scouter.server.db.text.TextPermIndex.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.text;
import java.io.IOException
import java.util.Hashtable
import scouter.server.db.io.IndexKeyFile
import scouter.io.DataInputX
import scouter.io.DataOutputX
import scouter.util.FileUtil
import scouter.util.IClose
import scouter.util.IntKeyLinkedMap
import scouter.util.StringKeyLinkedMap
object TextPermIndex {
val table = new StringKeyLinkedMap[TextPermIndex]();
def get(div: String): TextPermIndex = {
table.synchronized {
var index = table.get(div);
if (index != null) {
index.refrence += 1;
return index;
} else return null;
}
}
def open(div: String, file: String): TextPermIndex = {
table.synchronized {
var index = table.get(div);
if (index != null) {
index.refrence += 1;
return index;
} else {
index = new TextPermIndex(div, file);
table.put(div, index);
return index;
}
}
}
def closeAll() {
while (table.size() > 0) {
table.removeFirst().close();
}
}
}
class TextPermIndex(div: String, file: String) extends IClose {
var refrence = 0;
var index: IndexKeyFile = null
def set(key: Int, dataPos: Long) {
if (this.index == null) {
this.index = new IndexKeyFile(file);
}
this.index.put(DataOutputX.toBytes(key), DataOutputX.toBytes5(dataPos));
}
def get(key: Int): Long = {
if (this.index == null) {
this.index = new IndexKeyFile(file);
}
val buf = this.index.get(DataOutputX.toBytes(key));
if (buf == null) -1 else DataInputX.toLong5(buf, 0)
}
def hasKey(key: Int): Boolean = {
if (this.index == null) {
this.index = new IndexKeyFile(file);
}
return this.index.hasKey(DataOutputX.toBytes(key));
}
def read(handler: (Array[Byte], Array[Byte]) => Any, reader: (Long) => Array[Byte]) {
if (this.index == null) {
this.index = new IndexKeyFile(file);
}
this.index.read(handler, reader);
}
override def close() {
TextPermIndex.table.synchronized {
if (this.refrence == 0) {
TextPermIndex.table.remove(this.div);
FileUtil.close(this.index);
this.index = null;
} else {
this.refrence -= 1;
}
}
}
}