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
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
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
Ensure any ChildManagementContext created to start a management server
on a different port uses the same EmbeddedServletContainerFactory type.
Fixes gh-5474
Previously, if endpoints.enabled was false setting
endpoints.docs.enabled=true or endpoints.actuator.enabled=true would
have no effect as their entire configuration class was conditional
on endpoints.enabled being true.
This commit updates the conditions on the configuration class so that
it is conditional on either the actuator or docs endpoint being enabled.
Closes gh-5007
Plugin disabling logic was broken by e009d3e4. Prior to this change,
a plugin would be disabled if it or any of the implemented interfaces
in its inheritance hierarchy were configured as being disabled. The
offending commit inverted the logic so that the plugin would be
enabled if any part of it was NOT configured as being disabled.
This commit restores the logic such that the early return happens only
in the negative case.
Previously, the tests were written as though
PluginContext#getPlugin(Class) would consider the specified class
against the runtime type of the plugin (not an unreasonable
assumption); rather this method considers the broader 'plugin type'.
This commit rewrites the test to seek by plugin type and assert the
absence of the disabled plugins.
Closes gh-5032
Support for configuring an endpoint’s path separately from its id was
introduced in 97255785, but it didn’t work for a variety of reasons:
1. Some custom MVC endpoints did not have configuration properties
bound to them
2. Some generic endpoints rejected the path property as they were
configured not to ignore unknown fields
3. The property used to configure the path was dependent on the id
of the endpoint. This meant that the path property’s name would
change if the endpoint’s id was changed
This commit addresses these problems:
1. @ConfigurationProperties has been added to custom MvcEndpoints where
it was missing
2. Generic endpoints have been updated to ignore unknown fields,
allowing the path of their MVC adapter to be configured
3. Rather than using the id of a generic endpoint to determine the name
of its path property, the prefix or value of the endpoint’s
@ConfigurationProperties annotation is used instead. Any generic
endpoint that is not annotated with @ConfigurationProperties is
ignored, making its path unconfigurable.
Closes gh-5105
The Jolokia auto-configuration requires ServletWrappingController from
Spring MVC to be on the classpath. This commit updates the
auto-configuration to make it conditional on the presence of this
class.
Closes gh-5153
Previously, WebRequestTraceFilter would call request.getParameterMap()
before deciding whether or not the parameters should be included in
the trace. For a POST request, this had the unwanted side-effect
of always reading the request body.
This commit updates WebRequestTraceFilter so that it checks that
parameters are to be included in the trace before calling
request.getParameterMap()
Closes gh-5089
Spring Boot’s metrics require all values to be Numbers. A Dropwizard
Gauge can have a non-Number value. Previously, to prevent this causing
a problem, MetricRegistryMetricReader would check the value of a Gauge
when it’s being added and ignore it if it had a non-Number value.
Unfortunately, retrieving the value of a Gauge can take a non-trivial
amount of time (hence CachedGauge) so this approach, while functional,
could be improved.
This commit updates the filtering to happen when a Metric is being
retrieved from MetricRegistryMetricReader (via findOne or findAll)
when its value is required anyway. At this point, any Gauge with a
non-Number value is ignored.
Closes gh-4874
Previously, HalJsonMvcEndpoint used a redirect to go from path/ to path.
When the actuator’s configured to use a custom context path this
redirect was leading to an infinite redirect loop.
This commit removes the redirect in favour of updating the controller
advice to apply the links to requests for path and path/.
Closes gh-4853
This commit completes the changes to consistently used static final
fields for Log instances that were started in ec2f33f9. Specifically it:
- Removes this. when accessing logger fields that are now static
- Renames some fields from log to logger
- Makes some logger fields static
See gh-4784
Ensure that Collections.isEmpty() is used to check if there are no
elements in a collections. This is more explicit and can be faster than
calling .size().
Closes gh-4783
If the user provides their own ServerProperties bean we want to peek
at it to see if they set the port (and only that) when we are deciding
if the actuator context needs to be created. This happens very early
(in a @Condition) so we need to be very defensive. There are already
quite a few checks in place to prevent a ServerProperties bean from
being instantiated unless we really need it, and yet, when it is
we can do more.
This change creates the bean (and the ManagementProperties) in a
throwaway BeanFactory using the same BeanDefinition as the main
context. This ensures that when the main context bean is created
it will be in the "natural" order and binding to the Environment
can take place as normal.
Fixes gh-4631
This change permanently removes links from the endpoints that return
arrays or collections, and also disables them in the rest of the
endpoints (except /actuator) by default.
Fixes gh-4616
Previously, the default RestTemplate that is used OpenTsdbGaugeWriter
was not used with its default configuration. Notably this meant that
it would have infinite connect and read timeouts. This is problematic
as it can cause metric writing to hang and block the scheduler for
performing any other tasks.
This commit updates OpenTsdbGaugeWriter to use a default connect
timeout of 10 seconds and a default read timeout of 30 seconds. A
constructor has been added to ease the configuration of these
timeouts. The existing option of providing your own RestTemplate
(via setRestTemplate) remains.
Closes gh-4698
Add a `server.server-header` property which can be used to override the
`server` header usually sent back automatically by Tomcat/Jetty or
Undertow.
See https://www.owasp.org/index.php/Securing_tomcat for background.
Fixes gh-4461
Closes gh-4504
Andy Wilkinson
Phillip Webb
Stephane Nicoll
Johannes Edmeier
Spring Buildmaster
Dave Syer
Vedran Pavic
Matt Benson
mkwaczynski
Eddú Meléndez
mnhock
Johnny Lim
Kirill Vlasov