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
Previously, if an exception was resolved by a `HandlerExceptionResolver`
nothing the log indicated a failure to process the query.
This commit adds a new property `spring.mvc.log-resolved-exception` that
enables warning logs for supported `HandlerExceptionResolver` instances.
When Devtools is enabled, this flag is enabled by default.
Closes gh-2176
The upgrade to Hibernate 5.2.0.Final has provide to be too
problematic to live with. It requires Java 8, is incompatible with
a number of other projects in the Hibernate ecosystem, and it's
unclear for how long it will be maintained. We'd previously used
Hibernate 5.1.0.Final but its maintenance is also unclear with
Hibernate 5.1.1.Final being more than 3 months overdue.
This commit drops back to Hibernate 5.0.9.Final. This has a few
advantages:
- It's Java 7 compatible
- It's had some time to mature and should be reasonably free of
regressions for those moving from 4.3.x
- It's used in both Wildfly and JBoss EAP so there's a fair chance
that it will continue to be maintained.
Closes gh-6198
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
DevTools deliberately throws an uncaught exception on the main thread
as a safe way of causing it to stop processing. This exception is
caught and swallowed by an uncaught exception handler. Unfortunately,
this has the unwanted side-effect of causing the JVM to exit with 1
once all running threads are daemons.
Normally, this isn't a problem. Non-daemon threads, such as those
started by an embedded servlet container, will keep the JVM alive and
restarts of the application context will occur when the user makes to
their application. However, if the user adds DevTools to an
application that doesn't start any non-daemon threads, i.e. it starts,
runs, and then exits, it will exit with 1. This causes both
bootRun in Gradle and spring-boot:run in Maven to report that the
build has failed. While there's no benefit to using DevTools with an
application that behaves in this way, the side-effect of causing the
JVM to exit with 1 is unwanted.
This commit address the problem by updating the uncaught exception
handler to call System.exit(0) if the JVM is going to exit as a
result of the uncaught exception causing the main thread to die. In
other words, if the main thread was the only non-daemon thread, its
death as a result of the uncaught exception will now cause the JVM
to exit with 1 rather than 0. If there are other non-daemon threads
that will keep the JVM alive, the behaviour is unchanged.
Closes gh-5968
Previously, Spring Data Redis assumed that the class loader that loaded
its classes would also be able to load the application’s classes. This
assumption is faulty when there are multiple class loaders involved
such as when using dev tools or when Spring Data Redis is installed as
a shared library in a servlet container.
DATAREDIS-427 and DATAREDIS-501 removed this assumption by making the
default serialiser use the bean class loader. DevTools configures this
class loader to be the restart class loader which can load the
application’s classes. As a result of moving to Hopper SR2 snapshots,
these fixes are now available and we can remove our custom serialised.
Closes gh-5760
- Limit shared state between FileSystemWatcher and the watching thread
- Use a private monitor rather than synchronizing on this
- Use a Runnable implementation rather than subclassing Thread
- Synchronize consistently when reading and writing state
Closes gh-6039
Extract TemplateAvailabilityProvider caching logic to a new
TemplateAvailabilityProviders class and provide property support to
disable it. Also update DevToolsPropertyDefaultsPostProcessor to
automatically set the property.
Fixes gh-5989
The list of changes is written to on one thread and read from on
another. Without some form of sychronization this is not thread-safe.
This commit makes changes a synchronized list which should guarantee
that the reading thread can see the changes made by the writing thread.
It also removes a redundant call to clear the list of changes at the
start of waitsForPollingInterval.
See gh-6038
Previously, there were two problems with DevTools’ DataSource
auto-configuration:
1. It did not tolerate a context with multiple DataSources
2. It would attempt to shut down a DataSource that had not been created
by DataSourceAutoConfiguration and, therefore, where we could not be
sure of its configuration.
This commit updates DevToolsDataSourceAutoConfiguration so that it backs
off unless the context contains DataSourceProperties and a single
DataSource created by DataSourceAutoConfiguration. This ensures that it
can safely use DataSourceProperties to get the DataSource’s
driver class name and accurately determine if it’s an in-memory or
external database. Shutdown is only called for an in-memory database.
Closes gh-5540
5e0ba6ea added support for reading a jar manifest's Class-Path
attribute when resolving changeable URLs from a URLClassLoader,
however it did not handle relative URLs, i.e. URLs without a protocol,
correctly.
This commit updates ChangeableUrls so that it uses the URL of the
JAR that contains the manifest as the base for any new URLs that
are created. When the Class-Path entry is relative, this base will
be used. When the Class-Path entry is absolutee, URL's constructor
will ignore the supplied base.
Closes gh-5665
To overcome command length limits on Windows, IntelliJ IDEA may launch
an application with a single jar on the classpath that contains that
application's actual classpath in the Class-Path attribute of its
manifest. This would prevent DevTools restarts from working as it
only considered the single jar's URL when identifying changeable URLs
and ignored the URLs added to the classpath via the jar's manifest.
This commit updates ChangeableUrls when it is created from a
URLClassLoader to consider the Class-Path manifest attribute of any
jars in the class loader's URLs. This allows the full classpath to
be considered when identifying URLs that are changeable and that
need to be monitored for restart triggering.
Closes gh-5127
