ConcurrentHashMap implements `containsKey` with `get`. By removing a
redundant call to `containsKey`, we guarantee better performance in our
counter services.
The geek inside measured this with JMH, and found under 4 threads of
contention, throughput on this check was 40% higher in success case.
Benchmark Mode Cnt Score Error Units
TestBenchmarks.containsKeyAndGet_success thrpt 30 432.389 ± 20.616 ops/us
TestBenchmarks.get_success thrpt 30 606.789 ± 10.848 ops/us
Closes gh-6379
Previously, the shutdown endpoint would spawn a new thread to perform
the shutdown but did not explicitly configure its thread context
class loader (TCCL). This mean that the new thread would use the
request thread's TCCL as its TCCL. This meant that a different TCCL
would be used compared to a shutdown triggered by the shutdown hook
and also caused problems with Tomcat's thread leak detection logic.
This commit updates the shutdown endpoint to explicitly configure the
TCCL of the shutdown thread to be the ClassLoader that loaded the
endpoint's class.
Closes gh-6361
Previously, the shutdown endpoint would spawn a new thread to perform
the shutdown but did not explicitly configure its thread context
class loader (TCCL). This mean that the new thread would use the
request thread's TCCL as its TCCL. This meant that a different TCCL
would be used compared to a shutdown triggered by the shutdown hook
and also caused problems with Tomcat's thread leak detection logic.
This commit updates the shutdown endpoint to explicitly configure the
TCCL of the shutdown thread to be the ClassLoader that loaded the
endpoint's class.
Closes gh-6361
Update WebRequestTraceFilter so that additional post processing can be
applied to traced request headers. The postProcessRequestHeaders method
can be used to remove or change map entries before they are returned.
Fixes gh-6309
Where possible, code that previously synchronized on this (or on the
class in the case of static methods) has been updated to use an
internal monitor object instead. This allows the locking model that's
employed to be an implementation detail rather than part of the
class's API.
Classes that override a synchronized method continue to declare
the overriding method as synchronized. This ensures that locking
is consistent across the superclass and its subclass.
Closes gh-6262
This commit polishes b0fbc7e, throwing an exception when an attempt is
made to configure management-specific SSL without also configuring a
custom management port. The testing of management-specific SSL
configuration has also been improved.
See gh-6057
Closes gh-4810
Move Neo4J auto-configuration from `autoconfigure.neo4j` to
`autoconfigure.data.neo4j` since it's intrinsically linked to Spring
Data.
See gh-5458
See gh-6142
When a custom management.port is used, the child context is configured
with an EmbeddedServletContainerFactory bean that has the same class
as the parent context’s EmbeddedServletContainerFactory bean. This
ensures that the child context uses the same type of embedded container
as its parent when there are multiple embedded containers on the
classpath. It also causes a failure when the custom
EmbeddedServletContainerFactory subclass cannot be instantiated, for
example because it’s an anonymous inner-class.
This commit improves the diagnostics so that we fail fast with an
information exception message when we detect that the embedded servlet
container factory bean’s class cannot be instantiated.
Closes gh-6193
This commit changes the default version of Tomcat to 8.5.3 while
also retaining support for Tomcat 8.0 and 7.0. The main difference
in 8.5 is that the ServerSocketFactory abstraction that allowed the
TrustStore and KeyStore to be configured programatically no longer
exists. This logic has been replaced with the use of a custom URL
protocol (springbootssl) that provides access to the key store and
trust store of an SslStoreProvider. In addition to working with 8.5,
this approach has the advantage of also working with 8.0 and 7.0.
Closes gh-6164
This commit adds `@AliasFor` meta-data to annotations that declare an
alias attribute.
`@ConditionalOnProperty` and `@AutoconfigureRestDocs` were not migrated
due to the use of `AnnotationMetadata#getAnnotationAttributes`.
Closes gh-5187
Previously, if the `contextPath` of the application wasn't the root, the
HAL browser could not initialize since the `entryPoint` was referring to
an invalid location.
This commit makes sure to take the `contextPath` into account.
Closes gh-5814
Previously, SimpleInMemoryRepository used a ConcurrentReferenceHashMap
to store its locks. The type of map will discard its entries when the
JVM comes under GC pressure. With the code in its previous form, this
could lead to a NullPointerException when the following occurred:
1. putIfAbsent returned null indicating that a new entry has been added
to the map
2. GC pressure caused the map to discard the new entry
3. get returned null as the entry has been discard
There are two problems with the existing code:
1. Its usage of a ConcurrentMap is incorrect. The correct usage is:
a. Call get to see if the map already contains a lock
b. If the lock is null, create a new one
c. Call putIfAbsent to add the new lock
d. If the return value is non-null, another thread has created the
lock and it should be used. If the return value is null, use the
new lock created in b.
2. Once the use of ConcurrentMap has been corrected, the fact that it is
a ConcurrentReferenceHashMap means that different threads could
access the same value using different locks. This would occur if one
thread has retrieved a lock from the map and is using it, while GC
causes the lock to be removed from the map. Another thread then
attempts to get the lock and, as GC pressure has remove it, a new
lock is created allowing concurrent access to the same value.
This commit updates the code to use the ConcurrentMap correctly and also
replaces the ConcurrentReferenceHashMap with a ConcurrentHashMap. This
means that the repository will now use slightly more memory but this is
outweighed by the benefits of thread-safe updates and no risk of an NPE.
Closes gh-6115
This commit adds a Jest-based health indicator for ElasticSearch. If both
Jest and the Spring Data are available, the latter takes precedence as it
provides more information.
Closes gh-3178
"Starter POM" is a confusing term as it implies the starter may be a
POM while it's actually a jar artifact like any other dependency. To
reduce the confusion (especially in the way such starter should be
declared in the build), the term Starter POM has been renamed to Starter.
Closes gh-5966
Update EndpointWebMvcAutoConfiguration so that ApplicationFailedEvents
cause the management context to close.
Prior to this commit if an application failed to start (for example
because `server.port` was already in use) the management context would
remain open and the application would not exit.
Fixes gh-5388
This commit improves the `InfoContributor` infrastructure as follows:
* `InfoEndpoint` no longer breaks its public API and returns a Map as
before
* `Info` is now immutable
* All properties of the build are now displayed. Since we control the
generation of that file, there is no longer a mode to restrict what's
shown
* Build info is now generated in `META-INF/build-info.properties` by
default
Closes gh-5734
Reorganize web related classes for better separation of concerns.
Mainly this involves moving classes from `o.s.b.context.embedded`
that aren't directly tied to embedded servlet containers to
`o.s.b.web` and relocating everything from `o.s.b.context.web`.
See gh-5822
Move the @LocalServerPort to org.springframework.boot.context.embedded
since it's only really useful when working with embedded servlet
containers.
See gh-5822
Add an additional property to LogFileMvcEndpoint to allow log files to
be read from an external location. This is helpful when a launch.script
is used to start the boot-application and the logfile is written by a
redirect of stdout/stderr.
Fixes gh-4255
Closes gh-4836
Extract ApplicationContextHeaderFilter to a top-level class from
EndpointWebMvcAutoConfiguration and make the header field public.
Fixes gh-5726
Closes gh-5784
Before this change the app context closes and metrics that have not
yet been exported ccan be orphaned. The design of this feature is simple:
use Closeable where possible, so that it will be called automatically
by Spring on shutdown.
Fixes gh-5771
The MetricCopyExporter has had the capability for a while to keep
track of counters internally. This change aligns that with the
PrefixMetricGroupExporter.
Fixes gh-5762
Previously, if the filter chain threw an unhandled exception,
WebRequestTraceFilter would record a trace with a response status of
200. This occurred because response.getStatus() would return 200 as
the container had not yet caught the exception and mapped it to an
error response.
This commit updates WebRequestTraceFilter to align its behaviour with
MetricsFilter. It now assumes that the response status will be a 500
and only updates that to the status of the response if the call to the
filter chain returns successfully.
To avoid making a breaking change to the signature of the protected
enhanceTrace method, an HttpServletResponseWrapper is used to include
the correct status in the trace.
Closes gh-5331
Flyway 4.0 provides support for repeatable migrations that do not
have a version. When such a migration has been performed,
MigrationInfo.getMigrationVersion() will return null and, previously,
FlywayEndpoint would fail with an NPE.
This commit updates FlywayEndpoint to use null as the version when
MigrationInfo.getMigrationVersion() returns null.
Closes gh-5700
This commit moves the `shell.auth` property to `shell.auth.type`. The
previous situation was unfortunate since `shell.auth` was both a group
and a particular property.
Closes gh-5139
Ensure any ChildManagementContext created to start a management server
on a different port uses the same EmbeddedServletContainerFactory type.
Fixes gh-5474
Add `endpoints.metrics.filter.gauge-submissions` and
`endpoints.metrics.filter.counter-submissions` properties which can be
used to fine-tune how MetricsFilter submits metrics.
Use `per-http-method` to group by the the HTTP method, `merged` to
combine or both (`merged,per-http-method`) to submit both in forms.
Closes gh-5102
Phillip Webb
Stephane Nicoll
RichardCSantana
Andy Wilkinson
Adrian Cole
Johnny Lim
Spring Buildmaster
Lari Hotari
Vedran Pavic
Venil Noronha
Alex Antonov
Johannes Edmeier
Ruben Dijkstra
Dave Syer
sebastiankirsch