class AWS::EMR::InstanceGroup
@attr_reader [String] market
@attr_reader [String] instance_role
@attr_reader [String,nil] bid_price
@attr_reader [String] instance_type
@attr_reader [String] instance_request_count
@attr_reader [String] instance_running_count
@attr_reader [String] state
@attr_reader [String] last_state_change_reason
@attr_reader [Time] created_at
@attr_reader [Time] started_at
@attr_reader [Time] ready_at
@attr_reader [Time] ended_at
Attributes
id[R]
@return [String]
instance_group_id[R]
@return [String]
job_flow[R]
@return [JobFlow]
Public Class Methods
new(job_flow, instance_group_id, options = {})
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@api private
Calls superclass method
AWS::Core::Resource.new
# File lib/aws/emr/instance_group.rb, line 44 def initialize job_flow, instance_group_id, options = {} @job_flow = job_flow @instance_group_id = instance_group_id super end
Public Instance Methods
exists?()
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@return [Boolean] Returns `true` if the instance group exists.
# File lib/aws/emr/instance_group.rb, line 108 def exists? !!find_in_response(get_resource) end
modify(options = {})
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@param [Hash] options @option options [Integer] :count The new target size for the
instance group.
@return [nil]
# File lib/aws/emr/instance_group.rb, line 100 def modify options = {} options[:instance_group_id] = instance_group_id options[:instance_count] = options.delete(:count) if options[:count] client.modify_instance_groups(:instance_groups => [options]) nil end
set_instance_count(count)
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Modifies the target size of this instance group. @param [Integer] count @return (see modify)
# File lib/aws/emr/instance_group.rb, line 92 def set_instance_count count modify(:instance_count => count) end
Protected Instance Methods
find_in_response(resp)
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# File lib/aws/emr/instance_group.rb, line 122 def find_in_response resp data = nil resp.data[:job_flows].each do |job| if job[:job_flow_id] == job_flow.job_flow_id job[:instances][:instance_groups].each do |ig| if ig[:instance_group_id] == instance_group_id data = ig end end end end data end
get_resource(attr = nil)
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# File lib/aws/emr/instance_group.rb, line 118 def get_resource attr = nil client.describe_job_flows(:job_flow_ids => [job_flow.id]) end
resource_identifiers()
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# File lib/aws/emr/instance_group.rb, line 114 def resource_identifiers [[:job_flow_id, job_flow.id], [:instance_group_id, id]] end