aeac66577c5620286835e5284348f13ced05f2b0
2 Distributed Cloud Emulator (dcemulator)
3 (c) 2015 by Manuel Peuster <manuel.peuster@upb.de>
5 from mininet
.node
import Docker
9 DCDPID_BASE
= 1000 # start of switch dpid's used for data center switches
12 class EmulatorCompute(Docker
):
14 Emulator specific compute node class.
15 Inherits from Dockernet's Docker host class.
16 Represents a single container connected to a (logical)
18 We can add emulator specific helper functions to it.
22 self
, name
, dimage
, **kwargs
):
23 logging
.debug("Create EmulatorCompute instance: %s" % name
)
25 # call original Docker.__init__
26 Docker
.__init
__(self
, name
, dimage
, **kwargs
)
28 def getNetworkStatus(self
):
30 Helper method to receive information about the virtual networks
31 this compute instance is connected to.
37 Helper method to receive information about this compute instance.
42 class Datacenter(object):
44 Represents a logical data center to which compute resources
45 (Docker containers) can be added at runtime.
47 Will also implement resource bookkeeping in later versions.
50 def __init__(self
, name
):
51 self
.net
= None # DCNetwork to which we belong
53 self
.switch
= None # first prototype assumes one "bigswitch" per DC
54 self
.containers
= {} # keep track of running containers
56 def _get_next_dc_dpid(self
):
63 Each data center is represented by a single switch to which
64 compute resources can be connected at run time.
66 TODO: This will be changed in the future to support multiple networks
69 self
.switch
= self
.net
.mnet
.addSwitch(
70 "%s.s1" % self
.name
, dpid
=hex(self
._get
_next
_dc
_dpid
())[2:])
71 logging
.debug("created data center switch: %s" % str(self
.switch
))
76 def startCompute(self
, name
, image
=None, network
=None):
78 Create a new container as compute resource and connect it to this
81 TODO: This interface will change to support multiple networks to which
82 a single container can be connected.
84 assert name
is not None
85 # set default parameter
89 network
= {} # {"ip": "10.0.0.254/8"}
90 # create the container and connect it to the given network
91 d
= self
.net
.addDocker("%s" % (name
), dimage
=image
)
92 self
.net
.addLink(d
, self
.switch
, params1
=network
)
93 self
.containers
[name
] = d
94 return name
# we might use UUIDs for naming later on
96 def stopCompute(self
, name
):
98 Stop and remove a container from this data center.
100 assert name
in self
.containers
102 link
=None, node1
=self
.containers
[name
], node2
=self
.switch
)
103 self
.net
.removeDocker("%s" % (name
))
104 del self
.containers
[name
]
107 def listCompute(self
):
109 Return a list of all running containers assigned to this
112 return self
.containers
.itervalues()