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consensus_state.go
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/
consensus_state.go
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package types
import (
"time"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
tmbytes "github.com/tendermint/tendermint/libs/bytes"
tmtypes "github.com/tendermint/tendermint/types"
clienttypes "github.com/cosmos/ibc-go/v3/modules/core/02-client/types"
commitmenttypes "github.com/cosmos/ibc-go/v3/modules/core/23-commitment/types"
"github.com/cosmos/ibc-go/v3/modules/core/exported"
)
// SentinelRoot is used as a stand-in root value for the consensus state set at the upgrade height
const SentinelRoot = "sentinel_root"
// NewConsensusState creates a new ConsensusState instance.
func NewConsensusState(
timestamp time.Time, root commitmenttypes.MerkleRoot, nextValsHash tmbytes.HexBytes,
) *ConsensusState {
return &ConsensusState{
Timestamp: timestamp,
Root: root,
NextValidatorsHash: nextValsHash,
}
}
// ClientType returns Tendermint
func (ConsensusState) ClientType() string {
return exported.Tendermint
}
// GetRoot returns the commitment Root for the specific
func (cs ConsensusState) GetRoot() exported.Root {
return cs.Root
}
// GetTimestamp returns block time in nanoseconds of the header that created consensus state
func (cs ConsensusState) GetTimestamp() uint64 {
return uint64(cs.Timestamp.UnixNano())
}
// ValidateBasic defines a basic validation for the tendermint consensus state.
// NOTE: ProcessedTimestamp may be zero if this is an initial consensus state passed in by relayer
// as opposed to a consensus state constructed by the chain.
func (cs ConsensusState) ValidateBasic() error {
if cs.Root.Empty() {
return sdkerrors.Wrap(clienttypes.ErrInvalidConsensus, "root cannot be empty")
}
if err := tmtypes.ValidateHash(cs.NextValidatorsHash); err != nil {
return sdkerrors.Wrap(err, "next validators hash is invalid")
}
if cs.Timestamp.Unix() <= 0 {
return sdkerrors.Wrap(clienttypes.ErrInvalidConsensus, "timestamp must be a positive Unix time")
}
return nil
}