Re: [Wrapper-user] Converting Java Application into Windows Service ?

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Thanks Leif for such a detailed reply.

The first step I did was to follow point 4 suggested by you. I started a non-daemon thread from my main method then my service was not stopped automatically until I stopped it.

Most of the steps you told me were about clean up and I was able to do them simply.

I have confusion about point 3. Please let me tell you about some context. I am going to use embedded Tom Cat in my application and I need it to install my program as Windows Service. 

So what I did initially was this.
http://wrapper.tanukisoftware.org/doc/english/integrate-listener.html

I created my application class "MyApp" with two methods StartTomCat()  and StopTomCat() and I instantiated an object of my application in Main class (given by you as example). 

The log is as follows:

STATUS | wrapper  | 2007/03/19 12:06:56 | CP30 Service installed.
STATUS | wrapper  | 2007/03/19 12:06:59 | Starting the CP30 Service service...
STATUS | wrapper  | 2007/03/19 12:06:59 | --> Wrapper Started as Service
STATUS | wrapper  | 2007/03/19 12:06:59 | Launching a JVM...
INFO   | jvm 1    | 2007/03/19 12:06:59 | Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org
INFO   | jvm 1    | 2007/03/19 12:06:59 |   Copyright 1999-2006 Tanuki Software, Inc.  All Rights Reserved.
INFO   | jvm 1    | 2007/03/19 12:06:59 | 
INFO   | wrapper  | 2007/03/19 12:07:04 | Waiting to start...
INFO   | jvm 1    | 2007/03/19 12:07:00 | 
INFO   | jvm 1    | 2007/03/19 12:07:00 |     Constructor is called!
INFO   | jvm 1    | 2007/03/19 12:07:00 |     Application is started!
INFO   | jvm 1    | 2007/03/19 12:07:06 | InThread !InThread !InThread !InThread 
INFO   | jvm 1    | 2007/03/19 12:07:47 |     Application is stopped!
INFO   | jvm 1    | 2007/03/19 12:07:47 | InThread !InThread !
INFO   | jvm 1    | 2007/03/19 12:07:48 | InThread !InThread 
STATUS | wrapper  | 2007/03/19 12:07:48 | <-- Wrapper Stopped

In conf file , I defined 

wrapper.java.mainclass=com.myappl.vcp.service.Main

but I did not define any thing for wrapper.app.parameter.1

I did not use WrapperSimpleApp instead I used class implementing  WrapperListener and was able to achieve the expected results. Now source code for WrapperSimpleApp is not given so I do not know if I am missing some things in my WrapperListener class. I want Start() and Stop() methods of myself so I want to go with Integration method 3.

So my understanding is that once I implement the interface WrapperListner then I have to make sure that I call startTomCat() from start() of it and StopTomCat() from stop() method of it and the interface will take care every thing itself. Basically my whole logic is floating around this code http://wrapper.tanukisoftware.org/doc/english/integrate-listener.html . Even my application class does not have main method because it has only two methods StartTomCat() and STopTomCat() .

Please let me know if there is a flaw in my understanding.

Thanks,

Almond

Leif Mortenson <le...@ta...> wrote: Almond,
    You need to read the documentation again :-)
http://wrapper.tanukisoftware.org/doc/english/integrate.html

    Most likely method #1 will work for you:
http://wrapper.tanukisoftware.org/doc/english/integrate-simple-win.html

   There were a few problems with what you said below:
1) You should start with a clean directory and copy the required Wrapper 
files into your
application rather than the other way around.  There are some things 
that you will not
need such as the wrappertest.jar file.

2) You should create your wrapper.conf file based on the template file:
WRAPPER_HOME/src/conf/wrapper.conf.in rather than using
WRAPPER_HOME/conf/wrapper.conf.

3) As specified in the documentation and in the wrapper.conf file,
the wrapper.java.mainclass property is used to specify the main class
passed to the JVM.  In most cases however, this is not your application's
main class.  The Wrapper has some code which must be initialized in the
JVM first.  This is covered clearly in the above documentation.  Try this:
wrapper.java.mainclass=org.tanukisoftware.wrapper.WrapperSimpleApp

Your main method is then specified as the first parameter to the above main
class.
wrapper.app.parameter.1=

4) From the output that you sent however, it looks like your main class
starts, prints a startup message, a shutdown message and then exits.
Even if you do all of the above correctly, your application will still quit
immediately because your main method does not appear to be designed
to stay running.   Running your class standalone in Java would have the
same effect.

The Wrapper works correctly in cases like this.  But from your post, it
sounds like you are expecting that the JVM stay running.  Your application
needs to start at least one non-daemon thread within the JVM that does not
terminate.   When all such threads have terminated, the JVM things the
application has completed and the JVM will exit.

5) When you are still trying to get things working, I suggest running the
application in a console window using TestWrapper.bat rather than running
as a service.  It is easier to see what is happening.  Once that is all 
working,
THEN, you should try it as a service.

6) Not required, but I suggest copying your bat files out of the
WRAPPER_HOME/src/bin and then naming them after your application.

Let me know if you have more questions...After checking out the docs of
course.

Cheers,
Leif

Almond Khan wrote:
> All, I downloaded the source code and made my simple example with help 
> of code given on site(jar file is attached). That is very simple 
> example. My start method and stop method simply print message and then 
> exit.
>
> 1- I created jar file
> 2- I put jar file in lib with wrapper.jar and wrappertest.jar
> 3-  I added classpath in conf file
>            wrapper.java.classpath.3=../lib/myexample.jar
> 4-  I modified Main class in conf file and pointed it to my example
>            wrapper.java.mainclass=org.tanukisoftware.wrapper.example.Main
>
> But when I am running , my service starts and stops(I assume). How did 
> I figure it out ??
>
> C:\wrapper-delta\wrapper-delta-pack-3.2.3\bin>InstallTestWrapper-NT.bat
> wrapper  | Test Wrapper Sample Application installed.
>
> C:\wrapper-delta\wrapper-delta-pack-3.2.3\bin>StartTestWrapper-NT.bat
> wrapper  | Starting the Test Wrapper Sample Application service...
> wrapper  | Test Wrapper Sample Application started.
>
> C:\wrapper-delta\wrapper-delta-pack-3.2.3\bin>StopTestWrapper-NT.bat
> wrapper  | The Test Wrapper Sample Application service was not running.
>
> C:\wrapper-delta\wrapper-delta-pack-3.2.3\bin>UninstallTestWrapper-NT.bat
> wrapper  | Test Wrapper Sample Application removed.
>  
> So service was started but it stopped itself. I tried to start service 
> from windows service controller, it showed it was started but when I 
> refreshed service controller, it was not running.
>
> I looked at log and it also says the same thing.(Application is 
> started and Application is stopped are my custom messages)
>
> STATUS | wrapper  | 2007/03/16 12:53:08 | Test Wrapper Sample 
> Application installed.
> STATUS | wrapper  | 2007/03/16 12:53:12 | Starting the Test Wrapper 
> Sample Application service...
> STATUS | wrapper  | 2007/03/16 12:53:12 | --> Wrapper Started as Service
> STATUS | wrapper  | 2007/03/16 12:53:12 | Launching a JVM...
> INFO   | jvm 1    | 2007/03/16 12:53:12 | Wrapper (Version 3.2.3) 
> http://wrapper.tanukisoftware.org
> INFO   | jvm 1    | 2007/03/16 12:53:12 |   Copyright 1999-2006 Tanuki 
> Software, Inc.  All Rights Reserved.
> INFO   | jvm 1    | 2007/03/16 12:53:12 |
> INFO   | jvm 1    | 2007/03/16 12:53:13 |
> INFO   | jvm 1    | 2007/03/16 12:53:13 |     Application is started!
> INFO   | jvm 1    | 2007/03/16 12:53:14 |
> INFO   | jvm 1    | 2007/03/16 12:53:14 |     Application is stopped!
> STATUS | wrapper  | 2007/03/16 12:53:14 | Test Wrapper Sample 
> Application started.
> STATUS | wrapper  | 2007/03/16 12:53:15 | <-- Wrapper Stopped
>
>
>
> I wonder why stop() method is getting called and why service is 
> stopping itself.
>
> Any help would be really appreciated. Please find an attached jar file 
> and conf for my code
>
> Thanks,
>
> Khan
>
> */Chuck Williams /* wrote:
>
>     Wrapper is great to run your app as either a windows service or
>     linux daemon.ï¿½ To try something quickly, read the Quick Start on
>     the project home page at
>     http://wrapper.tanukisoftware.org/doc/english/introduction.html
>
>     Chuck
>
>     Almond Khan wrote on 03/14/2007 01:47 PM:
>>     Hi,
>>
>>     I googled for converting java application and ended with this
>>     project.
>>
>>     We have embedded tomcat in our application and we use console to
>>     start/stop it.
>>
>>     Now we are moving forward and we want to run applictaion as
>>     Windows service and I am wondering how can I convert my .class
>>     into Windows service.
>>
>>     "So question is that how can I convert .class file into windows
>>     service"
>>
>>     Any help is appreciated
>>
>>     Thanks,
>>
>>     Noman
>

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