126 lines
3.0 KiB
Go
126 lines
3.0 KiB
Go
package kv
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import (
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"context"
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"github.com/influxdata/chronograf"
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"github.com/influxdata/chronograf/kv/internal"
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)
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// Ensure serversStore implements chronograf.ServersStore.
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var _ chronograf.ServersStore = &serversStore{}
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// serversStore is the implementation to store servers in a store.
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// Used store servers that are associated in some way with a source
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type serversStore struct {
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client *Service
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}
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// All returns all known servers
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func (s *serversStore) All(ctx context.Context) ([]chronograf.Server, error) {
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var srcs []chronograf.Server
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if err := s.client.kv.View(ctx, func(tx Tx) error {
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var err error
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srcs, err = allServers(ctx, tx)
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if 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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func allServers(ctx context.Context, tx Tx) ([]chronograf.Server, error) {
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var srcs []chronograf.Server
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if err := tx.Bucket(serversBucket).ForEach(func(k, v []byte) error {
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var src chronograf.Server
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if err := internal.UnmarshalServer(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 srcs, err
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}
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return srcs, nil
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}
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// Add creates a new Server in the ServerStore.
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func (s *serversStore) Add(ctx context.Context, src chronograf.Server) (chronograf.Server, error) {
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if err := s.client.kv.Update(ctx, func(tx Tx) error {
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b := tx.Bucket(serversBucket)
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seq, err := b.NextSequence()
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if err != nil {
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return err
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}
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src.ID = int(seq)
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if v, err := internal.MarshalServer(src); err != nil {
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return err
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} else if err := b.Put(itob(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.Server{}, err
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}
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return src, nil
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}
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// Delete removes the Server from the serversStore
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func (s *serversStore) Delete(ctx context.Context, src chronograf.Server) error {
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if err := s.client.kv.Update(ctx, func(tx Tx) error {
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if err := tx.Bucket(serversBucket).Delete(itob(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 Server if the id exists.
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func (s *serversStore) Get(ctx context.Context, id int) (chronograf.Server, error) {
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var src chronograf.Server
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if err := s.client.kv.View(ctx, func(tx Tx) error {
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if v, err := tx.Bucket(serversBucket).Get(itob(id)); v == nil || err != nil {
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return chronograf.ErrServerNotFound
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} else if err := internal.UnmarshalServer(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.Server{}, err
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}
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return src, nil
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}
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// Update a Server
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func (s *serversStore) Update(ctx context.Context, src chronograf.Server) error {
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if err := s.client.kv.Update(ctx, func(tx Tx) error {
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// Get an existing server with the same ID.
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b := tx.Bucket(serversBucket)
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if v, err := b.Get(itob(src.ID)); v == nil || err != nil {
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return chronograf.ErrServerNotFound
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}
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if v, err := internal.MarshalServer(src); err != nil {
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return err
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} else if err := b.Put(itob(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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