When running an application, --local can be used to collect the
application's dependencies in a local directory. Prior to
AetherGrapeEngine being introduced, using --local would result in the
dependencies being written to ./grapes. When AetherGrapeEngine was
introduced --local no longer had any effect.
This commit updates AetherGrapeEngine so that it honours --local,
writing its dependencies to ./repository. When --local is not specified
dependencies are written to ~/.m2/repository (the standard location
for the local Maven cache). As part of this change TestCommand has
been refactored so that it lazily initialises its GroovyCompiler. This
ensures that RunCommand has a chance to set the system property that
backs --local before AetherGrapeEngine is initialised and accesses the
property.
Fixes#99
Previously, the Ivy-based Grape engine used a system property,
disableSpringSnapshotRepos, to control whether or not Spring's
snapshot and milestone repositories were used for dependency
resolution. This commit adds the same capability to AetherGrapeEngine.
[#59489826]
@Grab allows a dependency to be declared, but for its transitive
dependencies to be excluded by setting transitive to false. This
commit enhances AetherGrapeEngine to honour this setting by using a
wildcard exclusion on any dependency so declared.
Prior to this commit, the Aether-based GrapeEngine was loaded in the
same class loader as the rest of Boot. This led to Aether's and its
dependencies' types polluting the application's class path. Most
notably, this caused problems with logging as the logging framework
could be permaturely initialized.
This commit isolates AetherGrapeEngine, Aether and its dependencies
into a separate class loader. This is done by customizing the
packaging of the CLI's jar file with the internal directory housing
all of the types that will be loaded by the separate class loader.
Andy Wilkinson
Phillip Webb