Better attempt at an appengine wrapper.

go/src/infra/gae/libs/context/context.go

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// +build appengine
-
-package context
-
-import (
-        "appengine"
-        "appengine/datastore"
-
-        "github.com/luci/luci-go/common/logging"
-        "github.com/mjibson/goon"
-)
-
-/// Kinds + Keys
-
-type Kinder interface {
-        Kind(src interface{}) string
-}
-
-type KindSetter interface {
-        KindNameResolver() goon.KindNameResolver
-        SetKindNameResolver(goon.KindNameResolver)
-}
-
-type NewKeyer interface {
-        NewKey(kind, stringID string, intID int64, parent *datastore.Key) *datastore.Key
-        NewKeyObj(src interface{}) *datastore.Key
-        NewKeyObjError(src interface{}) (*datastore.Key, error)
-}
-
-type KindKeyer interface {
-        Kinder
-        NewKeyer
-}
-
-/// Read + Write
-
-type SingleReadWriter interface {
-        Put(src interface{}) (*datastore.Key, error)
-        Get(dst interface{}) error
-        Delete(key *datastore.Key) error
-}
-
-type MultiReadWriter interface {
-        SingleReadWriter
-        DeleteMulti(keys []*datastore.Key) error
-        GetMulti(dst interface{}) error
-        PutMulti(src interface{}) ([]*datastore.Key, error)
-}
-
-/// Queries
-
-type Queryer interface {
-        Run(q *datastore.Query) Iterator
-        GetAll(q *datastore.Query, dst interface{}) ([]*datastore.Key, error)
-        Count(q *datastore.Query) (int, error)
-}
-
-type Iterator interface {
-        Cursor() (datastore.Cursor, error)
-        Next(dst interface{}) (*datastore.Key, error)
-}
-
-/// Transactions
-
-type Transactioner interface {
-        RunInTransaction(f func(c Context) error, opts *datastore.TransactionOptions) error
-}
-
-/// Abstraction breaking!
-
-type DangerousContexter interface {
-        Context() appengine.Context
-}
-
-type SingleContext interface {
-        logging.Logger
-        Kinder
-        NewKeyer
-        SingleReadWriter
-}
-
-type Context interface {
-        logging.Logger
-        Kinder
-        NewKeyer
-        MultiReadWriter
-        Queryer
-        KindSetter
-}
-
-type TransactionerContext interface {
-        Context
-        Transactioner
-}
-
-type DangerousContext interface {
-        DangerousContexter
-        Context
-}
-
-type DangerousTransactionerContext interface {
-        DangerousContexter
-        TransactionerContext
-}