org.apache.ratis.server.storage.RaftStorageDirectory Maven / Gradle / Ivy
/*
* 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.ratis.server.storage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
/** The directory of a {@link RaftStorage}. */
public interface RaftStorageDirectory {
Logger LOG = LoggerFactory.getLogger(RaftStorageDirectory.class);
String CURRENT_DIR_NAME = "current";
String STATE_MACHINE_DIR_NAME = "sm"; // directory containing state machine snapshots
String TMP_DIR_NAME = "tmp";
/** @return the root directory of this storage */
File getRoot();
/** @return the current directory. */
default File getCurrentDir() {
return new File(getRoot(), CURRENT_DIR_NAME);
}
/** @return the state machine directory. */
default File getStateMachineDir() {
return new File(getRoot(), STATE_MACHINE_DIR_NAME);
}
/** @return the temporary directory. */
default File getTmpDir() {
return new File(getRoot(), TMP_DIR_NAME);
}
/** Is this storage healthy? */
boolean isHealthy();
}