rework frappy to be a device instead of a command

+ improve proposed config mechanism

commands.py

@@ -29,83 +29,6 @@ from servicemanager import FrappyManager, SeaManager
 SERVICES = FrappyManager.services
 
 
-def all_info(all_cfg, prefix='currently configured: '):
-    info = []
-    addkwd = False
-    for srv in SERVICES:
-        cfginfo = all_cfg.get(srv)
-        if cfginfo is None:
-            addkwd = True
-        elif addkwd:
-            info.append('%s=%r' % (srv, cfginfo))
-        else:
-            info.append(repr(cfginfo))
-    return f"{prefix}frappy({', '.join(info)})"
-
-
-def frappy_start(**services):
-    """start/stop  frappy servers
-
-    for example: frappy_start(main='xy', stick='')
-    - restart main server with cfg='xy'
-    - stop stick server
-    - do not touch addons server
-
-    in addition, if a newly given cfg is already used on a running server,
-    this cfg is removed from the server (remark: cfg might be a comma separated list)
-    """
-    frappy_config = session.devices.get('frappy_config')
-    for service in SERVICES:
-        if services.get(service) == '':
-            seaconn = session.devices.get(f'se_sea_{service}')
-            if seaconn and seaconn._attached_secnode:
-                seaconn.communicate('frappy_remove %s' % service)
-    used_cfg = {}
-    all_cfg = {}
-    new_cfg = []
-    remove_cfg = []
-    for service in reversed(SERVICES):
-        secnode = session.devices.get('se_' + service)
-        cfginfo = services.get(service)
-        if cfginfo is not None:
-            if cfginfo:
-                new_cfg.append((service, secnode, cfginfo))
-            else:
-                remove_cfg.append(secnode)
-            if secnode:
-                secnode('')
-        if secnode:
-            all_cfg[service] = secnode.get_info()
-
-        # check cfg is not used twice
-        for cfg in (cfginfo or '').split(','):
-            cfg = cfg.strip()
-            if cfg:
-                prev = used_cfg.get(cfg)
-                if prev:
-                    raise ValueError('%r can not be used in both %s and %s' % (cfg, prev, service))
-                used_cfg[cfg] = service
-
-    if new_cfg:
-        for service, secnode, cfginfo in new_cfg:
-            nodename = 'se_' + service
-            if not secnode:
-                AddSetup('frappy_' + service)
-                secnode = session.devices[nodename]
-            secnode(cfginfo)
-            all_cfg[service] = secnode.get_info()
-            CreateDevice(nodename)
-        cleanup_defunct()
-        CreateAllDevices()
-    if frappy_config:
-        frappy_config.set_envlist()
-    else:
-        applyAliasConfig()
-    for secnode in remove_cfg:
-        secnode.disable()
-    return all_cfg
-
-
 @usercommand
 def set_se_list():
     fc = get_frappy_config()