ReactiveDataAccessStrategy has been deprecated in Spring Data R2BC in
favor of R2dbcConverter (and StatementMapper and UpdateMapper). When
not using Boot, an R2dbcConverter bean is now defined by
AbstractR2dbcConfiguration. This commit updates
R2dbcDataAutoConfiguration to replace the definition of a
ReactiveDataAccessStrategy bean with the definition of an
R2dbcConverter bean.
See gh-23197
Prior to this commit, Spring Boot would auto-configure both
Elasticsearch variants: `RestClient` ("Low Level" client) and
`RestHighLevelClient` ("High Level" client).
Since one can be derived from the other, this would create complex and
unclear situations depending on what developers provided with their
configuration.
`RestHighLevelClient` is mostly for actual use of the Elasticsearch API,
with support for specific methods and (de)serialization. On the other
hand, `RestClient` is merely wrapping the Apache HTTP client for
load-balancing support and low level HTTP features.
This commit completely removes the support for `RestClient` in Spring
Boot and now requires the presence of the
`org.elasticsearch.client:elasticsearch-rest-high-level-client`
dependency for REST client support with Elasticsearch.
Closes gh-22358
This commit builds on top of gh-22603 and exposes data collected by the
`BufferingApplicationStartup` on a dedicated `"/startup"` Actuator
endpoint.
Closes gh-23213
As of spring-projects/spring-framework#24878, Spring Framework provides
an `ApplicationStartup` infrastructure that applications can use to
collect and track events during the application startup phase.
This commit adds a new `BufferingApplicationStartup` implementation that
buffer `StartupStep`s and tracks their execution time. Once buffered,
these steps can be pushed to an external metrics system or drained
through a web endpoint, to a file...
Closes gh-22603
Andy Wilkinson
Stephane Nicoll
Brian Clozel
Spencer Gibb