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https://issues.apache.org/jira/browse/SLING-6014?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arek Kita updated SLING-6014:
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Summary: [ServiceBlacklister] Allow to blacklist OSGi services given
generic criteria to prevent finding them in OSGi container (was:
[ServiceBlacklister] Allow to blacklist OSGi services given a generic criteria
to prevent finding them in OSGi container)
> [ServiceBlacklister] Allow to blacklist OSGi services given generic criteria
> to prevent finding them in OSGi container
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: SLING-6014
> URL: https://issues.apache.org/jira/browse/SLING-6014
> Project: Sling
> Issue Type: New Feature
> Components: Extensions
> Reporter: Arek Kita
>
> h3. Case study
> The OSGi container gives an ability for specific {{InterfaceAB}} to find a
> service that implements given interface. Sometimes more services might
> implement and satisfy this interface, i.e. {{ServiceA}} and {{ServiceB}}.
> Based on service ranking (if present) services are used in specific order.
> h3. The purpose
> The goal of service blacklister is to *exclude* i.e. {{ServiceB}} from
> finding in OSGi container so always {{ServiceA}} gets used no matter what
> service ranking is specified.
> h3. Typical use cases
> Imagine that {{ServiceB}} gets deprecated and it should be no longer used and
> referenced, however it is widespread and there is no easy way of identifying
> its bundle (multiple bundles or in other words bundles with different
> symbolic names may provide it) or it can be installed using many ways and for
> existing Sling instances there no easy way of disabling it by changing
> service ranking or uninstalling unknown bundle.
> The service blacklister idea accepts the fact that the service might live
> still in OSGi container but using a service-related (service-oriented)
> generic criteria and
> [FindHook|https://osgi.org/javadoc/r4v42/org/osgi/framework/hooks/service/FindHook.html]
> API the service might be excluded from OSGi service find operations which
> effectively prevents this service from being referenced.
> h3. The idea
> The idea would be to create a generic *{{ServiceBlacklister}}* OSGi component
> that allows to specify OSGi configurations through configuration factory
> defining a generic criteria (i.e. LDAP-like search query criteria) for
> blacklisting services.
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