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crowbar: Generate an event when a cluster config is changed #171

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crowbar: Generate an event when a cluster config is changed #171

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26 changes: 26 additions & 0 deletions crowbar_framework/app/models/pacemaker_service.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,8 @@
# limitations under the License.
#

require "set"

class PacemakerService < ServiceObject
def initialize(thelogger)
super(thelogger)
Expand Down Expand Up @@ -439,6 +441,30 @@ def apply_role_post_chef_call(old_role, role, all_nodes)

apply_cluster_roles_to_new_nodes_post_chef_call(role)

# let's not consider the first time the proposal is applied as worth
# sending an event
if !old_role.nil? && !role.nil?
old_attributes = old_role.default_attributes["pacemaker"]
new_attributes = role.default_attributes["pacemaker"]

changed_attributes = Set.new

if old_attributes["haproxy"]["public_name"] != new_attributes["haproxy"]["public_name"]
changed_attributes.add("haproxy.public_name")
end
if old_attributes["haproxy"]["admin_name"] != new_attributes["haproxy"]["admin_name"]
changed_attributes.add("haproxy.admin_name")
end

unless changed_attributes.empty?
details = {
cluster: "#{PacemakerServiceObject.cluster_key}:#{role.inst}",
attributes: changed_attributes
}
Crowbar::EventDispatcher.trigger_hooks("cluster_changed", details)
end
end

@logger.debug("Pacemaker apply_role_post_chef_call: leaving")
end

Expand Down