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package types
import (
"fmt"
cmn "github.com/tendermint/tendermint/libs/common"
)
// Heartbeat is a simple vote-like structure so validators can
// alert others that they are alive and waiting for transactions.
// Note: We aren't adding ",omitempty" to Heartbeat's
// json field tags because we always want the JSON
// representation to be in its canonical form.
type Heartbeat struct {
ValidatorAddress Address `json:"validator_address"`
ValidatorIndex int `json:"validator_index"`
Height int64 `json:"height"`
Round int `json:"round"`
Sequence int `json:"sequence"`
Signature []byte `json:"signature"`
}
// SignBytes returns the Heartbeat bytes for signing.
// It panics if the Heartbeat is nil.
func (heartbeat *Heartbeat) SignBytes(chainID string) []byte {
bz, err := cdc.MarshalJSON(CanonicalHeartbeat(chainID, heartbeat))
if err != nil {
panic(err)
}
return bz
}
// Copy makes a copy of the Heartbeat.
func (heartbeat *Heartbeat) Copy() *Heartbeat {
if heartbeat == nil {
return nil
}
heartbeatCopy := *heartbeat
return &heartbeatCopy
}
// String returns a string representation of the Heartbeat.
func (heartbeat *Heartbeat) String() string {
if heartbeat == nil {
return "nil-heartbeat"
}
return fmt.Sprintf("Heartbeat{%v:%X %v/%02d (%v) %v}",
heartbeat.ValidatorIndex, cmn.Fingerprint(heartbeat.ValidatorAddress),
heartbeat.Height, heartbeat.Round, heartbeat.Sequence,
fmt.Sprintf("/%X.../", cmn.Fingerprint(heartbeat.Signature[:])))
}