This plugin is built with Buck.
Issue this commands to build the plugin inside the Gerrit's source tree:
git clone https://gerrit.googlesource.com/gerrit cd gerrit git submodule init git submodule update git clone https://gerrit.googlesource.com/plugins/cloud-notifications plugins/cloud-notifications bazel build plugins/cloud-notifications
The output is created in
bazel-genfiles/plugins/cloud-notifications/cloud-notifications.jar
Check out the Gerrit Plugin API documentation