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feat(dot/rpc): implement sync_state_genSyncSpec RPC call (#1827)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| // 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 modules | ||
|
|
||
| import ( | ||
| "net/http" | ||
|
|
||
| "github.com/ChainSafe/gossamer/lib/common" | ||
| "github.com/ChainSafe/gossamer/lib/genesis" | ||
| ) | ||
|
|
||
| // GenSyncSpecRequest represents request to get chain specification. | ||
| type GenSyncSpecRequest struct { | ||
| Raw bool | ||
| } | ||
|
|
||
| // SyncStateModule is an RPC module to interact with sync state methods. | ||
| type SyncStateModule struct { | ||
| syncStateAPI SyncStateAPI | ||
| } | ||
|
|
||
| // NewSyncStateModule creates an instance of SyncStateModule given SyncStateAPI. | ||
| func NewSyncStateModule(syncStateAPI SyncStateAPI) *SyncStateModule { | ||
| return &SyncStateModule{syncStateAPI: syncStateAPI} | ||
| } | ||
|
|
||
| // GenSyncSpec returns the JSON serialised chain specification running the node | ||
| // (i.e. the current state state), with a sync state. | ||
| func (ss *SyncStateModule) GenSyncSpec(_ *http.Request, req *GenSyncSpecRequest, res *genesis.Genesis) error { | ||
| g, err := ss.syncStateAPI.GenSyncSpec(req.Raw) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| *res = *g | ||
| return nil | ||
| } | ||
|
|
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| // syncState implements SyncStateAPI. | ||
| type syncState struct { | ||
| chainSpecification *genesis.Genesis | ||
| } | ||
|
|
||
| // NewStateSync creates an instance of SyncStateAPI given a chain specification. | ||
| func NewStateSync(gData *genesis.Data, storageAPI StorageAPI) (SyncStateAPI, error) { | ||
| tmpGen := &genesis.Genesis{ | ||
| Name: "", | ||
| ID: "", | ||
| Bootnodes: nil, | ||
| ProtocolID: "", | ||
| Genesis: genesis.Fields{ | ||
| Runtime: nil, | ||
| }, | ||
| } | ||
| tmpGen.Genesis.Raw = make(map[string]map[string]string) | ||
| tmpGen.Genesis.Runtime = make(map[string]map[string]interface{}) | ||
|
|
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| // set genesis fields data | ||
| ent, err := storageAPI.Entries(nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| err = genesis.BuildFromMap(ent, tmpGen) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| tmpGen.Name = gData.Name | ||
| tmpGen.ID = gData.ID | ||
| tmpGen.Bootnodes = common.BytesToStringArray(gData.Bootnodes) | ||
| tmpGen.ProtocolID = gData.ProtocolID | ||
|
|
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| return syncState{chainSpecification: tmpGen}, nil | ||
| } | ||
|
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| // GenSyncSpec returns the JSON serialised chain specification running the node | ||
| // (i.e. the current state), with a sync state. | ||
| func (s syncState) GenSyncSpec(raw bool) (*genesis.Genesis, error) { | ||
| if raw { | ||
| err := s.chainSpecification.ToRaw() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
|
|
||
| return s.chainSpecification, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| package modules | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "io/ioutil" | ||
| "path/filepath" | ||
| "testing" | ||
|
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| "github.com/ChainSafe/gossamer/lib/genesis" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
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| const GssmrGenesisPath = "../../../chain/gssmr/genesis.json" | ||
|
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| func TestSyncStateModule(t *testing.T) { | ||
| fp, err := filepath.Abs(GssmrGenesisPath) | ||
| require.NoError(t, err) | ||
|
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| data, err := ioutil.ReadFile(filepath.Clean(fp)) | ||
| require.NoError(t, err) | ||
|
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| g := new(genesis.Genesis) | ||
| err = json.Unmarshal(data, g) | ||
| require.NoError(t, err) | ||
|
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| module := NewSyncStateModule(syncState{chainSpecification: g}) | ||
|
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| req := GenSyncSpecRequest{ | ||
| Raw: true, | ||
| } | ||
| var res genesis.Genesis | ||
|
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| err = module.GenSyncSpec(nil, &req, &res) | ||
| require.NoError(t, err) | ||
| } |
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