@when('leadership.is_leader')
def add_leader_config():
    render_master_config()

@when_not('leadership.is_leader')
def add_slave_config():
    render_slave_config()


@when('leadership.changed')
@when('leadership.is_leader')
def change_leader():
    leader_set(hostname=hookenv.unit_private_ip())
    leader_set(public_ip=hookenv.unit_public_ip())
    leader_set(port=hookenv.config('carte_port'))
    leader_set(username='cluster')
    leader_set(password=hookenv.config('carte_password'))
    leader_set(init=True)
    render_master_config()
    restart(None)

@when('leadership.changed')
@when_not('leadership.is_leader')
def change_slave():
    render_slave_config()
    restart(None)


def render_slave_config():
    render('carte-config/slave.xml.j2', '/opt/data-integration/pwd/carte-config.xml', {
        'carteslaveport': hookenv.config('carte_port'),
        'carteslavehostname': hookenv.unit_private_ip(),
        'cartemasterhostname': leader_get('hostname'),
        'carteslavepassword': leader_get('password'),
        'cartemasterpassword': leader_get('password'),
        'cartemasterport': hookenv.config('carte_port')
    })


def render_master_config():
    render('carte-config/master.xml.j2', '/opt/data-integration/pwd/carte-config.xml', {
        'carteport': hookenv.config('carte_port'),
        'cartehostname': hookenv.unit_private_ip()
    })