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metadata.go
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metadata.go
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//
// Copyright (C) 2019-2020 Vdaas.org Vald team ( kpango, rinx, kmrmt )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Package metadata provides agent metadata structs and info.
package metadata
import (
"io"
"os"
"github.com/vdaas/vald/internal/encoding/json"
"github.com/vdaas/vald/internal/file"
)
const (
AgentMetadataFileName = "metadata.json"
)
type Metadata struct {
IsInvalid bool `json:"is_invalid" yaml:"is_invalid"`
NGT *NGT `json:"ngt,omitempty" yaml:"ngt"`
}
type NGT struct {
IndexCount uint64 `json:"index_count" yaml:"index_count"`
}
func Load(path string) (*Metadata, error) {
f, err := file.Open(path, os.O_RDONLY|os.O_SYNC, os.ModePerm)
if err != nil {
return nil, err
}
defer f.Close()
var meta Metadata
err = json.Decode(f, &meta)
if err != nil && err != io.EOF {
return nil, err
}
return &meta, nil
}
func Store(path string, meta *Metadata) error {
f, err := file.Open(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, os.ModePerm)
if err != nil {
return err
}
defer f.Close()
return json.Encode(f, &meta)
}