Class: ICFS::Utils::Check

Inherits:
Object
  • Object
show all
Defined in:
lib/icfs/utils/check.rb

Overview

Check a case for errors

Instance Method Summary collapse

Constructor Details

#initialize(store, log) ⇒ Check

Instance

Parameters:

  • store (Store) —

    The store to check

  • log (Logger) —

    Where to log



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# File 'lib/icfs/utils/check.rb', line 34

def initialize(store, log)
  @store = store
  @log = log
end

Instance Method Details

#check(cid, cur_log, cur_hash, opts = {}) ⇒ Object

Check a case

Parameters:

  • cur_log (Integer) —

    The last log

  • cur_hash (String) —

    The hash of the last log



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# File 'lib/icfs/utils/check.rb', line 98

def check(cid, cur_log, cur_hash, opts={})
  @log.info('ICFS check: case %s'.freeze % cid)

  ent_cur = Set.new
  cse_cur = false
  idx_cur = Set.new
  act_cur = Set.new
  file_cur = Set.new


  # go thru the logs from most current
  lnum = cur_log
  hash_log = cur_hash
  time_log = Time.now.to_i
  while( lnum > 0 )

    # log
    log = _item(
      'log %d'.freeze % lnum,
      :log_read,
      [cid, lnum],
      false,
      hash_log,
      Items::ItemLog,
      [
        ['caseid'.freeze, 0].freeze,
        ['log'.freeze, 1].freeze
      ].freeze,
    )
    if !log
      hash_log = nil
      lnum = lnum - 1
      next
    end

    # check that time decreases
    if log['time'] > time_log
      @log.warn('ICFS check: log %d time inconsistent'.freeze % lnum)
    end

    # entry
    enum = log['entry']['num']
    ent = _item(
      'entry %d-%d' % [enum, lnum],
      :entry_read,
      [cid, enum, lnum],
      ent_cur.include?(enum),
      log['entry']['hash'],
      Items::ItemEntry,
      [
        ['caseid'.freeze, 0].freeze,
        ['entry'.freeze, 1].freeze,
        ['log'.freeze, 2].freeze
      ].freeze,
    )

    # current entry
    unless ent_cur.include?(enum)
      ent_cur.add(enum)
      if ent['files']
        ent['files'].each do |fd|
          file_cur.add( '%d-%d-%d'.freeze % [enum, fd['num'], fd['log']] )
        end
      end
    end

    # index
    if log['index']
      xnum = log['index']['num']
      idx = _item(
        'index %d-%d'. freeze % [xnum, lnum],
        :index_read,
        [cid, xnum, lnum],
        idx_cur.include?(xnum),
        log['index']['hash'],
        Items::ItemIndex,
        [
          ['caseid'.freeze, 0].freeze,
          ['index'.freeze, 1].freeze,
          ['log'.freeze, 2].freeze
        ]
      )
      idx_cur.add(xnum)
    end

    # action
    if log['action']
      anum = log['action']['num']
      act = _item(
        'action %d-%d'.freeze % [anum, lnum],
        :action_read,
        [cid, anum, lnum],
        act_cur.include?(anum),
        log['action']['hash'],
        Items::ItemAction,
        [
          ['caseid'.freeze, 0].freeze,
          ['action'.freeze, 1].freeze,
          ['log'.freeze, 2].freeze
        ]
      )
      act_cur.add(anum)
    end

    # case
    if log['case_hash']
      cse = _item(
        'case %d'.freeze % lnum,
        :case_read,
        [cid, lnum],
        cse_cur,
        log['case_hash'],
        Items::ItemCase,
        [
          ['caseid'.freeze, 0].freeze,
          ['log'.freeze, 1].freeze
        ]
      )
      cse_cur = true
    end

    # files
    if log['files_hash']
      fnum = 0
      log['files_hash'].each do |hash|
        fnum = fnum + 1
        fn = '%d-%d-%d'.freeze % [enum, fnum, lnum]
        cur = file_cur.include?(fn)
        file_cur.delete(fn) if cur

        @log.debug('ICFS check: file %s'.freeze % fn)

        # read/size
        if opts[:hash_all] || (cur && opts[:hash_current])
          fi = @store.file_read(cid, enum, lnum, fnum)
        elsif opts[:stat_all] || (cur && opts[:stat_current])
          fi = @store.file_size(cur, enum, lnum, fnum)
        else
          fi = true
        end

        # missing
        if !fi
          if cur
            @log.error('ICFS check: file %s missing and current'.freeze %
              fn)
          else
            @log.warn('ICFS check: file %s missing and historical'.freeze %
              fn)
          end
        end

        # hash
        if fi.is_a?(File)
          # check
          if hash != ICFS.hash_temp(fi)
            @log.error('ICFS check: file %s hash bad'.freeze % fn)
          end

          # close
          if fi.respond_to?(:close!)
            fi.close!
          else
            fi.close
          end
        end
      end
    end

    # previous log
    lnum = lnum - 1
    hash_log = log['prev']
  end

  # check for any non-existant current files
  unless file_cur.empty?
    file_cur.each do |fn|
      @log.error('ICFS check: file %s current but not logged'.freeze % fn)
    end
  end

  @log.debug('ICFS check: case %s complete'.freeze % cid)
end