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feat(dot/rpc): implement sync_state_genSyncSpec RPC call (ChainSafe#1827
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Original file line number | Diff line number | Diff line change |
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// 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/>. | ||
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package modules | ||
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import ( | ||
"net/http" | ||
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"github.com/ChainSafe/gossamer/lib/common" | ||
"github.com/ChainSafe/gossamer/lib/genesis" | ||
) | ||
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// GenSyncSpecRequest represents request to get chain specification. | ||
type GenSyncSpecRequest struct { | ||
Raw bool | ||
} | ||
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// SyncStateModule is an RPC module to interact with sync state methods. | ||
type SyncStateModule struct { | ||
syncStateAPI SyncStateAPI | ||
} | ||
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// NewSyncStateModule creates an instance of SyncStateModule given SyncStateAPI. | ||
func NewSyncStateModule(syncStateAPI SyncStateAPI) *SyncStateModule { | ||
return &SyncStateModule{syncStateAPI: syncStateAPI} | ||
} | ||
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// 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 | ||
} | ||
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*res = *g | ||
return nil | ||
} | ||
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// syncState implements SyncStateAPI. | ||
type syncState struct { | ||
chainSpecification *genesis.Genesis | ||
} | ||
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// 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 | ||
} | ||
} | ||
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return s.chainSpecification, nil | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
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package modules | ||
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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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