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[facotry] add factoryWithHeight for archive mode
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| // Copyright (c) 2020 IoTeX Foundation | ||
| // This source code is provided 'as is' and no warranties are given as to title or non-infringement, merchantability | ||
| // or fitness for purpose and, to the extent permitted by law, all liability for your use of the code is disclaimed. | ||
| // This source code is governed by Apache License 2.0 that can be found in the LICENSE file. | ||
|
|
||
| package factory | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "github.com/pkg/errors" | ||
|
|
||
| "github.com/iotexproject/iotex-core/v2/action/protocol" | ||
| "github.com/iotexproject/iotex-core/v2/state" | ||
| ) | ||
|
|
||
| type factoryWithHeight struct { | ||
| *factory | ||
| height uint64 | ||
| } | ||
|
|
||
| func (sf *factoryWithHeight) State(s interface{}, opts ...protocol.StateOption) (uint64, error) { | ||
| sf.mutex.RLock() | ||
| defer sf.mutex.RUnlock() | ||
| cfg, err := processOptions(opts...) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| if cfg.Keys != nil { | ||
| return 0, errors.Wrap(ErrNotSupported, "Read state with keys option has not been implemented yet") | ||
| } | ||
| if sf.height > sf.currentChainHeight { | ||
| return 0, errors.Errorf("query height %d is higher than tip height %d", sf.height, sf.currentChainHeight) | ||
| } | ||
| return sf.height, sf.stateAtHeight(sf.height, cfg.Namespace, cfg.Key, s) | ||
| } | ||
|
|
||
| func (sf *factoryWithHeight) stateAtHeight(height uint64, ns string, key []byte, s interface{}) error { | ||
| if !sf.saveHistory { | ||
| return ErrNoArchiveData | ||
| } | ||
| tlt, err := newTwoLayerTrie(ArchiveTrieNamespace, sf.dao, fmt.Sprintf("%s-%d", ArchiveTrieRootKey, height), false) | ||
| if err != nil { | ||
| return errors.Wrapf(err, "failed to generate trie for %d", height) | ||
| } | ||
| if err := tlt.Start(context.Background()); err != nil { | ||
| return err | ||
| } | ||
| defer tlt.Stop(context.Background()) | ||
|
|
||
| value, err := readStateFromTLT(tlt, ns, key) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return state.Deserialize(s, value) | ||
| } | ||
|
|
||
| func (sf *factoryWithHeight) States(opts ...protocol.StateOption) (uint64, state.Iterator, error) { | ||
| sf.mutex.RLock() | ||
| defer sf.mutex.RUnlock() | ||
| if sf.height > sf.currentChainHeight { | ||
| return 0, nil, errors.Errorf("query height %d is higher than tip height %d", sf.height, sf.currentChainHeight) | ||
| } | ||
| cfg, err := processOptions(opts...) | ||
| if err != nil { | ||
| return 0, nil, err | ||
| } | ||
| if cfg.Keys != nil { | ||
| return 0, nil, errors.Wrap(ErrNotSupported, "Read states with keys option has not been implemented yet") | ||
| } | ||
| tlt, err := newTwoLayerTrie(ArchiveTrieNamespace, sf.dao, fmt.Sprintf("%s-%d", ArchiveTrieRootKey, sf.height), false) | ||
| if err != nil { | ||
| return 0, nil, errors.Wrapf(err, "failed to generate trie for %d", sf.height) | ||
| } | ||
| if err := tlt.Start(context.Background()); err != nil { | ||
| return 0, nil, err | ||
| } | ||
| defer tlt.Stop(context.Background()) | ||
| keys, values, err := readStatesFromTLT(tlt, cfg.Namespace, cfg.Keys) | ||
| if err != nil { | ||
| return 0, nil, err | ||
| } | ||
| iter, err := state.NewIterator(keys, values) | ||
| if err != nil { | ||
| return 0, nil, err | ||
| } | ||
| return sf.height, iter, err | ||
| } |
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