	CS 696 Emerging Technologies: Java Distributed Computing Spring Semester, 1999 Jini on Rohan
	Previous Lecture Notes Index © 1999, All Rights Reserved, SDSU & Roger Whitney San Diego State University -- This page last updated 01-Apr-99

Contents of Doc 21, Jini on Rohan

References

Starting Jini ^TM Technology Services from the Command Line

Local Web Location: http://www-rohan.sdsu.edu/doc/jini/doc/example/StartingService.html


Doc 21, Jini on Rohan Slide # 2

Jini on Rohan & Moria

Jini is installed on rohan.sdsu.edu and moria.sdsu.edu in /opt/jini1_0/. The Jini 1.0 jar files are located in /opt/jini1_0/lib/.

Jini Jar files

jini-core.jar	outrigger-dl.jar	space-examples.jar
jini-examples-dl.jar	outrigger.jar	sun-util.jar
jini-examples.jar	pro.zip	tools.jar
jini-ext.jar	reggie-dl.jar	transient-outrigger.jar
mahalo-dl.jar	reggie.jar	mahalo.jar
space-examples-dl.jar

Jar file Description

Server Side	Client Side	Description
jini-core.jar	none	Core Jini platform interfaces and classes
jini-ext.jar	none	Jini platform extension interfaces and classes
reggie.jar	reggie-dl.jar	Jini Lookup service implementation
mahalo.jar	mahalo-dl.jar	Jini Transaction implementation
outrigger.jar, transient-outrigger.jar	outrigger-dl.jar	JavaSpaces technology implementation
jini-examples.jar	jini-examples-dl.jar	Lookup Browser and Service GUI examples
space-examples.jar	space-examples-dl.jar	JavaSpaces technology examples
tools.jar	none	ClassServer, DepencyChecker, SerializationChecker
sun-util.jar	none	Development utilities
pro.zip	none	ODI classes needed by Outrigger


Doc 21, Jini on Rohan Slide # 3

Standard Extensions
The following jar files are standard extensions to the JDK 1.2 on rohan and moria. This means you do not have to place them on your classpath to use any of the classes in these jar files.

jini-core.jar	jini-ext.jar
mahalo.jar	outrigger.jar
reggie.jar	sun-util.jar
transient-outrigger.jar

reggie, mahalo, & outrigger jar files
reggie-dl.jar is a subset of reggie.jar
mahalo-dl.jar is a subset of mahalo.jar
outrigger-dl.jar is NOT a subset of outrigger.jar


Doc 21, Jini on Rohan Slide # 4

Running rmid, class server & reggie

In order to run reggie you need to be running rmid. If you want proxy classes downloaded to your client you need an http server. You can use the web server running on www-rohan. See http://www-rohan.sdsu.edu/hpguide.html for more information on using that web server. On rohan and moria you will not be able to run rmid or the http server on the standard ports. When you run reggie you need to provide the port numbers you are using for rmid and the http server.

rmid

rmid -port portnumber &

will start rmid

class server
The following will start the HTTP server on rohan running on port 8888. The default port is 8080

java  -jar  /opt/jini1_0/lib/tools.jar  -port 8888  -dir  /opt/jini1_0/lib/

Options
[-port port] [-dir dir] [-trees] [-verbose]

-dir

Specify the document root. All class files in this directory & recursively in subdirectories are served up

-trees

Cause the HTTP server to search all the jar files in its document root and download the class it finds

-verbose

log downloading


Doc 21, Jini on Rohan Slide # 5

reggie
You need to provide reggie a policy file, a log directory, and a code base for downloading client code. When you start reggie, it will pick a random port if the standard reggie port is not available. The only way to find the port used by reggie is to use mutlicast discovery, search for your reggie group, and print out its port. Once you have the service registrar for the lookup service, get the LookupLocator. It will give you the port of the lookup service. The general form to start reggie is:

java -jar <lookup-server-jarfile> <lookup-client-codebase> 
   <lookup-policy-file>  <output-log-dir>  <lookup-service-group>

An example setting a non-standard port for rmid:

java –Djava.rmi.activation.port=5678  -jar  /opt/jini1_0/lib/reggie.jar 
   http://fargo.sdsu.edu:8888/reggie-dl.jar 
   /opt/jini1_0/example/lookup/policy 
   /tmp/reggie_log 
   whitney.cs.sdsu.edu

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