This change adds a Fixture class for use by gradle. A Fixture is an
external process that integration tests will use. It can be added as a
dependsOn for integTest, and will automatically be shutdown upon success
or failure, as well as relevant information dumped on failure. There is
also an example fixture in this change.
We currently use the full suite of packaged rest tests for each
distribution. We also used to run rest tests within core integ tests,
but this stopped working when we split out the test-framework, since the
test files are in there.
This change simplifies the code to run packaged rest tests just once,
for the integ-test-zip, and removes the unused rest tests from
test-framework. Distributions rest tests now check that all modules
were loaded.
The current mechanism for adding plugins to the integTest cluster is to
have a FileCollection. This works well for the integTests for a single
plugin, which automatically adds itself to be installed. However, for qa
tests where many plugins may be installed, and from other projects, it
is cumbersome to add configurations, dependencies and dependsOn
statements over and over. This simplifies installing a plugin from
another project by moving this common setup into the cluster
configuration code.
Many other improvements:
* Use spaces in ES path
* Use space in path for plugin file installation
* Use a different cwd than ES home
* Use jps to ensure process being stopped is actually elasticsearch
* Stop ES if pid file already exists
* Delete pid file when successfully killed
Also, refactored the cluster formation code to be a little more organized.
closes#14464
Ryan Ernst
Robert Muir