95 lines
3.9 KiB
Python
95 lines
3.9 KiB
Python
# Copyright (c) 2013 Hortonworks, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import copy
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from sahara import exceptions
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from sahara.i18n import _
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from sahara.plugins import provisioning as p
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HOST_REGISTRATIONS_TIMEOUT = p.Config(
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'Host registrations timeout', 'general',
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'cluster', config_type='int', priority=1,
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default_value=3600, is_optional=True,
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description='Timeout for host registrations, in seconds')
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DECOMMISSIONING_TIMEOUT = p.Config(
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'Timeout for decommissioning nodes', 'general',
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'cluster', config_type='int', priority=1,
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default_value=1000, is_optional=True,
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description='Timeout for decommissioning nodes, in seconds')
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class ConfigurationProvider(object):
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def __init__(self, config, hadoop_version):
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self.config = config
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self.config_mapper = {}
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self.config_items = []
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self.hadoop_version = hadoop_version
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self._initialize(config)
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def get_config_items(self):
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return self.config_items
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def get_applicable_target(self, name):
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return self.config_mapper.get(name)
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def _get_target(self, apptarget):
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if apptarget == 'TODO':
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apptarget = 'general'
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return apptarget
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def _initialize(self, config):
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for configuration in self.config['configurations']:
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for service_property in configuration['properties']:
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config = p.Config(service_property['name'],
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self._get_target(
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service_property['applicable_target']),
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service_property['scope'],
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config_type=service_property['config_type'],
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default_value=service_property
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['default_value'],
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is_optional=service_property[
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'is_optional'],
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description=service_property[
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'description'])
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setattr(config, 'tag', configuration['tag'].rsplit(".", 1)[0])
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self.config_items.append(config)
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# TODO(jspeidel): an assumption is made that property names
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# are unique across configuration sections which is dangerous
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property_name = service_property['name']
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# if property already exists, throw an exception
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if property_name in self.config_mapper:
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# internal error
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# ambari-config-resource contains duplicates
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raise exceptions.InvalidDataException(
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_('Internal Error. Duplicate property '
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'name detected: %s') % property_name)
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self.config_mapper[service_property['name']] = (
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self._get_target(
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service_property['applicable_target']))
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host_reg_timeout = copy.copy(HOST_REGISTRATIONS_TIMEOUT)
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setattr(host_reg_timeout, 'tag', 'global')
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self.config_items.append(host_reg_timeout)
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self.config_mapper[host_reg_timeout.name] = 'global'
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if self.hadoop_version == '2.0.6':
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dec_timeout = copy.copy(DECOMMISSIONING_TIMEOUT)
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setattr(dec_timeout, 'tag', 'global')
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self.config_items.append(dec_timeout)
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self.config_mapper[dec_timeout.name] = 'global'
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