Class: MOSAIK::Commands::Evaluate

Inherits:
MOSAIK::Command::Graph show all
Defined in:
lib/mosaik/commands/evaluate.rb

Overview

Evaluate microservice candidates

Instance Method Summary collapse

Instance Method Details

#call ⇒ Object 



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# File 'lib/mosaik/commands/evaluate.rb', line 29

def call
  info "Evaluating microservice candidates (#{options.map { |k, v| "#{k}: #{v}" }.join(', ')})"

  # Remove clusters with cardinality less than 2
  graph.clusters.delete_if { |_, cluster| cluster.vertices.size < 2 }

  # Evaluate metrics
  options[:metrics].each do |metric|
    Metrics
      .const_get(metric.to_s.camelize)
      .new(options, graph)
      .evaluate
  end

  # Print the clusters
  graph.clusters.each_value do |cluster|
    info "Cluster #{cluster.id} (#{options[:metrics].map { |m| "#{m}: #{cluster.attributes[m].round(2)}" }.join(', ')})"

    next unless options[:debug]

    debug "Cluster #{cluster.id}: #{cluster.vertices.map(&:id).join(', ')}"
  end

  # Print the graph
  info "Graph (#{options[:metrics].map { |m| "#{m}: #{graph.attributes[m].round(2)}" }.join(', ')})"

  # Write graph to file
  write_graph

  # Render graph visualization
  visualize_graph

  return unless options[:statistics]

  # Compute statistics
  statistics = Graph::Statistics
    .new(options, graph)
    .call

  # Write statistics to file
  File.write(options[:statistics], statistics.to_yaml)

  info "Statistics written to #{options[:statistics]}"
end

#validate ⇒ Object

Raises:



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# File 'lib/mosaik/commands/evaluate.rb', line 19

def validate
  super

  raise OptionError, "input file not found: #{options[:input]}" unless File.exist? options[:input]

  metrics = options[:metrics] - self.class.defaults[:metrics]

  raise OptionError, "unknown metrics: #{metrics.join(', ')}" unless metrics.empty?
end