55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
#!/usr/bin/python
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import json
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from charms.reactive import RelationBase
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from charms.reactive import hook
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from charms.reactive import scopes
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class CinderBackendProvides(RelationBase):
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scope = scopes.GLOBAL
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@hook('{provides:cinder-backend}-relation-joined')
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def cinder_backend_joined(self):
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conv = self.conversation()
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conv.set_state('{relation_name}.joined')
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conv.set_state('{relation_name}.connected')
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conv.set_state('{relation_name}.available')
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@hook('{provides:cinder-backend}-relation-{broken, departed}')
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def cinder_backend_departed(self):
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conv = self.conversation()
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conv.remove_state('{relation_name}.joined')
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conv.remove_state('{relation_name}.available')
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conv.remove_state('{relation_name}.connected')
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conv.set_state('{relation_name}.departing')
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def configure_principal(self, backend_name, configuration, stateless=None):
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"""Send principle cinder-backend information.
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:param backend_name: Name of storage backend.
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:type backend_name: str
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:param configuration: List of pairs of key value tuples to be used in
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backend section of config.
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:type configuration: [(k1,v1), (k2,v2),...]
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:param stateless: Whether backend is stateless.
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:type stateless: bool
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"""
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conv = self.conversation()
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subordinate_configuration = {
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"cinder": {
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"/etc/cinder/cinder.conf": {
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"sections": {
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backend_name: configuration
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}
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}
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}
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}
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conv.set_remote(
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backend_name=backend_name,
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stateless=stateless,
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subordinate_configuration=json.dumps(subordinate_configuration))
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