scouter.server.db.counter.RealtimeCounterIndex.scala Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* 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 scouter.server.db.counter;
import java.util.Hashtable
import scouter.lang.value.MapValue
import scouter.util.FileUtil
import scouter.util.IClose
import scouter.util.IntKeyMap
object RealtimeCounterIndex {
val table = new Hashtable[String, RealtimeCounterIndex]();
def open(file: String): RealtimeCounterIndex = {
table.synchronized {
var index = table.get(file);
if (index != null) {
index.refrence += 1;
return index;
} else {
index = new RealtimeCounterIndex(file);
table.put(file, index);
return index;
}
}
}
}
class RealtimeCounterIndex(_file: String) extends IClose {
var refrence = 0
var index: RealtimeCounterKeyFile = null
val file = _file
def write(objHash: Int, time: Long, pos: Long) {
if (this.index == null) {
this.index = new RealtimeCounterKeyFile(file);
}
this.index.write(objHash, time, pos);
}
def read(objHash: Int, stime: Long, etime: Long, handler: (Long, MapValue) => Any, dataMap: IntKeyMap[String],
reader: (Long)=>Array[Byte]) {
if (this.index == null) {
this.index = new RealtimeCounterKeyFile(file);
}
this.index.read(objHash, stime, etime, handler, dataMap, reader);
}
def readFromEnd(objHash: Int, stime: Long, etime: Long, handler: (Long, MapValue) => Any, dataMap: IntKeyMap[String],
reader: (Long)=>Array[Byte]) {
if (this.index == null) {
this.index = new RealtimeCounterKeyFile(file);
}
this.index.readFromEnd(objHash, stime, etime, handler, dataMap, reader);
}
def getStartEndDataPos(stime: Long, etime: Long): (Array[Byte], Array[Byte]) = {
if (this.index == null) {
this.index = new RealtimeCounterKeyFile(file);
}
this.index.getStartEndDataPos(stime, etime);
}
override def close() {
RealtimeCounterIndex.table.synchronized {
if (this.refrence == 0) {
RealtimeCounterIndex.table.remove(this.file);
FileUtil.close(this.index);
this.index = null;
} else {
this.refrence -= 1;
}
}
}
}