admin.py

#! /usr/bin/python

#  Copyright 2014 Linaro Limited
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
#  MA 02110-1301, USA.
#
#  VLANd admin interface
#

import os, sys, types
import time
import logging
import optparse

vlandpath = os.path.abspath(os.path.normpath(os.path.dirname(sys.argv[0])))
sys.path.insert(0, vlandpath)

import drivers
from errors import CriticalError, InputError, ConfigError, SocketError
from db.db import VlanDB
from config.config import VlanConfig
from ipc.ipc import VlanIpc

version = "0.0.0-DEV"
banner = "Linaro VLANd admin interface, version %s" % version

def is_positive(text):
    if text in ('1', 'y', 'Y', 't', 'T', 'True'):
        return True
    elif text in ('0', 'n', 'N', 'f', 'F', 'False'):
        return False
    else:
        raise InputError("Cannot parse \"%s\" as True or False" % text)

def dump_switch(switch):
    print switch

def dump_port(port):
    print port

def dump_vlan(vlan):
    print vlan

def call_vland(msgtype, msg):
    ipc = VlanIpc()
    ipc.client_connect('localhost', config.vland.port)
    msg['client_name'] = 'admin.py'
    msg['type'] = msgtype
#    print 'Sending:'
#    print msg
    ipc.client_send(msg)
    ret = ipc.client_recv_and_close()
    if 'response' not in ret:
        raise SocketError("Badly-formed response from VLANd server")
    if ret['response'] == "ERROR":
        raise InputError("VLANd server said: %s" % ret['error'])
#    print 'VLANd said in reply:'
#    print ret
    return ret['data']

#print '%s' % banner

config = VlanConfig(filenames=('./vland.cfg',))

#print 'Connecting to DB...'
db = VlanDB()

# We need to know the vlan_id for the default vlan (tag 1). Make sure
# we know that before anybody attempts to create things that depend on
# it.
default_vlan_id = db.get_vlan_id_by_tag(config.vland.default_vlan_tag)
if default_vlan_id is None:
    raise ConfigError("No vlan ID found for default VLAN tag %d" % config.vland.default_vlan_tag)

usage = 'Usage: %prog --command [command options]'
parser = optparse.OptionParser(usage=usage, description=banner)

# System commands
system_group = optparse.OptionGroup(parser, "System commands")
system_group.add_option("--status",
                        dest="status",
                        action = "store_true",
                        default = False,
                        help = "Describe current system status")
parser.add_option_group(system_group)
# May add shutdown, self-check etc. later

# Switch commands
switch_group = optparse.OptionGroup(parser, "Switch commands")
switch_group.add_option("--list_all_switches",
                  dest = "list_all_switches",
                  action = "store_true",
                  default = False,
                  help = "List all the existing switches in the system")
switch_group.add_option("--create_switch",
                  dest = "create_switch",
                  action = "store",
                  type = "string",
                  help = "Add a new switch to the system",
                  nargs = 1,
                  metavar = "<name>")
switch_group.add_option("--delete_switch",
                  dest = "delete_switch",
                  action = "store",
                  type = "int",
                  help = "Remove an existing switch from the system",
                  default = None,
                  nargs = 1,
                  metavar = "<switch_id>")
switch_group.add_option("--show_switch",
                  dest = "show_switch",
                  action = "store",
                  type = "int",
                  help = "Show the details of an existing switch in the system",
                  default = None,
                  nargs = 1,
                  metavar = "<switch_id>")
switch_group.add_option("--lookup_switch_by_name",
                  dest = "lookup_switch_by_name",
                  action = "store",
                  type = "string",
                  help = "Lookup a switch ID by name",
                  nargs = 1,
                  metavar = "<name>")
switch_group.add_option("--list_switch_ports",
                  dest = "list_switch_ports",
                  action = "store",
                  type = "int",
                  help = "List the IDs of the ports on an existing switch in the system",
                  default = None,
                  nargs = 1,
                  metavar = "<switch_id>")
parser.add_option_group(switch_group)

# Port commands
port_group = optparse.OptionGroup(parser, "Port commands")
port_group.add_option("--list_all_ports",
                  dest = "list_all_ports",
                  action = "store_true",
                  default = False,
                  help = "List all the existing ports in the system")
port_group.add_option("--create_port",
                  dest = "create_port",
                  action = "store",
                  type = "string",
                  help = "Add a new port to the system",
                  nargs = 2,
                  metavar = "<switch_id> <name>")
port_group.add_option("--delete_port",
                  dest = "delete_port",
                  action = "store",
                  type = "int",
                  help = "Remove an existing port from the system",
                  default = None,
                  nargs = 1,
                  metavar = "<port_id>")
port_group.add_option("--show_port",
                  dest = "show_port",
                  action = "store",
                  type = "int",
                  help = "Show the details of an existing port in the system",
                  default = None,
                  nargs = 1,
                  metavar = "<port_id>")
port_group.add_option("--lookup_port_by_switch_and_name",
                  dest = "lookup_port_by_switch_and_name",
                  action = "store",
                  type = "string",
                  help = "Lookup a port ID by switch and port name",
                  nargs = 2,
                  metavar = "<switch_id> <name>")
port_group.add_option("--set_port_mode",
                  dest = "set_port_mode",
                  action = "store",
                  type = "string",
                  help = "Set the mode of a port to 'trunk' or 'access'",
                  nargs = 2,
                  metavar = "<port_id> <mode>")
port_group.add_option("--lock_port",
                  dest = "lock_port",
                  action = "store",
                  type = "string",
                  help = "Lock the settings on a port",
                  nargs = 1,
                  metavar = "<port_id>")
port_group.add_option("--unlock_port",
                  dest = "unlock_port",
                  action = "store",
                  type = "string",
                  help = "Unock the settings on a port",
                  nargs = 1,
                  metavar = "<port_id>")
port_group.add_option("--set_port_current_vlan",
                  dest = "set_port_current_vlan",
                  action = "store",
                  type = "int",
                  help = "Set the current VLAN assignment for a port",
                  nargs = 2,
                  metavar = "<port_id> <vlan_id>")
port_group.add_option("--get_port_current_vlan",
                  dest = "get_port_current_vlan",
                  action = "store",
                  type = "int",
                  help = "Get the current VLAN assignment for a port",
                  nargs = 1,
                  metavar = "<port_id>")
port_group.add_option("--set_port_base_vlan",
                  dest = "set_port_base_vlan",
                  action = "store",
                  type = "int",
                  help = "Set the base VLAN assignment for a port",
                  nargs = 2,
                  metavar = "<port_id> <vlan_id>")
port_group.add_option("--get_port_base_vlan",
                  dest = "get_port_base_vlan",
                  action = "store",
                  type = "int",
                  help = "Get the base VLAN assignment for a port",
                  nargs = 1,
                  metavar = "<port_id>")
port_group.add_option("--restore_port_to_base_vlan",
                  dest = "restore_port_to_base_vlan",
                  action = "store",
                  type = "int",
                  help = "Reset the port back to its base VLAN",
                  nargs = 1,
                  metavar = "<port_id>")
parser.add_option_group(port_group)

# VLAN commands
vlan_group = optparse.OptionGroup(parser, "VLAN commands")
vlan_group.add_option("--list_all_vlans",
                  dest = "list_all_vlans",
                  action = "store_true",
                  default = False,
                  help = "List all the existing vlans in the system")
vlan_group.add_option("--create_vlan",
                  dest = "create_vlan",
                  action = "store",
                  type = "string",
                  help = "Add a new vlan to the system",
                  nargs = 3,
                  metavar = "<name> <tag> <is_base_vlan>")
vlan_group.add_option("--delete_vlan",
                  dest = "delete_vlan",
                  action = "store",
                  type = "int",
                  help = "Remove an existing vlan from the system",
                  default = None,
                  nargs = 1,
                  metavar = "<vlan_id>")
vlan_group.add_option("--show_vlan",
                  dest = "show_vlan",
                  action = "store",
                  type = "int",
                  help = "Show the details of an existing vlan in the system",
                  default = None,
                  nargs = 1,
                  metavar = "<vlan_id>")
parser.add_option_group(vlan_group)

(opts, args) = parser.parse_args()

if opts.list_all_switches:
    result = call_vland('query', {'command':'db.all_switches', 'data':None})
    count = 0;
    for line in result:
        print line
        count += 1
    print '%d entries' % count
elif opts.list_all_ports:
    result = call_vland('query', {'command':'db.all_ports', 'data':None})
    count = 0;
    for line in result:
        print line
        count += 1
    print '%d entries' % count
elif opts.list_all_vlans:
    result = call_vland('query', {'command':'db.all_vlans', 'data':None})
    count = 0;
    for line in result:
        print line
        count += 1
    print '%d entries' % count
elif opts.create_switch is not None:
    try:
        switch_id = db.create_switch(opts.create_switch)
        print 'Created switch_id %d' % switch_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.create_port is not None:
    try:
        port_id = db.create_port(opts.create_port[0],
                                 opts.create_port[1],
                                 default_vlan_id, default_vlan_id)
        print 'Created port_id %d' % port_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.create_vlan is not None:
    try:
        vlan_id = db.create_vlan(opts.create_vlan[0],
                                 opts.create_vlan[1],
                                 is_positive(opts.create_vlan[2]))
        print 'Created vlan_id %d' % vlan_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.delete_switch is not None:
    try:
        switch_id = db.delete_switch(opts.delete_switch)
        print 'Deleted switch_id %d' % switch_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.delete_port is not None:
    try:
        port_id = db.delete_port(opts.delete_port)
        print 'Deleted port_id %d' % port_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.delete_vlan is not None:
    try:
        vlan_id = db.delete_vlan(opts.delete_vlan)
        print 'Deleted vlan_id %d' % vlan_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.lookup_switch_by_name is not None:
    try:
        switch_id = call_vland('query', {'command':'db.get_switch_id_by_name', 'data':{'name':opts.lookup_switch_by_name}})
        if switch_id is not None:
            print '%d' % switch_id
        else:
            print 'No switch found for name %s' % opts.lookup_switch_by_name
    except InputError as inst:
        print 'Failed: %s' % inst    
elif opts.show_switch is not None:
    try:
        switch = call_vland('query',
                            {'command':'db.get_switch_by_id',
                             'data':{'switch_id': opts.show_switch}})
        if switch is not None:
            dump_switch(switch)
        else:
            print 'No switch found for switch_id %d' % opts.show_switch
    except InputError as inst:
        print 'Failed: %s' % inst    
elif opts.list_switch_ports is not None:
    try:
        ports = call_vland('query',
                            {'command':'db.get_ports_by_switch',
                             'data':{'switch_id': opts.list_switch_ports}})
        if ports is not None:
            for port in ports:
                dump_port(port)
        else:
            print 'No ports found for switch_id %d' % opts.list_switch_ports
    except InputError as inst:
        print 'Failed: %s' % inst    
elif opts.show_port is not None:
    try:
        port = call_vland('query',
                            {'command':'db.get_port_by_id',
                             'data':{'port_id': opts.show_port}})
        if port is not None:
            dump_port(port)
        else:
            print 'No port found for port_id %d' % opts.show_port
    except InputError as inst:
        print 'Failed: %s' % inst    
elif opts.lookup_port_by_switch_and_name is not None:
    try:
        port = call_vland('query',
                            {'command':'db.get_port_by_switch_and_name',
                             'data':
                             {'switch_id': opts.lookup_port_by_switch_and_name[0],
                              'name': opts.lookup_port_by_switch_and_name[1]}})
        if port is not None:
            print port
        else:
            print 'No port found for switch_id %d, name %s' % (int(opts.lookup_port_by_switch_and_name[0]), opts.lookup_port_by_switch_and_name[1])
    except InputError as inst:
        print 'Failed: %s' % inst    
elif opts.set_port_mode is not None:
    try:
        port_id = db.set_port_mode(opts.set_port_mode[0], opts.set_port_mode[1])
        print "Updated mode for port_id %d" % port_id
    except InputError as inst:
        print 'Failed: %s' % inst    
elif opts.lock_port is not None:
    try:
        port_id = db.set_port_is_locked(opts.lock_port, True)
        print "Locked port_id %d" % port_id
    except InputError as inst:
        print 'Failed: %s' % inst    
elif opts.unlock_port is not None:
    try:
        port_id = db.set_port_is_locked(opts.unlock_port, False)
        print "Unlocked port_id %d" % port_id
    except InputError as inst:
        print 'Failed: %s' % inst    
elif opts.set_port_current_vlan is not None:
    try:
        port_id = db.set_current_vlan(opts.set_port_current_vlan[0], opts.set_port_current_vlan[1])
        print "Set current VLAN on port_id %d" % port_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.get_port_current_vlan is not None:
    try:
        vlan_id = call_vland('query',
                             {'command':'db.get_current_vlan_id_by_port',
                              'data':{'port_id': opts.get_port_current_vlan}})
        if vlan_id is not None:
            print vlan_id
        else:
            print "No current_vlan_id found for port_id %d" % opts.get_port_current_vlan
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.set_port_base_vlan is not None:
    try:
        port_id = db.set_base_vlan(opts.set_port_base_vlan[0], opts.set_port_base_vlan[1])
        print "Set base VLAN on port_id %d" % port_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.get_port_base_vlan is not None:
    try:
        vlan_id = call_vland('query',
                             {'command':'db.get_base_vlan_id_by_port',
                              'data':{'port_id': opts.get_port_base_vlan}})
        if vlan_id is not None:
            print vlan_id
        else:
            print "No base_vlan_id found for port_id %d" % port_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.restore_port_to_base_vlan is not None:
    try:
        port_id = db.restore_base_vlan(opts.restore_port_to_base_vlan)
        print "Restored port_id %d back to base VLAN" % port_id
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.show_vlan is not None:
    try:
        vlan = call_vland('query',
                          {'command':'db.get_vlan_by_id',
                           'data':{'vlan_id': opts.show_vlan}})
        if vlan is not None:
            dump_vlan(vlan)
        else:
            print 'No vlan found for vlan_id %d' % opts.show_vlan
    except InputError as inst:
        print 'Failed: %s' % inst
elif opts.status:
    print banner
    print 'Config:'
    print '  knows about %d switch(es)' % len(config.switches)
    print 'DB:'
    switches = db.all_switches()
    print '  knows about %d switch(es)' % len(switches)
    ports = db.all_ports()
    print '  knows about %d port(s)' % len(ports)
    vlans = db.all_vlans()
    print '  DB knows about %d vlan(s)' % len(vlans)
    print 'The default vlan tag (%d) is vlan_id %d' % (config.vland.default_vlan_tag, default_vlan_id)
    ret = call_vland('query', {'command':'status', 'data': None})
    print 'VLANd is running %s' % ret['running']
    print 'DB via VLANd:'
    switches = call_vland('query', {'command':'db.all_switches', 'data':None})
    print '  knows about %d switch(es)' % len(switches)
    ports = call_vland('query', {'command':'db.all_ports', 'data':None})
    print '  knows about %d port(s)' % len(ports)
    vlans = call_vland('query', {'command':'db.all_vlans', 'data':None})
    print '  DB knows about %d vlan(s)' % len(vlans)
else:
    print 'No recognised command given. Try -h for help'