go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/gae/service/memcache/raw_interface.go (about)

     1  // Copyright 2015 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package memcache
    16  
    17  // RawCB is a simple error callback for most of the methods in RawInterface.
    18  type RawCB func(error)
    19  
    20  // RawItemCB is the callback for RawInterface.GetMulti. It takes the retrieved
    21  // item and the error for that item (e.g. ErrCacheMiss) if there was one. Item
    22  // is guaranteed to be nil if error is not nil.
    23  type RawItemCB func(Item, error)
    24  
    25  // RawInterface is the full interface to the memcache service.
    26  type RawInterface interface {
    27  	NewItem(key string) Item
    28  
    29  	AddMulti(items []Item, cb RawCB) error
    30  	SetMulti(items []Item, cb RawCB) error
    31  	GetMulti(keys []string, cb RawItemCB) error
    32  	DeleteMulti(keys []string, cb RawCB) error
    33  	CompareAndSwapMulti(items []Item, cb RawCB) error
    34  
    35  	Increment(key string, delta int64, initialValue *uint64) (newValue uint64, err error)
    36  
    37  	Flush() error
    38  
    39  	Stats() (*Statistics, error)
    40  }