# Common

This bundle contains things shared by all components (BHive, DCU, PCU, Minion, ...).

# SecurityHelper

The io.bdeploy.common.security package contains the SecurityHelper which can be used to generate and verify keystores and access tokens for remote APIs (over HTTP).

# Configuration

The io.bdeploy.common.cfg package contains the Configuration class which can be used to create command line tools and map their parameters to annotation proxies.

# ActivityReporter

The ActivityReporter implementations (Stream and Null) can be used to track activities/operations.

# Metrics

The io.bdeploy.common.metrics package contains an entry point to allow measurement of various metrics.

# Troubleshooting

1. The JUnit5 @RegisterExtension annotation allows to register instances of extensions (as opposed to @ExtendWith, which registers a class and manages it's lifecycle as appropriate). This means that the instance does not get changed. This on the other hand means that the instance fields of this extension will keep their state throughout test methods. This is not dramatic, just something you need to be aware of. This is the reason why TestMinion calls resetRegistrations() in it's beforeEach method. Not doing so led to duplicate registrations of singleton services, where the server picked up the services for another test later on...