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.\" '\"
.\" '\" Ivy, Java interface \- library managing connexions to a software bus
.\" '\"
.\" '\" Copyright (C) 1997-2004
.\" '\" Centre d'Études de la Navigation Aérienne
.\" '\"
.\" '\" See the file "license.terms" for information on usage and redistribution
.\" '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
.\" '\"
.\" '\"
.TH "Ivy-java" "" "" "Yannick Jestin <jestin@cena.fr>" ""
.SH "NAME"
ivy\-java \- a software bus library java implementation
.SH "SYNOPSIS"
Ivy\-java provides a useful set of Java library classes for communicating between different
processes through a software bus
.SH "DESCRIPTION"
Ivy is a software bus, i.e. a system that allows any software component to
exchange data freekly.
The basic principle of a software bus is to ease the rapid implementation of new
agents, and to manage a dynamic collection of agents on the bus. Agents connect,
send messages, receive messages, and disconnect without hindering the overall
functionnality of the bus.
Each time an application initializes a connection on the bus, it publishes the
list of the messages it has subscribed to and then emits a a ready message.
.nf
The essential classes of Ivy Java are:
.nf
.I Ivy:
\ API for the connexion to the software bus
.nf
.I IvyApplicationListener:
\ contains 4 virtual methods for handling connexion, deconnexion,
die and direct messages
.nf
.I IvyApplicationAdapter:
\ to implement the IvyApplicationListener methods
.nf
.I Probe:
\ a tool to connect to the bus and exchange with the other agents
.nf
.I IvyDaemon:
\ a daemon to access the bus via a simple socket: you connect (default port :
3456 ), write a message, and exit. The IvyDaemon firts sets up the Ivy
mechanisms and listens to that socket, and each time a string is sent on the
socket, it is forwarded to the bus. This is useful in shell scripts, in cunjunction
with the TCP/UP swiss army knif netcat. For instance: echo "coucou" | nc \-q 0 localhost 3456
.SH "ENVIRONMENT"
.I the IVYBUS property can be given via the \-DIVYBUS=xxx.yyy.zzz:port command line
argument. It can be a list of addresses followed by a port number. The default is a
datagram local address on a non priviledged port 127.255.255.255:2010 , it can also be
shortened to 127:2010. You can specify other datagram adresses with respect to your
local configuration (see ifconfig(1) ), and you can specify an IP multicast
address 228.5.6.7:8910 for instance. You can supply multiple domains,
separated by colons.
.I the IVYBUS shell variable is not used any more, since the policy of the JDK has
changed on this point since 1.3 . You can still use it on a previous JDK.
.nf
.SH "FILES"
.I /usr/share/java/repository/fr/dgac/ivy/*.class
.nf
.I /usr/share/doc/ivy\-java/
.SH "EXAMPLES"
.nf
java \-DIVYBUS=143.196.53.255:2011 fr.dgac.ivy.Probe -help
.nf
java \-DIVYBUS=127.0.0.1:3042,10.192.36:2021,228.5.6.7:54321 fr.dgac.ivy.Probe '^coucou (.*)'
.nf
java fr.dgac.ivy.Probe \-b 10.192.36:2021 '^coucou (.*)'
.SH "NEEDED LIBRARIES"
.I jdk from 1.1 to 1.4
.nf
.I the apache jakarta project regexp library ( supersedes libgnu\-regexp\-java
since ivy 1.2.6 )
.nf
.I libgnu\-getopt\-java
.SH "BUGS"
See the BUGS files for details.
.SH "AUTHORS"
.nf
Yannick Jestin <jestin@cena.fr>
.nf
Francois\-Regis Colin <fcolin@cena.fr>
.SH "SEE ALSO"
ivy\-c (1)
.nf
ivy\-perl (1)
.nf
ivy\-c\-functions (1)
.nf
ivyprobe (1)
.nf
pcrepattern (3)
.sp
For further details, please refer to the Ivy html page at http://www.tls.cena.fr/products/ivy/
.SH "NOTES"
In case of any comment or bug report on this library, please contact jestin@cena.fr
.nf
Special thanks to Michelle Jacomi for her kind support and
documentation writing.
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