php-java-bridge-users Mailing List for PHP/Java Bridge

Hi,
 
this is really great.  Clean java code like this is exactly what the php/java bridge needs.
 
Please feel free to commit the dynamic classloader as well as the other files.  
 
 
Regards,
Jost Boekemeier
 

		
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Hi,
 
I am not sure where this is from, but I can assure you that the information quoted below is wrong.  
 
As I understand it, it's exactly the other way 'round. The bridge should work better in a process environment than in a threaded environment.  For several reasons; for example every time a threaded http server aborts the execution of a module and the shutdown hook of the module is not called, the server may leak resources (socket handles, memory etc.).  Furthermore there is no process barrier, the php module in one thread may read the data of a php module running in another thread.
 
Even though a http server creating processes (e.g. Apache 1.3 or 2.0 with prefork MPM) responds slower than a threaded server (e.g. IIS or Apache 2.0 with thread pool MPM), I would recommend it for php modules.
 
Anyhow, the above discussion doesn't apply to the PHP/Java Bridge.  It doesn't matter whether you run the java.so in a process- or threaded environment. The native code in java.so simply forwards requests to a Java VM running in a different process, and, if SEL is enabled in the kernel, even in a different domain. 
 
 
Regards,
Jost Boekemeier

sachin jain <sac...@re...> schrieb:

 
HI all,

I want to install PHP/JAVA Bridge on Suse Linux.

I saw a mail in PHP mailers list
part of it is given in following para.
"Thomas
25-Feb-2004 03:44 
The documentation is missing an important note:

The PHP/JAVA bridge only works on threaded http servers such as IIS, it does NOT work on http servers such as APACHE which fork off (sub-)processes."

Can anyone clear this doubt wether APACHE supports and works fine with PHP/JAVA bridge or not.

Thanks in advance

Regards,
Sachin 

		
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On 21 Jun 2005 05:44:41 -0000, you wrote:

> =A0
>HI all,
>
>I want to install PHP/JAVA Bridge on Suse Linux.
>
>I saw a mail in PHP mailers list
>part of it is given in following para.
>"Thomas
>25-Feb-2004 03:44=20
>The documentation is missing an important note:
>
>The PHP/JAVA bridge only works on threaded http servers such as IIS, it =
does NOT work on http servers such as APACHE which fork off =
(sub-)processes."
>
>Can anyone clear this doubt wether APACHE supports and works fine with =
PHP/JAVA bridge or not.
>

It definitely works with Apache.

And what you've read does apply to the *old* php java bridge, which
has been replaced by this one.=20

I'm currently using it with Apache 1.3x, mod_php and php5 under
Debian.=20

Apache 1.3 is forking subprocesses, while Apache 2.x at least *has*
Threaded (worker) implementations.

Suse is an RPM based Linux Distribution, so I would try to use the
rpm. If that doesn't work, you'll have to compile it yourself.


	Kai Londenberg

-------------------------------
librics GmbH & Co. KG
G=F6ttinger Chaussee 115
D-30459 Hannover
Tel. +49 511 - 473 88 77
=46ax +49 511 - 473 88 78
mailto: K.L...@li...

 =A0=0AHI all,=0A=0AI want to install PHP/JAVA Bridge on Suse Linux.=0A=0AI=
 saw a mail in PHP mailers list=0Apart of it is given in following para.=0A=
"Thomas=0A25-Feb-2004 03:44 =0AThe documentation is missing an important no=
te:=0A=0AThe PHP/JAVA bridge only works on threaded http servers such as II=
S, it does NOT work on http servers such as APACHE which fork off (sub-)pro=
cesses."=0A=0ACan anyone clear this doubt wether APACHE supports and works =
fine with PHP/JAVA bridge or not.=0A=0AThanks in advance=0A=0ARegards,=0ASa=
chin

Hello,

Like I wrote earlier in the help forum, I wrote a small patch for the
php-java-bridge to enable it to dynamically load and unload classes.

With this patch, it's possible to have fast develop and test cycles
with a real mix of Java and PHP. (Without sacrificing performance, due
to caching and lazy evaluation btw)

Oh, and it adds a simple Thread Pool implementation.

Hope you'll integrate this into the next version of the
php-java-bridge.

More at

http://sourceforge.net/tracker/index.php?func=3Ddetail&aid=3D1224266&grou=
p_id=3D117793&atid=3D679235

with best regards,

	Kai Londenberg

-------------------------------
librics GmbH & Co. KG
G=F6ttinger Chaussee 115
D-30459 Hannover
Tel. +49 511 - 473 88 77
=46ax +49 511 - 473 88 78
mailto: K.L...@li...

Hi,

> I've noticed that the script fails because I've no output from the php cli:
> for example php -v gives me no output.
> Disabling the option ; java.socketname=/var/run/.php-java-bridge_socket in
> my java.ini, php -v and the other commands work!
> Haow could I enable the php-java -bridge as a service?????
> Any ideas??????
> Tanx Michele

thank you very much for the bug report.  Version 2.0.7 probably fixes
this bug, the code doesn't require semaphores anymore. But feel free to
create a bug report anyway.


Can you please add the following lines to the beginning of the php-java-
bridge startup script:

# remove old semaphores 
ipcrm -s `ipcs -s | fgrep 0x00009168 | awk '{print $2}'`

and re-start the bridge?

If it still doesn't work, please add a new problem report and attach the
output of the command:

   strace `which php -i` 

to the ticket.




Regards,
Jost Boekemeier





	

	
		
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I've a prod. Env. RedHat EL3, j2sdk1.4.2.05, apache 2.0.54 php5.0.4
compiled with './configure' '--host=i686-redhat-linux'
'--build=i686-redhat-linux' '--target=i686-redhat-linux-gnu'
'--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin'
'--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share'
'--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec'
'--localstatedir=/var' '--sharedstatedir=/usr/com' '--mandir=/usr/share/man'
'--infodir=/usr/share/info' '--cache-file=../config.cache'
'--with-config-file-path=/etc' '--with-config-file-scan-dir=/etc/php.d'
'--enable-force-cgi-redirect' '--disable-debug' '--enable-pic'
'--disable-rpath' '--enable-inline-optimization' '--with-bz2'
'--with-db4=/usr' '--with-curl' '--with-dom=/usr' '--with-exec-dir=/usr/bin'
'--with-freetype-dir=/usr' '--with-png-dir=/usr' '--with-gd'
'--enable-gd-native-ttf' '--with-ttf' '--with-gdbm' '--with-gettext'
'--with-ncurses' '--with-gmp' '--with-iconv' '--with-jpeg-dir=/usr'
'--with-openssl' '--with-png' '--with-pspell' '--with-regex=system'
'--with-xml' '--with-expat-dir=/usr' '--with-pcre=/usr' '--with-zlib'
'--with-layout=GNU' '--enable-bcmath' '--enable-exif' '--enable-ftp'
'--enable-magic-quotes' '--enable-safe-mode' '--enable-sockets'
'--enable-sysvsem' '--enable-sysvshm' '--enable-discard-path'
'--enable-track-vars' '--enable-trans-sid' '--enable-yp' '--enable-wddx'
'--enable-mbstring' '--enable-mbstr-enc-trans' '--enable-mbregex'
'--without-oci8' '--with-pear=/usr/share/pear' '--with-imap=shared'
'--with-imap-ssl' '--with-kerberos=/usr/kerberos' '--with-ldap=shared'
'--with-mysql=shared,/usr' '--with-unixODBC=shared' '--enable-memory-limit'
'--enable-bcmath' '--enable-shmop' '--enable-versioning' '--enable-calendar'
'--enable-dbx' '--enable-dio' '--with-imagick' '--enable-mcal'
'--with-apxs2filter=/usr/sbin/apxs', php-java-bridge compiled with 
./configure     --host=i686-redhat-linux --build=i686-redhat-linux
--target=i686-redhat-linux-gnu --prefix=/usr --exec-prefix=/usr
--bindir=/usr/bin --sbindir=/usr/sbin --datadir=/usr/share
--includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec
--localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man
--infodir=/usr/share/info --cache-file=../config.cache
--with-java=/usr/java/j2sdk1.4.2_05 \
My /etc/php.d/java.ini: 
extension = java.so
[java]
java.log_level=1
java.log_file=/var/log/php-java-bridge.log
# Comment out the following line if you want to start java
# automatically as a sub-process of the Apache 2.0 service or if you
# have already started multicast backends for failover/load balancing.
; java.socketname=/var/run/.php-java-bridge_socket
java.java_home=/usr/java/j2sdk1.4.2_05
java.java=/usr/java/j2sdk1.4.2_05/bin/java
And it works fine as an apache sub-process :)
Enabling java.socketname, the script php-java-bridge fails:
Starting php-java-bridge: Error: PHP/Java Bridge module not installed.
                                                           [FAILED]

I've noticed that the script fails because I've no output from the php cli:
for example php -v gives me no output.
Disabling the option ; java.socketname=/var/run/.php-java-bridge_socket in
my java.ini, php -v and the other commands work!
Haow could I enable the php-java -bridge as a service?????
Any ideas??????
Tanx Michele

Hi,
 
I have created a standard JavaBridge.war file which could be deployed tomcat 4.  I have tested on tomcat 4 only, but it should/will work on any modern servlet engine:
 
 
http://php-java-bridge.sf.net/JavaBridge.war
http://php-java-bridge.sf.net/java.so   (php4 module for RedHat Linux)
 
To install it please deploy the JavaBridge.war into your servlet engine and java.so into your Linux PHP 4 extension directory.  Edit the php.ini so that it contains the following entries:
 

extension = java.so
[java]
java.hosts="127.0.0.1:8080"
java.servlet=/JavaBridge/PhpJavaServlet

Known problems:
 
* Please do not deploy the current JavaBridge.war into a server connected to the internet. 
 
* It is currently not possible to call back php from java procedures (JSR223 will handle this).
 
* Communication through the servlet is slower than communication through local ("unix domain") sockets, but it is still much faster than SOAP based web services.
 
* the java.so above is for Linux (intel) only.
 
I will commit the source code as soon as possible. (I seems I have forgot the cvs account password during my vacation..)
 
 
Regards,
Jost Boekemeier
 

		
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Hi,
 
in the next version (2.0.7) it will be possible to deploy the backend ("JavaBridge.war") into a standard servlet engine or application server (e.g. tomcat, jrun or websphere).
 
Most of these servlet engines or application servers support "load balancing" and "fail over", and I think it isn't necessary to also keep the experimental (and broken) "multicast" code inside the PHP/Java Bridge.  
 
If nobody objects, I will remove the files multicast.c, multicast.h and Listener.java from the bridge.  
 
 
Regards,
Jost Boekemeier
 

		
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