2 # Copyright (C) The Arvados Authors. All rights reserved.
4 # SPDX-License-Identifier: AGPL-3.0
6 from __future__ import absolute_import, print_function
16 from apiclient import errors as apierror
18 from .baseactor import BaseNodeManagerActor
20 from libcloud.common.types import LibcloudError
21 from libcloud.common.exceptions import BaseHTTPError
23 # IOError is the base class for socket.error, ssl.SSLError, and friends.
24 # It seems like it hits the sweet spot for operations we want to retry:
25 # it's low-level, but unlikely to catch code bugs.
26 NETWORK_ERRORS = (IOError,)
27 ARVADOS_ERRORS = NETWORK_ERRORS + (apierror.Error,)
28 CLOUD_ERRORS = NETWORK_ERRORS + (LibcloudError, BaseHTTPError)
30 actor_class = BaseNodeManagerActor
32 class NodeManagerConfig(ConfigParser.SafeConfigParser):
33 """Node Manager Configuration class.
35 This a standard Python ConfigParser, with additional helper methods to
36 create objects instantiated with configuration information.
39 LOGGING_NONLEVELS = frozenset(['file'])
41 def __init__(self, *args, **kwargs):
42 # Can't use super() because SafeConfigParser is an old-style class.
43 ConfigParser.SafeConfigParser.__init__(self, *args, **kwargs)
44 for sec_name, settings in {
45 'Arvados': {'insecure': 'no',
50 'Daemon': {'min_nodes': '0',
53 'max_poll_time': '300',
54 'poll_stale_after': '600',
55 'max_total_price': '0',
56 'boot_fail_after': str(sys.maxint),
57 'node_stale_after': str(60 * 60 * 2),
59 'node_mem_scaling': '0.95',
60 'consecutive_idle_count': '2'},
61 'Manage': {'address': '127.0.0.1',
63 'ManagementToken': ''},
64 'Logging': {'file': '/dev/stderr',
67 if not self.has_section(sec_name):
68 self.add_section(sec_name)
69 for opt_name, value in settings.iteritems():
70 if not self.has_option(sec_name, opt_name):
71 self.set(sec_name, opt_name, value)
73 def get_section(self, section, transformer=None):
75 for key, value in self.items(section):
76 if transformer is not None:
78 value = transformer(value)
79 except (TypeError, ValueError):
85 return {key: getattr(logging, self.get('Logging', key).upper())
86 for key in self.options('Logging')
87 if key not in self.LOGGING_NONLEVELS}
89 def dispatch_classes(self):
90 mod_name = 'arvnodeman.computenode.dispatch'
91 if self.has_option('Daemon', 'dispatcher'):
92 mod_name = '{}.{}'.format(mod_name,
93 self.get('Daemon', 'dispatcher'))
94 module = importlib.import_module(mod_name)
95 return (module.ComputeNodeSetupActor,
96 module.ComputeNodeShutdownActor,
97 module.ComputeNodeUpdateActor,
98 module.ComputeNodeMonitorActor)
100 def new_arvados_client(self):
101 if self.has_option('Daemon', 'certs_file'):
102 certs_file = self.get('Daemon', 'certs_file')
105 insecure = self.getboolean('Arvados', 'insecure')
106 http = httplib2.Http(timeout=self.getint('Arvados', 'timeout'),
108 disable_ssl_certificate_validation=insecure)
109 return arvados.api(version='v1',
110 host=self.get('Arvados', 'host'),
111 token=self.get('Arvados', 'token'),
115 def new_cloud_client(self):
116 module = importlib.import_module('arvnodeman.computenode.driver.' +
117 self.get('Cloud', 'provider'))
118 driver_class = module.ComputeNodeDriver.DEFAULT_DRIVER
119 if self.has_option('Cloud', 'driver_class'):
120 d = self.get('Cloud', 'driver_class').split('.')
121 mod = '.'.join(d[:-1])
123 driver_class = importlib.import_module(mod).__dict__[cls]
124 auth_kwargs = self.get_section('Cloud Credentials')
125 if 'timeout' in auth_kwargs:
126 auth_kwargs['timeout'] = int(auth_kwargs['timeout'])
127 return module.ComputeNodeDriver(auth_kwargs,
128 self.get_section('Cloud List'),
129 self.get_section('Cloud Create'),
130 driver_class=driver_class)
132 def node_sizes(self, all_sizes):
133 """Finds all acceptable NodeSizes for our installation.
135 Returns a list of (NodeSize, kwargs) pairs for each NodeSize object
136 returned by libcloud that matches a size listed in our config file.
140 for sec_name in self.sections():
141 sec_words = sec_name.split(None, 2)
142 if sec_words[0] != 'Size':
144 size_spec = self.get_section(sec_name, int)
145 if 'price' in size_spec:
146 size_spec['price'] = float(size_spec['price'])
147 size_kwargs[sec_words[1]] = size_spec
148 # EC2 node sizes are identified by id. GCE sizes are identified by name.
150 for size in all_sizes:
151 if size.id in size_kwargs:
152 matching_sizes.append((size, size_kwargs[size.id]))
153 elif size.name in size_kwargs:
154 matching_sizes.append((size, size_kwargs[size.name]))
155 return matching_sizes
157 def shutdown_windows(self):
159 for n in self.get('Cloud', 'shutdown_windows').split(',')]