Ok, I've figured out the problem with loading the config file. JCS is
using getResourcesAsStream() and so I needed to
a) set cfg as follows 'String cfg = "/dsm-jcs.ccf";'
b) put the file in the Eclipse src directory. This shouldn't be necessary
since the program was running in the project directory and the classpath
included that project directory. But, this is probably not a JCS issue.
David Wood
Computing Systems for Wireless Networks
IBM TJ Watson Research Center
daw...@us.ibm.com
914-784-5123 (office), 914-396-6515 (mobile)
From: David Wood/Watson/IBM@IBMUS
To: "JCS Users List" <jcs-users@jakarta.apache.org>
Date: 06/09/2011 09:38 AM
Subject: Re: configuration file loading problem
Oh, and I should have mentioned that I get this even if the config file is
empty, but here is the non-empty one....
jcs.default=LTCP
jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes
jcs.default.cacheattributes.MaxObjects=1000
jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.
lru.LRUMemoryCache
# Lateral TCP
jcs.auxiliary.LTCP=org.apache.jcs.auxiliary.lateral.LateralCacheFactory
jcs.auxiliary.LTCP.attributes=org.apache.jcs
.auxiliary.lateral.LateralCacheAttributes
jcs.auxiliary.LTCP.attributes.TransmissionTypeName=TCP
jcs.auxiliary.LTCP.attributes.TcpServers=localhost:1111
jcs.auxiliary.LTCP.attributes.TcpListenerPort=1110
jcs.auxiliary.LTCP.attributes.PutOnlyMode=false
# UDP discovery for
jcs.auxiliary.LTCP=org.apache.jcs.auxiliary.lateral.socket.tcp
.LateralTCPCacheFactory
jcs.auxiliary.LTCP.attributes=org.apache.jcs.auxiliary.lateral.socket.tcp
.TCPLateralCacheAttributes
jcs.auxiliary.LTCP.attributes.TcpListenerPort=1110
jcs.auxiliary.LTCP.attributes.PutOnlyMode=true
jcs.auxiliary.LTCP.attributes.UdpDiscoveryAddr=228.5.6.8
jcs.auxiliary.LTCP.attributes.UdpDiscoveryPort=6780
jcs.auxiliary.LTCP.attributes.UdpDiscoveryEnabled=true
David Wood
Computing Systems for Wireless Networks
IBM TJ Watson Research Center
daw...@us.ibm.com
914-784-5123 (office), 914-396-6515 (mobile)
From: David Wood/Watson/IBM@IBMUS
To: jcs-users@jakarta.apache.org
Date: 06/09/2011 09:29 AM
Subject: configuration file loading problem
Hi,
I'm considering using JCS 1.3 for a distributed registry in a Mobile
Adhoc Network (MANET), with the following requirements:
1) No central server
2) More than one JVM per ip address
There may be more, but those are the ones that I think cause the most
trouble. So the first question: Can JCS do this (particularly 2)? I've
looked at the UDP discovery and Lateral TCP, which together suggest that
it can.
Next, I've tried to build a simple program that creates a cache, but it
throws an exception about loading the config file....
./dsm-jcs.ccf exists.
Jun 9, 2011 9:26:38 AM org.apache.jcs.engine.control.CompositeCacheManager
getUnconfiguredInstance
INFO: Instance is null, creating with provided config
Jun 9, 2011 9:26:38 AM org.apache.jcs.engine.control.CompositeCacheManager
configure
INFO: Creating cache manager from config file: ./dsm-jcs.ccf
Jun 9, 2011 9:26:38 AM org.apache.jcs.engine.control.CompositeCacheManager
configure
SEVERE: Failed to load properties for name [./dsm-jcs.ccf]
Exception in thread "main" java.lang.IllegalStateException: Failed to load
properties for name [./dsm-jcs.ccf]
at org.apache.jcs.engine.control.CompositeCacheManager.configure(
CompositeCacheManager.java:242)
at org.apache.jcs.JCS.ensureCacheManager(JCS.java:102)
at org.apache.jcs.JCS.getInstance(JCS.java:64)
at Anything.main(Anything.java:21)
I'm running this from within Eclipse and the code is as follows:
public static void main(String argv[]) throws CacheException {
String cfg = "./dsm-jcs.ccf";
File f = new File(cfg);
if (f.exists())
System.err.println(cfg + " exists.");
else
System.err.println(cfg + " does NOT exist.");
JCS.setConfigFilename("./dsm-jcs.ccf");
JCS jcs = JCS.getInstance("DSM");
jcs.put("me", "here");
}
with ./dsm-jcs.ccf file located in the Eclipse project directory (where
the main() is being run).
Thanks in advance for you help.
David Wood
Computing Systems for Wireless Networks
IBM TJ Watson Research Center
daw...@us.ibm.com
914-784-5123 (office), 914-396-6515 (mobile)
