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72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package testing
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import (
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"fmt"
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"sync"
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)
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// MemStore is an implementation of CheckpointStore interface which stores checkpoint in memory.
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type MemStore struct {
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mem map[string][]byte
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sync.Mutex
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}
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// NewMemStore returns an instance of MemStore
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func NewMemStore() *MemStore {
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return &MemStore{mem: make(map[string][]byte)}
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}
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// Write writes the data to the store
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func (mstore *MemStore) Write(key string, data []byte) error {
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mstore.Lock()
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defer mstore.Unlock()
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mstore.mem[key] = data
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return nil
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}
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// Read returns data read from store
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func (mstore *MemStore) Read(key string) ([]byte, error) {
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mstore.Lock()
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defer mstore.Unlock()
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data, ok := mstore.mem[key]
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if !ok {
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return nil, fmt.Errorf("checkpoint is not found")
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}
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return data, nil
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}
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// Delete deletes data from the store
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func (mstore *MemStore) Delete(key string) error {
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mstore.Lock()
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defer mstore.Unlock()
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delete(mstore.mem, key)
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return nil
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}
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// List returns all the keys from the store
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func (mstore *MemStore) List() ([]string, error) {
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mstore.Lock()
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defer mstore.Unlock()
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keys := make([]string, 0)
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for key := range mstore.mem {
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keys = append(keys, key)
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}
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return keys, nil
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}
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