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plugin.go
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plugin.go
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package dkg
import (
"encoding/hex"
"encoding/json"
"fmt"
"math/big"
"github.com/pkg/errors"
"github.com/smartcontractkit/libocr/commontypes"
libocr2 "github.com/smartcontractkit/libocr/offchainreporting2"
"github.com/smartcontractkit/ocr2vrf/altbn_128"
"github.com/smartcontractkit/ocr2vrf/dkg"
"github.com/smartcontractkit/sqlx"
evmclient "github.com/smartcontractkit/chainlink/v2/core/chains/evm/client"
"github.com/smartcontractkit/chainlink/v2/core/logger"
"github.com/smartcontractkit/chainlink/v2/core/services/job"
"github.com/smartcontractkit/chainlink/v2/core/services/keystore"
"github.com/smartcontractkit/chainlink/v2/core/services/ocr2/plugins/dkg/config"
"github.com/smartcontractkit/chainlink/v2/core/services/ocr2/plugins/dkg/persistence"
"github.com/smartcontractkit/chainlink/v2/core/services/pg"
"github.com/smartcontractkit/chainlink/v2/core/services/relay"
evmrelay "github.com/smartcontractkit/chainlink/v2/core/services/relay/evm"
)
func NewDKGServices(
jb job.Job,
ocr2Provider evmrelay.DKGProvider,
lggr logger.Logger,
ocrLogger commontypes.Logger,
dkgSignKs keystore.DKGSign,
dkgEncryptKs keystore.DKGEncrypt,
ethClient evmclient.Client,
oracleArgsNoPlugin libocr2.OracleArgs,
db *sqlx.DB,
qConfig pg.QConfig,
chainID *big.Int,
network relay.Network,
) ([]job.ServiceCtx, error) {
var pluginConfig config.PluginConfig
err := json.Unmarshal(jb.OCR2OracleSpec.PluginConfig.Bytes(), &pluginConfig)
if err != nil {
return nil, errors.Wrap(err, "json unmarshal plugin config")
}
err = config.ValidatePluginConfig(pluginConfig, dkgSignKs, dkgEncryptKs)
if err != nil {
return nil, errors.Wrap(err, "validate plugin config")
}
signKey, err := dkgSignKs.Get(pluginConfig.SigningPublicKey)
if err != nil {
return nil, errors.Wrap(err, "get dkgsign key")
}
encryptKey, err := dkgEncryptKs.Get(pluginConfig.EncryptionPublicKey)
if err != nil {
return nil, errors.Wrap(err, "get dkgencrypt key")
}
onchainDKGClient, err := NewOnchainDKGClient(
jb.OCR2OracleSpec.ContractID,
ethClient)
if err != nil {
return nil, errors.Wrap(err, "new onchain dkg client")
}
onchainContract := dkg.NewOnchainContract(onchainDKGClient, &altbn_128.G2{})
keyConsumer := newDummyKeyConsumer()
keyID, err := DecodeKeyID(pluginConfig.KeyID)
if err != nil {
return nil, errors.Wrap(err, "decode key ID")
}
shareDB := persistence.NewShareDB(db, lggr.Named("DKGShareDB"), qConfig, chainID, network)
oracleArgsNoPlugin.ReportingPluginFactory = dkg.NewReportingPluginFactory(
encryptKey.KyberScalar(),
signKey.KyberScalar(),
keyID,
onchainContract,
ocrLogger,
keyConsumer,
shareDB,
)
oracle, err := libocr2.NewOracle(oracleArgsNoPlugin)
if err != nil {
return nil, errors.Wrap(err, "error calling NewOracle")
}
return []job.ServiceCtx{ocr2Provider, job.NewServiceAdapter(oracle)}, nil
}
func DecodeKeyID(val string) (byteArray [32]byte, err error) {
decoded, err := hex.DecodeString(val)
if err != nil {
return [32]byte{}, errors.Wrap(err, "hex decode string")
}
if len(decoded) != 32 {
return [32]byte{}, fmt.Errorf("expected value to be 32 bytes but received %d bytes", len(decoded))
}
copy(byteArray[:], decoded)
return
}