2a7c1cc1d6
Taking the same approach as was taken in containerd
The new library has a slightly different output;
- keys at the same level are sorted alphabetically
- empty sections not omitted (`proxy_plugins`, `stream_processors`, `timeouts`),
which could possibly be be addressed with an "omitempty" in containerd's struct.
- empty slices are not omitted (`imports`, `required_plugins`)
After sorting the "before" configuration the diff looks like this:
```patch
diff --git a/config-before-sorted.toml b/config-after.toml
index cc771ce7ab..43a727f589 100644
--- a/config-before-sorted.toml
+++ b/config-after.toml
@@ -1,6 +1,8 @@
disabled_plugins = ["cri"]
+imports = []
oom_score = 0
plugin_dir = ""
+required_plugins = []
root = "/var/lib/docker/containerd/daemon"
state = "/var/run/docker/containerd/daemon"
version = 0
@@ -37,6 +39,12 @@ version = 0
shim = "containerd-shim"
shim_debug = true
+[proxy_plugins]
+
+[stream_processors]
+
+[timeouts]
+
[ttrpc]
address = ""
gid = 0
```
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
4.2 KiB
go-toml
Go library for the TOML format.
This library supports TOML version v1.0.0-rc.1
Features
Go-toml provides the following features for using data parsed from TOML documents:
- Load TOML documents from files and string data
- Easily navigate TOML structure using Tree
- Marshaling and unmarshaling to and from data structures
- Line & column position data for all parsed elements
- Query support similar to JSON-Path
- Syntax errors contain line and column numbers
Import
import "github.com/pelletier/go-toml"
Usage example
Read a TOML document:
config, _ := toml.Load(`
[postgres]
user = "pelletier"
password = "mypassword"`)
// retrieve data directly
user := config.Get("postgres.user").(string)
// or using an intermediate object
postgresConfig := config.Get("postgres").(*toml.Tree)
password := postgresConfig.Get("password").(string)
Or use Unmarshal:
type Postgres struct {
User string
Password string
}
type Config struct {
Postgres Postgres
}
doc := []byte(`
[Postgres]
User = "pelletier"
Password = "mypassword"`)
config := Config{}
toml.Unmarshal(doc, &config)
fmt.Println("user=", config.Postgres.User)
Or use a query:
// use a query to gather elements without walking the tree
q, _ := query.Compile("$..[user,password]")
results := q.Execute(config)
for ii, item := range results.Values() {
fmt.Printf("Query result %d: %v\n", ii, item)
}
Documentation
The documentation and additional examples are available at godoc.org.
Tools
Go-toml provides two handy command line tools:
-
tomll: Reads TOML files and lints them.go install github.com/pelletier/go-toml/cmd/tomll tomll --help -
tomljson: Reads a TOML file and outputs its JSON representation.go install github.com/pelletier/go-toml/cmd/tomljson tomljson --help -
jsontoml: Reads a JSON file and outputs a TOML representation.go install github.com/pelletier/go-toml/cmd/jsontoml jsontoml --help
Docker image
Those tools are also availble as a Docker image from
dockerhub. For example, to
use tomljson:
docker run -v $PWD:/workdir pelletier/go-toml tomljson /workdir/example.toml
Only master (latest) and tagged versions are published to dockerhub. You
can build your own image as usual:
docker build -t go-toml .
Contribute
Feel free to report bugs and patches using GitHub's pull requests system on pelletier/go-toml. Any feedback would be much appreciated!
Run tests
go test ./...
Fuzzing
The script ./fuzz.sh is available to
run go-fuzz on go-toml.
Versioning
Go-toml follows Semantic Versioning. The supported version of TOML is indicated at the beginning of this document. The last two major versions of Go are supported (see Go Release Policy).
License
The MIT License (MIT). Read LICENSE.