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From "Nguyen, Thod" <TNgu...@corp.untd.com>
Subject RE: Remote Auxiliary Cache
Date Tue, 12 Jul 2005 16:54:27 GMT
I'm NOT able to access to the downloads site this morning. What happened ? DOS attack?

Thanks
T.N.

-----Original Message-----
From: Thomas Rasmussen [mailto:rasmussen@2e-systems.com]
Sent: Tuesday, July 12, 2005 8:41 AM
To: JCS Users List
Subject: RE: Remote Auxiliary Cache


Thanks for this important information. 
It worked well now !

Tom


On Tue, 2005-07-12 at 08:58 -0500, Smuts, Aaron wrote:
> Yes.  The remote server is horribly documented.  I'll try to improve it
> soon.  Here's a start:
> 
> 
> Basically, you need a remote.cache.ccf file and a policy file.  You need
> a policy file to run an rmi server.
> 
> The startup script below is in the src/scripts directory.  
> 
> The first argument should be the name of the config file, the second is
> the port to start the registry on.  If you don't supply a second
> argument, it will not start the registry; instead, it will assume that
> you started it elsewhere.
> 
> It also assumes that you have a policy file, called cache.policy in
> directory called conf.  You might need to change that.  
> 
> This could be your cache.policy file:
> 
> grant {
>     permission java.security.AllPermission;
> };
> 
> 
> The first argument should be the name of the config file.
> 
> If you want to start the registry on 1101, and your remote.cache.ccf
> file is in base of the classpath, type:
> 
> > startRemoteCache.sh ./remote.cache.ccf 1101
> 
> 
> The remote.cache.ccf file is just a cache.ccf file with these extras:
> 
> # Registry used to register and provide the IRmiCacheService service.
> registry.host=localhost
> registry.port=1101
> # call back port to local caches.
> remote.cache.service.port=1101
> # cluster setting
> remote.cluster.LocalClusterConsistency=true
> 
> 
> You will need to change the host to the name of the machine you are
> accessing, unless you will only be accessing it locally.
> 
> The registry port is the port the registry is started on.  If you plan
> to start the registry using the script, then you need to use the same
> port you specified in the script.  Here, I specified 1101, as I did
> above.
> 
> The service port is the callback port.  Just leave it the same as the
> registry port.
> 
> The cluster consistency setting, just says that puts and removes should
> be sent to any other cluster type remotes that are configured.
> 
> 
> Here's the startRemoteCache.sh script:
> ------------------------------------------------
> 
> #! /bin/sh
> 
> export CLASSPATH=.
> export CLASSPATH=${CLASSPATH}:`dirname
> $0`/../conf:/usr/java/jcs/conf:/usr/java/jcs/conf/
> 
> THISDIR=`dirname $0`
> 
> for i in `find ${THISDIR}/../lib -name "*.jar" `
> do
>         export CLASSPATH=${CLASSPATH}:$i
> done
> echo "Classpath = ${CLASSPATH}"
> 
> #START THE REGISTRY
> if [ "$2" != "" ]; then
>   echo "Starting the registry on port $2"
>   rmiregistry $2 &
> else
>   echo "Not starting registry, since no port was supplied."
> fi
> 
> POLICY="-Djava.security.policy=`dirname $0`/../conf/cache.policy"
> 
> HEAP="-Xms128m -Xmx512m"
> 
> DEBUG="-verbose:gc -XX:+PrintTenuringDistribution"
> 
> ARGS="$HEAP $DEBUG $POLICY"
> 
> echo $ARGS
> 
> java  $ARGS
> org.apache.jcs.auxiliary.remote.server.RemoteCacheServerFactory "$1"
> 
> -----------------------------------------------------------------
> 
> 
> 
> 
> > -----Original Message-----
> > From: Thomas Rasmussen [mailto:rasmussen@2e-systems.com]
> > Sent: Tuesday, July 12, 2005 4:53 AM
> > To: JCS Users List
> > Subject: RE: Remote Auxiliary Cache
> > 
> > Ok, I've downloaded the sample script and customized
> > it so that it uses the correct file structure and the
> > correct amount of memory available to me.
> > 
> > I start this script from the command line like this
> > (having changed the port also in cache.ccf and remote.cache.ccf):
> > 
> > 
> > %> ./startRemoteCache.sh localhost 1100
> > 
> > 
> > thus providing the hostname as argument $1 and port as $2.
> > 
> > Is this correct ?
> > 
> > 
> > When doing so I get the following:
> > Starting the registry on port 1100
> > -Xms128m -Xmx256m -verbose:gc -XX:+PrintTenuringDistribution -
> > Djava.security.policy=./../config/security.policy
> > log4j:WARN No appenders could be found for logger
> > (org.apache.jcs.auxiliary.remote.RemoteUtils).
> > log4j:WARN Please initialize the log4j system properly.
> > [Full GC 2466K->316K(130112K), 0.0306250 secs]
> > Exception in thread "main" java.lang.NullPointerException
> >         at
> java.util.Properties$LineReader.readLine(Properties.java:365)
> >         at java.util.Properties.load(Properties.java:293)
> >         at
> org.apache.jcs.engine.control.CompositeCacheManager.configure
> > (CompositeCacheManager.java:168)
> >         at
> >
> org.apache.jcs.auxiliary.remote.server.RemoteCacheServer.createCacheMana
> ge
> > r(RemoteCacheServer.java:157)
> >         at
> org.apache.jcs.auxiliary.remote.server.RemoteCacheServer.init
> > (RemoteCacheServer.java:127)
> >         at
> >
> org.apache.jcs.auxiliary.remote.server.RemoteCacheServer.<init>(RemoteCa
> ch
> > eServer.java:109)
> >         at
> >
> org.apache.jcs.auxiliary.remote.server.RemoteCacheServerFactory.startup
> > (RemoteCacheServerFactory.java:115)
> >         at
> > org.apache.jcs.auxiliary.remote.server.RemoteCacheServerFactory.main
> > (RemoteCacheServerFactory.java:287)
> > 
> > 
> > My cache.ccf and remote.cache.ccf files resides in a
> > directory included in the classpath variable.
> > 
> > Where does the NullPointerException come from ?
> > 
> > 
> > Being  a less experienced Developer there could be
> > some general things about the remote variant of the JCS
> > system, that some of you might want to straighten out
> > to me. I've read the document on JSC from the apache site
> > maybe 3 times but some (many) things still remain
> > unclear to me. Any advice and/or recommendation will
> > be appreciated.
> > 
> > Thanks for your time and efforts
> > 
> > Tom
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > On Mon, 2005-07-11 at 10:03 -0500, Smuts, Aaron wrote:
> > > Did you start the remote cache server?  There is a sample script in
> the
> > > src/scripts directory.
> > >
> > > > -----Original Message-----
> > > > From: Thomas Rasmussen [mailto:rasmussen@2e-systems.com]
> > > > Sent: Monday, July 11, 2005 11:00 AM
> > > > To: JCS Users List
> > > > Subject: RE: Remote Auxiliary Cache
> > > >
> > > > My remote.cache.ccf, which is included in the classpath
> > > > looks like this:
> > > >
> > > > registry.host=localhost
> > > > registry.port=1099
> > > >
> > > > remote.cache.service.port=1099
> > > > remote.cluster.LocalClusterConsistency=true
> > > >
> > > >
> > > > Did I put this file in the wrong place ?
> > > >
> > > > Tom
> > > >
> > > >
> > > > On Mon, 2005-07-11 at 08:36 -0500, Smuts, Aaron wrote:
> > > > >
> > > > > What does your remote cache config file look like?
> > > > >
> > > > > You have to startup the remote server, which uses a slightly
> > > different
> > > > > config file.  Did you do this?
> > > > >
> > > > >
> > > > > Aaron
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Thomas Rasmussen [mailto:rasmussen@2e-systems.com]
> > > > > > Sent: Monday, July 11, 2005 6:16 AM
> > > > > > To: JCS Users List
> > > > > > Subject: Remote Auxiliary Cache
> > > > > >
> > > > > > Hi,
> > > > > >
> > > > > > I have an application that is running
> > > > > > fine using a local cache.
> > > > > > I've tried to configure it to use a
> > > > > > remote auxiliary cache having add the
> > > > > > following section to my cache.ccf:
> > > > > >
> > > > > >
> > > > > > ## REMOTE RMI CACHE WITHOUT FAILOVER
> > > > > >
> > > > > >
> > > > >
> > >
> jcs.auxiliary.RCache=org.apache.jcs.auxiliary.remote.RemoteCacheFactory
> > > > > >
> > > > >
> > >
> jcs.auxiliary.RCache.attributes=org.apache.jcs.auxiliary.remote.RemoteCa
> > > > > ch
> > > > > > eAttributes
> > > > > > jcs.auxiliary.RCache.attributes.RemoteTypeName=LOCAL
> > > > > > jcs.auxiliary.RCache.attributes.RemoteHost=localhost
> > > > > > jcs.auxiliary.RCache.attributes.RemotePort=1099
> > > > > > jcs.auxiliary.RCache.attributes.GetOnly=true
> > > > > >
> > > > > >
> > > > > >
> > > > > > The rest of my cache.ccf looks like this:
> > > > > >
> > > > > >
> > > > > >
> > > > > > #### DEFAULT CACHE REGION
> > > > > >
> > > > > > jcs.default=DC,RCache
> > > > > >
> > > > >
> > >
> jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttribut
> > > > > es
> > > > > > JCS.default.cacheattributes.MaxObjects=1200
> > > > > >
> > > > >
> > >
> jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory
> > > > > .l
> > > > > > ru.LRUMemoryCache
> > > > > > jcs.default.cacheattributes.maxMemoryIdleTimeSeconds=3600
> > > > > >
> > >
> jcs.default.elementattributes=org.apache.jcs.engine.ElementAttributes
> > > > > > jcs.default.elementattributes.IsEternal=false
> > > > > > jcs.default.elementattributes.maxLifeSeconds=3600
> > > > > > jcs.default.elementattributes.IdleTime=1800
> > > > > > jcs.default.elementattributes.IsSpool=true
> > > > > > jcs.default.elementattributes.IsLateral=false
> > > > > > jcs.default.elementattributes.IsRemote=true
> > > > > >
> > > > > >
> > > > > >
> > > > > > #### PREDEFINED CACHE REGIONS
> > > > > >
> > > > > > jcs.region.testCache1=DC,RCache
> > > > > >
> > > > >
> > >
> jcs.region.testCache1.cacheattributes=org.apache.jcs.engine.CompositeCac
> > > > > he
> > > > > > Attributes
> > > > > > jcs.region.testCache1.cacheattributes.MaxObjects=1200
> > > > > >
> > > > >
> > >
> jcs.region.testCache1.cacheattributes.MemoryCacheName=org.apache.jcs.eng
> > > > > in
> > > > > > e.memory.lru.LRUMemoryCache
> > > > > >
> > > jcs.region.testCache1.cacheattributes.maxMemoryIdleTimeSeconds=7200
> > > > > >
> > > > >
> > >
> jcs.region.testCache1.elementattributes=org.apache.jcs.engine.ElementAtt
> > > > > ri
> > > > > > butes
> > > > > > jcs.region.testCache1.elementattributes.IdleTime=1800
> > > > > > jcs.region.testCache1.elementattributes.IsEternal=false
> > > > > > jcs.region.testCache1.elementattributes.IsSpool=true
> > > > > > jcs.region.testCache1.elementattributes.IsLateral=false
> > > > > > jcs.region.testCache1.elementattributes.IsRemote=true
> > > > > >
> > > > > >
> > > > > >
> > > > > > #### AVAILABLE AUXILIARY CACHES
> > > > > > # Primary disk cache
> > > > > >
> > > > > >
> > > > >
> > >
> jcs.auxiliary.DC=org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheF
> > > > > ac
> > > > > > tory
> > > > > >
> > > > >
> > >
> jcs.auxiliary.DC.attributes=org.apache.jcs.auxiliary.disk.indexed.Indexe
> > > > > dD
> > > > > > iskCacheAttributes
> > > > > > jcs.auxiliary.DC.attributes.DiskPath=/tmp/jcs/raf
> > > > > > jcs.auxiliary.DC.attributes.MaxPurgatorySize=10000
> > > > > > jcs.auxiliary.DC.attributes.MaxKeySize=10000
> > > > > > jcs.auxiliary.DC.attributes.OptimizeAtRemoveCount=300000
> > > > > > jcs.auxiliary.DC.attributes.MaxRecycleBinSize=7500
> > > > > >
> > > > > >
> > > > > > When trying to run this after having started the rmiregistry,
> > > > > > I get the following error messages:
> > > > > >
> > > > > >
> > > > > > "ERROR  - Problem finding server at
> > > > > >
> > > > >
> > >
> [//localhost:1099/org.apache.jcs.auxiliary.remote.behavior.IRemoteCacheS
> > > > > er
> > > > > > vice]"
> > > > > >
> > > > > >
> > > > > > Furthermore I get the following stack trace (upper part):
> > > > > >
> > > > > >
> > > > > > "java.rmi.NotBoundException:
> > > > > > org.apache.jcs.auxiliary.remote.behavior.IRemoteCacheService
> > > > > >         at
> > > > > > sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer
> > > > > > (StreamRemoteCall.java:247)
> > > > > >         at sun.rmi.transport.StreamRemoteCall.executeCall
> > > > > > (StreamRemoteCall.java:223)
> > > > > >         at
> sun.rmi.server.UnicastRef.invoke(UnicastRef.java:343)
> > > > > >         at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown
> > > Source)
> > > > > >         at java.rmi.Naming.lookup(Naming.java:84)"
> > > > > >
> > > > > >
> > > > > > I've tested the port 1099 after having issued the rmiregistry
> > > > > > command and it is open.
> > > > > >
> > > > > >
> > > > > > What have I misunderstood/screwed up ?
> > > > > >
> > > > > >
> > > > > > Tom
> > > > > >
> > > > > >
> > > > > >
> > >
> ---------------------------------------------------------------------
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> > > > >
> > > > >
> > >
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> > > >
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> > >
> > >
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> > 
> > 
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