1. 18 Jan, 2023 2 commits
  2. 18 May, 2022 2 commits
    • Kirill Smelkov's avatar
      go/neo/t/neotest: Use python -c 'print ...' in a way that works on both py2 and py3 · 789c9ed9
      Kirill Smelkov authored
      Without parenthesis it was failing on py3:
      	(neo) (py3.venv) (g.env) kirr@deca:~/src/neo/src/lab.nexedi.com/kirr/neo/go/neo/t$ ./neotest info-local
      	date:   Wed, 18 May 2022 11:05:50 +0300
      	xnode:  kirr@deca.navytux.spb.ru (2401:5180:0:af::1 (+ 1·ipv4))
      	uname:  Linux deca 5.10.0-13-amd64 #1 SMP Debian 5.10.106-1 (2022-03-17) x86_64 GNU/Linux
      	cpu:    Intel(R) Core(TM) i7-7600U CPU @ 2.80GHz
      	  File "<string>", line 1
      	    print '%.2fGHz' % (400000 / 1E6)
      	SyntaxError: invalid syntax
    • Kirill Smelkov's avatar
      go/neo/t/tzodb.py: Fix zhash for Python3 · 30329f5a
      Kirill Smelkov authored
      On py3 dict.keys() returns iterator instead of list:
          $ ./tzodb.py zhash
          Traceback (most recent call last):
            File "/home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/neo/t/./tzodb.py", line 141, in <module>
            File "/home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/neo/t/./tzodb.py", line 138, in main
            File "/home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/neo/t/./tzodb.py", line 59, in zhash
              optv, argv = getopt(sys.argv[2:], "h", ["help", "check=", "bench="] + hashRegistry.keys())
          TypeError: can only concatenate list (not "dict_keys") to list
  3. 25 Nov, 2021 1 commit
  4. 04 Oct, 2021 5 commits
  5. 08 Sep, 2021 4 commits
    • Kirill Smelkov's avatar
      go/internal/xtesting: Add missing X · e7bea476
      Kirill Smelkov authored
      staticcheck says:
      	xtesting.go:386:2: this value of err is never used (SA4006)
    • Kirill Smelkov's avatar
      go/zodb/{fs1,zeo}: ~staticcheck · 3ff4eb14
      Kirill Smelkov authored
      fs1/format.go:204:2: only the first constant in this group has an explicit type (SA9004)
      zeo/proto.go:56:2: only the first constant in this group has an explicit type (SA9004)
    • Kirill Smelkov's avatar
      go/zodb/btree: Fix missing return on data-consistency error · ca630163
      Kirill Smelkov authored
      staticcheck reports
          ziobtree.go:606:4: Errorf is a pure function but its return value is ignored (SA4017)
          ziobtree.go:626:4: Errorf is a pure function but its return value is ignored (SA4017)
          zlobtree.go:606:4: Errorf is a pure function but its return value is ignored (SA4017)
          zlobtree.go:626:4: Errorf is a pure function but its return value is ignored (SA4017)
    • Kirill Smelkov's avatar
      go/zodb, go/zodb/btree: Fix go generate after rename on zodbtools side · 3d27ed5d
      Kirill Smelkov authored
      run_with_zodb3py2_compat was renamed to run_with_zodb4py2_compat in
      nexedi/zodbtools@c59a54ca .
      Without the fix go genrate was failing as
          (neo) (z-dev) (g.env) kirr@deca:~/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/btree$ go generate
          Traceback (most recent call last):
            File "./testdata/gen-testdata", line 26, in <module>
              from zodbtools.test.gen_testdata import run_with_zodb3py2_compat
          ImportError: cannot import name run_with_zodb3py2_compat
          (neo) (z-dev) (g.env) kirr@deca:~/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb$ go generate
          Traceback (most recent call last):
            File "./py/pydata-gen-testdata", line 24, in <module>
              from zodbtools.test.gen_testdata import run_with_zodb3py2_compat
          ImportError: cannot import name run_with_zodb3py2_compat
      This amends commit fc69e00d (go/zodb/fs1: Fix Python database generator
      to work with recent zodbtools).
  6. 20 Jul, 2021 1 commit
  7. 24 May, 2021 6 commits
    • Kirill Smelkov's avatar
      go/zodb: Prevent newly-created not-yet committed objects to go to ghost on deactivate · bb618ce1
      Kirill Smelkov authored
      When object is just created, it is not yet assigned an OID, but can be
      reachable from other objects. The code that processes transaction can
      reach to that new object and try to PActivate/PDeactivate it. And
      currently PDeactivate will drop the object state completely.
      Another example of object without an OID is Bucket embedded into a Tree
      object. There, the code that scans the tree can reach to that bucket and
      try to activate/deactivate it, leading, again, to dropping state of that bucket.
      -> Fix it.
    • Kirill Smelkov's avatar
      go/zodb: Fix PActivate not to panic after an error · 67f0d2cd
      Kirill Smelkov authored
      Persistent.PActivate used to panic when called the second time, if the
      first time it hit an error. WCFS hit this in practice via object, that was
      previously accessed and pinned into the cache, but later deleted in the
      -> Fix PActivate to reset .loading on an error, so that next time PActivate is
      called, it tries to trigger load again instead of panicking. Change doload
      criteria from
      	state==GHOST && refcnt==1
      	state==GHOST && loading==nil
      because now, after failed PActivate, refcnt can be != 0, if there are several
      other PActivate calls that were waiting for the failed PActivate but did not
      yet woke up.
      Here is how added test fails without the fix:
          --- FAIL: TestActivateAfterDelete (1.65s)
          panic: t.zodb.MyObject(0000000000000065): activate: need to load, but .loading != nil [recovered]
                  panic: t.zodb.MyObject(0000000000000065): activate: need to load, but .loading != nil
          goroutine 10085 [running]:
          testing.tRunner.func1.2(0x649020, 0xc000520660)
                  /home/kirr/src/tools/go/go/src/testing/testing.go:1143 +0x332
                  /home/kirr/src/tools/go/go/src/testing/testing.go:1146 +0x4b6
          panic(0x649020, 0xc000520660)
                  /home/kirr/src/tools/go/go/src/runtime/panic.go:965 +0x1b9
          lab.nexedi.com/kirr/neo/go/zodb.(*Persistent).PActivate(0xc0001184d0, 0x6e8360, 0xc00019ac90, 0x0, 0x0)
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/persistent.go:191 +0xce5
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/persistent_test.go:786 +0x72c
    • Kirill Smelkov's avatar
      go/zodb/fs1tools: Verify · 5a26fb31
      Kirill Smelkov authored
      Add utility to verify FileStorage data for consistency.
      To verify we just need to iterate through all records, because
      FileStorage driver performs all consistency checks by itself.
      Mimic normal output to be the same as in fstest from ZODB/py.
      Example runs of fstest.py and `fs1 verify` on a broken file:
          $ python ~/src/wendelin/z/ZODB/src/ZODB/scripts/fstest.py -v 1.fs
                   4: transaction tid 0x03e044f6448c8022 #0
                 213: transaction tid 0x03e044f646e044bb #1
          1.fs has data records that extend beyond the transaction record; end at 466
          $ fs1 verify -v 1.fs
                   4: transaction tid 0x03e044f6448c8022 #0
                 213: transaction tid 0x03e044f646e044bb #1
          2021/05/24 12:43:37 fsverify: 1.fs: 1.fs: transaction record @355: -> (iter data): 1.fs: data record @416: check: data record [..., 466) overlaps txn boundary [..., 458)
      As can be seen, in fs1 case, the error contains more details: [start, end) of
      both mismatching transaction and data records.
      In addition to fstest-like verbosity, add progress-mode, where % of total
      completion is printed in a style similar to one used by `fs1 verify-index`.
      The Go-based implementation is also faster even when data is on HDD. For
      example on a 73GB database provided by @jerome[1] fsrefs.py takes ~15 minutes
      to run and occupy ~70-100% of CPU. On the other hand `fs1 verify` takes ~7
      minutes to run and occupy ~ 20-30% of CPU.
      Tests pending.
      [1] nexedi/zodbtools!19 (comment 129480)
    • Kirill Smelkov's avatar
      go/zodb/fs1tools: Dumper += DumpEndOK · c66dc12d
      Kirill Smelkov authored
      Some dumpers might want to print something at the end of their dump.
      We will need this functionality for Verify (see next patch).
    • Kirill Smelkov's avatar
    • Kirill Smelkov's avatar
      go/zodb: tests: Teach tDB.Commit to return committed TID · c68c0994
      Kirill Smelkov authored
      And use that in the callers.
  8. 19 May, 2021 1 commit
  9. 10 May, 2021 1 commit
  10. 26 Mar, 2021 11 commits
    • Kirill Smelkov's avatar
      go/*: Cosmetics · 890290e6
      Kirill Smelkov authored
    • Kirill Smelkov's avatar
    • Kirill Smelkov's avatar
      go/zodb/demo: New package that provides base+δ storages overlay · 4fb6bd0a
      Kirill Smelkov authored
      For Load demo.Storage implementation is similar to DemoStorage in
      ZODB/py with fixes "cherry-picked" from:
      - https://github.com/zopefoundation/ZODB/issues/318
        (DemoStorage does not take whiteouts into account -> leading to data corruption)
      - https://github.com/zopefoundation/ZODB/pull/323
        (loadAt + fix for the above issue)
      For safety demo.Storage - contrary to DemoStorage/py - actually verifies
      that for demo=base+δ δ comes strictly after base and that base remains
      URI schema follows XRI Cross-references approach and is
      https://en.wikipedia.org/wiki/Extensible_Resource_Identifier provides
      some related details and examples.
      For ZODB/py corresponding pull-request for zodburi to support demo: URI
      scheme has been made here: https://github.com/Pylons/zodburi/pull/29 .
      Tests need:
      - recent zodbtools with zodbrestore:
      - ZODB with support for DemoStorage.deleteObject
      On Go side demo storage is needed for wendelin.core 2 because ERP5 uses
      DemoStorage to run tests.
    • Kirill Smelkov's avatar
      go/zodb: Provide OpenDriver in addition to Open · 954321b2
      Kirill Smelkov authored
      This is low-level API to open IStorageDriver instead of IStorage.
      Demo storage will need this.
      Maybe it would be a good idea to move drivers-related functionality into
      separate package in the future.
    • Kirill Smelkov's avatar
      go/zodb/fs1: Report URL with file:// schema included · 5aa4372f
      Kirill Smelkov authored
      In ZODB/go when there is no schema in zurl, open automatically prepends
      file:// . However filename itself could contain ":" and so generally
      speaking it is incorrect to return URL without file:// schema prepended
      to file name.
      Another reason to always use fully-constructed URLs with schema, is
      interoperability with ZODB/py - there zodburi, when given zurl without
      schema, does not make any assumption that it is of file:// kind and
      rejects opening such URIs.
    • Kirill Smelkov's avatar
      go/zodb: Fix Open to detect lack of schema only by ":" instead of by "://" · d904eb10
      Kirill Smelkov authored
      An URI schema is required to have ":" after it, but - even if frequently
      used in practice - not //. We will soon introduce "demo:" URI scheme
      that comes without //, so fix Open to detect schema presence just by ":"
      and not to fixup "demo:..." url to "file://demo:..." automatically.
    • Kirill Smelkov's avatar
      go/zodb: Fix IStorage implementation not to deadlock driver if watcher fails · 003c44cb
      Kirill Smelkov authored
      Before the patch if storage.watcher fails, storage.driver.Close is not
      called, and so the driver will continue to send to .drvWatchq, but noone
      is receiving from it.
      a5dbb92b (go/zodb: Require drivers to close watchq on Close), provides
      the guarantee that the driver will stop sending on drvWatchq right after
      drv.Close call.
    • Kirill Smelkov's avatar
      go/zodb/zeo: Fix it to provide "Close vs watchq" guaranty · 58e0142c
      Kirill Smelkov authored
      Provide guaranty that Close forces the driver to stop sending to watchq
      and to close it. See a5dbb92b ("go/zodb: Require drivers to close watchq
      on Close") for details.
      Without the fix TestWatch fails with test timeout:
          panic: test timed out after 30s
          # Close waits for serve to stop
          goroutine 93 [semacquire]:
                  /home/kirr/src/tools/go/go/src/runtime/sema.go:56 +0x45
                  /home/kirr/src/tools/go/go/src/sync/waitgroup.go:130 +0x65
          lab.nexedi.com/kirr/neo/go/zodb/storage/zeo.(*zLink).Close(0xc0001520f0, 0x1313, 0x1)
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zrpc.go:159 +0x47
          lab.nexedi.com/kirr/neo/go/zodb/storage/zeo.(*zeo).Close(0xc000313680, 0xc000107c78, 0x1)
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zeo.go:526 +0x2e
          lab.nexedi.com/kirr/neo/go/internal/xtesting.DrvTestWatch(0xc000082c00, 0xc0000aa2a0, 0x24, 0x6a4a38)
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/internal/xtesting/xtesting.go:442 +0xdb5
          lab.nexedi.com/kirr/neo/go/zodb/storage/zeo.TestWatch.func1(0xc000082c00, 0x6e3498, 0xc00009a380)
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zeo_test.go:270 +0x99
          lab.nexedi.com/kirr/neo/go/zodb/storage/zeo.withZEOSrv.func2.1(0xc0000a4168, 0x16)
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zeo_test.go:207 +0xfb
          lab.nexedi.com/kirr/neo/go/zodb/storage/zeo.withZEOSrv.func1(0xc000082c00, 0xc00009c180)
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zeo_test.go:186 +0x129
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zeo_test.go:199 +0x10e
          testing.tRunner(0xc000082c00, 0xc00009c160)
                  /home/kirr/src/tools/go/go/src/testing/testing.go:1194 +0xef
          created by testing.(*T).Run
                  /home/kirr/src/tools/go/go/src/testing/testing.go:1239 +0x2b3
          # serve is stuck in invalidateTransaction doing watchq<-
          goroutine 26 [chan send]:
          lab.nexedi.com/kirr/neo/go/zodb/storage/zeo.(*zeo).invalidateTransaction(0xc000313680, 0x6417e0, 0xc000323b60, 0x0, 0x0)
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zeo.go:176 +0x373
          lab.nexedi.com/kirr/neo/go/zodb/storage/zeo.(*zLink).serveRecv1(0xc0001520f0, 0xc000393890, 0x0, 0x0)
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zrpc.go:225 +0x4b4
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zrpc.go:176 +0x8d
          created by lab.nexedi.com/kirr/neo/go/zodb/storage/zeo.(*zLink).start
                  /home/kirr/src/neo/src/lab.nexedi.com/kirr/neo/go/zodb/storage/zeo/zrpc.go:99 +0xc8
    • Kirill Smelkov's avatar
      go/zodb/fs1: Fix it to provide "Close vs watchq" guaranty · 88848c31
      Kirill Smelkov authored
      Provide guaranty that Close forces the driver to stop sending to watchq
      and to close it. See a5dbb92b ("go/zodb: Require drivers to close watchq
      on Close") for details.
    • Kirill Smelkov's avatar
      go/zodb: Require drivers to close watchq on Close · a5dbb92b
      Kirill Smelkov authored
      If we don't require drivers to stop sending to watchq after Close, there
      could be many deadlock scenarios, for example:
      - client called drv.Close(); no longer listens to watchq; driver is
        stuck sending to watchq, or
      - client called drv.Close(), which itself waits for tasks spawned inside
        driver to complete, which are stuck sending to watchq because client
        no longer does <-watchq.
      The change is similar in spirit to safety guaranty provided by high-level
      Watcher where after DelWatch call it is guaranteed that there will be no
      more sends to subscribed watchq (see c41c2907 "go/zodb: High-level
      watching - initial draft") for details.
      All drivers don't provide requested guarantee yet.
      We'll be fixing them one-by-one in followup commits.
    • Kirill Smelkov's avatar
      go/internal/xtesting: Fix FatalIf to return a helper · 20d48ded
      Kirill Smelkov authored
      Else, on an error, it is the lineno of `t.Fatal(err)` inside FatalIf
      that is printed, not the line number inside user test.
  11. 17 Mar, 2021 4 commits
    • Kirill Smelkov's avatar
      go/zodb/fs1: Fix access to whiteout · 543041a3
      Kirill Smelkov authored
      A data record with len(data)=0 and backpointer=0 is considered by
      FileStorage/py as "no data":
      Even though currently it is not possible to create such data record via
      FileStorage(py).deleteObject (becase it raises POSKeyError if there is
      no previous object revision), being able to use such data records is
      semantically useful in overlayed DemoStorage settings, where δ part
      marks an object that exists only in base with delete record whiteout.
      It is also generally meaningfull to be able to create "delete" record
      even if object was not previously existing: "deleteObject" is actually
      similar to "store" (and so should be better named as "storeDelete"). If
      one wants to store deletion, there should not be a reason to reject it,
      because deleteObject already has seatbelt in the form of oldserial, and
      if the user calls deleteObject(oid, oldserial=z64), he/she is already
      telling that "I know that this object does not exist in this storage
      (oldserial=z64), but still please create a deletion record for it". Once
      again this is useful in overlayed DemoStorage settings described above.
      For the reference, such whiteout deletion records pass ZODB/scripts/fstest just fine.
      Even though FileStorage/py loads such data records just fine, on
      FileStorage/go side it was not the case - DataHeader.LoadBackRef, even
      with backpointer=0, was verifying that backpointer to be valid and
      failing seeing it might overlap with current transaction:
          === RUN   TestLoadWhiteout
          2021/03/17 06:40:58 index load: open testdata/whiteout.fs.index: no such file or directory
          2021/03/17 06:40:58 testdata/whiteout.fs: index rebuild...
              filestorage_test.go:398: load 0000000000000017:0000000000000001: bad err:
                  have: testdata/whiteout.fs: load 0000000000000017:0000000000000001: testdata/whiteout.fs: data record @27: check: backpointer (0) overlaps with txn (4)
                  want: testdata/whiteout.fs: load 0000000000000017:0000000000000001: 0000000000000001: object was not yet created
      It was a thinko: backPos==0 was already kind of handled in LoadBackRef,
      but only in one verification case. -> Fix all checks not to trigger when
      seeing backPos=0. DataHeader.LoadBack - the caller of LoadBackRef -
      already handles returned backPos=0 as "no data".
    • Kirill Smelkov's avatar
      go/zodb/fs1tools: tests: Use fresh dumper for each subtest · a708663d
      Kirill Smelkov authored
      We were reusing Dumper instance in between testDump subtests. This was
      not noticed, as it was only "1" and then "empty" case, because "emtpy"
      has no transactions. However in the next patch we'll add another
      subcase, and if the dumper instance is not reset, it will think that it
      starts from transaction number non-zero, which would differ from fresh
      dumper output.
      -> Fix it.
    • Kirill Smelkov's avatar
      go/zodb/fs1: Fix Python database generator to work with recent zodbtools · fc69e00d
      Kirill Smelkov authored
      As Zodbtools dropped ZODB3 support its run_with_zodb3py2_compat was
      renamed to run_with_zodb4py2_compat:
    • Kirill Smelkov's avatar
      go/zodb/zeo: msgpack.{Encode,Decode} -> msgpack.{Marshal,Unmarshal} · 363e6e61
      Kirill Smelkov authored
      Encode/decode was deprecated and removed in recent github.com/shamaton/msgpack.
  12. 19 Feb, 2021 1 commit
  13. 18 Jan, 2021 1 commit