Re: [Dev] API Calls fail while UserStoreConfigurationDeployer is running

Mon, 03 Apr 2017 06:50:34 -0700

Hi,
i was able to reproduce the error. 
Fist i wait till the unloading (log shows: Cleaned up tenant <tenant name>)
Then i fire two request at the same time. The first request starts the deployment:
Creating tenant AxisConfiguration for tenant: <tenant name>
User Store Configuration Deployer initiated.
 
The second request runs into the error:
The service cannot be found for the endpoint reference (EPR) local://axis2services/MyAPI/1.0/somePath {org.apache.axis2.engine.AxisEngine}
org.apache.axis2.AxisFault: The service cannot be found for the endpoint reference (EPR) local://axis2services/MyAPI/1.0/somePath
 
The first request is answered fine. The second contains the stacktrace of the exception.
 
It seems that WSO2 1.8 does not have the tenant loading policy options, so i think i have to wait till we switch to WSO2 2.1.
 
Thanks anyway
regAW
Gesendet: Montag, 03. April 2017 um 10:35 Uhr
Von: "KasunG Gajasinghe" <[email protected]>
An: [email protected]
Cc: "Omindu Rathnaweera" <[email protected]>, DEV <[email protected]>
Betreff: Re: [Dev] API Calls fail while UserStoreConfigurationDeployer is running
 
Tenants get unloaded after 30mins of inactivity. In that case, tenants get unloaded and re-loaded. 
 
You can configure that through carbon.xml. You can either increase the tenant idle time of the default tenant lazy loading policy, or you can switch to tenant eager loading. See Tenant/LoadingPolicy under carbon.xml.
 
The subsequent requests wait until the tenant gets loaded, and they also should get served fine. Are you able to correlate the API call failing and the userstore deploying?
One way to do that is by comparing the time of the userstore deployment log vs. the http access logs around the same time.
 
 
On Mon, Apr 3, 2017 at 1:24 PM, <[email protected]> wrote:
Hi,
i've tested to change the DeploymentUpdateInterval in a test environment to 86400, so one day. But the line 
"User Store Configuration Deployer initiated." still appears more than once a day. I think the unloading may be the problem, like Omindu said. What happens if the tenant was unloaded and the first request starts the redeployment and during that a second request comes in? Could that lead to this error?
How long is the idle time before unloading and can it be configured?
It's kind of hard to test cause the redeployment takes less than a second.
 
Regards,
regAW
Gesendet: Dienstag, 28. März 2017 um 21:13 Uhr
Von: "Omindu Rathnaweera" <[email protected]>
An: "KasunG Gajasinghe" <[email protected]>
Cc: [email protected], DEV <[email protected]>
Betreff: Re: [Dev] API Calls fail while UserStoreConfigurationDeployer is running
@KasunG The deployers can run during tenant loading, correct? Say the tenant got unloaded after the idle time, the next request to that tenant's resource will re deploy the tenant's user stores, services etc. In that case, will changing deployment update interval be effective ? 
 
Regards,
Omindu
 
On Tue, Mar 28, 2017 at 4:06 PM, KasunG Gajasinghe <[email protected]> wrote:
 
You can reduce the deployment update interval via carbon.xml. By default, it is 15mins. Search for DeploymentUpdateInterval. You can increase this.
 
That being said, the deployers won't be called unless you modify userstore.  
 
On Mon, Mar 27, 2017 at 2:32 PM, <[email protected]> wrote:
Hi,
i have a problem with my WSO2-am. The UserStoreConfigurationDeployer is running up to 20 times per day. During that time alle request to the api return a 500 http error. The backend is not called.
I created a question on stackoverflow ( http://stackoverflow.com/questions/42859483/the-service-cannot-be-found-for-the-endpoint-reference-while-user-store-configur ) but no answers so far. 
Can someone have a look at this or at least can confirm that it will not happen under 2.1?
 
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Kasun Gajasinghe
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email: kasung AT spamfree wso2.com
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--
Omindu Rathnaweera
Senior Software Engineer, WSO2 Inc.
 
 
--
Kasun Gajasinghe
Associate Technical Lead, WSO2 Inc.
email: kasung AT spamfree wso2.com
linked-in: http://lk.linkedin.com/in/gajasinghe
blog: http://kasunbg.org
phone: +1 650-745-4499, 77 678 0813 
 
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