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crazy-max_diun/internal/db/metadata.go
CrazyMax 1115234010
Add CLI to interact with Diun through gRPC (#382)
Add simple CLI to interact with Diun through gRPC
Create image and notif proto services
Compile and validate protos through a dedicated Dockerfile and bake target
Implement proto definitions
Move server as `serve` command
New commands `image` and `notif`
Refactor command line usage doc
Better CLI error handling
Tools build constraint to manage tools deps through go modules
Add upgrade notes

Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>
2021-05-26 18:18:10 +02:00

36 lines
757 B
Go

package db
import (
"encoding/json"
bolt "go.etcd.io/bbolt"
)
// Metadata represents db metadata informations
type Metadata struct {
Version int
}
const (
metadataKey = "ID"
)
// ReadMetadata returns db metadata
func (c *Client) ReadMetadata() error {
return c.View(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte(bucketMetadata))
if entryBytes := b.Get([]byte(metadataKey)); entryBytes != nil {
return json.Unmarshal(entryBytes, &c.metadata)
}
return nil
})
}
// WriteMetadata writes db metadata
func (c *Client) WriteMetadata(metadata Metadata) error {
entryBytes, _ := json.Marshal(metadata)
return c.Update(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte(bucketMetadata))
return b.Put([]byte(metadataKey), entryBytes)
})
}