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offchain_config_digester.go
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/
offchain_config_digester.go
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package injective
import (
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/smartcontractkit/libocr/offchainreporting2/types"
chaintypes "github.com/InjectiveLabs/chainlink-injective/injective/types"
)
const ConfigDigestPrefixCosmos types.ConfigDigestPrefix = 2
var _ types.OffchainConfigDigester = CosmosOffchainConfigDigester{}
type CosmosOffchainConfigDigester struct {
ChainID string
FeedID string
}
func (d CosmosOffchainConfigDigester) ConfigDigest(cc types.ContractConfig) (types.ConfigDigest, error) {
signers := make([]string, 0, len(cc.Signers))
for _, acc := range cc.Signers {
signers = append(signers, sdk.AccAddress(acc).String())
}
transmitters := make([]string, 0, len(cc.Transmitters))
for _, acc := range cc.Transmitters {
addr, err := sdk.AccAddressFromBech32(string(acc))
if err != nil {
return types.ConfigDigest{}, err
}
transmitters = append(transmitters, addr.String())
}
chainContractConfig := &chaintypes.ContractConfig{
ConfigCount: cc.ConfigCount,
Signers: signers,
Transmitters: transmitters,
F: uint32(cc.F),
OnchainConfig: cc.OnchainConfig,
OffchainConfigVersion: cc.OffchainConfigVersion,
OffchainConfig: cc.OffchainConfig,
}
configDigest := configDigestFromBytes(chainContractConfig.Digest(d.ChainID, d.FeedID))
return configDigest, nil
}
func (d CosmosOffchainConfigDigester) ConfigDigestPrefix() types.ConfigDigestPrefix {
return ConfigDigestPrefixCosmos
}
func configDigestFromBytes(buf []byte) types.ConfigDigest {
var configDigest types.ConfigDigest
if len(buf) != len(configDigest) {
// assertion
panic("buffer is not matching digest/hash length (32)")
}
if n := copy(configDigest[:], buf); n != len(configDigest) {
// assertion
panic("unexpectedly short read")
}
if configDigest[0] != 0 || types.ConfigDigestPrefix(configDigest[1]) != ConfigDigestPrefixCosmos {
// assertion
panic("wrong ConfigDigestPrefix")
}
return configDigest
}