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session.NewStore to store.New to achieve semantic accuracy (
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| // Copyright 2018 PingCAP, Inc. | ||
| // | ||
| // 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. | ||
|
|
||
| package store | ||
|
|
||
| import ( | ||
| "net/url" | ||
| "strings" | ||
|
|
||
| "github.com/pingcap/errors" | ||
| "github.com/pingcap/tidb/kv" | ||
| "github.com/pingcap/tidb/util" | ||
| log "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| var stores = make(map[string]kv.Driver) | ||
|
|
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| // Register registers a kv storage with unique name and its associated Driver. | ||
| func Register(name string, driver kv.Driver) error { | ||
| name = strings.ToLower(name) | ||
|
|
||
| if _, ok := stores[name]; ok { | ||
| return errors.Errorf("%s is already registered", name) | ||
| } | ||
|
|
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| stores[name] = driver | ||
| return nil | ||
| } | ||
|
|
||
| // New creates a kv Storage with path. | ||
| // | ||
| // The path must be a URL format 'engine://path?params' like the one for | ||
| // session.Open() but with the dbname cut off. | ||
| // Examples: | ||
| // goleveldb://relative/path | ||
| // boltdb:///absolute/path | ||
| // | ||
| // The engine should be registered before creating storage. | ||
| func New(path string) (kv.Storage, error) { | ||
| return newStoreWithRetry(path, util.DefaultMaxRetries) | ||
| } | ||
|
|
||
| func newStoreWithRetry(path string, maxRetries int) (kv.Storage, error) { | ||
| storeURL, err := url.Parse(path) | ||
| if err != nil { | ||
| return nil, errors.Trace(err) | ||
| } | ||
|
|
||
| name := strings.ToLower(storeURL.Scheme) | ||
| d, ok := stores[name] | ||
| if !ok { | ||
| return nil, errors.Errorf("invalid uri format, storage %s is not registered", name) | ||
| } | ||
|
|
||
| var s kv.Storage | ||
| err = util.RunWithRetry(maxRetries, util.RetryInterval, func() (bool, error) { | ||
| log.Infof("new store") | ||
| s, err = d.Open(path) | ||
| return kv.IsRetryableError(err), err | ||
| }) | ||
| return s, errors.Trace(err) | ||
| } |
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