Previously, the targetJavaVersion property of bootBuildImage was set
using the project's target compatibility directly. This meant that
property's value would reflect the configured target compatibility at
the time of the task's creation and any subsequent changes to the
target compatibility would be missed.
This commit updates the registration of the bootBuildImage task to set
the value of the targetJavaVersion property using a provider. This
indirection means that the project's target compatibility isn't read
until the value of the targetJavaVersion is read, allowing any changes
to the target compatibility to be picked up even if they're made after
the bootBuildImage task has been created.
Fixes gh-26297
This commit modifies the integration tests for the Maven and Gradle
image building goal and task to use a custom builder as a test harness
to verify that the plugins invoke the builder as expected.
Fixes gh-25838
Update `build.gradle` files to ensure that `junit-platform-launcher` is
a `testRuntimeOnly` dependency. This ensures that tests can be run from
Eclipse.
Closes gh-25074
Previously, unlike the application plugin's run task, our bootRun task
ignored the project's Java toolchain. This meant that the application
was run on a JVM with the same Java version as the one being used by
Gradle itself. This could result in a failure if the application
required a more modern JVM.
This commit updates the plugin to configure the bootRun task's
JavaLauncher convention to be one derived from the project's Java
toolchain. Toolchain support was introduced in Gradle 6.7 so this is
only done when using Gradle 6.7 and later.
Fixes gh-24517
Previously, bootRun assumed that the Java version of the JVM that would
run the application would be the same as the Java version of the JVM
that is running the build. This assumption does not hold true when
Gradle's toolchain support is used to configure tasks that fork a new
JVM to use a version other than that being used by Gradle itself.
This commit updates the BootRun task to query the JavaLauncher property
when determining the version of Java on which the application will be
run. Toolchain support and the JavaLauncher property are new in Gradle
6.7. To support earlier versions of Gradle, NoSuchMethodError is caught
we continue as if no JavaLauncher has been configured and use the local
JVM's Java version.
Fixes gh-24512
Prior to this commit, running the bootBuildImage Gradle task on a
project configured for war packaging would result in a jar file being
built and used in the image instead of the war file. With this commit
an error will be thrown from the plugin in this case.
Fixes gh-24521
This commit qualifies examples of configuring the CNB builder to clarify
that the examples apply to use of the default Paketo builder, and adds links
to the official Paketo docs for more details.
Fixes gh-19967
