Commit Graph

92 Commits

Author SHA1 Message Date
Jakob Borg
9682bbfbda lib/protocol: Optimize luhn and chunk functions
These functions were very naive and slow. We haven't done much about
them because they pretty much don't matter at all for Syncthing
performance. They are however called very often in the discovery server
and these optimizations have a huge effect on the CPU load on the
public discovery servers.

The code isn't exactly obvious, but we have good test coverage on all
these functions.

benchmark                 old ns/op     new ns/op     delta
BenchmarkLuhnify-8        12458         1045          -91.61%
BenchmarkUnluhnify-8      12598         1074          -91.47%
BenchmarkChunkify-8       10792         104           -99.04%

benchmark                 old allocs     new allocs     delta
BenchmarkLuhnify-8        18             1              -94.44%
BenchmarkUnluhnify-8      18             1              -94.44%
BenchmarkChunkify-8       44             2              -95.45%

benchmark                 old bytes     new bytes     delta
BenchmarkLuhnify-8        1278          64            -94.99%
BenchmarkUnluhnify-8      1278          64            -94.99%
BenchmarkChunkify-8       42552         128           -99.70%

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4346
2017-09-03 10:26:12 +00:00
Audrius Butkevicius
cbcc3ea132 lib/connections: Use our own fork of kcp (fixes #4063)
This updates kcp and uses our own fork which:

1. Keys sessions not just by remote address, but by remote address +
conversation id 2. Allows not to close connections that were passed directly
to the library. 3. Resets cache key if the session gets terminated.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4339
LGTM: calmh
2017-09-02 06:04:35 +00:00
Jakob Borg
e0405de5bf lib/protocol: More descriptive errors on device ID parse failures 2017-04-27 14:45:35 +09:00
Jakob Borg
e3e028c988 lib/protocol: Accept invalid files without blocks (fixes #4093) 2017-04-12 11:28:12 +02:00
Jakob Borg
b75b4190c8 lib/protocol: Add some consistency checks on incoming index updates (fixes #4053)
With this change we will throw a protocol error on some kinds of
malformed index entries.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4064
2017-03-27 07:21:08 +00:00
Audrius Butkevicius
0da0774ce4 lib/connections: Add KCP support (fixes #804)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3489
2017-03-07 12:44:16 +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
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
Jakob Borg
987718baf8 vendor: Update github.com/gogo/protobuf
Also tweaks the proto definitions:

 - [packed=false] on the block_indexes field to retain compat with
   v0.14.16 and earlier.

 - Uses the vendored protobuf package in include paths.

And, "build.go setup" will install the vendored protoc-gen-gogofast.
This should ensure that a proto rebuild isn't so dependent on whatever
version of the compiler and package the developer has installed...

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3864
2017-01-03 00:16:21 +00:00
Jakob Borg
6809d38cde lib/protocol: Revert protobuf encoder changes in v0.14.17 (fixes #3855)
The protobuf encoder now produces packed arrays for things like []int32,
which is actually correct according to the proto3 spec. However
Syncthing v0.14.16 and earlier doesn't support this. This reverts the
encoding change, but keeps the updated decoder so that we are both more
compatible with other proto3 implementations and can move to the updated
encoder in the future.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3856
2017-01-01 17:19:00 +00:00
Audrius Butkevicius
bab7c8ebbf all: Add folder pause, make pauses permanent (fixes #3407, fixes #215, fixes #3001)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3520
2016-12-21 18:41:25 +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
dd7bb6c4b8 lib/model: Fix tests, clean up pool usage in protocol 2016-12-21 14:53:45 +01:00
Jakob Borg
d41c131364 build: Enable gometalinter "gosimple" check, improve build.go 2016-12-21 14:53:45 +01:00
Jakob Borg
47f22ff3e5 build: Enable gometalinter "unconvert" check 2016-12-21 14:53:45 +01:00
Jakob Borg
ead7281c20 build: Enable gometalinter "unused" check 2016-12-21 14:53:45 +01:00
Jakob Borg
d7d5687faa lib/protocol: Warnln should have been Warnf 2016-12-21 10:43:12 +01:00
Jakob Borg
2f770f8bfb lib/config, lib/protocol: Improve folder description with empty label 2016-12-19 10:12:06 +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
a9b03de99a gui, lib/db: Correct space accounting of symlinks, for "out of sync" status 2016-12-09 10:38:36 +01:00
Jakob Borg
3266aae1c3 lib/protocol: Apply input filtering on file names
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3775
2016-12-01 12:35:32 +00:00
Jakob Borg
cc9a9fb390 lib/model, lib/protocol: Add Folder.Description() for logging (ref #3741) 2016-11-22 08:36:14 +01:00
Jakob Borg
3088dac33b lib/model: Clean up generateClusterConfig, fix spurious test failure by sorting 2016-11-17 07:45:45 +01:00
Jakob Borg
95c738ea28 lib/protocol: Serialize the all zeroes device ID to the empty string
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3734
2016-11-15 06:22:36 +00:00
Audrius Butkevicius
a1a91d5ef4 lib/model: Introducer can remove stuff it introduced (fixes #1015)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3522
2016-11-13 09:29:33 +01:00
Jakob Borg
59f3d1445f Revert "lib/model: Introducer can remove stuff it introduced (fixes #1015)"
This reverts commit 0b88cf1d03.
2016-11-12 08:38:29 +01:00
Audrius Butkevicius
0b88cf1d03 lib/model: Introducer can remove stuff it introduced (fixes #1015)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3522
2016-11-11 15:54:25 +01:00
Jakob Borg
3f9b75b7b3 Revert "lib/model: Introducer can remove stuff it introduced (fixes #1015)"
This reverts commit ec2b097313.
2016-11-08 14:27:32 +08:00
Audrius Butkevicius
ec2b097313 lib/model: Introducer can remove stuff it introduced (fixes #1015)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3522
2016-11-08 00:40:48 +08:00
Audrius Butkevicius
14937e7dd2 build: Fix proto builder on Windows 2016-11-03 22:06:51 +00:00
Jakob Borg
0296c23685 lib/protocol: Use DeviceID in protocol messages, with custom marshalling
This makes the device ID a real type that can be used in the protobuf
schema. That avoids the juggling back and forth from []byte in a bunch
of places and simplifies the code.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3695
2016-10-29 21:56:24 +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
5b37d0356c lib/model, gui: Correct completion percentages when there are lots of deletes (fixes #3496)
We used to consider deleted files & directories 128 bytes large. After
the delta indexes change a bug slipped in where deleted files would be
weighted according to their old non-deleted size. Both ways are
incorrect (but the latest change made it worse), as if there are more
files deleted than remaining data in the repo the needSize can be
greater than the globalSize, resulting in a negative completion
percentage.

This change makes it so that deleted items are zero bytes large, which
makes more sense. Instead we expose the number of files that we need to
delete as a separate field in the Completion() result, and hack the
percentage down to 95% complete if it was 100% complete but we need to
delete files. This latter part is sort of ugly, but necessary to give
the user some sort of feedback.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3556
2016-09-02 06:45:46 +00:00
Jakob Borg
cf5febad47 build, cmd, lib: Minimum supported compiler version is Go 1.5 2016-08-15 08:37:32 +02:00
Jakob Borg
e52be3d83e lib/connections, lib/model: Refactor connection close handling (fixes #3466)
So there were some issues here. The main problem was that
model.Close(deviceID) was overloaded to mean "the connection was closed
by the protocol layer" and "i want to close this connection". That meant
it could get called twice - once *to* close the connection and then once
more when the connection *was* closed.

After this refactor there is instead a Closed(conn) method that is the
callback. I didn't need to change the parameter in the end, but I think
it's clearer what it means when it takes the connection that was closed
instead of a device ID. To close a connection, the new close(deviceID)
method is used instead, which only closes the underlying connection and
leaves the cleanup to the Closed() callback.

I also changed how we do connection switching. Instead of the connection
service calling close and then adding the connection, it just adds the
new connection. The model knows that it already has a connection and
makes sure to close and clean out that one before adding the new
connection.

To make sure to sequence this properly I added a new map of channels
that get created on connection add and closed by Closed(), so that
AddConnection() can do the close and wait for the cleanup to happen
before proceeding.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3490
2016-08-10 09:37:32 +00:00
Jakob Borg
a1f6cbd354 lib/protocol: Clean away outdated files 2016-08-07 14:24:25 +02:00
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
1eb6db6ca8 cmd/syncthing, lib/...: Correctly handle ignores & invalid file names (fixes #3012, fixes #3457, fixes #3458)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3464
2016-08-05 07:13:52 +00:00
Jakob Borg
297240facf all: Rename LocalVersion to Sequence (fixes #3461)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3462
2016-07-29 19:54:24 +00:00
Jakob Borg
aafc96f58f lib/model, lib/protocol: Sequence ClusterConfig properly (fixes #3448)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3452
2016-07-27 21:36:25 +00:00
Jakob Borg
47fa4b0a2c cmd/syncthing, lib/db, lib/model, lib/protocol: Implement delta indexes (fixes #438)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3427
2016-07-23 12:46:31 +00:00
Jakob Borg
7b7e35d339 lib/protocol: Hello message length is an int16
It used to be an int32, but that's unnecessary and the spec now says
int16. Also relaxes the size requirement to that which fits in a signed
int16 instead of limiting to 1024 bytes, to allow for future growth.

As reported in
https://forum.syncthing.net/t/difference-between-documented-and-implemented-protocol/7798

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3406
2016-07-17 21:41:20 +00:00
Jakob Borg
e440d30028 lib/protocol: Allow unknown message types
This lets us add message types in the future, for authentication or
other purposes, without completely breaking old clients. I see this as
similar behavior to adding fields to messages - newer clients must
simple be aware that older ones may ignore the message and act
accordingly.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3390
2016-07-05 09:29:28 +00:00
Jakob Borg
aa50ef4069 lib/model: Invalidate files with trailing white space on Windows (fixes #3227)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3383
2016-07-04 10:44:30 +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
d507126101 lib/protocol: Understand older/newer Hello messages (fixes #3287)
This is in preparation for future changes, but also improves the
handling when talking to pre-v0.13 clients. It breaks out the Hello
message and magic from the rest of the protocol implementation, with the
intention that this small part of the protocol will survive future
changes.

To enable this, and future testing, the new ExchangeHello function takes
an interface that can be implemented by future Hello versions and
returns a version indendent result type. It correctly detects pre-v0.13
protocols and returns a "too old" error message which gets logged to the
user at warning level:

   [I6KAH] 09:21:36 WARNING: Connecting to [...]:
     the remote device speaks an older version of the protocol (v0.12) not
     compatible with this version

Conversely, something entirely unknown will generate:

   [I6KAH] 09:40:27 WARNING: Connecting to [...]:
     the remote device speaks an unknown (newer?) version of the protocol

The intention is that in future iterations the Hello exchange will
succeed on at least one side and ExchangeHello will return the actual
data from the Hello together with ErrTooOld and an even more precise
message can be generated.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3289
2016-06-09 10:50:14 +00:00
Jakob Borg
ac40b27c79 lib/connections: Handle wrapped connection in SetTCPOptions (fixes #3223)
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3225
2016-05-31 08:11:57 +00:00
Nate Morrison
86ca58e2a9 lib/model: Emit LocalDiskUpdated events on detecting local changes
GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3055
2016-05-19 00:19:26 +00:00