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scouter.server.db.XLogRD.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;
import java.io.File
import java.util.List
import java.util.Vector
import scouter.io.DataOutputX
import scouter.server.db.xlog.XLogDataReader
import scouter.server.db.xlog.XLogIndex
import scouter.util.FileUtil
import scouter.server.db.io.IndexTimeFile
object XLogRD {
/**
* read xlog in limited count in time
*/
def readByTimeLimitCount(date: String, fromTime: Long, toTime: Long, lastBucketTime: Long, limitCount: Int, handler: (Long, Array[Byte]) => Int) {
val path = XLogWR.getDBPath(date);
if (new File(path).canRead()) {
val file = path + "/" + XLogWR.prefix;
var reader: XLogDataReader = null;
var table: IndexTimeFile = null;
try {
reader = XLogDataReader.open(date, file);
table = new IndexTimeFile(file + XLogIndex.POSTFIX_TIME);
table.readByLimitCount(fromTime, toTime, lastBucketTime, limitCount, handler, reader.read)
} catch {
case e: Exception => e.printStackTrace()
case _ :Throwable=>
} finally {
FileUtil.close(table);
FileUtil.close(reader);
}
}
}
def readByTime(date: String, fromTime: Long, toTime: Long, handler: (Long, Array[Byte]) => Any) {
val path = XLogWR.getDBPath(date);
if (new File(path).canRead()) {
val file = path + "/" + XLogWR.prefix;
var reader: XLogDataReader = null;
var table: IndexTimeFile = null;
try {
reader = XLogDataReader.open(date, file);
table = new IndexTimeFile(file + XLogIndex.POSTFIX_TIME);
table.read(fromTime, toTime, handler, reader.read)
} catch {
case e: Exception => e.printStackTrace()
case _ :Throwable=>
} finally {
FileUtil.close(table);
FileUtil.close(reader);
}
}
}
def readFromEndTime(date: String, fromTime: Long, toTime: Long, handler: (Long, Array[Byte]) => Any) {
val path = XLogWR.getDBPath(date);
if (new File(path).canRead()) {
val file = path + "/" + XLogWR.prefix;
var reader: XLogDataReader = null;
var table: IndexTimeFile = null;
try {
reader = XLogDataReader.open(date, file);
table = new IndexTimeFile(file + XLogIndex.POSTFIX_TIME);
table.readFromEnd(fromTime, toTime, handler, reader.read)
} catch {
case e: Throwable => //e.printStackTrace();
} finally {
FileUtil.close(table);
FileUtil.close(reader);
}
}
}
def getByTxid(date: String, txid: Long): Array[Byte] = {
val path = XLogWR.getDBPath(date);
if (new File(path).canRead() == false) {
return null;
}
val file = path + "/" + XLogWR.prefix;
var fpos = 0L
var idx: XLogIndex = null;
try {
idx = XLogIndex.open(file);
fpos = idx.getByTxid(txid);
} catch {
case e: Exception => return null;
} finally {
FileUtil.close(idx);
}
if (fpos < 0)
return null;
var reader: XLogDataReader = null;
try {
reader = XLogDataReader.open(date, file);
return reader.read(fpos);
} catch {
case e: Exception => return null;
} finally {
FileUtil.close(reader);
}
}
def readByGxid(date: String, gxid: Long, handler: (Array[Byte], Array[Byte]) => Any) {
val path = XLogWR.getDBPath(date);
if (new File(path).canRead() == false) {
return ;
}
val file = path + "/" + XLogWR.prefix;
var result: java.util.List[Long] = null;
var idx: XLogIndex = null;
try {
idx = XLogIndex.open(file);
result = idx.getByGxid(gxid);
} catch {
case e: Exception => e.printStackTrace();
} finally {
FileUtil.close(idx);
}
if (result == null || result.size() == 0)
return ;
val gidb = DataOutputX.toBytes(gxid);
var reader: XLogDataReader = null;
try {
reader = XLogDataReader.open(date, file);
for (i <- 0 to result.size() - 1) {
handler(gidb, reader.read(result.get(i)));
}
} catch {
case e: Throwable => e.printStackTrace();
} finally {
FileUtil.close(reader);
}
}
def readByTxid(date: String, handler: (Array[Byte], Array[Byte]) => Any) {
val path = XLogWR.getDBPath(date);
if (new File(path).canRead() == false) {
return ;
}
val file = path + "/" + XLogWR.prefix;
var idx: XLogIndex = null;
var reader: XLogDataReader = null;
try {
idx = XLogIndex.open(file);
reader = XLogDataReader.open(date, file);
idx.readByTxid(handler, reader.read);
} catch {
case e: Exception => e.printStackTrace();
} finally {
FileUtil.close(idx);
FileUtil.close(reader);
}
}
def readByGxid(date: String, handler: (Array[Byte], Array[Byte]) => Any) {
val path = XLogWR.getDBPath(date);
if (new File(path).canRead() == false) {
return ;
}
val file = path + "/" + XLogWR.prefix;
var idx: XLogIndex = null;
var reader: XLogDataReader = null;
try {
idx = XLogIndex.open(file);
reader = XLogDataReader.open(date, file);
idx.readByGxid(handler, reader.read);
} catch {
case e: Exception => e.printStackTrace();
} finally {
FileUtil.close(idx);
FileUtil.close(reader);
}
}
def getByGxid(date: String, guid: Long): Vector[Array[Byte]] = {
var vector = new Vector[Array[Byte]]()
val path = XLogWR.getDBPath(date);
if (new File(path).canRead() == false) {
return null;
}
val file = path + "/" + XLogWR.prefix;
var result: java.util.List[Long] = null;
var idx: XLogIndex = null;
try {
idx = XLogIndex.open(file);
result = idx.getByGxid(guid);
if (result.size() == 0)
return null;
} catch {
case e: Exception => return null;
} finally {
FileUtil.close(idx);
}
var reader: XLogDataReader = null;
try {
reader = XLogDataReader.open(date, file);
for (i <- 0 to result.size() - 1) {
val buff = reader.read(result.get(i).longValue());
if (buff != null) {
vector.add(buff);
}
}
} catch {
case e: Exception => e.printStackTrace();
} finally {
FileUtil.close(reader);
}
return vector;
}
}
