Update micrometer auto-configuration so that a `CompositeMeterRegistry`
is only created when more than one `MeterRegistry` bean is declared.
When a composite is crated, it is marked as `@Primary` so that it
can be directly injected. Meter registries can now be defined directly
as beans, and auto-configuration can back off in the usual way.
The `MeterRegistryConfigurer` is now called `MeterRegistryCustomizer`
and is generically types so it's easy to apply customizations to a
particular `MeterRegistry` implementation.
Fixes gh-11799
Co-authored-by: Jon Schneider <jschneider@pivotal.io>
By default, JUL configures a single root handler. That handler is a
ConsoleHandler. Previously, we removed all root handlers from JUL but
this is problematic in environments where other handlers are
registered with JUL and those handlers need to be retained.
0679d436 attempted to fix the problem by leaving the root handlers in
place and only adding and removing the bridge handler. This resulted
in log output from Tomcat (and anything else that uses JUL) being
duplicated.
This commit makes another attempt at tackling the problem. It attempts
to detect JUL's default configuration (a single root handler that's a
ConsoleHandler) and only removes the handler if it appears to be from
the default configuration. For environments where default JUL
configuration is being used, this will prevent duplicate logging and
for environments where custom JUL configuration is being used, this
will prevent that configuration from being undone.
Closes gh-8933
Previously, the test in MetricsAutoConfigurationIntegrationTests was
testing the functionality of WebMvcMetricsFilter to verify that the
auto-configuration had registered the filter for async dispatches.
This test was complex and covered the same code as a test in
WebMvcMetricsFilterTests.
This commit reworks the test to examine the dispatcher types on the
filter registration directly instead.
Closes gh-11826
