125 lines
2.9 KiB
Go
125 lines
2.9 KiB
Go
package bolt
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import (
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"context"
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"github.com/boltdb/bolt"
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"github.com/influxdata/chronograf"
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"github.com/influxdata/chronograf/bolt/internal"
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)
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// Ensure LayoutStore implements chronograf.LayoutStore.
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var _ chronograf.LayoutStore = &LayoutStore{}
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// LayoutBucket is the bolt bucket layouts are stored in
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var LayoutBucket = []byte("Layout")
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// LayoutStore is the bolt implementation to store layouts
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type LayoutStore struct {
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client *Client
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IDs chronograf.ID
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}
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// All returns all known layouts
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func (s *LayoutStore) All(ctx context.Context) ([]chronograf.Layout, error) {
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var srcs []chronograf.Layout
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if err := s.client.db.View(func(tx *bolt.Tx) error {
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if err := tx.Bucket(LayoutBucket).ForEach(func(k, v []byte) error {
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var src chronograf.Layout
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if err := internal.UnmarshalLayout(v, &src); err != nil {
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return err
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}
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srcs = append(srcs, src)
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return nil
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}); err != nil {
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return err
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}
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return nil
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}); err != nil {
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return nil, err
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}
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return srcs, nil
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}
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// Add creates a new Layout in the LayoutStore.
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func (s *LayoutStore) Add(ctx context.Context, src chronograf.Layout) (chronograf.Layout, error) {
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if err := s.client.db.Update(func(tx *bolt.Tx) error {
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b := tx.Bucket(LayoutBucket)
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id, err := s.IDs.Generate()
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if err != nil {
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return err
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}
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src.ID = id
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if v, err := internal.MarshalLayout(src); err != nil {
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return err
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} else if err := b.Put([]byte(src.ID), v); err != nil {
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return err
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}
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return nil
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}); err != nil {
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return chronograf.Layout{}, err
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}
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return src, nil
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}
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// Delete removes the Layout from the LayoutStore
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func (s *LayoutStore) Delete(ctx context.Context, src chronograf.Layout) error {
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_, err := s.Get(ctx, src.ID)
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if err != nil {
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return err
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}
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if err := s.client.db.Update(func(tx *bolt.Tx) error {
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if err := tx.Bucket(LayoutBucket).Delete([]byte(src.ID)); err != nil {
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return err
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}
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return nil
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}); err != nil {
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return err
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}
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return nil
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}
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// Get returns a Layout if the id exists.
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func (s *LayoutStore) Get(ctx context.Context, id string) (chronograf.Layout, error) {
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var src chronograf.Layout
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if err := s.client.db.View(func(tx *bolt.Tx) error {
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if v := tx.Bucket(LayoutBucket).Get([]byte(id)); v == nil {
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return chronograf.ErrLayoutNotFound
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} else if err := internal.UnmarshalLayout(v, &src); err != nil {
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return err
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}
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return nil
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}); err != nil {
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return chronograf.Layout{}, err
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}
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return src, nil
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}
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// Update a Layout
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func (s *LayoutStore) Update(ctx context.Context, src chronograf.Layout) error {
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if err := s.client.db.Update(func(tx *bolt.Tx) error {
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// Get an existing layout with the same ID.
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b := tx.Bucket(LayoutBucket)
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if v := b.Get([]byte(src.ID)); v == nil {
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return chronograf.ErrLayoutNotFound
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}
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if v, err := internal.MarshalLayout(src); err != nil {
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return err
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} else if err := b.Put([]byte(src.ID), v); err != nil {
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return err
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}
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return nil
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}); err != nil {
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return err
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}
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return nil
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}
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