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Posted to users@tomcat.apache.org by "Pesonen, Harri" <ha...@sap.com> on 2017/06/21 12:33:19 UTC
How to stop Tomcat if servlet fails to initialize
Hello, if one servlet fails to initialize, meaning that ServletContextListener.contextInitialized() throws exception, then Tomcat still starts (but without the servlet).
I found out that if servlet calls System.exit(1), then Tomcat dies. Is this the only way to make this happen?
This does not work:
-Dorg.apache.catalina.startup.EXIT_ON_INIT_FAILURE=true
-Harri
Re: How to stop Tomcat if servlet fails to initialize
Posted by Mark Thomas <ma...@apache.org>.
On 22/06/17 11:57, Pesonen, Harri wrote:
> 8.5.13. Maybe it is supported in 9 only.
Yes, throwOnFailure is 9.0.x only. It comes from
https://bz.apache.org/bugzilla/show_bug.cgi?id=60152
What you can do in 8.5.x (and 9.0.x) is:
<Context failCtxIfServletStartFails="true" >
That will stop the web application starting if a load-on-startup servlet
fails.
Looking more at the changes for throwOnFailure, it isn't going to help
because the Context failure in this case is viewed as a controlled
failure. i.e. the Context detected a problem and put itself into the
failed state.
What you could do - which would work equally well in 8.5.x and 9.0.x is
write a simple LifecycleListener, attach it to the Server and have it
traverse the container hierarchy on the Lifecycle.AFTER_START_EVENT and
check that all containers are started. If any are found in the FAILED
state, shut Tomcat down.
Mark
>
> -Harri
>
> -----Original Message-----
> From: Mark Thomas [mailto:markt@apache.org]
> Sent: 22. kesäkuuta 2017 13:46
> To: Tomcat Users List <us...@tomcat.apache.org>
> Subject: Re: How to stop Tomcat if servlet fails to initialize
>
> On 22/06/17 11:44, Pesonen, Harri wrote:
>> Hello, I tried adding throwOnFailure to conf/context.xml, but it did not work, I only got this:
>>
>> 10:34:23.582 (14) WRN> (org.apache.catalina.startup.SetContextPropertiesRule#begin) [SetContextPropertiesRule]{Context} Setting property 'throwOnFailure' to 'true' did not find a matching property.
>>
>> Maybe I did it wrong:
>>
>> <Context throwOnFailure="true" >
>
> I was working from the code rather than testing but this should work.
> What version are you using?
>
> Mark
>
>
>>
>> -Harri
>>
>> -----Original Message-----
>> From: Mark Thomas [mailto:markt@apache.org]
>> Sent: 21. kesäkuuta 2017 17:28
>> To: Tomcat Users List <us...@tomcat.apache.org>
>> Subject: Re: How to stop Tomcat if servlet fails to initialize
>>
>> On 21/06/17 13:33, Pesonen, Harri wrote:
>>> Hello, if one servlet fails to initialize, meaning that ServletContextListener.contextInitialized() throws exception, then Tomcat still starts (but without the servlet).
>>
>> If ServletContextListener.contextInitialized(), the web application will
>> not start.
>>
>> Servlets are not initialised until first used so they can't prevent an
>> application from starting. The one exception is Servlets configured for
>> "load on startup". Any failure of these servlets will cause the
>> application to fail to start.
>>
>>> I found out that if servlet calls System.exit(1), then Tomcat dies. Is this the only way to make this happen?
>>> This does not work:
>>> -Dorg.apache.catalina.startup.EXIT_ON_INIT_FAILURE=true
>>
>> You can try setting the (completely undocumented) throwOnFailure
>> attribute for the Context, Host, Engine, Service and Server.
>>
>> The Context you can set in conf/context.xml so it applies to all web
>> applications.
>>
>> Mark
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
> ---------------------------------------------------------------------
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> For additional commands, e-mail: users-help@tomcat.apache.org
>
---------------------------------------------------------------------
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RE: How to stop Tomcat if servlet fails to initialize
Posted by "Pesonen, Harri" <ha...@sap.com>.
8.5.13. Maybe it is supported in 9 only.
-Harri
-----Original Message-----
From: Mark Thomas [mailto:markt@apache.org]
Sent: 22. kesäkuuta 2017 13:46
To: Tomcat Users List <us...@tomcat.apache.org>
Subject: Re: How to stop Tomcat if servlet fails to initialize
On 22/06/17 11:44, Pesonen, Harri wrote:
> Hello, I tried adding throwOnFailure to conf/context.xml, but it did not work, I only got this:
>
> 10:34:23.582 (14) WRN> (org.apache.catalina.startup.SetContextPropertiesRule#begin) [SetContextPropertiesRule]{Context} Setting property 'throwOnFailure' to 'true' did not find a matching property.
>
> Maybe I did it wrong:
>
> <Context throwOnFailure="true" >
I was working from the code rather than testing but this should work.
What version are you using?
Mark
>
> -Harri
>
> -----Original Message-----
> From: Mark Thomas [mailto:markt@apache.org]
> Sent: 21. kesäkuuta 2017 17:28
> To: Tomcat Users List <us...@tomcat.apache.org>
> Subject: Re: How to stop Tomcat if servlet fails to initialize
>
> On 21/06/17 13:33, Pesonen, Harri wrote:
>> Hello, if one servlet fails to initialize, meaning that ServletContextListener.contextInitialized() throws exception, then Tomcat still starts (but without the servlet).
>
> If ServletContextListener.contextInitialized(), the web application will
> not start.
>
> Servlets are not initialised until first used so they can't prevent an
> application from starting. The one exception is Servlets configured for
> "load on startup". Any failure of these servlets will cause the
> application to fail to start.
>
>> I found out that if servlet calls System.exit(1), then Tomcat dies. Is this the only way to make this happen?
>> This does not work:
>> -Dorg.apache.catalina.startup.EXIT_ON_INIT_FAILURE=true
>
> You can try setting the (completely undocumented) throwOnFailure
> attribute for the Context, Host, Engine, Service and Server.
>
> The Context you can set in conf/context.xml so it applies to all web
> applications.
>
> Mark
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
Re: How to stop Tomcat if servlet fails to initialize
Posted by Mark Thomas <ma...@apache.org>.
On 22/06/17 11:44, Pesonen, Harri wrote:
> Hello, I tried adding throwOnFailure to conf/context.xml, but it did not work, I only got this:
>
> 10:34:23.582 (14) WRN> (org.apache.catalina.startup.SetContextPropertiesRule#begin) [SetContextPropertiesRule]{Context} Setting property 'throwOnFailure' to 'true' did not find a matching property.
>
> Maybe I did it wrong:
>
> <Context throwOnFailure="true" >
I was working from the code rather than testing but this should work.
What version are you using?
Mark
>
> -Harri
>
> -----Original Message-----
> From: Mark Thomas [mailto:markt@apache.org]
> Sent: 21. kesäkuuta 2017 17:28
> To: Tomcat Users List <us...@tomcat.apache.org>
> Subject: Re: How to stop Tomcat if servlet fails to initialize
>
> On 21/06/17 13:33, Pesonen, Harri wrote:
>> Hello, if one servlet fails to initialize, meaning that ServletContextListener.contextInitialized() throws exception, then Tomcat still starts (but without the servlet).
>
> If ServletContextListener.contextInitialized(), the web application will
> not start.
>
> Servlets are not initialised until first used so they can't prevent an
> application from starting. The one exception is Servlets configured for
> "load on startup". Any failure of these servlets will cause the
> application to fail to start.
>
>> I found out that if servlet calls System.exit(1), then Tomcat dies. Is this the only way to make this happen?
>> This does not work:
>> -Dorg.apache.catalina.startup.EXIT_ON_INIT_FAILURE=true
>
> You can try setting the (completely undocumented) throwOnFailure
> attribute for the Context, Host, Engine, Service and Server.
>
> The Context you can set in conf/context.xml so it applies to all web
> applications.
>
> Mark
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
RE: How to stop Tomcat if servlet fails to initialize
Posted by "Pesonen, Harri" <ha...@sap.com>.
Hello, I tried adding throwOnFailure to conf/context.xml, but it did not work, I only got this:
10:34:23.582 (14) WRN> (org.apache.catalina.startup.SetContextPropertiesRule#begin) [SetContextPropertiesRule]{Context} Setting property 'throwOnFailure' to 'true' did not find a matching property.
Maybe I did it wrong:
<Context throwOnFailure="true" >
-Harri
-----Original Message-----
From: Mark Thomas [mailto:markt@apache.org]
Sent: 21. kesäkuuta 2017 17:28
To: Tomcat Users List <us...@tomcat.apache.org>
Subject: Re: How to stop Tomcat if servlet fails to initialize
On 21/06/17 13:33, Pesonen, Harri wrote:
> Hello, if one servlet fails to initialize, meaning that ServletContextListener.contextInitialized() throws exception, then Tomcat still starts (but without the servlet).
If ServletContextListener.contextInitialized(), the web application will
not start.
Servlets are not initialised until first used so they can't prevent an
application from starting. The one exception is Servlets configured for
"load on startup". Any failure of these servlets will cause the
application to fail to start.
> I found out that if servlet calls System.exit(1), then Tomcat dies. Is this the only way to make this happen?
> This does not work:
> -Dorg.apache.catalina.startup.EXIT_ON_INIT_FAILURE=true
You can try setting the (completely undocumented) throwOnFailure
attribute for the Context, Host, Engine, Service and Server.
The Context you can set in conf/context.xml so it applies to all web
applications.
Mark
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
Re: How to stop Tomcat if servlet fails to initialize
Posted by Mark Thomas <ma...@apache.org>.
On 21/06/17 13:33, Pesonen, Harri wrote:
> Hello, if one servlet fails to initialize, meaning that ServletContextListener.contextInitialized() throws exception, then Tomcat still starts (but without the servlet).
If ServletContextListener.contextInitialized(), the web application will
not start.
Servlets are not initialised until first used so they can't prevent an
application from starting. The one exception is Servlets configured for
"load on startup". Any failure of these servlets will cause the
application to fail to start.
> I found out that if servlet calls System.exit(1), then Tomcat dies. Is this the only way to make this happen?
> This does not work:
> -Dorg.apache.catalina.startup.EXIT_ON_INIT_FAILURE=true
You can try setting the (completely undocumented) throwOnFailure
attribute for the Context, Host, Engine, Service and Server.
The Context you can set in conf/context.xml so it applies to all web
applications.
Mark
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org