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feat: dot/state: implement import-state subcommand (#1455)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| // Copyright 2019 ChainSafe Systems (ON) Corp. | ||
| // This file is part of gossamer. | ||
| // | ||
| // The gossamer library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The gossamer library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the gossamer library. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| package dot | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "errors" | ||
| "io/ioutil" | ||
| "math/big" | ||
| "path/filepath" | ||
|
|
||
| "github.com/ChainSafe/gossamer/dot/state" | ||
| "github.com/ChainSafe/gossamer/dot/types" | ||
| "github.com/ChainSafe/gossamer/lib/common" | ||
| "github.com/ChainSafe/gossamer/lib/trie" | ||
|
|
||
| log "github.com/ChainSafe/log15" | ||
| ) | ||
|
|
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| // ImportState imports the state in the given files to the database with the given path. | ||
| func ImportState(basepath, stateFP, headerFP string, firstSlot uint64) error { | ||
| tr, err := newTrieFromPairs(stateFP) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| header, err := newHeaderFromFile(headerFP) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| log.Info("ImportState", "header", header) | ||
|
|
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| srv := state.NewService(basepath, log.LvlInfo) | ||
| return srv.Import(header, tr, firstSlot) | ||
| } | ||
|
|
||
| func newTrieFromPairs(filename string) (*trie.Trie, error) { | ||
| data, err := ioutil.ReadFile(filepath.Clean(filename)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| pairs := make([]interface{}, 0) | ||
| err = json.Unmarshal(data, &pairs) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| entries := make(map[string]string) | ||
| for _, pair := range pairs { | ||
| pairArr := pair.([]interface{}) | ||
| if len(pairArr) != 2 { | ||
| return nil, errors.New("state file contains invalid pair") | ||
| } | ||
| entries[pairArr[0].(string)] = pairArr[1].(string) | ||
| } | ||
|
|
||
| tr := trie.NewEmptyTrie() | ||
| err = tr.LoadFromMap(entries) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return tr, nil | ||
| } | ||
|
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| func newHeaderFromFile(filename string) (*types.Header, error) { | ||
| data, err := ioutil.ReadFile(filepath.Clean(filename)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| jsonHeader := make(map[string]interface{}) | ||
| err = json.Unmarshal(data, &jsonHeader) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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||
| hexNum, ok := jsonHeader["number"].(string) | ||
| if !ok { | ||
| return nil, errors.New("invalid number field in header JSON") | ||
| } | ||
|
|
||
| numBytes := common.MustHexToBytes(hexNum) | ||
| num := big.NewInt(0).SetBytes(numBytes) | ||
|
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||
| parentHashStr, ok := jsonHeader["parentHash"].(string) | ||
| if !ok { | ||
| return nil, errors.New("invalid parentHash field in header JSON") | ||
| } | ||
| parentHash := common.MustHexToHash(parentHashStr) | ||
|
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||
| stateRootStr, ok := jsonHeader["stateRoot"].(string) | ||
| if !ok { | ||
| return nil, errors.New("invalid stateRoot field in header JSON") | ||
| } | ||
| stateRoot := common.MustHexToHash(stateRootStr) | ||
|
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||
| extrinsicsRootStr, ok := jsonHeader["extrinsicsRoot"].(string) | ||
| if !ok { | ||
| return nil, errors.New("invalid extrinsicsRoot field in header JSON") | ||
| } | ||
| extrinsicsRoot := common.MustHexToHash(extrinsicsRootStr) | ||
|
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| digestRaw, ok := jsonHeader["digest"].(map[string]interface{}) | ||
| if !ok { | ||
| return nil, errors.New("invalid digest field in header JSON") | ||
| } | ||
| logs := digestRaw["logs"].([]interface{}) | ||
|
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| digest := types.Digest{} | ||
|
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| for _, log := range logs { | ||
| digestBytes := common.MustHexToBytes(log.(string)) | ||
| r := &bytes.Buffer{} | ||
| _, _ = r.Write(digestBytes) | ||
| digestItem, err := types.DecodeDigestItem(r) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| digest = append(digest, digestItem) | ||
| } | ||
|
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| header := &types.Header{ | ||
| ParentHash: parentHash, | ||
| Number: num, | ||
| StateRoot: stateRoot, | ||
| ExtrinsicsRoot: extrinsicsRoot, | ||
| Digest: digest, | ||
| } | ||
|
|
||
| return header, nil | ||
| } |
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