50 lines
1.5 KiB
Ruby
50 lines
1.5 KiB
Ruby
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# frozen_string_literal: true
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module Ml
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class CandidatesCsvPresenter
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CANDIDATE_ASSOCIATIONS = [:latest_metrics, :params, :experiment].freeze
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# This file size limit is mainly to avoid the generation to hog resources from the server. The value is arbitrary
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# can be update once we have better insight into usage.
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TARGET_FILESIZE = 2.megabytes
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def initialize(candidates)
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@candidates = candidates
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end
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def present
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CsvBuilder.new(@candidates, headers, CANDIDATE_ASSOCIATIONS).render(TARGET_FILESIZE)
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end
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private
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def headers
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metric_names = columns_names(&:metrics)
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param_names = columns_names(&:params)
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candidate_to_metrics = @candidates.to_h do |candidate|
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[candidate.id, candidate.latest_metrics.to_h { |m| [m.name, m.value] }]
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end
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candidate_to_params = @candidates.to_h do |candidate|
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[candidate.id, candidate.params.to_h { |m| [m.name, m.value] }]
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end
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{
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project_id: 'project_id',
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experiment_iid: ->(c) { c.experiment.iid },
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candidate_iid: 'internal_id',
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name: 'name',
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external_id: 'eid',
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start_time: 'start_time',
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end_time: 'end_time',
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**param_names.index_with { |name| ->(c) { candidate_to_params.dig(c.id, name) } },
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**metric_names.index_with { |name| ->(c) { candidate_to_metrics.dig(c.id, name) } }
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}
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end
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def columns_names(&selector)
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@candidates.flat_map(&selector).map(&:name).uniq
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end
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end
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end
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