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json.go
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json.go
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package output
import (
"encoding/json"
"os"
"strings"
"github.com/cosi-project/runtime/pkg/resource"
"github.com/cosi-project/runtime/pkg/state"
yaml "gopkg.in/yaml.v3"
)
// JSON outputs resources in JSON format.
type JSON struct {
withEvents bool
}
// NewJSON initializes JSON resource output.
func NewJSON() *JSON {
return &JSON{}
}
// WriteHeader implements output.Writer interface.
func (j *JSON) WriteHeader(definition resource.Resource, withEvents bool) error {
j.withEvents = withEvents
return nil
}
// WriteResource implements output.Writer interface.
func (j *JSON) WriteResource(node string, r resource.Resource, event state.EventType) error {
out, err := resource.MarshalYAML(r)
if err != nil {
return err
}
yamlBytes, err := yaml.Marshal(out)
if err != nil {
return err
}
var data map[string]interface{}
err = yaml.Unmarshal(yamlBytes, &data)
if err != nil {
return err
}
data["node"] = node
if j.withEvents {
data["event"] = strings.ToLower(event.String())
}
enc := json.NewEncoder(os.Stdout)
enc.SetIndent("", " ")
return enc.Encode(data)
}
// Flush implements output.Writer interface.
func (j *JSON) Flush() error {
return nil
}