Class: RubyMaat::Analysis::Churn::Ownership

Inherits:
BaseAnalysis show all
Defined in:
lib/ruby_maat/analysis/churn.rb

Overview

Ownership analysis - churn metrics per author per entity

Instance Method Summary collapse

Instance Method Details

#analyze(dataset, _options = {}) ⇒ Object 



128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
 
# File 'lib/ruby_maat/analysis/churn.rb', line 128

def analyze(dataset, _options = {})
  # Group by entity and author
  results = {}

  dataset.to_df.each_row do |row|
    entity = row["entity"]
    author = row["author"]
    added = row["loc_added"] || 0
    deleted = row["loc_deleted"] || 0

    key = [entity, author]
    results[key] ||= {entity: entity, author: author, added: 0, deleted: 0}
    results[key][:added] += added
    results[key][:deleted] += deleted
  end

  # Sort by entity, then by total contribution descending
  sorted_results = results.values.sort do |a, b|
    entity_comparison = a[:entity] <=> b[:entity]
    if entity_comparison.zero?
      total_b = b[:added] + b[:deleted]
      total_a = a[:added] + a[:deleted]
      total_b <=> total_a
    else
      entity_comparison
    end
  end

  to_csv_data(sorted_results, i[entity author added deleted])
end