e82e0097a9
Currently the later cmd_* calls -- umount, cleanup, delete -- all recreate the node graph by parsing the config file using create_graph() There is some need, however, to have a sense of global state when building the node list. The problem is, this is a one time operation -- we do not want to rebuild that state for these later calls (see the "loaded" checks in proposed Ic3b805f9258128d5233b21ff25579c03487c7fcc). An insight here seems to be that these cmd_* calls do not actually want to re-parse the configuration file and rebuild the node list; they just want to walk the node list in reverse with the state as provided after cmd_create(). So, rather than re-creating the node list, we might as well just pickle it, save it to disk along side the state dictionary dump and reload it for cmd_*. After this, I think we can safely have PluginBase.__init__() be passed the state. We will now know that this will only be called once, during initial creation. Change-Id: I68840594a34af28d41d9522addcfd830bd203b97
54 lines
1.5 KiB
Python
54 lines
1.5 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# plugin test case
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import logging
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from diskimage_builder.block_device.plugin import NodeBase
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from diskimage_builder.block_device.plugin import PluginBase
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logger = logging.getLogger(__name__)
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class TestBNode(NodeBase):
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def __init__(self, name, base):
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logger.debug("Create test 1")
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super(TestBNode, self).__init__(name)
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self.base = base
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def get_edges(self):
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return ([self.base], [])
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def create(self, state, rollback):
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state['test_b'] = {}
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state['test_b']['value'] = 'baz'
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return
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def umount(self, state):
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# umount run in reverse. this should run before test_a
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assert 'umount' not in state
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state['umount'] = []
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state['umount'].append('test_b')
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class TestB(PluginBase):
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def __init__(self, config, defaults):
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super(TestB, self).__init__()
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self.node = TestBNode(config['name'],
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config['base'])
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def get_nodes(self):
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return [self.node]
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