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https://github.com/avatao-content/baseimage-tutorial-framework
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Implement subscribing predicates found in yaml
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@ -1,5 +1,6 @@
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from subprocess import Popen
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from subprocess import Popen, run
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from functools import partial
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from contextlib import suppress
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import yaml
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from transitions import State
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@ -13,6 +14,7 @@ class YamlFSM(FSMBase):
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self.for_config_states_and_transitions_do(self.patch_config_callbacks)
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self.setup_states()
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super().__init__() # FSMBase.__init__() requires states
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self.for_config_states_and_transitions_do(self.subscribe_and_remove_predicates)
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self.setup_transitions()
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@staticmethod
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@ -38,6 +40,24 @@ class YamlFSM(FSMBase):
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if key in topatch:
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json_obj[key] = partial(self.run, json_obj[key])
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def subscribe_and_remove_predicates(self, json_obj):
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for key in json_obj:
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if key == 'predicates':
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for predicate in json_obj[key]:
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self.subscribe_predicate(
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json_obj['trigger'],
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partial(
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self.statuscode_is_zero,
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predicate
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)
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)
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with suppress(KeyError):
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json_obj.pop('predicates')
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@staticmethod
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def run(command, event):
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Popen(command, shell=True)
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@staticmethod
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def statuscode_is_zero(command):
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return run(command, shell=True).returncode == 0
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