cassandra.SessionFactory.Default.buildCluster;

enum CassandraWithOriginalSchemaTestGraph {
  INSTANCE;

  final LazyCloseable<CassandraStorage> storage = new LazyCloseable<CassandraStorage>() {
    AssumptionViolatedException ex = null;

    @Override protected CassandraStorage compute() {
      if (ex != null) throw ex;
      CassandraStorage result = CassandraStorage.builder()
          .ensureSchema(false) // make sure the schema isn't implicitly upgraded
          .keyspace("test_zipkin_original").build();

      // Install the old schema
      try (Cluster cluster = buildCluster(result);
           Session session = cluster.newSession()) {
        Schema.applyCqlFile(result.keyspace, session, "/cassandra-schema-cql3-original.txt");
      } catch (RuntimeException e) {
        throw ex = new AssumptionViolatedException(e.getMessage(), e);
      }

      CheckResult check = result.check();
      if (check.ok) return result;
      throw ex = new AssumptionViolatedException(check.exception.getMessage(), check.exception);
    }
  };
}