4d2e554f68
* Import all providers, specs and tests to this module * Use corosync module to actually install paceamker Fuel-CI: disable Change-Id: I9a16ad1453b694aa0a3e78d079f9c57365a5fcf1
105 lines
3.9 KiB
Ruby
105 lines
3.9 KiB
Ruby
module Pacemaker
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# functions related to locations constraints
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# main structure "constraint_locations"
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module ConstraintLocations
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# construct the constraint unique name
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# from primitive's and node's names
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# @param primitive [String]
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# @param node [String]
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# @return [String]
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def service_location_name(primitive, node)
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"#{primitive}-on-#{node}"
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end
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# check if service location exists for this primitive on this node
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# @param primitive [String] the primitive's name
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# @param node [String] the node's name
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# @return [true,false]
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def service_location_exists?(primitive, node)
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id = service_location_name primitive, node
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constraint_location_exists? id
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end
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# add a location constraint to enable a service on a node
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# @param primitive [String] the primitive's name
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# @param node [String] the node's name
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# @param score [Numeric,String] score value
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def service_location_add(primitive, node, score = 100)
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location_structure = {
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'id' => service_location_name(primitive, node),
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'node' => node,
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'rsc' => primitive,
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'score' => score,
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}
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constraint_location_add location_structure
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end
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# remove the service location on this node
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# @param primitive [String] the primitive's name
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# @param node [String] the node's name
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def service_location_remove(primitive, node)
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id = service_location_name primitive, node
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constraint_location_remove id
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end
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# get location constraints and use mnemoization on the list
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# @return [Hash<String => Hash>]
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def constraint_locations
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return @locations_structure if @locations_structure
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@locations_structure = constraints 'rsc_location'
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end
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# add a location constraint
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# @param location_structure [Hash<String => String>] the location data structure
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def constraint_location_add(location_structure)
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location_patch = xml_document
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location_element = xml_rsc_location location_structure
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raise "Could not create XML patch from location '#{location_structure.inspect}'!" unless location_element
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location_patch.add_element location_element
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wait_for_constraint_create xml_pretty_format(location_patch.root), location_structure['id']
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end
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# remove a location constraint
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# @param id [String] the constraint id
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def constraint_location_remove(id)
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wait_for_constraint_remove "<rsc_location id='#{id}'/>\n", id
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end
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# check if locations constraint exists
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# @param id [String] the constraint id
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# @return [TrueClass,FalseClass]
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def constraint_location_exists?(id)
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constraint_locations.key? id
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end
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# generate rsc_location elements from data structure
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# @param data [Hash]
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# @return [REXML::Element]
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def xml_rsc_location(data)
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return unless data && data.is_a?(Hash)
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# create an element from the top level hash and skip 'rules' attribute
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# because if should be processed as children elements and useless 'type' attribute
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rsc_location_element = xml_element 'rsc_location', data, %w(rules type)
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# there are no rule elements
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return rsc_location_element unless data['rules'] && data['rules'].respond_to?(:each)
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# create a rule element with attributes and treat expressions as children elements
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sort_data(data['rules']).each do |rule|
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next unless rule.is_a? Hash
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rule_element = xml_element 'rule', rule, 'expressions'
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# add expression children elements to the rule element if the are present
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if rule['expressions'] && rule['expressions'].respond_to?(:each)
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sort_data(rule['expressions']).each do |expression|
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next unless expression.is_a? Hash
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expression_element = xml_element 'expression', expression
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rule_element.add_element expression_element
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end
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end
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rsc_location_element.add_element rule_element
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end
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rsc_location_element
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end
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end
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end
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