Add support for logging correlation IDs with Logback or Log4J2 whenever
Micrometer tracing is being used.
The `LoggingSystemProperties` class now accepts a defualt value resolver
which will be used whenever a value isn't in the environment. The
`AbstractLoggingSystem` provides a resolver that supports the
`logging.pattern.correlation` property and will return a value whenever
`LoggingSystem.EXPECT_CORRELATION_ID_PROPERTY` is set.
Using `LoggingSystem.EXPECT_CORRELATION_ID_PROPERTY` allows us to
provide a consistent width for the correlation ID, even when it's
missing from the MDC.
The exact correlation pattern returned will depend on the `LoggingSytem`
implementation. Currently Logback and Log4J2 are supported and both
make use of a custom converter which delegates to a new
`CorrelationIdFormatter` class.
Closes gh-33280
@ConditionalOnEnabledTracing is now applied to the minimal amount of
beans. The beans which are annotated with it are beans that will lead
to span sending to backends.
This leaves the majority of the Micrometer Tracing, Brave and
OpenTelemetry infrastructure untouched in tests.
Closes gh-35354
Most notably, this commit splits the tests that use Spring REST Docs
out into a separate task for which predictive test selection is
disabled. This allows it to be cached and use Gradle's built-in
up-to-date checking, thereby avoiding the generation of new snippets
and the need to then run the asciidoctor and asciidoctorPdf tasks.
It also updates spring-boot-smoke-test-junit-vintage to disable
predictive test selection so that we can continue to assert that
the some tests were executed.
See gh-35869
Setting 'management.observations.spring-security.enabled' installs an
ObservationPredicate, which prevents all observations starting with
'spring.security.' to be created.
Closes gh-34802
Johnny Lim
Ahmed Ashour
Moritz Halbritter
Andy Wilkinson
ThomazPassarelli
Jonatan Ivanov
Phillip Webb
Bernardo Bulgarelli