| /* |
| * 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.cassandra.db.commitlog; |
| |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| |
| public interface CommitLogMBean |
| { |
| /** |
| * Command to execute to archive a commitlog segment. Blank to disabled. |
| */ |
| public String getArchiveCommand(); |
| |
| /** |
| * Command to execute to make an archived commitlog live again |
| */ |
| public String getRestoreCommand(); |
| |
| /** |
| * Directory to scan the recovery files in |
| */ |
| public String getRestoreDirectories(); |
| |
| /** |
| * Restore mutations created up to and including this timestamp in GMT |
| * Format: yyyy:MM:dd HH:mm:ss (2012:04:31 20:43:12) |
| * |
| * Recovery will continue through the segment when the first client-supplied |
| * timestamp greater than this time is encountered, but only mutations less than |
| * or equal to this timestamp will be applied. |
| */ |
| public long getRestorePointInTime(); |
| |
| /** |
| * get precision of the timestamp used in the restore (MILLISECONDS, MICROSECONDS, ...) |
| * to determine if passed the restore point in time. |
| */ |
| public String getRestorePrecision(); |
| |
| /** |
| * Recover a single file. |
| */ |
| public void recover(String path) throws IOException; |
| |
| /** |
| * @return file names (not full paths) of active commit log segments (segments containing unflushed data) |
| */ |
| public List<String> getActiveSegmentNames(); |
| |
| /** |
| * @return Files which are pending for archival attempt. Does NOT include failed archive attempts. |
| */ |
| public List<String> getArchivingSegmentNames(); |
| |
| /** |
| * @return The size of the mutations in all active commit log segments (uncompressed). |
| */ |
| public long getActiveContentSize(); |
| |
| /** |
| * @return The space taken on disk by the commit log (compressed). |
| */ |
| public long getActiveOnDiskSize(); |
| |
| /** |
| * @return A map between active log segments and the compression ratio achieved for each. |
| */ |
| public Map<String, Double> getActiveSegmentCompressionRatios(); |
| |
| public boolean getCDCBlockWrites(); |
| |
| public void setCDCBlockWrites(boolean val); |
| } |