mirror of
https://github.com/yacy/yacy_search_server.git
synced 2024-09-21 00:00:13 +02:00
ce1adf9955
high-performance search query situations as seen in yacy-metager integration showed deadlock situation caused by synchronization effects inside of sun.java code. It appears that the logger is not completely safe against deadlock situations in concurrent calls of the logger. One possible solution would be a outside-synchronization with 'synchronized' statements, but that would further apply blocking on all high-efficient methods that call the logger. It is much better to do a non-blocking hand-over of logging lines and work off log entries with a concurrent log writer. This also disconnects IO operations from logging, which can also cause IO operation when a log is written to a file. This commit not only moves the logger from kelondro to yacy.logging, it also inserts the concurrency methods to realize non-blocking logging. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6078 6c8d7289-2bf4-0310-a012-ef5d649a1542
54 lines
2.1 KiB
Java
54 lines
2.1 KiB
Java
// serverSwitchAction.java
|
|
// -------------------------------------
|
|
// (C) by Michael Peter Christen; mc@yacy.net
|
|
// first published on http://www.anomic.de
|
|
// Frankfurt, Germany, 2005
|
|
// last major change: 11.05.2005
|
|
//
|
|
// This program is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation; either version 2 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
package de.anomic.server;
|
|
|
|
import de.anomic.yacy.logging.Log;
|
|
|
|
public interface serverSwitchAction {
|
|
|
|
// --------------------------------------------------------------------------
|
|
// the following methods are implemented by serverSwitchAsbtractAction
|
|
// and do not need to be altered
|
|
|
|
public void setDescription(String shortText, String longText);
|
|
// sets a visible description string
|
|
|
|
public String getShortDescription();
|
|
// returns short description string for online display
|
|
|
|
public String getLongDescription();
|
|
// returns long description string for online display
|
|
|
|
public void setLog(Log log);
|
|
// defines a log where process states can be written to
|
|
|
|
// ---------------------------------------------------------------------
|
|
// the following methods are supposed to be implemented
|
|
// by extending a serverSwitchAbstractAction object
|
|
|
|
public void doBevoreSetConfig(String key, String newvalue);
|
|
public void doAfterSetConfig(String key, String newvalue, String oldvalue);
|
|
public void doWhenGetConfig(String key, String actualvalue, String defaultvalue);
|
|
|
|
public void close(); // called when an action is undeployed
|
|
}
|