org.janusgraph.diskstorage.log.KCVSLogTest Maven / Gradle / Ivy
// Copyright 2017 JanusGraph 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 org.janusgraph.diskstorage.log;
import java.time.Duration;
import org.janusgraph.diskstorage.BackendException;
import org.janusgraph.diskstorage.configuration.ModifiableConfiguration;
import org.janusgraph.diskstorage.keycolumnvalue.KeyColumnValueStoreManager;
import org.janusgraph.diskstorage.keycolumnvalue.StoreManager;
import org.janusgraph.diskstorage.log.kcvs.KCVSLogManager;
import org.janusgraph.graphdb.configuration.GraphDatabaseConfiguration;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.TestInfo;
/**
* Implementation of the {@link LogTest} for {@link KCVSLogManager} based log implementations.
* This test only requires getting instances of {@link KeyColumnValueStoreManager}.
*
* @author Matthias Broecheler ([email protected])
*/
public abstract class KCVSLogTest extends LogTest {
public abstract KeyColumnValueStoreManager openStorageManager() throws BackendException;
public static final String LOG_NAME = "testlog";
private KeyColumnValueStoreManager storeManager;
@Override
public LogManager openLogManager(String senderId, boolean requiresOrderPreserving) throws BackendException {
storeManager = openStorageManager();
ModifiableConfiguration config = GraphDatabaseConfiguration.buildGraphConfiguration();
config.set(GraphDatabaseConfiguration.UNIQUE_INSTANCE_ID,senderId);
config.set(GraphDatabaseConfiguration.LOG_READ_INTERVAL, Duration.ofMillis(500L), LOG_NAME);
//To ensure that the write order is preserved in reading, we need to ensure that all writes go to the same partition
//otherwise readers will independently read from the partitions out-of-order by design to avoid having to synchronize
config.set(KCVSLogManager.LOG_FIXED_PARTITION, requiresOrderPreserving, LOG_NAME);
return new KCVSLogManager(storeManager,config.restrictTo(LOG_NAME));
}
@Override
@BeforeEach
public void setup(TestInfo testInfo) throws Exception {
StoreManager m = openStorageManager();
m.clearStorage();
m.close();
super.setup(testInfo);
}
@Override
@AfterEach
public void shutdown(TestInfo testInfo) throws Exception {
super.shutdown(testInfo);
storeManager.close();
}
}