syncthing/go.mod
Jakob Borg 77970d5113
refactor: use modern Protobuf encoder (#9817)
At a high level, this is what I've done and why:

- I'm moving the protobuf generation for the `protocol`, `discovery` and
`db` packages to the modern alternatives, and using `buf` to generate
because it's nice and simple.
- After trying various approaches on how to integrate the new types with
the existing code, I opted for splitting off our own data model types
from the on-the-wire generated types. This means we can have a
`FileInfo` type with nicer ergonomics and lots of methods, while the
protobuf generated type stays clean and close to the wire protocol. It
does mean copying between the two when required, which certainly adds a
small amount of inefficiency. If we want to walk this back in the future
and use the raw generated type throughout, that's possible, this however
makes the refactor smaller (!) as it doesn't change everything about the
type for everyone at the same time.
- I have simply removed in cold blood a significant number of old
database migrations. These depended on previous generations of generated
messages of various kinds and were annoying to support in the new
fashion. The oldest supported database version now is the one from
Syncthing 1.9.0 from Sep 7, 2020.
- I changed config structs to be regular manually defined structs.

For the sake of discussion, some things I tried that turned out not to
work...

### Embedding / wrapping

Embedding the protobuf generated structs in our existing types as a data
container and keeping our methods and stuff:

```
package protocol

type FileInfo struct {
  *generated.FileInfo
}
```

This generates a lot of problems because the internal shape of the
generated struct is quite different (different names, different types,
more pointers), because initializing it doesn't work like you'd expect
(i.e., you end up with an embedded nil pointer and a panic), and because
the types of child types don't get wrapped. That is, even if we also
have a similar wrapper around a `Vector`, that's not the type you get
when accessing `someFileInfo.Version`, you get the `*generated.Vector`
that doesn't have methods, etc.

### Aliasing

```
package protocol

type FileInfo = generated.FileInfo
```

Doesn't help because you can't attach methods to it, plus all the above.

### Generating the types into the target package like we do now and
attaching methods

This fails because of the different shape of the generated type (as in
the embedding case above) plus the generated struct already has a bunch
of methods that we can't necessarily override properly (like `String()`
and a bunch of getters).

### Methods to functions

I considered just moving all the methods we attach to functions in a
specific package, so that for example

```
package protocol

func (f FileInfo) Equal(other FileInfo) bool
```

would become

```
package fileinfos

func Equal(a, b *generated.FileInfo) bool
```

and this would mostly work, but becomes quite verbose and cumbersome,
and somewhat limits discoverability (you can't see what methods are
available on the type in auto completions, etc). In the end I did this
in some cases, like in the database layer where a lot of things like
`func (fv *FileVersion) IsEmpty() bool` becomes `func fvIsEmpty(fv
*generated.FileVersion)` because they were anyway just internal methods.

Fixes #8247
2024-12-01 16:50:17 +01:00

101 lines
4.2 KiB
Modula-2

module github.com/syncthing/syncthing
go 1.22.0
require (
github.com/AudriusButkevicius/recli v0.0.7-0.20220911121932-d000ce8fbf0f
github.com/alecthomas/kong v1.4.0
github.com/aws/aws-sdk-go v1.55.5
github.com/calmh/incontainer v1.0.0
github.com/calmh/xdr v1.2.0
github.com/ccding/go-stun v0.1.5
github.com/chmduquesne/rollinghash v4.0.0+incompatible
github.com/d4l3k/messagediff v1.2.1
github.com/getsentry/raven-go v0.2.0
github.com/go-ldap/ldap/v3 v3.4.8
github.com/gobwas/glob v0.2.3
github.com/greatroar/blobloom v0.8.0
github.com/hashicorp/golang-lru/v2 v2.0.7
github.com/jackpal/gateway v1.0.15
github.com/jackpal/go-nat-pmp v1.0.2
github.com/julienschmidt/httprouter v1.3.0
github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
github.com/maruel/panicparse/v2 v2.3.1
github.com/maxbrunsfeld/counterfeiter/v6 v6.8.1
github.com/maxmind/geoipupdate/v6 v6.1.0
github.com/miscreant/miscreant.go v0.0.0-20200214223636-26d376326b75
github.com/oschwald/geoip2-golang v1.11.0
github.com/pierrec/lz4/v4 v4.1.21
github.com/prometheus/client_golang v1.20.5
github.com/puzpuzpuz/xsync/v3 v3.4.0
github.com/quic-go/quic-go v0.48.1
github.com/rabbitmq/amqp091-go v1.10.0
github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475
github.com/shirou/gopsutil/v4 v4.24.10
github.com/syncthing/notify v0.0.0-20210616190510-c6b7342338d2
github.com/syndtr/goleveldb v1.0.1-0.20220721030215-126854af5e6d
github.com/thejerf/suture/v4 v4.0.5
github.com/urfave/cli v1.22.16
github.com/vitrun/qart v0.0.0-20160531060029-bf64b92db6b0
github.com/willabides/kongplete v0.4.0
go.uber.org/automaxprocs v1.6.0
golang.org/x/crypto v0.29.0
golang.org/x/net v0.31.0
golang.org/x/sys v0.27.0
golang.org/x/text v0.20.0
golang.org/x/time v0.8.0
golang.org/x/tools v0.27.0
google.golang.org/protobuf v1.35.2
sigs.k8s.io/yaml v1.4.0
)
require (
github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/cenkalti/backoff/v4 v4.3.0 // indirect
github.com/certifi/gocertifi v0.0.0-20210507211836-431795d63e8d // indirect
github.com/cespare/xxhash/v2 v2.3.0 // indirect
github.com/cpuguy83/go-md2man/v2 v2.0.5 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/ebitengine/purego v0.8.1 // indirect
github.com/fsnotify/fsnotify v1.7.0 // indirect
github.com/go-asn1-ber/asn1-ber v1.5.7 // indirect
github.com/go-ole/go-ole v1.3.0 // indirect
github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
github.com/gofrs/flock v0.12.1 // indirect
github.com/golang/snappy v0.0.4 // indirect
github.com/google/pprof v0.0.0-20241009165004-a3522334989c // indirect
github.com/google/uuid v1.6.0 // indirect
github.com/hashicorp/errwrap v1.1.0 // indirect
github.com/hashicorp/go-multierror v1.1.1 // indirect
github.com/jmespath/go-jmespath v0.4.0 // indirect
github.com/klauspost/compress v1.17.11 // indirect
github.com/lufia/plan9stats v0.0.0-20240909124753-873cd0166683 // indirect
github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
github.com/nxadm/tail v1.4.11 // indirect
github.com/onsi/ginkgo/v2 v2.20.2 // indirect
github.com/oschwald/maxminddb-golang v1.13.1 // indirect
github.com/pkg/errors v0.9.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/posener/complete v1.2.3 // indirect
github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
github.com/prometheus/client_model v0.6.1 // indirect
github.com/prometheus/common v0.60.0 // indirect
github.com/prometheus/procfs v0.15.1 // indirect
github.com/riywo/loginshell v0.0.0-20200815045211-7d26008be1ab // indirect
github.com/russross/blackfriday/v2 v2.1.0 // indirect
github.com/stretchr/objx v0.5.2 // indirect
github.com/stretchr/testify v1.9.0 // indirect
github.com/tklauser/go-sysconf v0.3.14 // indirect
github.com/tklauser/numcpus v0.9.0 // indirect
github.com/yusufpapurcu/wmi v1.2.4 // indirect
go.uber.org/mock v0.4.0 // indirect
golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c // indirect
golang.org/x/mod v0.22.0 // indirect
golang.org/x/sync v0.9.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)
// https://github.com/gobwas/glob/pull/55
replace github.com/gobwas/glob v0.2.3 => github.com/calmh/glob v0.0.0-20220615080505-1d823af5017b