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# File 'lib/heapscope/report/text.rb', line 8
def render(report)
lines = []
lines << "╔══════════════════════════════════════════╗"
lines << "║ HEAPSCOPE REPORT ║"
lines << "╚══════════════════════════════════════════╝"
lines << "Ruby: #{report.runtime_info[:ruby]} (#{report.runtime_info[:engine]})"
lines << "HeapScope: #{report.heapscope_version}"
lines << ""
if report.summary[:healthy]
lines << "Result: HEALTHY"
lines << "Peak object growth occurred during workload may have been reclaimed."
lines << "Persistent class growth: none significant." if report.findings.none? { |f| f.code == "HS001" }
else
lines << "Result: ATTENTION"
end
lines << ""
if report.before && report.after
lines << "RSS"
lines << " Before: #{mb(report.before.)}"
lines << " After: #{mb(report.after.)}"
lines << " Delta: #{mb_delta(report.diff&.)}"
lines << ""
lines << "Ruby Heap (live slots)"
lines << " Before: #{fmt(report.before.heap_live_slots)}"
lines << " After: #{fmt(report.after.heap_live_slots)}"
lines << " Delta: #{signed(report.diff&.heap_live_delta)}"
lines << ""
end
if report.diff
ratio = report.diff.retention_ratio
lines << "Allocated Δ: #{fmt(report.diff.allocated_delta)}"
lines << "Freed Δ: #{fmt(report.diff.freed_delta)}"
lines << "Surviving ≈: #{fmt(report.diff.surviving_estimate)}"
lines << "Retention: #{ratio ? format('%.2f%%', ratio * 100) : 'n/a'}"
lines << ""
lines << "TOP CLASS GROWTH"
lines << "CLASS BEFORE AFTER DELTA BYTES Δ"
report.diff.growing_classes(15).each do |c|
lines << format("%-28s %10s %10s %10s %12s",
truncate(c[:name], 28),
fmt(c[:before_count]),
fmt(c[:after_count]),
signed(c[:delta_count]),
mb_delta(c[:delta_bytes]))
end
lines << ""
end
if report.retention
lines << "RETENTION SESSION"
lines << " Samples: #{report.retention[:samples]}"
lines << " Force GC: #{report.retention[:force_gc]}"
Array(report.retention[:persistent]).first(10).each do |entry|
lines << " #{entry[:name]}: #{entry[:series].inspect} (#{entry[:trend][:pattern]}, slope #{entry[:trend][:slope]})"
end
lines << ""
end
unless report.suspects.empty?
lines << "TOP SUSPECTS"
report.suspects.first(8).each_with_index do |s, i|
lines << " #{i + 1}. #{s[:name]} #{s[:severity].to_s.upcase}"
lines << " +#{s[:delta_count]} retained class=#{s[:classification]}"
end
lines << ""
end
unless report.findings.empty?
lines << "FINDINGS"
report.findings.each do |f|
lines << " #{f.code} — #{f.title} [#{f.severity.to_s.upcase}]"
f.facts.each { |fact| lines << " Fact: #{fact}" }
f.derived.each { |d| lines << " Derived: #{d}" }
lines << " Hypothesis: #{f.hypothesis}" if f.hypothesis
lines << " Suspected cause: #{f.suspected_cause}" if f.suspected_cause
f.suggestions.each { |s| lines << " → #{s}" }
lines << ""
end
end
unless report.limitations.empty?
lines << "LIMITATIONS"
report.limitations.each { |l| lines << " - #{l}" }
lines << ""
end
if report.budget_result
lines << "BUDGET: #{report.budget_result[:passed] ? 'PASS' : 'FAIL'}"
Array(report.budget_result[:violations]).each { |v| lines << " - #{v}" }
lines << ""
end
if report.fragmentation
lines << "FRAGMENTATION INDICATOR"
lines << " Status: #{report.fragmentation[:status]}"
lines << " RSS/heap ratio ≈ #{report.fragmentation[:rss_to_heap_ratio]}"
lines << " #{report.fragmentation[:note]}"
lines << ""
end
if report.aging && !report.aging.empty?
lines << "OBJECT AGING (coarse)"
report.aging.first(8).each do |row|
lines << " #{row[:class]} bucket=#{row[:bucket]} survived=#{row[:survived_ratio]} series=#{row[:series].inspect}"
end
lines << " Note: coarse multi-cycle survival buckets — not exact ages."
lines << ""
end
if report.retention_paths && !report.retention_paths.empty?
lines << "RETENTION PATHS / RETAINERS"
report.retention_paths.each do |block|
lines << " #{block[:summary]}"
Array(block[:retainers]).each do |r|
lines << " - #{r[:class]} approx_retained=#{r[:approx_retained]} (#{r[:note]})"
end
end
lines << ""
end
if report.dominators && !report.dominators.empty?
lines << "APPROXIMATE TOP RETAINERS"
report.dominators.first(5).each do |d|
name = d.respond_to?(:class_name) ? d.class_name : d[:class_name]
retained = d.respond_to?(:approx_retained) ? d.approx_retained : d[:approx_retained]
lines << " #{name}: approx retained #{retained}"
end
lines << ""
end
if report.reproduction
lines << "REPRODUCTION"
lines << " #{report.reproduction[:command]}"
lines << ""
end
steps = Suggest.next_steps(report)
unless steps.empty?
lines << "NEXT STEPS"
steps.each_with_index do |step, i|
tag = step[:code] ? "[#{step[:code]}]" : "[hint]"
lines << " #{i + 1}. #{tag} #{step[:action]}"
end
lines << ""
end
alerts = report.metadata[:alerts] || report.metadata["alerts"]
if alerts && !alerts.empty?
lines << "MONITOR ALERTS"
Array(alerts).each do |a|
kind = a[:kind] || a["kind"]
msg = a[:message] || a["message"]
lines << " - #{kind}: #{msg}"
end
lines << ""
end
lines << "Privacy: object values are not serialized by default."
Branding.funding_lines.each { |l| lines << l }
lines << Branding.
lines.join("\n")
end
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