I am new to Grails. I am trying to run the following java RMI-client code from within my Grails web app:

(grails/appname/src/java/ClientProgram.java)

…

import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.math.BigDecimal;
import compute.Compute;
import java.util.Properties;
import java.io.FileInputStream;

public class ClientProgram {
…

public static void run( String regHost, String precision ) {
setSystemProps();
if(System.getSecurityManager() == null) {
System.setSecurityManager(new SecurityManager());
}
try {
String name = “Compute”;
Registry registry = LocateRegistry.getRegistry(regHost);
Compute comp = (Compute) registry.lookup(name);
Pi task = new Pi(Integer.parseInt(precision));
BigDecimal pi = comp.executeTask(task);
System.out.println(pi);
} catch(Exception e) {
System.err.println(“ComputePi exception.”);
e.printStackTrace();
}
}

…
}

See http://pastebin.com/GpQVhvee for the complete class source.

I get the following error when the code is executed:

2012-01-09 19:20:48,794 [http-9876-1] ERROR [/smartmeters].[gsp] – Servlet.service() for servlet gsp threw exception
java.security.AccessControlException: access denied (java.util.PropertyPermission grails.full.stacktrace read)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:374)
at java.security.AccessController.checkPermission(AccessController.java:546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkPropertyAccess(SecurityManager.java:1285)
at java.lang.System.getProperty(System.java:650)
…

Please see http://pastebin.com/jTzaiWfj for the full error message.

I believe this error may appear because I have not got the correct policy settings for this code. I need the following rule in the security policy:

grant codeBase “file:/opt/grails/grails-1.3.7/appname/src/” {
permission java.security.AllPermission;
};

But I cannot find where the policy file is created or stored. If this was just a normal java application I would pass the security policy file in as a system property as follows:

java -Djava.security.policy=policy.file main-class

But I don’t know how to achieve the same effect in Grails. Please can someone tell me how to set the java security policy for my Grails app?

Thanks,
Tom