package types import ( "fmt" "io" "github.com/tendermint/go-crypto" "github.com/tendermint/go-wire" cmn "github.com/tendermint/tmlibs/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 crypto.Signature `json:"signature"` } // WriteSignBytes writes the Heartbeat for signing. // It panics if the Heartbeat is nil. func (heartbeat *Heartbeat) WriteSignBytes(chainID string, w io.Writer, n *int, err *error) { wire.WriteJSON(CanonicalJSONOnceHeartbeat{ chainID, CanonicalHeartbeat(heartbeat), }, w, n, err) } // 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, heartbeat.Signature) }