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servers.go
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servers.go
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package bolt
import (
"context"
"github.com/boltdb/bolt"
cmp "github.com/snetsystems/cmp/backend"
"github.com/snetsystems/cmp/backend/bolt/internal"
)
// Ensure ServersStore implements cmp.ServersStore.
var _ cmp.ServersStore = &ServersStore{}
// ServersBucket is the bolt bucket to store lists of servers
var ServersBucket = []byte("Servers")
// ServersStore is the bolt implementation to store servers in a store.
// Used store servers that are associated in some way with a source
type ServersStore struct {
client *Client
}
// Migrate ...
func (s *ServersStore) Migrate(ctx context.Context) error {
servers, err := s.All(ctx)
if err != nil {
return err
}
defaultOrg, err := s.client.OrganizationsStore.DefaultOrganization(ctx)
if err != nil {
return err
}
for _, server := range servers {
if server.Organization == "" {
server.Organization = defaultOrg.ID
if err := s.Update(ctx, server); err != nil {
return nil
}
}
}
return nil
}
// All returns all known servers
func (s *ServersStore) All(ctx context.Context) ([]cmp.Server, error) {
var srcs []cmp.Server
if err := s.client.db.View(func(tx *bolt.Tx) error {
var err error
srcs, err = s.all(ctx, tx)
if err != nil {
return err
}
return nil
}); err != nil {
return nil, err
}
return srcs, nil
}
// Add creates a new Server in the ServerStore.
func (s *ServersStore) Add(ctx context.Context, src cmp.Server) (cmp.Server, error) {
if err := s.client.db.Update(func(tx *bolt.Tx) error {
b := tx.Bucket(ServersBucket)
seq, err := b.NextSequence()
if err != nil {
return err
}
src.ID = int(seq)
if v, err := internal.MarshalServer(src); err != nil {
return err
} else if err := b.Put(itob(src.ID), v); err != nil {
return err
}
return nil
}); err != nil {
return cmp.Server{}, err
}
return src, nil
}
// Delete removes the Server from the ServersStore
func (s *ServersStore) Delete(ctx context.Context, src cmp.Server) error {
if err := s.client.db.Update(func(tx *bolt.Tx) error {
if err := tx.Bucket(ServersBucket).Delete(itob(src.ID)); err != nil {
return err
}
return nil
}); err != nil {
return err
}
return nil
}
// Get returns a Server if the id exists.
func (s *ServersStore) Get(ctx context.Context, id int) (cmp.Server, error) {
var src cmp.Server
if err := s.client.db.View(func(tx *bolt.Tx) error {
if v := tx.Bucket(ServersBucket).Get(itob(id)); v == nil {
return cmp.ErrServerNotFound
} else if err := internal.UnmarshalServer(v, &src); err != nil {
return err
}
return nil
}); err != nil {
return cmp.Server{}, err
}
return src, nil
}
// Update a Server
func (s *ServersStore) Update(ctx context.Context, src cmp.Server) error {
if err := s.client.db.Update(func(tx *bolt.Tx) error {
// Get an existing server with the same ID.
b := tx.Bucket(ServersBucket)
if v := b.Get(itob(src.ID)); v == nil {
return cmp.ErrServerNotFound
}
if v, err := internal.MarshalServer(src); err != nil {
return err
} else if err := b.Put(itob(src.ID), v); err != nil {
return err
}
return nil
}); err != nil {
return err
}
return nil
}
func (s *ServersStore) all(ctx context.Context, tx *bolt.Tx) ([]cmp.Server, error) {
var srcs []cmp.Server
if err := tx.Bucket(ServersBucket).ForEach(func(k, v []byte) error {
var src cmp.Server
if err := internal.UnmarshalServer(v, &src); err != nil {
return err
}
srcs = append(srcs, src)
return nil
}); err != nil {
return srcs, err
}
return srcs, nil
}