Class: Pcrd::Output::AnalyzePrinter

Inherits:
Object
  • Object
show all
Defined in:
lib/pcrd/output/analyze_printer.rb

Constant Summary collapse

PASTEL = 
Pastel.new
STATUS_COLORS = 
{
  unchanged:        ->(s) { s },
  type_changed:     ->(s) { PASTEL.yellow(s) },
  renamed:          ->(s) { PASTEL.cyan(s) },
  type_and_renamed: ->(s) { PASTEL.yellow(s) },
  dropped:          ->(s) { PASTEL.red(s) },
  added:            ->(s) { PASTEL.green(s) }
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(output: $stdout) ⇒ AnalyzePrinter

Returns a new instance of AnalyzePrinter.



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# File 'lib/pcrd/output/analyze_printer.rb', line 21

def initialize(output: $stdout)
  @out = output
end

Instance Method Details

Cross-cluster diff: source schema vs. target (live or synthesized from spec).



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# File 'lib/pcrd/output/analyze_printer.rb', line 49

def print_diff_report(table_name:, schema_name: "public", row_count:,
                      diff_entries:, packer:, target_is_live: false)
  heading = "Table: #{schema_name}.#{table_name}"
  heading += "  (#{format_count(row_count)} rows)" if row_count > 0
  heading += target_is_live ? "  — live source vs. live target" \
                            : "  — source vs. proposed target (synthesized from spec)"
  @out.puts
  @out.puts PASTEL.bold(heading)
  @out.puts

  print_diff_table(diff_entries)
  @out.puts
  print_diff_padding_summary(diff_entries, packer, row_count)
end

#print_table_report(table_name:, schema_name: "public", row_count:, report:) ⇒ Object

Single-cluster padding analysis: current layout vs. optimal reordering.



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# File 'lib/pcrd/output/analyze_printer.rb', line 26

def print_table_report(table_name:, schema_name: "public", row_count:, report:)
  heading = "Table: #{schema_name}.#{table_name}"
  heading += "  (#{format_count(row_count)} rows)" if row_count > 0
  @out.puts
  @out.puts PASTEL.bold(heading)
  @out.puts

  if report[:already_optimal]
    @out.puts PASTEL.green("  ✓ Column order is already optimal. No padding waste detected.")
    @out.puts
    print_layout_table(report[:current_layout], title: "Current layout")
    return
  end

  print_layout_table(report[:current_layout], title: "Current layout",
                     highlight_padding: true)
  @out.puts
  print_savings_summary(report, row_count)
  @out.puts
  print_layout_table(report[:optimal_layout], title: "Suggested layout (optimal packing)")
end