44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
// Package mdatastore implements connecting to Google's Datastore service and
|
|
// simplifying a number of interactions with it.
|
|
package mdatastore
|
|
|
|
import (
|
|
"context"
|
|
|
|
"cloud.google.com/go/datastore"
|
|
"github.com/mediocregopher/mediocre-go-lib/m"
|
|
"github.com/mediocregopher/mediocre-go-lib/mcfg"
|
|
"github.com/mediocregopher/mediocre-go-lib/mdb"
|
|
"github.com/mediocregopher/mediocre-go-lib/mlog"
|
|
)
|
|
|
|
// Datastore is a wrapper around a datastore client providing more
|
|
// functionality.
|
|
type Datastore struct {
|
|
*datastore.Client
|
|
|
|
gce *mdb.GCE
|
|
log *mlog.Logger
|
|
}
|
|
|
|
// Cfg configures and returns a Datastore instance which will be usable once
|
|
// StartRun is called on the passed in Cfg instance.
|
|
func Cfg(cfg *mcfg.Cfg) *Datastore {
|
|
cfg = cfg.Child("datastore")
|
|
var ds Datastore
|
|
ds.gce = mdb.CfgGCE(cfg)
|
|
ds.log = m.Log(cfg, &ds)
|
|
cfg.Start.Then(func(ctx context.Context) error {
|
|
ds.log.Info("connecting to datastore")
|
|
var err error
|
|
ds.Client, err = datastore.NewClient(ctx, ds.gce.Project, ds.gce.ClientOptions()...)
|
|
return mlog.ErrWithKV(err, &ds)
|
|
})
|
|
return &ds
|
|
}
|
|
|
|
// KV implements the mlog.KVer interface.
|
|
func (ds *Datastore) KV() mlog.KV {
|
|
return ds.gce.KV()
|
|
}
|