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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package classifications
import (
"context"
"encoding/json"
"fmt"
"os"
"github.com/go-openapi/strfmt"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/weaviate/weaviate/adapters/repos/db/helpers"
"github.com/weaviate/weaviate/entities/models"
"github.com/weaviate/weaviate/usecases/classification"
bolt "go.etcd.io/bbolt"
)
var classificationsBucket = []byte("classifications")
type Repo struct {
logger logrus.FieldLogger
baseDir string
db *bolt.DB
}
func NewRepo(baseDir string, logger logrus.FieldLogger) (*Repo, error) {
r := &Repo{
baseDir: baseDir,
logger: logger,
}
err := r.init()
return r, err
}
func (r *Repo) DBPath() string {
return fmt.Sprintf("%s/classifications.db", r.baseDir)
}
func (r *Repo) keyFromID(id strfmt.UUID) []byte {
return []byte(id)
}
func (r *Repo) init() error {
if err := os.MkdirAll(r.baseDir, 0o777); err != nil {
return errors.Wrapf(err, "create root path directory at %s", r.baseDir)
}
boltdb, err := bolt.Open(r.DBPath(), 0o600, nil)
if err != nil {
return errors.Wrapf(err, "open bolt at %s", r.DBPath())
}
err = boltdb.Update(func(tx *bolt.Tx) error {
if _, err := tx.CreateBucketIfNotExists(classificationsBucket); err != nil {
return errors.Wrapf(err, "create classifications bucket '%s'",
string(helpers.ObjectsBucket))
}
return nil
})
if err != nil {
return errors.Wrapf(err, "create bolt buckets")
}
r.db = boltdb
return nil
}
func (r *Repo) Put(ctx context.Context, classification models.Classification) error {
classificationJSON, err := json.Marshal(classification)
if err != nil {
return errors.Wrap(err, "marshal classification to JSON")
}
return r.db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket(classificationsBucket)
return b.Put(r.keyFromID(classification.ID), classificationJSON)
})
}
func (r *Repo) Get(ctx context.Context, id strfmt.UUID) (*models.Classification, error) {
var classificationJSON []byte
r.db.View(func(tx *bolt.Tx) error {
b := tx.Bucket(classificationsBucket)
classificationJSON = b.Get(r.keyFromID(id))
return nil
})
if len(classificationJSON) == 0 {
return nil, nil
}
var c models.Classification
err := json.Unmarshal(classificationJSON, &c)
if err != nil {
return nil, errors.Wrapf(err, "parse classification from JSON")
}
return &c, nil
}
var _ = classification.Repo(&Repo{})
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