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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 package memory | |
| 6 | |
| 7 import ( | |
| 8 "errors" | |
| 9 | |
| 10 "golang.org/x/net/context" | |
| 11 | |
| 12 ds "github.com/luci/gae/service/datastore" | |
| 13 ) | |
| 14 | |
| 15 //////////////////////////////////// public //////////////////////////////////// | |
| 16 | |
| 17 // useRDS adds a gae.Datastore implementation to context, accessible | |
| 18 // by gae.GetDS(c) | |
| 19 func useRDS(c context.Context) context.Context { | |
| 20 return ds.SetRawFactory(c, func(ic context.Context) ds.RawInterface { | |
| 21 dsd := cur(ic).Get(memContextDSIdx) | |
| 22 | |
| 23 ns := curGID(ic).namespace | |
| 24 if x, ok := dsd.(*dataStoreData); ok { | |
| 25 return &dsImpl{x, ns, ic} | |
| 26 } | |
| 27 return &txnDsImpl{dsd.(*txnDataStoreData), ns} | |
| 28 }) | |
| 29 } | |
| 30 | |
| 31 //////////////////////////////////// dsImpl //////////////////////////////////// | |
| 32 | |
| 33 // dsImpl exists solely to bind the current c to the datastore data. | |
| 34 type dsImpl struct { | |
| 35 data *dataStoreData | |
| 36 ns string | |
| 37 c context.Context | |
| 38 } | |
| 39 | |
| 40 var _ ds.RawInterface = (*dsImpl)(nil) | |
| 41 | |
| 42 func (d *dsImpl) DecodeKey(encoded string) (ds.Key, error) { | |
| 43 return ds.NewKeyFromEncoded(encoded) | |
| 44 } | |
| 45 | |
| 46 func (d *dsImpl) NewKey(kind, stringID string, intID int64, parent ds.Key) ds.Ke
y { | |
| 47 return ds.NewKey(globalAppID, d.ns, kind, stringID, intID, parent) | |
| 48 } | |
| 49 | |
| 50 func (d *dsImpl) PutMulti(keys []ds.Key, vals []ds.PropertyMap, cb ds.PutMultiCB
) error { | |
| 51 d.data.putMulti(keys, vals, cb) | |
| 52 return nil | |
| 53 } | |
| 54 | |
| 55 func (d *dsImpl) GetMulti(keys []ds.Key, _meta ds.MultiMetaGetter, cb ds.GetMult
iCB) error { | |
| 56 d.data.getMulti(keys, cb) | |
| 57 return nil | |
| 58 } | |
| 59 | |
| 60 func (d *dsImpl) DeleteMulti(keys []ds.Key, cb ds.DeleteMultiCB) error { | |
| 61 d.data.delMulti(keys, cb) | |
| 62 return nil | |
| 63 } | |
| 64 | |
| 65 func (d *dsImpl) NewQuery(kind string) ds.Query { | |
| 66 return &queryImpl{ns: d.ns, kind: kind} | |
| 67 } | |
| 68 | |
| 69 func (d *dsImpl) Run(q ds.Query, cb ds.RawRunCB) error { | |
| 70 return nil | |
| 71 /* | |
| 72 rq := q.(*queryImpl) | |
| 73 rq = rq.normalize().checkCorrectness(d.ns, false) | |
| 74 return &queryIterImpl{rq} | |
| 75 */ | |
| 76 } | |
| 77 | |
| 78 ////////////////////////////////// txnDsImpl /////////////////////////////////// | |
| 79 | |
| 80 type txnDsImpl struct { | |
| 81 data *txnDataStoreData | |
| 82 ns string | |
| 83 } | |
| 84 | |
| 85 var _ ds.RawInterface = (*txnDsImpl)(nil) | |
| 86 | |
| 87 func (d *txnDsImpl) DecodeKey(encoded string) (ds.Key, error) { | |
| 88 return ds.NewKeyFromEncoded(encoded) | |
| 89 } | |
| 90 | |
| 91 func (d *txnDsImpl) NewKey(kind, stringID string, intID int64, parent ds.Key) ds
.Key { | |
| 92 return ds.NewKey(globalAppID, d.ns, kind, stringID, intID, parent) | |
| 93 } | |
| 94 | |
| 95 func (d *txnDsImpl) PutMulti(keys []ds.Key, vals []ds.PropertyMap, cb ds.PutMult
iCB) error { | |
| 96 return d.data.run(func() error { | |
| 97 d.data.putMulti(keys, vals, cb) | |
| 98 return nil | |
| 99 }) | |
| 100 } | |
| 101 | |
| 102 func (d *txnDsImpl) GetMulti(keys []ds.Key, _meta ds.MultiMetaGetter, cb ds.GetM
ultiCB) error { | |
| 103 return d.data.run(func() error { | |
| 104 return d.data.getMulti(keys, cb) | |
| 105 }) | |
| 106 } | |
| 107 | |
| 108 func (d *txnDsImpl) DeleteMulti(keys []ds.Key, cb ds.DeleteMultiCB) error { | |
| 109 return d.data.run(func() error { | |
| 110 return d.data.delMulti(keys, cb) | |
| 111 }) | |
| 112 } | |
| 113 | |
| 114 func (d *txnDsImpl) Run(q ds.Query, cb ds.RawRunCB) error { | |
| 115 rq := q.(*queryImpl) | |
| 116 if rq.ancestor == nil { | |
| 117 return errors.New("memory: queries in transactions only support
ancestor queries") | |
| 118 } | |
| 119 panic("NOT IMPLEMENTED") | |
| 120 } | |
| 121 | |
| 122 func (*txnDsImpl) RunInTransaction(func(c context.Context) error, *ds.Transactio
nOptions) error { | |
| 123 return errors.New("datastore: nested transactions are not supported") | |
| 124 } | |
| 125 | |
| 126 func (d *txnDsImpl) NewQuery(kind string) ds.Query { | |
| 127 return &queryImpl{ns: d.ns, kind: kind} | |
| 128 } | |
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