Module: Harnex::Retention

Defined in:
lib/harnex/retention.rb

Constant Summary collapse

DIRS = 
{
  "events" => "events",
  "output" => "output"
}.freeze
THROTTLE_SECONDS = 
3600
MAX_REPORTED_PATHS = 
100
METADATA_PATH = 
File.join(STATE_DIR, "retention.json").freeze
LOCK_PATH = 
File.join(STATE_DIR, "retention.lock").freeze

Class Method Summary collapse

Class Method Details

.auto_prune(repo_root:, current_paths: [], env: ENV, now: Time.now) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 39

def auto_prune(repo_root:, current_paths: [], env: ENV, now: Time.now)
  prune(
    repo_root: repo_root,
    current_paths: current_paths,
    env: env,
    now: now,
    dry_run: false,
    force: false
  )
rescue Config::ConfigError
  raise
rescue StandardError => e
  warn("harnex: retention prune failed: #{e.message}; run `harnex doctor --prune --dry-run` to inspect candidates")
  { ok: false, error: e.message }
end

.delete_candidate(file, dry_run:) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 159

def delete_candidate(file, dry_run:)
  return true if dry_run

  File.delete(file.fetch(:path))
  true
rescue Errno::ENOENT
  true
rescue Errno::EACCES, Errno::EPERM, Errno::ENOTDIR
  false
end

.inventory(dir) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 90

def inventory(dir)
  FileUtils.mkdir_p(dir)
  base = File.expand_path(dir)
  Dir.children(base).sort.filter_map do |name|
    path = File.expand_path(File.join(base, name))
    next unless path.start_with?("#{base}#{File::SEPARATOR}")

    stat = File.lstat(path)
    next unless stat.file?

    { path: path, bytes: stat.size, mtime: stat.mtime }
  rescue Errno::ENOENT, Errno::EACCES, Errno::ENOTDIR
    nil
  end
end

.last_prune_metadata ⇒ Object 



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# File 'lib/harnex/retention.rb', line 276

def last_prune_metadata
  data = JSON.parse(File.read(METADATA_PATH))
  data["last_prune"]
rescue Errno::ENOENT, JSON::ParserError
  nil
end

.live_start_records(path) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 208

def live_start_records(path)
  return [] unless File.file?(path)

  open = {}
  File.foreach(path) do |line|
    record = JSON.parse(line)
    next unless record.is_a?(Hash)

    if DispatchHistory.start_record?(record)
      next unless DispatchHistory.same_host?(record)
      next unless record["pid"] && Harnex.alive_pid?(record["pid"])

      open[start_key(record)] = record
    elsif DispatchHistory.end_record?(record)
      open.delete_if { |_key, start| DispatchHistory.end_matches_start?(record, start) }
    end
  rescue JSON::ParserError, ArgumentError, TypeError
    next
  end
  open.values
rescue Errno::ENOENT, Errno::EACCES
  []
end

.persist_last_prune(report) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 283

def persist_last_prune(report)
  payload = {
    "last_prune" => {
      "timestamp" => report.fetch(:timestamp),
      "dry_run" => report.fetch(:dry_run),
      "applied" => !report.fetch(:dry_run),
      "directories" => report.fetch(:directories).transform_keys(&:to_s).transform_values do |stats|
        {
          "before_count" => stats.fetch(:before_count),
          "before_bytes" => stats.fetch(:before_bytes),
          "after_count" => stats.fetch(:after_count),
          "after_bytes" => stats.fetch(:after_bytes),
          "deleted_count" => stats.fetch(:deleted_count),
          "deleted_bytes" => stats.fetch(:deleted_bytes),
          "protected_count" => stats.fetch(:protected_count),
          "protected_bytes" => stats.fetch(:protected_bytes),
          "over_cap" => stats.fetch(:over_cap)
        }
      end
    }
  }
  tmp = "#{METADATA_PATH}.tmp.#{Process.pid}"
  File.write(tmp, JSON.pretty_generate(payload))
  File.rename(tmp, METADATA_PATH)
rescue StandardError => e
  warn("harnex: failed to persist retention metadata: #{e.message}")
end

.protect(paths, path) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 250

def protect(paths, path)
  text = path.to_s
  return if text.empty?

  paths.add(File.expand_path(text))
end

.protect_derived_session_paths(paths, data) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 239

def protect_derived_session_paths(paths, data)
  repo = data["repo_root"].to_s
  id = data["id"].to_s
  return if repo.empty? || id.empty?

  protect(paths, Harnex.events_log_path(repo, id))
  protect(paths, Harnex.output_log_path(repo, id))
rescue StandardError
  nil
end

.protect_live_registry_paths(paths) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 178

def protect_live_registry_paths(paths)
  return unless Dir.exist?(SESSIONS_DIR)

  Dir.glob(File.join(SESSIONS_DIR, "*.json")).sort.each do |path|
    data = JSON.parse(File.read(path))
    next unless data["pid"] && Harnex.alive_pid?(data["pid"])

    protect(paths, data["events_log_path"])
    protect(paths, data["output_log_path"])
    protect_derived_session_paths(paths, data)
  rescue JSON::ParserError, ArgumentError, TypeError, Errno::ENOENT, Errno::EACCES
    next
  end
end

.protect_live_start_row_paths(paths, repo_root) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 193

def protect_live_start_row_paths(paths, repo_root)
  history_paths = [
    DispatchHistory.path_for(repo_root),
    DispatchHistory.global_path
  ].uniq

  history_paths.each do |path|
    live_start_records(path).each do |record|
      protect(paths, record["events_log_path"])
      protect(paths, record["output_log_path"])
      protect_derived_session_paths(paths, record)
    end
  end
end

.protected_paths(repo_root, current_paths) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 170

def protected_paths(repo_root, current_paths)
  paths = Set.new
  current_paths.each { |path| protect(paths, path) }
  protect_live_registry_paths(paths)
  protect_live_start_row_paths(paths, repo_root)
  paths
end

.prune(repo_root:, current_paths: [], env: ENV, now: Time.now, dry_run: false, force: false) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 55

def prune(repo_root:, current_paths: [], env: ENV, now: Time.now, dry_run: false, force: false)
  limits = Config.retention_limits(repo_root, env: env)
  with_lock do
    last = last_prune_metadata
    if !force && !dry_run && throttled?(last, now)
      return {
        ok: true,
        skipped: true,
        reason: "throttled",
        throttle_seconds: THROTTLE_SECONDS,
        last_prune: last
      }
    end

    protected = protected_paths(repo_root, current_paths)
    report = {
      ok: true,
      skipped: false,
      dry_run: dry_run,
      timestamp: now.utc.iso8601,
      directories: DIRS.to_h do |key, dirname|
        [key.to_sym, prune_directory(
          File.join(STATE_DIR, dirname),
          limits.fetch(key),
          protected,
          now,
          dry_run: dry_run
        )]
      end
    }
    persist_last_prune(report)
    report
  end
end

.prune_directory(dir, limits, protected, now, dry_run:) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 106

def prune_directory(dir, limits, protected, now, dry_run:)
  files = inventory(dir)
  before_bytes = files.sum { |file| file.fetch(:bytes) }
  protected_files = files.select { |file| protected.include?(file.fetch(:path)) }
  deleted = []
  deleted_paths = Set.new
  projected_bytes = before_bytes

  cutoff = now - limits.fetch("max_age_days") * 86_400
  age_candidates = files.reject { |file| protected.include?(file.fetch(:path)) }
    .select { |file| file.fetch(:mtime) < cutoff }
    .sort_by { |file| [file.fetch(:mtime), file.fetch(:path)] }
  age_candidates.each do |file|
    next if deleted_paths.include?(file.fetch(:path))

    if delete_candidate(file, dry_run: dry_run)
      deleted << file
      deleted_paths.add(file.fetch(:path))
      projected_bytes -= file.fetch(:bytes)
    end
  end

  size_candidates = files.reject { |file| protected.include?(file.fetch(:path)) || deleted_paths.include?(file.fetch(:path)) }
    .sort_by { |file| [file.fetch(:mtime), file.fetch(:path)] }
  size_candidates.each do |file|
    break if projected_bytes <= limits.fetch("max_bytes")

    if delete_candidate(file, dry_run: dry_run)
      deleted << file
      deleted_paths.add(file.fetch(:path))
      projected_bytes -= file.fetch(:bytes)
    end
  end

  after_bytes = dry_run ? projected_bytes : inventory(dir).sum { |file| file.fetch(:bytes) }
  {
    path: dir,
    before_count: files.length,
    before_bytes: before_bytes,
    after_count: dry_run ? files.length - deleted.length : inventory(dir).length,
    after_bytes: after_bytes,
    deleted_count: deleted.length,
    deleted_bytes: deleted.sum { |file| file.fetch(:bytes) },
    deleted_paths: deleted.first(MAX_REPORTED_PATHS).map { |file| file.fetch(:path) },
    deleted_paths_truncated: deleted.length > MAX_REPORTED_PATHS,
    protected_count: protected_files.length,
    protected_bytes: protected_files.sum { |file| file.fetch(:bytes) },
    max_age_days: limits.fetch("max_age_days"),
    max_bytes: limits.fetch("max_bytes"),
    over_cap: after_bytes > limits.fetch("max_bytes")
  }
end

.start_key(record) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 232

def start_key(record)
  session_id = record["session_id"].to_s
  return "session:#{session_id}" unless session_id.empty?

  "id:#{record['id']}\0#{record['started_at']}"
end

.status(repo_root:, env: ENV, now: Time.now) ⇒ Object 



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# File 'lib/harnex/retention.rb', line 19

def status(repo_root:, env: ENV, now: Time.now)
  limits = Config.retention_limits(repo_root, env: env)
  {
    ok: true,
    checked_at: now.utc.iso8601,
    config: limits,
    directories: DIRS.to_h do |key, dirname|
      files = inventory(File.join(STATE_DIR, dirname))
      [key, {
        path: File.join(STATE_DIR, dirname),
        count: files.length,
        bytes: files.sum { |file| file.fetch(:bytes) },
        max_age_days: limits.fetch(key).fetch("max_age_days"),
        max_bytes: limits.fetch(key).fetch("max_bytes")
      }]
    end,
    last_prune: last_prune_metadata
  }
end

.throttled?(last, now) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/harnex/retention.rb', line 267

def throttled?(last, now)
  timestamp = last.is_a?(Hash) ? last["timestamp"].to_s : ""
  return false if timestamp.empty?

  now - Time.parse(timestamp) < THROTTLE_SECONDS
rescue ArgumentError
  false
end

.with_lock ⇒ Object 



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# File 'lib/harnex/retention.rb', line 257

def with_lock
  FileUtils.mkdir_p(STATE_DIR)
  File.open(LOCK_PATH, File::RDWR | File::CREAT, 0o644) do |file|
    file.flock(File::LOCK_EX)
    yield
  ensure
    file.flock(File::LOCK_UN) unless file.closed?
  end
end