wu-sheng opened a new pull request, #9828:
URL: https://github.com/apache/skywalking/pull/9828
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The root cause of this change is when I want to extend an existing module
provider to another, but need to add new configurations. In the previous
implementations, most providers have to hold a field/pointer to the
configuration, in order to use it in `init`/`start`/... stages. This should be
fine until we want to extend and add a new configuration, a new configuration
class could inherit from the existing config, but the new provider can't
inherit the existing provider, because you can't inject the extended config to
replace the config instance created and hold in the old provider.
Through this new creator interface, the new provider could intercept the
config type, and return a new one, and notify the old provider with the new
initialized config.
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