I want to allow the cache to be programmatically configured. Right now, if a cache isn't configured in the cache.ccf, it will take the defaults. It would be nice if under certain conditions a program that wanted to add an auxiliary to a region could do so.
The easiest and cleanest way to do this would be to allow programs to get a list of auxiliaries that were in the props file and add or remove these from the particular cache region. Anything more would be tricky. I also wouldn't want people to be hardcoding configuration in their programs. This is what jcache proposes. It is easier for them since they have a fixed set of auxiliaries (disk and lateral), but JCS has an array of possibilities and they may not play well together. You wouldn't want two disk caches and you might have trouble running a remote and a lateral for the same region. This shouldn't cause any looping, but the behavior could be different. The remote coud be configured to remove upon put and the later to put on put. This might get funny and would be wasteful. One thing that might be nice would be auxiliary failover switching. It would be cool to say use this auxiliary and if it goes into an error mode, start using this one. An xml config could handle this. The current configuration could do this in the list of auxiliaries. DC(JISP),RC(LC) -- use the indexed disk cache and iff it fails use the JISP. Use the remote cache and if it fails us the lateral cache . . . This wouldn't be so hard. Zombie mode you can detect this and switch. This might involve an internal wrapper over the auxiliaries that are added to the cache. (Maybe this should be in the notes file?) Aaron > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > Sent: Saturday, February 16, 2002 5:00 PM > To: [EMAIL PROTECTED] > Subject: cvs commit: jakarta-turbine-stratum/src/test-conf > TestDiskCache.ccf > > jtaylor 02/02/16 13:59:33 > > Modified: src/java/org/apache/stratum/jcs JCS.java > src/java/org/apache/stratum/jcs/engine/control > CompositeCacheManager.java > Added: src/test/org/apache/stratum/jcs TestDiskCache.java > src/test-conf TestDiskCache.ccf > Log: > Added a unit test which causes objects to be pushed to the disk cache. > This > required the addition of a means to set the cache configuration file. > This > should be pushed up to the CacheAccess class (or some other means to > change > the config file provided). > > Revision Changes Path > 1.6 +21 -2 jakarta-turbine- > stratum/src/java/org/apache/stratum/jcs/JCS.java > > Index: JCS.java > =================================================================== > RCS file: /home/cvs/jakarta-turbine- > stratum/src/java/org/apache/stratum/jcs/JCS.java,v > retrieving revision 1.5 > retrieving revision 1.6 > diff -u -r1.5 -r1.6 > --- JCS.java 16 Feb 2002 02:37:16 -0000 1.5 > +++ JCS.java 16 Feb 2002 21:59:33 -0000 1.6 > @@ -75,10 +75,12 @@ > * @author <a href="mailto:[EMAIL PROTECTED]";>Aaron Smuts</a> > * @author <a href="mailto:[EMAIL PROTECTED]";>James Taylor</a> > * @created February 13, 2002 > - * @version $Id: JCS.java,v 1.5 2002/02/16 02:37:16 jtaylor Exp $ > + * @version $Id: JCS.java,v 1.6 2002/02/16 21:59:33 jtaylor Exp $ > */ > public class JCS extends GroupCacheAccess > { > + private static String configFilename = null; > + > private static GroupCacheManager cacheMgr; > > /** > @@ -137,9 +139,26 @@ > { > if ( cacheMgr == null ) > { > - cacheMgr = GroupCacheManagerFactory.getInstance(); > + if ( configFilename == null ) > + { > + cacheMgr = > GroupCacheManagerFactory.getInstance(); > + } > + else > + { > + cacheMgr = GroupCacheManagerFactory > + .getInstance( configFilename ); > + } > } > } > } > + } > + > + /** > + * Set the filename that the cache manager will be initialized > with. Only > + * matters before the instance is initialized. > + */ > + public static void setConfigFilename( String configFilename ) > + { > + JCS.configFilename = configFilename; > } > } > > > > 1.7 +1 -1 jakarta-turbine- > stratum/src/java/org/apache/stratum/jcs/engine/control/CompositeCacheMan ag > er.java > > Index: CompositeCacheManager.java > =================================================================== > RCS file: /home/cvs/jakarta-turbine- > stratum/src/java/org/apache/stratum/jcs/engine/control/CompositeCacheMan ag > er.java,v > retrieving revision 1.6 > retrieving revision 1.7 > diff -u -r1.6 -r1.7 > --- CompositeCacheManager.java 16 Feb 2002 17:58:12 -0000 1.6 > +++ CompositeCacheManager.java 16 Feb 2002 21:59:33 -0000 1.7 > @@ -104,7 +104,7 @@ > { > is.close(); > } > - catch ( IOException ignore ) > + catch ( Exception ignore ) > { > // Ignored > } > > > > 1.1 jakarta-turbine- > stratum/src/test/org/apache/stratum/jcs/TestDiskCache.java > > Index: TestDiskCache.java > =================================================================== > package org.apache.stratum.jcs; > > /* > * ==================================================================== > * The Apache Software License, Version 1.1 > * > * Copyright (c) 2001-2002 The Apache Software Foundation. All rights > * reserved. > * > * Redistribution and use in source and binary forms, with or without > * modification, are permitted provided that the following conditions > * are met: > * > * 1. Redistributions of source code must retain the above copyright > * notice, this list of conditions and the following disclaimer. > * > * 2. Redistributions in binary form must reproduce the above copyright > * notice, this list of conditions and the following disclaimer in > * the documentation and/or other materials provided with the > * distribution. > * > * 3. The end-user documentation included with the redistribution, > * if any, must include the following acknowledgment: > * "This product includes software developed by the > * Apache Software Foundation (http://www.apache.org/)." > * Alternately, this acknowledgment may appear in the software itself, > * if and wherever such third-party acknowledgments normally appear. > * > * 4. The names "Apache" and "Apache Software Foundation" and > * "Apache Turbine" must not be used to endorse or promote products > * derived from this software without prior written permission. For > * written permission, please contact [EMAIL PROTECTED] > * > * 5. Products derived from this software may not be called "Apache", > * "Apache Turbine", nor may "Apache" appear in their name, without > * prior written permission of the Apache Software Foundation. > * > * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED > * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES > * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE > * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR > * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, > * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT > * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF > * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND > * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, > * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT > * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF > * SUCH DAMAGE. > * ==================================================================== > * > * This software consists of voluntary contributions made by many > * individuals on behalf of the Apache Software Foundation. For more > * information on the Apache Software Foundation, please see > * <http://www.apache.org/>. > */ > > import junit.framework.Test; > import junit.framework.TestCase; > import junit.framework.TestSuite; > > import org.apache.stratum.jcs.JCS; > import org.apache.stratum.jcs.engine.behavior.ICompositeCacheAttributes; > > /** > * Test which excercises the disk cache. > * > * @author <a href="mailto:[EMAIL PROTECTED]";>Aaron Smuts</a> > */ > public class TestDiskCache extends TestCase > { > /** > * Number of items to cache, twice the configured maxObjects for the > * memory cache > */ > private static int items = 200; > > /** > * Constructor for the TestSimpleLoad object > */ > public TestDiskCache( String testName ) > { > super( testName ); > } > > /** > * Main method passes this test to the text test runner. > */ > public static void main( String args[] ) > { > String[] testCaseName = {TestDiskCache.class.getName()}; > junit.textui.TestRunner.main( testCaseName ); > } > > /** > * A unit test suite for JUnit > * > * @return The test suite > */ > public static Test suite() > { > return new TestSuite( TestDiskCache.class ); > } > > /** > * Adds items to cache, gets them, and removes them. The item count > is more > * than > * > * @exception Exception Description of the Exception > */ > public void testDiskCache() > throws Exception > { > JCS.setConfigFilename( "/TestDiskCache.ccf" ); > > JCS jcs = JCS.getInstance( "testCache" ); > > // Add items to cache > > for ( int i = 0; i <= items; i++ ) > { > jcs.put( i + ":key", "data" + i ); > } > > // Test that all items are in cache > > for ( int i = 0; i <= items; i++ ) > { > String value = ( String ) jcs.get( i + ":key" ); > > this.assertEquals( "data" + i, value ); > } > > // Remove all the items > > for ( int i = 0; i <= items; i++ ) > { > jcs.destroy( i + ":key" ); > } > > // Verify removal > > for ( int i = 0; i <= items; i++ ) > { > assertNull( jcs.get( i + ":key" ) ); > } > } > } > > > > 1.1 jakarta-turbine-stratum/src/test- > conf/TestDiskCache.ccf > > Index: TestDiskCache.ccf > =================================================================== > # Cache configuration for the 'TestDiskCache' test. The memory cache has > a > # a maximum of 100 objects, so objects should get pushed into the disk > cache > > jcs.default=DC > > jcs.default.cacheattributes=org.apache.stratum.jcs.engine.CompositeCache At > tributes > jcs.default.cacheattributes.MaxObjects=1000 > > jcs.default.cacheattributes.MemoryCacheName=org.apache.stratum.jcs.engin e. > memory.lru.LRUMemoryCache > > # SYSTEM GROUP ID CACHE > jcs.system.groupIdCache=DC > > jcs.system.groupIdCache.cacheattributes=org.apache.stratum.jcs.engine.Co mp > ositeCacheAttributes > jcs.system.groupIdCache.cacheattributes.MaxObjects=10000 > > jcs.system.groupIdCache.cacheattributes.MemoryCacheName=org.apache.strat um > .jcs.engine.memory.lru.LRUMemoryCache > > > # CACHE REGIONS AVAILABLE > jcs.region.testCache=DC > > jcs.region.testCache.cacheattributes=org.apache.stratum.jcs.engine.Compo si > teCacheAttributes > jcs.region.testCache.cacheattributes.MaxObjects=100 > > jcs.region.testCache.cacheattributes.MemoryCacheName=org.apache.stratum. jc > s.engine.memory.lru.LRUMemoryCache > > # AUXILIARY CACHES AVAILABLE > > # Primary Disk Cache-- faster than the rest because of memory key > storage > jcs.auxiliary.DC=org.apache.stratum.jcs.auxiliary.disk.DiskCacheFactory > > jcs.auxiliary.DC.attributes=org.apache.stratum.jcs.auxiliary.disk.DiskCa ch > eAttributes > jcs.auxiliary.DC.attributes.DiskPath=bin/test/disk-cache > > > > > -- > To unsubscribe, e-mail: <mailto:turbine-dev- > [EMAIL PROTECTED]> > For additional commands, e-mail: <mailto:turbine-dev- > [EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
