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authorjestin2005-11-22 12:15:57 +0000
committerjestin2005-11-22 12:15:57 +0000
commit5d466ac8508cf202bd025bc9d813b07fc47ac44b (patch)
treeb7e3e62dde45b2b5356deaad662fc46d4458d634 /doc
parente66920646a471f94cd7a5af774eb0685b488ca0e (diff)
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added After tool ( TODO ), changed Probe and IvyDaemon to tools
Diffstat (limited to 'doc')
-rw-r--r--doc/ivy-java.sgml48
1 files changed, 27 insertions, 21 deletions
diff --git a/doc/ivy-java.sgml b/doc/ivy-java.sgml
index 866a08d..dd8223e 100644
--- a/doc/ivy-java.sgml
+++ b/doc/ivy-java.sgml
@@ -18,8 +18,8 @@
<artheader>
<copyright>
-<year>2004</year>
-<holder>CENA, Centre d'Etudes de la Navigation Aérienne</holder>
+<year>2005</year>
+<holder>DGAC/DSNA/DTI</holder>
</copyright>
<title>The Ivy Java library guide</title>
@@ -32,18 +32,18 @@
<affiliation><address><email>jestin@cena.fr</email></address></affiliation>
</author>
</authorgroup>
-<date>August 27, 2004</date>
+<date>November 22, 2005</date>
<copyright>
-<year>2004</year>
-<holder>Centre d'Études de la Navigation Aérienne</holder>
+<year>2005</year>
+<holder>DGAC/DSNA/DTI</holder>
</copyright>
<abstract>
<para>
This document is a programmer's guide that describes how to use the Ivy
Java library to connect applications to an Ivy bus. This guide describes
-version 1.2.6 of the library. This document itself is part of the Java
+version 1.2.8 of the library. This document itself is part of the Java
package, available on the <ulink
url="http://www.tls.cena.fr/products/ivy/">Ivy web site</ulink>.
</para>
@@ -141,12 +141,14 @@ Those could be included in the jar file, but not in the debian package.
<para>
In order to test the presence of Ivy on your system once installed, run the following command:
<screen>
-$ <userinput>java fr.dgac.ivy.Probe</userinput>
+$ <userinput>java fr.dgac.ivy.tools.Probe</userinput>
</screen>
If should display a line about broadcasting on a strange address, this is OK
and means it is ready and working. If it complains about a missing class (
java.lang.NoClassDefFoundError ), then you have not pointed your virtual
machine to the jar file or your installation is incomplete.
+
+Alternatively, you can use the jprobe shell script.
</para>
</sect2>
@@ -214,19 +216,19 @@ $
<sect2><title>Testing</title>
<para>
-We are going to test our application with <command>fr.dgac.ivy.Probe</command>.
+We are going to test our application with <command>fr.dgac.ivy.tools.Probe</command>.
In a shell, launch ivyTranslater:
<screen>
$ <userinput>java ivyTranslater</userinput>
</screen>
-In another shell, launch <command>java fr.dgac.ivy.Probe '(.*)'</command>.
+In another shell, launch <command>java fr.dgac.ivy.tools.Probe '(.*)'</command>.
You can see that the IvyTranslater has joined the bus, published its
subscriptions, and sent the mandatory ready message. As your probe has
subscribed to the eager regexp .* and reports the matched string within the
brackets (.*), the ready message is printed.
<screen>
-$ <userinput>java fr.dgac.ivy.Probe '(.*)'</userinput>
+$ <userinput>java fr.dgac.ivy.tools.Probe '(.*)'</userinput>
you want to subscribe to (.*)
broadcasting on 127.255.255.255:2010
IvyTranslater connected
@@ -328,7 +330,7 @@ way to quit a program within a callback (please don't use
<function>System.exit()</function> before
having stopped the bus, even if it works ... ). Note that it is still
possible to reconnect to the bus by calling <function>start()</function> once
-again (the bug has been corrected since 1.2.8).
+again.
</para></sect2>
<sect2><title>Emitting messages</title>
@@ -409,8 +411,7 @@ By default, an application doesn't send the messages to itself. Usually, there
are more efficient and convenient ways to communicate withing a program.
However, if you want to take benefit of the ease of ivy or to be as
transparent as possible, you can set the Ivy object so that the pattern
-matching and message sending will be done for the sender too. This method
-exists since 1.2.4.
+matching and message sending will be done for the sender too.
<programlisting>
public void sendToSelf(boolean b);
public boolean isSendToSelf();
@@ -460,8 +461,8 @@ two ivy clients. It overrides the subscription mechanism, making the exchange
faster ( there is no regexp matching, etc ). However, this features breaks the
software bus metaphor, and should be replaced with the relevant bounded
regexps, at the cost of a small CPU overhead. The full direct message
-mechanism in Java has been made available since the ivy-java-1.2.3, but i
-won't document it to make it harder to use.
+mechanism in Java has been made available since the ivy-java-1.2.3, but it
+won't be much documented, in order to make it harder to use.
</para>
</sect2>
@@ -472,7 +473,7 @@ and decoding of the messages and of the execution of the callbacks. Thus, if a
callback consumes much time, the rest of the communication is put on hold and
the processing is serialised, eventually leading to a stacking in the socket
buffer and to the blocking of the message sender. To alleviate this, we have
-set up since ivy-java 1.2.4 an asynchronous subscription, where each and every
+set up (since 1.2.4) an asynchronous subscription, where each and every
time a callback is performed, it is done in a newly created separate thread.
As creating a thread is quite expensive, one should use this method for
lengthy callbacks only. Furthermore, to avoid concurrent access to the
@@ -544,7 +545,7 @@ For a code sample, see the Probe utility source code.
<para>
Probe is your swiss army knife as an Ivy Java developer. Use it
to try your regular expressions, to check the installation of the system, to
-log the messages, etc. To use it, either run fr.dgac.ivy.Probe, or run the jar
+log the messages, etc. To use it, either run fr.dgac.ivy.tools.Probe, or run the jar
file directly with <command>$ java -jar ivy.jar</command>
</para>
@@ -576,8 +577,8 @@ be useful when running different probes
</para></listitem>
<listitem><para>
-d allows you to use JPROBE on debug mode. It is the same as setting the
-VY_DEBUG property ( java -DIVY_DEBUG fr.dgac.ivy.Probe is the same as java
-fr.dgac.ivy.Probe -d )
+VY_DEBUG property ( java -DIVY_DEBUG fr.dgac.ivy.tools.Probe is the same as java
+fr.dgac.ivy.tools.Probe -d )
</para></listitem>
<listitem><para>
-h dumps the command line options help.
@@ -618,14 +619,19 @@ To do so, we can use the IvyDaemon, which is a TCP daemon sitting and waiting
on the port 3456, and also connected on the default bus. Each time a remote
application connects to this port, every line read until EOF will be forwarded
on the bus. The standard port and bus domain can be overridden by command line
-switches ( use <command>$ java fr.dgac.ivy.IvyDaemon -h</command> ).
-First, spawn an ivy Damon: <command>$ java fr.dgac.ivy.IvyDaemon</command>
+switches ( use <command>$ java fr.dgac.ivy.tools.IvyDaemon -h</command> ).
+First, spawn an ivy Damon: <command>$ java fr.dgac.ivy.tools.IvyDaemon</command>
then, within your shell scripts, use a short TCP connexion ( for instance
netcat ): <command>$ echo "hello world" | nc -q 0 localhost 3456</command>
The "hello world" message will be sent on the default Ivy Bus to anyone having
subscribe to a matching pattern</para>
</sect2>
+<sect2><title>After</title>
+<para>
+TODO
+</sect2>
+
</sect1><sect1><title>programmer's style guide</title>
<para>
TODO