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from charmhelpers.core import hookenv

from charms.reactive import hook

from charms.reactive import RelationBase

from charms.reactive import scopes

 

 

class JDBCProvides(RelationBase):

    # Every unit connecting will get the same information

    scope = scopes.GLOBAL

 

    # Use some template magic to declare our relation(s)

    @hook('{provides:dcos}-relation-{joined,changed}')

    def changed(self):

        # Signify that the relationship is now available to our principal layer(s)

        self.set_state('{relation_name}.available')

 

    @hook('{provides:dcos}-relation-{broken,departed}')

    def broken(self):

        # Remove the state that our relationship is now available to our principal layer(s)

        self.remove_state('{relation_name}.available')

 

    # call this method when passed into methods decorated with

    # @when('{relation}.available')

    # to configure the relation data

    def configure(self):

        relation_info = {

            'hostname': hookenv.unit_get('private-address'),

        }

        self.set_remote(**relation_info)