85 lines
1.7 KiB
Go
85 lines
1.7 KiB
Go
package bolt
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import (
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"encoding/json"
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"errors"
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"time"
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"go.etcd.io/bbolt"
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"backend/database/schema"
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_ "github.com/go-sql-driver/mysql"
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log "github.com/sirupsen/logrus"
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)
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const (
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bucketName = `speedtest`
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)
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type Bolt struct {
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db *bbolt.DB
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}
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func Open(databaseFile string) *Bolt {
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db, err := bbolt.Open(databaseFile, 0666, nil)
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if err != nil {
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log.Fatalf("Cannot open BoltDB database file: %s", err)
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}
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return &Bolt{db: db}
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}
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func (p *Bolt) Insert(data *schema.TelemetryData) error {
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return p.db.Update(func(tx *bbolt.Tx) error {
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data.Timestamp = time.Now()
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b, _ := json.Marshal(data)
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bucket, err := tx.CreateBucketIfNotExists([]byte(bucketName))
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if err != nil {
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return err
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}
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return bucket.Put([]byte(data.UUID), b)
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})
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}
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func (p *Bolt) FetchByUUID(uuid string) (*schema.TelemetryData, error) {
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var record schema.TelemetryData
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err := p.db.View(func(tx *bbolt.Tx) error {
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bucket := tx.Bucket([]byte(bucketName))
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if bucket == nil {
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return errors.New("data bucket doesn't exist yet")
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}
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b := bucket.Get([]byte(uuid))
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return json.Unmarshal(b, &record)
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})
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return &record, err
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}
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func (p *Bolt) FetchLast100() ([]schema.TelemetryData, error) {
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var records []schema.TelemetryData
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err := p.db.View(func(tx *bbolt.Tx) error {
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var record schema.TelemetryData
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bucket := tx.Bucket([]byte(bucketName))
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if bucket == nil {
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return errors.New("data bucket doesn't exist yet")
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}
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cursor := bucket.Cursor()
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_, b := cursor.Last()
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for len(records) < 100 {
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if err := json.Unmarshal(b, &record); err != nil {
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return err
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}
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records = append(records, record)
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_, b = cursor.Prev()
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if b == nil {
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break
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}
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}
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return nil
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})
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return records, err
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}
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