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transform.go
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transform.go
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// get json from stdin and return json with v2 objects and v2 relations
package app
import (
"context"
"os"
"time"
"github.com/alecthomas/kong"
"github.com/aserto-dev/ds-load/sdk/plugin"
"github.com/aserto-dev/ds-load/sdk/transform"
)
type TransformCmd struct {
Template string `name:"template" short:"t" env:"DS_TEMPLATE_FILE" help:"transformation template file path" type:"path" optional:""`
}
func (t *TransformCmd) Run(kongContext *kong.Context) error {
template, err := t.getTemplateContent()
if err != nil {
return err
}
timeoutCtx, cancel := context.WithTimeout(context.Background(), 1500*time.Millisecond)
defer cancel()
goTemplateTransformer := transform.NewGoTemplateTransform(template)
return t.transform(timeoutCtx, goTemplateTransformer)
}
func (t *TransformCmd) transform(ctx context.Context, transformer plugin.Transformer) error {
return transformer.Transform(ctx, os.Stdin, os.Stdout, os.Stderr)
}
func (t *TransformCmd) getTemplateContent() ([]byte, error) {
var templateContent []byte
var err error
if t.Template == "" {
templateContent, err = Assets().ReadFile("assets/transform_template.tmpl")
if err != nil {
return nil, err
}
} else {
templateContent, err = os.ReadFile(t.Template)
if err != nil {
return nil, err
}
}
return templateContent, nil
}