Commit Graph

116 Commits

Author SHA1 Message Date
Jakob Borg
68c1a0b9b4 lib/ignore, lib/model: Use an interface to detect file changes, improving tests
This solves the erratic test failures on model.TestIgnores by ensuring
that the ignore patterns are reloaded even in the face of unchanged
timestamps.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4208
2017-06-11 10:27:12 +00:00
Jakob Borg
d6fbfc3545 lib/fs, lib/model, lib/scanner: Make scans cancellable (fixes #3965)
The folder already knew how to stop properly, but the fs.Walk() didn't
and can potentially take a very long time. This adds context support to
Walk and the underlying scanning stuff, and passes in an appropriate
context from above. The stop channel in model.folder is replaced with a
context for this purpose.

To test I added an infiniteFS that represents a large amount of data
(not actually infinite, but close) and verify that walking it is
properly stopped. For that to be implemented smoothly I moved out the
Walk function to it's own type, as typically the implementer of a new
filesystem type might not need or want to reimplement Walk.

It's somewhat tricky to test that this actually works properly on the
actual sendReceiveFolder and so on, as those are started from inside the
model and the filesystem isn't easily pluggable etc. Instead I've tested
that part manually by adding a huge folder and verifying that pause,
resume and reconfig do the right things by looking at debug output.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4117
2017-04-26 00:15:23 +00:00
Jakob Borg
4253f22680 lib/scanner: Use fs.Filesystem for all operations
One more step on the path of the great refactoring. Touches rwfolder a
little bit since it uses the Lstat from fs as well, but mostly this is
just on the scanner as rwfolder is scheduled for a later refactor.

There are a couple of usages of fs.DefaultFilesystem that will in the
end become a filesystem injected from the top, but that comes later.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4070
LGTM: AudriusButkevicius, imsodin
2017-04-01 09:04:11 +00:00
kwhite17
1caa683ec1 lib/scanner: Stopped outputting rescan debug message if file doesn't exist locally (fixes #1350)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4028
2017-03-18 00:36:54 +00:00
Jakob Borg
5c27796471 lib/model, lib/scanner: Properly ignore symlinks on Windows (fixes #4035)
Adds a unit test to ensure we don't scan symlinks on Windows. For the
rwfolder, trusts that the logic in the invalid check is correct and that
the check is actually called from the need loop.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4042
2017-03-18 00:25:47 +00:00
HairyFotr
c56c48a777 all: Correct various typos
Skip-check: authors

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4005
2017-02-25 08:12:13 +00:00
Jakob Borg
f7fc0c1d3e all: Update license url to https (ref #3976) 2017-02-09 08:04:16 +01:00
Jakob Borg
c4ba580cbb all: Remove symlink support on Windows, SymlinksEnabled config
After this change,

- Symlinks on Windows are always unsupported. Sorry.

- Symlinks are always enabled on other platforms. They are just a small
  file like anything else. There is no need to special case them. If you
  don't want to sync some symlinks, ignore them.

- The protocol doesn't differentiate between different "types" of
  symlinks. If that distinction ever does become relevant the individual
  devices can figure it out by looking at the destination when they
  create the link.

It's backwards compatible in that all the old symlink types are still
understood to be symlinks, and the new SYMLINK type is equivalent to the
old SYMLINK_UNKNOWN which was always a valid way to do it.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3962
LGTM: AudriusButkevicius
2017-02-07 08:34:24 +00:00
Audrius Butkevicius
dd78177ae0 scanner: Allow disabling weak hash in scanning (fixes #3891)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3905
2017-01-23 13:50:32 +00:00
Jakob Borg
68f1c6ccab lib/scanner: Avoid per iteration allocations in Blocks()
Resetting the io.LimitReader is better than creating a new one on every
iteration.
2017-01-18 18:43:00 +01:00
Jakob Borg
bd1c29ee32 lib/scanner, vendor: Fix previous commit
Can't do what I did, as the rolling function is not the same as the
non-rolling one. Instead this uses an improved version of the rolling
adler32 to accomplish the same thing. (PR filed on upstream, so should
be able to use that directly in the future.)
2017-01-18 11:57:01 +01:00
Jakob Borg
9b1c592fb7 lib/scanner: Speed up weak hash
The rolling version of adler32 is just a wrapper around the standard
hash/adler32 when used in a non-rolling fashion, but it's inefficient as
it allocates a new hash instance for every Write(). This uses the
default version instead in the block hasher, and adds a test to verify
the result is the same as they were before. It reduces allocations by
88% and increases speed about 5%.

	benchmark               old ns/op     new ns/op     delta
	BenchmarkHashFile-8     64434698      61303647      -4.86%

	benchmark               old MB/s     new MB/s     speedup
	BenchmarkHashFile-8     276.65       290.78       1.05x

	benchmark               old allocs     new allocs     delta
	BenchmarkHashFile-8     1238           150            -87.88%

	benchmark               old bytes     new bytes     delta
	BenchmarkHashFile-8     17877363      49292         -99.72%
2017-01-18 10:33:17 +01:00
Simon Frei
dbb3a34887 lib/ignore: Centralize handling of temporary filenames (fixes #3899)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3901
LGTM: calmh, AudriusButkevicius
2017-01-17 07:33:48 +00:00
Jakob Borg
7a16dbd31d lib/scanner: Fix previous commit: don't stop scan completely 2017-01-05 15:05:49 +01:00
Jakob Borg
926c88cfc4 lib/scanner: Never, ever descend into symlinks (ref #3857)
On Windows we would descend into SYMLINKD type links when we scanned
them successfully, as we would return nil from the walk function and the
filepath.Walk iterator apparently thought it OK to descend into the
symlinked directory.

With this change we always return filepath.SkipDir no matter what.

Tested on Windows 10 as admin, does what it should.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3875
2017-01-05 13:26:29 +00:00
Audrius Butkevicius
29d010ec0e lib/model, lib/weakhash: Hash using adler32, add heuristic in puller
Adler32 is much faster, and the heuristic avoid the obvious cases where it
will not help.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3872
2017-01-04 21:04:13 +00:00
Jakob Borg
2ebd6ad77f lib/scanner: Don't stop byte counter ticks before scan is done 2017-01-03 15:03:32 +01:00
Jakob Borg
f5a310ad64 Revert "lib/model: Handle filename conflicts on Windows."
This reverts commit 01e50eb3fa.
2016-12-23 11:10:58 +01:00
Unrud
01e50eb3fa lib/model: Handle filename conflicts on Windows.
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3810
LGTM: calmh
2016-12-22 23:04:53 +00:00
Nathan Morrison
0725e3af38 all: Add a global change list
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3694
2016-12-21 16:35:20 +00:00
Jakob Borg
47f22ff3e5 build: Enable gometalinter "unconvert" check 2016-12-21 14:53:45 +01:00
Audrius Butkevicius
0582836820 lib/model, lib/scanner: Efficient inserts/deletes in the middle of the file
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3527
2016-12-14 23:30:29 +00:00
Jakob Borg
7b07ed6580 lib/model, lib/protocol, lib/scanner: Include symlink target in index, pull symlinks synchronously
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3792
2016-12-09 18:02:18 +00:00
Jakob Borg
e3cf718998 lib/ignore: Add central check for internal files, used in scanning, pulling and requests
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3779
2016-12-01 14:00:11 +00:00
Jakob Borg
d328e0fb75 cmd/syncthing: Add selectable sha256 package (fixes #3613, fixes #3614)
This adds autodetection of the fastest hashing library on startup, thus
handling the performance regression. It also adds an environment
variable to control the selection, STHASHING=standard (Go standard
library version, avoids SIGILL crash when the minio library has bugs on
odd CPUs), STHASHING=minio (to force using the minio version) or unset
for the default autodetection.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3617
2016-09-23 19:33:54 +00:00
Jakob Borg
5e99d38412 all: Use github.com/minio/sha256-simd
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3581
2016-09-09 09:57:51 +00:00
Jakob Borg
18cc7a663b lib: Remove osutil.Remove & osutil.RemoveAll (fixes #3513)
These are no longer required with Go 1.7. Change made by removing the
functions, doing a global s/osutil.Remove/os.Remove/.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3514
2016-08-16 10:01:58 +00:00
Jakob Borg
ea87bcefd6 lib/protocol, lib/model: Implement high precision time stamps (fixes #3305)
This adds a new nanoseconds field to the FileInfo, populates it during
scans and sets the non-truncated time in Chtimes calls.

The actual file modification time is defined as modified_s seconds +
modified_ns nanoseconds. It's expected that the modified_ns field is <=
1e9 (that is, all whole seconds should go in the modified_s field) but
not really enforced. Given that it's an int32 the timestamp can be
adjusted += ~2.9 seconds by the modified_ns field...

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3431
2016-08-06 13:05:59 +00:00
Jakob Borg
0655991a19 lib/db, lib/fs, lib/model: Introduce fs.MtimeFS, remove VirtualMtimeRepo
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3479
2016-08-05 17:45:45 +00:00
Jakob Borg
66a506e72b lib/scanner: Correctly scan symlinks (fixes #3445)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3446
2016-07-26 11:55:25 +00:00
Jakob Borg
7aaa1dd8a3 lib/scanner: Recheck file size and modification time after hashing (ref #3440)
To catch the case where the file changed. Also make sure we never let a
size-vs-blocklist mismatch slip through.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3443
2016-07-26 08:51:39 +00:00
Jakob Borg
2a6f164923 lib/scanner: When scanning a file, stick to the size given by Lstat (fixes #3440)
Otherwise if the file grows during scanning the block list will be out
of sync with the stated size and things get confused. We could fixup the
size afterwards based on the block list, but then we might see other
inconsistencies as the mtime should have changed to reflect the new size
etc. Better stick to the original state and let the next scan pick up
the change.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3442
2016-07-25 19:16:49 +00:00
Jakob Borg
3176629410 cmd, lib: Fix ineffectual assignments (ineffasign) and comment spelling
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3405
2016-07-15 14:23:20 +00:00
Jakob Borg
fa0101bd60 lib/protocol, lib/discover, lib/db: Use protocol buffer serialization (fixes #3080)
This changes the BEP protocol to use protocol buffer serialization
instead of XDR, and therefore also the database format. The local
discovery protocol is also updated to be protocol buffer format.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3276
LGTM: AudriusButkevicius
2016-07-04 10:40:29 +00:00
Jakob Borg
f343c8ba36 lib/model, lib/scanner: Silence vet warnings
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3333
2016-06-20 21:00:39 +00:00
Jakob Borg
21e116aa45 lib/scanner: Refactor scanner.Walk API
The old usage pattern was to create a Walker with a bunch of attributes,
then call Walk() on it and nothing else. This extracts the attributes
into a Config struct and exposes a Walk(cfg Config) method instead, as
there was no reason to expose the state-holding walker type.

Also creates a few no-op implementations of the necessary interfaces
so that we can skip nil checks and simiplify things here and there.

Definitely look at this diff without whitespace.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3060
2016-05-09 18:25:39 +00:00
klemens
bd41e21c26 all: Correct spelling in comments
Skip-check: authors pr-build-mac

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3056
2016-05-08 10:54:22 +00:00
Audrius Butkevicius
2eb8a9ef56 all: Dead code cleanup 2016-04-09 01:10:31 +00:00
Audrius Butkevicius
5a98af622d lib/ignore: Implement deletable ignores using (?d) prefix (fixes #1362) 2016-04-07 09:34:07 +00:00
Jakob Borg
f5f0e46016 lib: Use bytes.Equal instead of bytes.Compare where possible 2016-03-31 15:12:46 +00:00
Jakob Borg
c439c543d0 tests: messagediff argument order should be expected, actual
So that the diff describes the changes that happened in actual as
compared to expected. The opposite is confusing.
2016-03-17 08:03:29 +01:00
Audrius Butkevicius
a8ffde6f21 Add deps 2016-03-06 20:32:10 +00:00
Jakob Borg
11d4986517 Humanize serialization of version vectors (again) 2016-01-20 11:14:08 -08:00
Jakob Borg
bed6155c79 Refactor: multiple-if to switch 2015-11-20 11:24:50 +01:00
Jakob Borg
f2459e61dd Refactor: break out walkRegular method 2015-11-20 10:32:16 +01:00
Jakob Borg
69dcdafb3d Refactor: break out walkDir method 2015-11-20 09:54:12 +01:00
Jakob Borg
6dbb072d11 Refactor: break out walkSymlink method 2015-11-20 09:50:46 +01:00
Jakob Borg
dc96849718 Refactor: break out normalizePath method 2015-11-20 09:41:44 +01:00
Jakob Borg
d7a3cc505c Refactor: rename p->absPath, rn->relPath 2015-11-20 09:38:45 +01:00
Jakob Borg
ba9448bdd7 Add remaining scanning time (fixes #2484) 2015-11-18 12:09:10 +01:00
Jakob Borg
aa853ac833 Fix tests 2015-11-17 21:23:17 +01:00
Jakob Borg
a8a2192cf9 Show scan rate in web GUI 2015-11-17 21:23:17 +01:00
Jakob Borg
9fbdb6b305 Cancel a running scan 2015-11-13 15:30:21 +01:00
Jakob Borg
dc32f7f0a3 Reduce allocations in HashFile
By using copyBuffer we avoid a buffer allocation for each block we hash,
and by allocating space for the hashes up front we get one large backing
array instead of a small one for each block. For a 17 MiB file this
makes quite a difference in the amount of memory allocated:

	benchmark               old ns/op     new ns/op     delta
	BenchmarkHashFile-8     102045110     100459158     -1.55%

	benchmark               old allocs     new allocs     delta
	BenchmarkHashFile-8     415            144            -65.30%

	benchmark               old bytes     new bytes     delta
	BenchmarkHashFile-8     4504296       48104         -98.93%
2015-10-27 09:37:27 +01:00
Jakob Borg
1efd8d6c75 Add benchmark of HashFile 2015-10-27 09:30:34 +01:00
Audrius Butkevicius
29343aec3a Fix division by zero (fixes #2373) 2015-10-12 18:57:15 +01:00
Jakob Borg
76af9ba53d Implement facility based logger, debugging via REST API
This implements a new debug/trace infrastructure based on a slightly
hacked up logger. Instead of the traditional "if debug { ... }" I've
rewritten the logger to have no-op Debugln and Debugf, unless debugging
has been enabled for a given "facility". The "facility" is just a
string, typically a package name.

This will be slightly slower than before; but not that much as it's
mostly a function call that returns immediately. For the cases where it
matters (the Debugln takes a hex.Dump() of something for example, and
it's not in a very occasional "if err != nil" branch) there is an
l.ShouldDebug(facility) that is fast enough to be used like the old "if
debug".

The point of all this is that we can now toggle debugging for the
various packages on and off at runtime. There's a new method
/rest/system/debug that can be POSTed a set of facilities to enable and
disable debug for, or GET from to get a list of facilities with
descriptions and their current debug status.

Similarly a /rest/system/log?since=... can grab the latest log entries,
up to 250 of them (hardcoded constant in main.go) plus the initial few.

Not implemented in this commit (but planned) is a simple debug GUI
available on /debug that shows the current log in an easily pasteable
format and has checkboxes to enable the various debug facilities.

The debug instructions to a user then becomes "visit this URL, check
these boxes, reproduce your problem, copy and paste the log". The actual
log viewer on the hypothetical /debug URL can poll regularly for new log
entries and this bypass the 250 line limit.

The existing STTRACE=foo variable is still obeyed and just sets the
start state of the system.
2015-10-03 18:09:53 +02:00
Jakob Borg
4581c57478 Fix import paths 2015-09-22 19:38:46 +02:00
Jakob Borg
446a938b06 lib/symlinks need not depend on protocol 2015-09-11 12:55:25 +02:00
Jakob Borg
37ed5a01e0 Fix sudden nil pointer dereference in walk 2015-09-04 13:13:08 +02:00
Jakob Borg
54269553c8 lib/scanner need not depend on lib/ignore 2015-09-04 11:50:47 +02:00
Jakob Borg
37fb6473b3 Woops, fix scanner test 2015-08-28 08:57:37 +02:00
Jakob Borg
bc016e360e Refactor: ints used in arithmetic should be signed 2015-08-27 21:37:12 +02:00
AudriusButkevicius
94c52e3a77 Add scan percentages (fixes #1030) 2015-08-27 19:20:43 +01:00
Jakob Borg
99736e5066 Ensure dir before files ordering when scanning 2015-08-13 13:01:50 +02:00
Jakob Borg
7705a6c1f1 mv internal lib 2015-08-09 09:35:26 +02:00