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Signed-off-by: Jiancong Zhu <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| /** | ||
| * Copyright (c) 2010-2016 Yahoo! Inc., 2017 YCSB contributors All rights reserved. | ||
| * <p> | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you | ||
| * may not use this file except in compliance with the License. You | ||
| * may obtain a copy of the License at | ||
| * <p> | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * <p> | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or | ||
| * implied. See the License for the specific language governing | ||
| * permissions and limitations under the License. See accompanying | ||
| * LICENSE file. | ||
| */ | ||
|
|
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| package memcached | ||
|
|
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| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "github.com/bradfitz/gomemcache/memcache" | ||
| "github.com/magiconair/properties" | ||
| "github.com/pingcap/go-ycsb/pkg/ycsb" | ||
| "strings" | ||
| ) | ||
|
|
||
| // properties | ||
| const ( | ||
| memcachedHosts = "memcached.hosts" | ||
| memcachedTimeout = "memcached.timeout" | ||
| memcachedMaxIdleConns = "memcached.maxIdleConns" | ||
| ) | ||
|
|
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| type mcCreator struct{} | ||
|
|
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| type mcDB struct { | ||
| p *properties.Properties | ||
| client *memcache.Client | ||
| } | ||
|
|
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| func init() { | ||
| ycsb.RegisterDBCreator("memcached", mcCreator{}) | ||
| } | ||
|
|
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| func (c mcCreator) Create(p *properties.Properties) (ycsb.DB, error) { | ||
| hosts := p.GetString(memcachedHosts, "localhost:11211") | ||
| timeout := p.GetDuration(memcachedTimeout, memcache.DefaultTimeout) | ||
| maxIdleConns := p.GetInt(memcachedMaxIdleConns, memcache.DefaultMaxIdleConns) | ||
|
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| client := memcache.New(strings.Split(hosts, ",")...) | ||
| client.Timeout = timeout | ||
| client.MaxIdleConns = maxIdleConns | ||
|
|
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| return &mcDB{ | ||
| p: p, | ||
| client: client, | ||
| }, nil | ||
| } | ||
|
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| func (db *mcDB) Close() error { | ||
| return db.client.Close() | ||
| } | ||
|
|
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| func (db *mcDB) InitThread(ctx context.Context, _ int, _ int) context.Context { | ||
| return ctx | ||
| } | ||
|
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| func (db *mcDB) CleanupThread(_ context.Context) {} | ||
|
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| func (db *mcDB) Read(ctx context.Context, table string, key string, fields []string) (map[string][]byte, error) { | ||
| item, err := db.client.Get(key) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var r map[string][]byte | ||
| err = json.NewDecoder(bytes.NewReader(item.Value)).Decode(&r) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return r, nil | ||
| } | ||
|
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| func (db *mcDB) Scan(ctx context.Context, table string, startKey string, count int, fields []string) ([]map[string][]byte, error) { | ||
| return nil, fmt.Errorf("scan is not supported") | ||
| } | ||
|
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| func (db *mcDB) Update(ctx context.Context, table string, key string, values map[string][]byte) error { | ||
| data, err := json.Marshal(values) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| item := &memcache.Item{ | ||
| Key: key, | ||
| Value: data, | ||
| } | ||
| err = db.client.Set(item) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
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| func (db *mcDB) Insert(ctx context.Context, table string, key string, values map[string][]byte) error { | ||
| return db.Update(ctx, table, key, values) | ||
| } | ||
|
|
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| func (db *mcDB) Delete(ctx context.Context, table string, key string) error { | ||
| return db.client.Delete(key) | ||
| } |
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