def start_resourcemanager()

in bigtop-packages/src/charm/hadoop/layer-hadoop-resourcemanager/reactive/resourcemanager.py [0:0]

• 18 lines of code
• 7 McCabe index (conditional complexity)

def start_resourcemanager(namenode):
    hookenv.status_set('maintenance', 'starting resourcemanager')
    # NB: service should be started by install, but we want to verify it is
    # running before we set the .started state and open ports. We always
    # restart here, which may seem heavy-handed. However, restart works
    # whether the service is currently started or stopped. It also ensures the
    # service is using the most current config.
    rm_started = host.service_restart('hadoop-yarn-resourcemanager')
    if rm_started:
        for port in get_layer_opts().exposed_ports('resourcemanager'):
            hookenv.open_port(port)
        set_state('apache-bigtop-resourcemanager.started')
        hookenv.status_set('maintenance', 'resourcemanager started')
        hookenv.application_version_set(get_hadoop_version())
    else:
        hookenv.log('YARN ResourceManager failed to start')
        hookenv.status_set('blocked', 'resourcemanager failed to start')
        remove_state('apache-bigtop-resourcemanager.started')
        for port in get_layer_opts().exposed_ports('resourcemanager'):
            hookenv.close_port(port)

    hs_started = host.service_restart('hadoop-mapreduce-historyserver')
    if not hs_started:
        hookenv.log('YARN HistoryServer failed to start')