3 The sliver manager has several functions. It is responsible for
4 creating, resource limiting, starting, stopping, and destroying
5 slivers. It provides an API for users to access these functions and
6 also to make inter-sliver resource loans. The sliver manager is also
7 responsible for handling delegation accounts.
10 try: from bwlimit import bwmin, bwmax
11 except ImportError: bwmin, bwmax = 8, 1000*1000*1000
21 DEFAULT_ALLOCATION = {
26 'cpu_share': 32, # proportional share
27 # bandwidth parameters
28 'net_min_rate': bwmin / 1000, # kbps
29 'net_max_rate': bwmax / 1000, # kbps
30 'net_share': 1, # proportional share
31 # bandwidth parameters over routes exempt from node bandwidth limits
32 'net_i2_min_rate': bwmin / 1000, # kbps
33 'net_i2_max_rate': bwmax / 1000, # kbps
34 'net_i2_share': 1, # proportional share
35 'net_max_kbyte' : 5662310, #Kbyte
36 'net_thresh_kbyte': 4529848, #Kbyte
37 'net_i2_max_kbyte': 17196646,
38 'net_i2_thresh_kbyte': 13757316,
40 'disk_max': 5000000, # bytes
42 # VSERVER specific limits
43 # resident set size (memory) limits
44 'rss_min': sliver_vs.KEEP_LIMIT,
45 'rss_soft': sliver_vs.KEEP_LIMIT,
46 'rss_hard': sliver_vs.KEEP_LIMIT,
47 # address space limits
48 'as_min': sliver_vs.KEEP_LIMIT,
49 'as_soft': sliver_vs.KEEP_LIMIT,
50 'as_hard': sliver_vs.KEEP_LIMIT,
51 # number of process limit
52 'nproc_min': sliver_vs.KEEP_LIMIT,
53 'nproc_soft': sliver_vs.KEEP_LIMIT,
54 'nproc_hard': sliver_vs.KEEP_LIMIT,
55 # number of file descriptor limit
56 'openfd_min': sliver_vs.KEEP_LIMIT,
57 'openfd_soft': sliver_vs.KEEP_LIMIT,
58 'openfd_hard': sliver_vs.KEEP_LIMIT,
61 start_requested = False # set to True in order to request that all slivers be started
64 def whitelistfilter():
65 """creates a regex (re) object based on the slice definitions
66 in /etc/planetlab/whitelist"""
69 whitelist_re = re.compile("([a-zA-Z0-9\*]+)_([a-zA-Z0-9\*]+)")
72 f = open('/etc/planetlab/whitelist')
73 for line in f.readlines():
74 linecount = linecount+1
77 if len(line)>0 and line[0]=='#':
79 m = whitelist_re.search(line)
81 logger.log("skipping line #%d in /etc/planetlab/whitelist" % linecount)
84 whitelist.append(m.group())
87 logger.log("IOError -> %s" % e)
88 logger.log("No whitelist file found; setting slice white list to *_*")
93 w = string.replace(w,'*','([a-zA-Z0-9]+)')
94 if white_re_list == None:
97 white_re_list = "(%s)|(%s)" % (white_re_list,w)
99 if white_re_list == None:
100 white_re_list = "([a-zA-Z0-9]+)_([a-zA-Z0-9]+)"
102 logger.log("whitelist regex = %s" % white_re_list)
103 whitelist_re = re.compile(white_re_list)
106 @database.synchronized
107 def GetSlivers(data, fullupdate=True):
108 """This function has two purposes. One, convert GetSlivers() data
109 into a more convenient format. Two, even if no updates are coming
110 in, use the GetSlivers() heartbeat as a cue to scan for expired
115 f = open('/etc/planetlab/node_id')
116 try: node_id = int(f.read())
118 except: logger.log_exc()
120 if data.has_key('node_id') and data['node_id'] != node_id: return
122 if data.has_key('networks'):
123 for network in data['networks']:
124 if network['is_primary'] and network['bwlimit'] is not None:
125 DEFAULT_ALLOCATION['net_max_rate'] = network['bwlimit'] / 1000
127 ### Emulab-specific hack begins here
129 'instantiation': 'plc-instantiated',
130 'keys': '''ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA5Rimz6osRvlAUcaxe0YNfGsLL4XYBN6H30V3l/0alZOSXbGOgWNdEEdohwbh9E8oYgnpdEs41215UFHpj7EiRudu8Nm9mBI51ARHA6qF6RN+hQxMCB/Pxy08jDDBOGPefINq3VI2DRzxL1QyiTX0jESovrJzHGLxFTB3Zs+Y6CgmXcnI9i9t/zVq6XUAeUWeeXA9ADrKJdav0SxcWSg+B6F1uUcfUd5AHg7RoaccTldy146iF8xvnZw0CfGRCq2+95AU9rbMYS6Vid8Sm+NS+VLaAyJaslzfW+CAVBcywCOlQNbLuvNmL82exzgtl6fVzutRFYLlFDwEM2D2yvg4BQ== root@boss.emulab.net''',
131 'name': 'utah_elab_delegate',
132 'timestamp': data['timestamp'],
136 database.db.deliver_record(emulabdelegate)
137 ### Emulab-specific hack ends here
140 initscripts_by_id = {}
141 for is_rec in data['initscripts']:
142 initscripts_by_id[str(is_rec['initscript_id'])] = is_rec['script']
144 # remove slivers not on the whitelist
145 whitelist_regex = whitelistfilter()
147 for sliver in data['slivers']:
149 rec.setdefault('timestamp', data['timestamp'])
151 # convert attributes field to a proper dict
153 for attr in rec.pop('attributes'): attr_dict[attr['name']] = attr['value']
156 keys = rec.pop('keys')
157 rec.setdefault('keys', '\n'.join([key_struct['key'] for key_struct in keys]))
159 rec.setdefault('type', attr_dict.get('type', 'sliver.VServer'))
160 rec.setdefault('vref', attr_dict.get('vref', 'default'))
161 is_id = attr_dict.get('plc_initscript_id')
162 if is_id is not None and is_id in initscripts_by_id:
163 rec['initscript'] = initscripts_by_id[is_id]
165 rec['initscript'] = ''
166 rec.setdefault('delegations', []) # XXX - delegation not yet supported
168 # extract the implied rspec
171 for resname, default_amt in DEFAULT_ALLOCATION.iteritems():
172 try: amt = int(attr_dict[resname])
173 except (KeyError, ValueError): amt = default_amt
177 m = whitelist_regex.search(sliver['name'])
179 rspec['whitelist'] = 0
182 database.db.deliver_record(rec)
183 if fullupdate: database.db.set_min_timestamp(data['timestamp'])
186 # handle requested startup
187 global start_requested
189 start_requested = False
191 for name in database.db.iterkeys():
192 accounts.get(name).start(delay=cumulative_delay)
193 cumulative_delay += 3
195 def deliver_ticket(data): return GetSlivers(data, fullupdate=False)
198 def start(options, config):
199 accounts.register_class(sliver_vs.Sliver_VS)
200 accounts.register_class(delegate.Delegate)
201 global start_requested
202 start_requested = options.startup
204 api.deliver_ticket = deliver_ticket