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https://issues.apache.org/jira/browse/SLING-4026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14179779#comment-14179779
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JBodkin commented on SLING-4026:
--------------------------------
I've uploaded a bundle to the ticket so you can verify with this. The steps
I've performed are as follows
# Open Felix System Console
# Upload bundle with Start Bundle checked
# Validate the logs to ensure "Successful adaptTo PathModel" was printed
# Re-upload bundle with start bundle unchecked
# Validate the logs to ensure "Successful adaptTo PathModel" was printed -
{color:red}Failure{color}
Log Output:
{code}
22.10.2014 10:57:25.066 *INFO* [Background Install
C:\Users\jbodkin\AppData\Local\Temp\install8464041485950987376.tmp]
com.lonelystorm.sling.racer BundleEvent INSTALLED
22.10.2014 10:57:25.072 *INFO* [Background Install
C:\Users\jbodkin\AppData\Local\Temp\install8464041485950987376.tmp]
com.lonelystorm.sling.racer BundleEvent RESOLVED
22.10.2014 10:57:25.072 *INFO* [Background Install
C:\Users\jbodkin\AppData\Local\Temp\install8464041485950987376.tmp]
com.lonelystorm.sling.racer BundleEvent STARTING
22.10.2014 10:57:25.137 *INFO* [Background Install
C:\Users\jbodkin\AppData\Local\Temp\install8464041485950987376.tmp]
org.apache.sling.models.impl Service [2933] ServiceEvent REGISTERED
22.10.2014 10:57:25.140 *ERROR* [Background Install
C:\Users\jbodkin\AppData\Local\Temp\install8464041485950987376.tmp]
com.lonelystorm.sling.racer.components.ImmediateComponent
ImmediateComponent::bindPathAdapter
22.10.2014 10:57:25.141 *ERROR* [Background Install
C:\Users\jbodkin\AppData\Local\Temp\install8464041485950987376.tmp]
com.lonelystorm.sling.racer.components.ImmediateComponent
ImmediateComponent::Activate
22.10.2014 10:57:25.143 *ERROR* [Background Install
C:\Users\jbodkin\AppData\Local\Temp\install8464041485950987376.tmp]
com.lonelystorm.sling.racer.components.ImmediateComponent Successful adaptTo
PathModel
22.10.2014 10:57:25.144 *INFO* [Background Install
C:\Users\jbodkin\AppData\Local\Temp\install8464041485950987376.tmp]
com.lonelystorm.sling.racer BundleEvent STARTED
22.10.2014 10:57:48.569 *ERROR* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer.components.ImmediateComponent
ImmediateComponent::unbindPathAdapter
22.10.2014 10:57:48.570 *INFO* [Background Update com.lonelystorm.sling.racer
(442)] org.apache.sling.models.impl Service [2934] ServiceEvent UNREGISTERING
22.10.2014 10:57:48.573 *INFO* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer BundleEvent STOPPING
22.10.2014 10:57:48.574 *INFO* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer BundleEvent STOPPED
22.10.2014 10:57:48.584 *INFO* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer BundleEvent UNRESOLVED
22.10.2014 10:57:48.584 *INFO* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer BundleEvent UPDATED
22.10.2014 10:57:48.635 *INFO* [FelixDispatchQueue] org.apache.felix.framework
FrameworkEvent PACKAGES REFRESHED
22.10.2014 10:57:48.638 *INFO* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer BundleEvent RESOLVED
22.10.2014 10:57:48.638 *INFO* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer BundleEvent STARTING
22.10.2014 10:57:48.830 *ERROR* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer.components.ImmediateComponent
ImmediateComponent::bindPathAdapter
22.10.2014 10:57:48.830 *ERROR* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer.components.ImmediateComponent
ImmediateComponent::Activate
22.10.2014 10:57:48.831 *ERROR* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer.components.ImmediateComponent Failure
adaptTo PathModel
22.10.2014 10:57:48.831 *INFO* [Background Update com.lonelystorm.sling.racer
(442)] org.apache.sling.models.impl Service [2935] ServiceEvent REGISTERED
22.10.2014 10:57:48.832 *INFO* [Background Update com.lonelystorm.sling.racer
(442)] com.lonelystorm.sling.racer BundleEvent STARTED
{code}
> Sling Models Race Condition
> ---------------------------
>
> Key: SLING-4026
> URL: https://issues.apache.org/jira/browse/SLING-4026
> Project: Sling
> Issue Type: Bug
> Components: Extensions
> Affects Versions: Sling Models Implementation 1.1.0
> Reporter: JBodkin
> Labels: models
> Attachments: racer.zip
>
>
> During initialization of a bundle, it is possible to encounter a race
> condition in which the BundleTrackerCustomizer::addingBundle(Bundle bundle,
> BundleEvent event) is triggered after the bundle has begun initialization of
> a immediate component.
> {code:java}
> @Component(immediate = true)
> @Service
> public class ExampleImpl {
> @Activate
> public void activate(ComponentContext context) {
> Resource resource = ....
> // Race condition possible here... Could be executed before the
> BundleTracker (ModelPackageBundleListener)
> SlingModelExample example = resource.adaptTo(SlingModelExample);
> }
> }
> {code}
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