Add basic resource trimming command (#41780)

* Add basic trim command

* Indent properly

* Actually apply defaults if the user asks for it
This commit is contained in:
sam boyer 2021-11-18 10:02:11 -05:00 committed by GitHub
parent c82a15eafb
commit fc3ed34b22
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2 changed files with 75 additions and 0 deletions

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@ -214,6 +214,22 @@ so must be recompiled to validate newly-added CUE files.`,
},
},
},
{
Name: "trim-resource",
Usage: "trim schema-specified defaults from a resource",
Action: runCueCommand(cmd.trimResource),
Flags: []cli.Flag{
&cli.StringFlag{
Name: "dashboard",
Usage: "path to file containing (valid) dashboard JSON",
},
&cli.BoolFlag{
Name: "apply",
Usage: "invert the operation: apply defaults instead of trimming them",
Value: false,
},
},
},
{
Name: "gen-ts",
Usage: "generate TypeScript from all known CUE file types",

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@ -0,0 +1,59 @@
package commands
import (
"bytes"
"encoding/json"
gerrors "errors"
"fmt"
"io"
"os"
"path/filepath"
"cuelang.org/go/cue/errors"
"github.com/grafana/grafana/pkg/cmd/grafana-cli/utils"
"github.com/grafana/grafana/pkg/schema"
"github.com/grafana/grafana/pkg/schema/load"
)
func (cmd Command) trimResource(c utils.CommandLine) error {
filename := c.String("dashboard")
if filename == "" {
return gerrors.New("must specify dashboard file path with --dashboard")
}
apply := c.Bool("apply")
f, err := os.Open(filepath.Clean(filename))
if err != nil {
return err
}
b, err := io.ReadAll(f)
if err != nil {
return err
}
res := schema.Resource{Value: string(b), Name: filename}
sch, err := load.DistDashboardFamily(paths)
if err != nil {
return fmt.Errorf("error while loading dashboard scuemata, err: %w", err)
}
var out schema.Resource
if apply {
out, err = schema.ApplyDefaults(res, sch.CUE())
} else {
out, err = schema.TrimDefaults(res, sch.CUE())
}
if err != nil {
return gerrors.New(errors.Details(err, nil))
}
b = []byte(out.Value.(string))
var buf bytes.Buffer
err = json.Indent(&buf, b, "", " ")
if err != nil {
return err
}
fmt.Println(buf.String())
return nil
}