Module: Legion::Data::Retention

Defined in:
lib/legion/data/retention.rb

Constant Summary collapse

DEFAULT_RETENTION_YEARS = 
7
DEFAULT_ARCHIVE_AFTER_DAYS = 
90

Class Method Summary collapse

Class Method Details

.archive_old_records(table:, date_column: :created_at, archive_after_days: DEFAULT_ARCHIVE_AFTER_DAYS) ⇒ Object 



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# File 'lib/legion/data/retention.rb', line 10

def archive_old_records(table:, date_column: :created_at, archive_after_days: DEFAULT_ARCHIVE_AFTER_DAYS)
  db = Legion::Data.connection
  return { archived: 0, table: table } unless db

  cutoff = Time.now - (archive_after_days * 86_400)
  archive_table = archive_table_name(table)

  ensure_archive_table!(db, table, archive_table)

  count = 0
  db.transaction do
    records = db[table].where(Sequel.lit("#{date_column} < ?", cutoff))
    count = records.count
    if count.positive?
      db[archive_table].multi_insert(records.all)
      records.delete
    end
  end

  Legion::Logging.info "Archived #{count} row(s) from #{table}" if defined?(Legion::Logging) && count.positive?
  { archived: count, table: table }
end

.archive_table_name(table) ⇒ Object 



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# File 'lib/legion/data/retention.rb', line 67

def archive_table_name(table)
  :"#{table}_archive"
end

.purge_expired_records(table:, date_column: :created_at, retention_years: DEFAULT_RETENTION_YEARS) ⇒ Object 



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# File 'lib/legion/data/retention.rb', line 33

def purge_expired_records(table:, date_column: :created_at, retention_years: DEFAULT_RETENTION_YEARS)
  db = Legion::Data.connection
  archive_table = archive_table_name(table)
  return { purged: 0, table: table } unless db&.table_exists?(archive_table)

  cutoff = Time.now - (retention_years * 365 * 86_400)
  expired = db[archive_table].where(Sequel.lit("#{date_column} < ?", cutoff))
  count = expired.count
  expired.delete if count.positive?
  Legion::Logging.info "Purged #{count} expired row(s) from #{archive_table}" if defined?(Legion::Logging) && count.positive?

  { purged: count, table: table }
end

.retention_status(table:, date_column: :created_at) ⇒ Object 



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# File 'lib/legion/data/retention.rb', line 47

def retention_status(table:, date_column: :created_at)
  db = Legion::Data.connection
  archive_table = archive_table_name(table)

  active_count = db&.table_exists?(table) ? db[table].count : 0
  archived_count = db&.table_exists?(archive_table) ? db[archive_table].count : 0

  oldest_active = (db[table].order(Sequel.asc(date_column)).get(date_column) if db&.table_exists?(table) && active_count.positive?)

  oldest_archived = (db[archive_table].order(Sequel.asc(date_column)).get(date_column) if db&.table_exists?(archive_table) && archived_count.positive?)

  {
    table:           table,
    active_count:    active_count,
    archived_count:  archived_count,
    oldest_active:   oldest_active,
    oldest_archived: oldest_archived
  }
end