org.rocksdb.ThreadStatus Maven / Gradle / Ivy
// 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.rocksdb;
import java.util.Map;
public class ThreadStatus {
private final long threadId;
private final ThreadType threadType;
private final String dbName;
private final String cfName;
private final OperationType operationType;
private final long operationElapsedTime; // microseconds
private final OperationStage operationStage;
private final long[] operationProperties;
private final StateType stateType;
/**
* Invoked from C++ via JNI
*/
private ThreadStatus(final long threadId,
final byte threadTypeValue,
final String dbName,
final String cfName,
final byte operationTypeValue,
final long operationElapsedTime,
final byte operationStageValue,
final long[] operationProperties,
final byte stateTypeValue) {
this.threadId = threadId;
this.threadType = ThreadType.fromValue(threadTypeValue);
this.dbName = dbName;
this.cfName = cfName;
this.operationType = OperationType.fromValue(operationTypeValue);
this.operationElapsedTime = operationElapsedTime;
this.operationStage = OperationStage.fromValue(operationStageValue);
this.operationProperties = operationProperties;
this.stateType = StateType.fromValue(stateTypeValue);
}
/**
* Get the unique ID of the thread.
*
* @return the thread id
*/
public long getThreadId() {
return threadId;
}
/**
* Get the type of the thread.
*
* @return the type of the thread.
*/
public ThreadType getThreadType() {
return threadType;
}
/**
* The name of the DB instance that the thread is currently
* involved with.
*
* @return the name of the db, or null if the thread is not involved
* in any DB operation.
*/
/* @Nullable */ public String getDbName() {
return dbName;
}
/**
* The name of the Column Family that the thread is currently
* involved with.
*
* @return the name of the db, or null if the thread is not involved
* in any column Family operation.
*/
/* @Nullable */ public String getCfName() {
return cfName;
}
/**
* Get the operation (high-level action) that the current thread is involved
* with.
*
* @return the operation
*/
public OperationType getOperationType() {
return operationType;
}
/**
* Get the elapsed time of the current thread operation in microseconds.
*
* @return the elapsed time
*/
public long getOperationElapsedTime() {
return operationElapsedTime;
}
/**
* Get the current stage where the thread is involved in the current
* operation.
*
* @return the current stage of the current operation
*/
public OperationStage getOperationStage() {
return operationStage;
}
/**
* Get the list of properties that describe some details about the current
* operation.
*
* Each field in might have different meanings for different operations.
*
* @return the properties
*/
@SuppressWarnings("PMD.MethodReturnsInternalArray")
public long[] getOperationProperties() {
return operationProperties;
}
/**
* Get the state (lower-level action) that the current thread is involved
* with.
*
* @return the state
*/
public StateType getStateType() {
return stateType;
}
/**
* Get the name of the thread type.
*
* @param threadType the thread type
*
* @return the name of the thread type.
*/
public static String getThreadTypeName(final ThreadType threadType) {
return getThreadTypeName(threadType.getValue());
}
/**
* Get the name of an operation given its type.
*
* @param operationType the type of operation.
*
* @return the name of the operation.
*/
public static String getOperationName(final OperationType operationType) {
return getOperationName(operationType.getValue());
}
public static String microsToString(final long operationElapsedTime) {
return microsToStringNative(operationElapsedTime);
}
/**
* Obtain a human-readable string describing the specified operation stage.
*
* @param operationStage the stage of the operation.
*
* @return the description of the operation stage.
*/
public static String getOperationStageName(
final OperationStage operationStage) {
return getOperationStageName(operationStage.getValue());
}
/**
* Obtain the name of the "i"th operation property of the
* specified operation.
*
* @param operationType the operation type.
* @param i the index of the operation property.
*
* @return the name of the operation property
*/
public static String getOperationPropertyName(
final OperationType operationType, final int i) {
return getOperationPropertyName(operationType.getValue(), i);
}
/**
* Translate the "i"th property of the specified operation given
* a property value.
*
* @param operationType the operation type.
* @param operationProperties the operation properties.
*
* @return the property values.
*/
public static Map interpretOperationProperties(
final OperationType operationType, final long[] operationProperties) {
return interpretOperationProperties(operationType.getValue(),
operationProperties);
}
/**
* Obtain the name of a state given its type.
*
* @param stateType the state type.
*
* @return the name of the state.
*/
public static String getStateName(final StateType stateType) {
return getStateName(stateType.getValue());
}
private static native String getThreadTypeName(final byte threadTypeValue);
private static native String getOperationName(final byte operationTypeValue);
private static native String microsToStringNative(
final long operationElapsedTime);
private static native String getOperationStageName(
final byte operationStageTypeValue);
private static native String getOperationPropertyName(
final byte operationTypeValue, final int i);
private static native MapinterpretOperationProperties(
final byte operationTypeValue, final long[] operationProperties);
private static native String getStateName(final byte stateTypeValue);
}