Prevent Dropwizard Database or Integration Tests running out of Connections, by removing abandoned connections not cleaned up by the test runner. Discovered by @leeAtTrunk and @nagliyvred

AbandonedConnectionsAwareDatasourceFactory.java

public class AbandonedConnectionsAwareDatasourceFactory extends DataSourceFactory {

    private int removeAbandonedTimeout = 60;
    private boolean removeAbandoned = false;

    @Override
    public ManagedDataSource build(MetricRegistry metricRegistry, String name) {
        ManagedPooledDataSource build = (ManagedPooledDataSource) super.build(metricRegistry, name);
        build.setRemoveAbandonedTimeout(removeAbandonedTimeout);
        build.setRemoveAbandoned(removeAbandoned);
        return build;
    }

    public int getRemoveAbandonedTimeout() {
        return removeAbandonedTimeout;
    }

    public void setRemoveAbandonedTimeout(int removeAbandonedTimeout) {
        this.removeAbandonedTimeout = removeAbandonedTimeout;
    }

    public boolean isRemoveAbandoned() {
        return removeAbandoned;
    }

    public void setRemoveAbandoned(boolean removeAbandoned) {
        this.removeAbandoned = removeAbandoned;
    }

}

dropwizard-test-config.yml

dataSource:
  abandonWhenPercentageFull: 9
  removeAbandonedTimeout: 2
  removeAbandoned: true