1. 03 Apr, 2017 1 commit
    • Kirill Smelkov's avatar
      FileStorage: Report problem on read-only open of non-existent file · 56c96a11
      Kirill Smelkov authored
      ... instead of silently creating empty database on such opens.
      
      Use-case for this are utilities like e.g. zodbdump and zodbcmp which
      expect such storage opens to fail so that the tool can know there is no
      such storage and report it to user.
      
      In contrast current state is: read-only opens get created-on-the-fly
      empty storage with no content, but which can be iterated over without
      getting any error.
      
      This way e.g. `zodbdump non-existent.fs` produces empty output _and_
      exit code 0 which is not what caller expects.
      
      (cherry picked from commit 30bbabf1)
      56c96a11
  2. 06 Feb, 2017 1 commit
  3. 02 Feb, 2017 5 commits
  4. 27 Nov, 2016 2 commits
  5. 25 Nov, 2016 1 commit
  6. 27 Sep, 2016 2 commits
  7. 12 Sep, 2016 2 commits
  8. 09 Sep, 2016 1 commit
  9. 21 Aug, 2016 2 commits
  10. 04 Aug, 2016 1 commit
  11. 27 Jul, 2016 2 commits
  12. 26 Jul, 2016 1 commit
  13. 13 Jul, 2016 1 commit
  14. 12 Jul, 2016 8 commits
    • Julien Muchembled's avatar
      fstail: print the txn offset and header size, instead of only the data offset · 3807ace8
      Julien Muchembled authored
      Before:
      
          2016-07-01 09:41:50.416574: hash=d7101c5ee7b8e412d7b6d54873204421e09b7f34
          user='' description='' length=1629 offset=58990284
      
      After:
      
          2016-07-01 09:41:50.416574: hash=d7101c5ee7b8e412d7b6d54873204421e09b7f34
          user='' description='' length=1629 offset=58990261 (+23)
      
      The structure of a FileStorage DB is such that it's easy to revert the last
      transactions, by truncating the file at the right offset. With the above
      change, `fstail` can now be used to get this offset.
      
      In the above example:
      
          truncate -s 58990261 Data.fs
      
      would delete the transaction and all those after.
      3807ace8
    • Jim Fulton's avatar
      Merge pull request #89 from zopefoundation/undo-refactor · 75bae1a6
      Jim Fulton authored
      Refactored FileStorage transactional undo
      75bae1a6
    • Jim Fulton's avatar
      removed out of date comment · b563487e
      Jim Fulton authored
      b563487e
    • Jim Fulton's avatar
      Merge pull request #86 from NextThought/handle-serials4 · e080bdcc
      Jim Fulton authored
      Fix handle_all_serials for the new and old protocols.
      e080bdcc
    • Jason Madden's avatar
      Update comment. [skip ci] · c13649da
      Jason Madden authored
      c13649da
    • Jim Fulton's avatar
      changes · d64a0cbf
      Jim Fulton authored
      d64a0cbf
    • Jim Fulton's avatar
      Refactored FileStorage transactional undo · d717a685
      Jim Fulton authored
      As part of a project to provide object-level commit locks for ZEO, I'm
      refactiring FileStorage to maintain transaction-specific data in
      Tranaction.data.  This involved undo.  In trying to figure this out, I
      found:
      
      - A bug in _undoDataInfo, which I verified with some tests and
      
      - _transactionalUndoRecord was maddeningly difficult to reason about
        (and thus change).
      
      I was concerned less by the bug than my inability to know whether a
      change to the code would be correct.
      
      So I refactored the code, mainly transactionalUndoRecord, to make the
      code easier to understand, fixing some logic errors (I'm pretty sure)
      along the way.  This included lots of comments. (Comments are much
      easier to compose when you're working out logic you didn't
      understand.)
      
      In addition to makeing the code cleaner, it allows undo to be handled
      in cases that weren't handled before.
      d717a685
    • Jim Fulton's avatar
      Long lines. Grrrr. · a6c1713d
      Jim Fulton authored
      a6c1713d
  15. 09 Jul, 2016 1 commit
  16. 08 Jul, 2016 1 commit
  17. 05 Jul, 2016 3 commits
  18. 04 Jul, 2016 5 commits