org.forstdb.CompactionJobInfo Maven / Gradle / Ivy
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
package org.forstdb;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
public class CompactionJobInfo extends RocksObject {
public CompactionJobInfo() {
super(newCompactionJobInfo());
}
/**
* Private as called from JNI C++
*/
private CompactionJobInfo(final long nativeHandle) {
super(nativeHandle);
// We do not own the native object!
disOwnNativeHandle();
}
/**
* Get the name of the column family where the compaction happened.
*
* @return the name of the column family
*/
public byte[] columnFamilyName() {
return columnFamilyName(nativeHandle_);
}
/**
* Get the status indicating whether the compaction was successful or not.
*
* @return the status
*/
public Status status() {
return status(nativeHandle_);
}
/**
* Get the id of the thread that completed this compaction job.
*
* @return the id of the thread
*/
public long threadId() {
return threadId(nativeHandle_);
}
/**
* Get the job id, which is unique in the same thread.
*
* @return the id of the thread
*/
public int jobId() {
return jobId(nativeHandle_);
}
/**
* Get the smallest input level of the compaction.
*
* @return the input level
*/
public int baseInputLevel() {
return baseInputLevel(nativeHandle_);
}
/**
* Get the output level of the compaction.
*
* @return the output level
*/
public int outputLevel() {
return outputLevel(nativeHandle_);
}
/**
* Get the names of the compaction input files.
*
* @return the names of the input files.
*/
public List inputFiles() {
return Arrays.asList(inputFiles(nativeHandle_));
}
/**
* Get the names of the compaction output files.
*
* @return the names of the output files.
*/
public List outputFiles() {
return Arrays.asList(outputFiles(nativeHandle_));
}
/**
* Get the table properties for the input and output tables.
*
* The map is keyed by values from {@link #inputFiles()} and
* {@link #outputFiles()}.
*
* @return the table properties
*/
public Map tableProperties() {
return tableProperties(nativeHandle_);
}
/**
* Get the Reason for running the compaction.
*
* @return the reason.
*/
public CompactionReason compactionReason() {
return CompactionReason.fromValue(compactionReason(nativeHandle_));
}
//
/**
* Get the compression algorithm used for output files.
*
* @return the compression algorithm
*/
public CompressionType compression() {
return CompressionType.getCompressionType(compression(nativeHandle_));
}
/**
* Get detailed information about this compaction.
*
* @return the detailed information, or null if not available.
*/
public /* @Nullable */ CompactionJobStats stats() {
final long statsHandle = stats(nativeHandle_);
if (statsHandle == 0) {
return null;
}
return new CompactionJobStats(statsHandle);
}
private static native long newCompactionJobInfo();
@Override protected native void disposeInternal(final long handle);
private static native byte[] columnFamilyName(final long handle);
private static native Status status(final long handle);
private static native long threadId(final long handle);
private static native int jobId(final long handle);
private static native int baseInputLevel(final long handle);
private static native int outputLevel(final long handle);
private static native String[] inputFiles(final long handle);
private static native String[] outputFiles(final long handle);
private static native Map tableProperties(
final long handle);
private static native byte compactionReason(final long handle);
private static native byte compression(final long handle);
private static native long stats(final long handle);
}