You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

84 lines
2.3 KiB

package evidence
import (
"github.com/tendermint/tmlibs/log"
"github.com/tendermint/tendermint/types"
)
// EvidencePool maintains a pool of valid evidence
// in an EvidenceStore.
type EvidencePool struct {
params types.EvidenceParams
logger log.Logger
state types.State // TODO: update this on commit!
evidenceStore *EvidenceStore
// never close
evidenceChan chan types.Evidence
}
func NewEvidencePool(params types.EvidenceParams, evidenceStore *EvidenceStore, state types.State) *EvidencePool {
evpool := &EvidencePool{
params: params,
logger: log.NewNopLogger(),
evidenceStore: evidenceStore,
state: state,
evidenceChan: make(chan types.Evidence),
}
return evpool
}
// SetLogger sets the Logger.
func (evpool *EvidencePool) SetLogger(l log.Logger) {
evpool.logger = l
}
// EvidenceChan returns an unbuffered channel on which new evidence can be received.
func (evpool *EvidencePool) EvidenceChan() <-chan types.Evidence {
return evpool.evidenceChan
}
// PriorityEvidence returns the priority evidence.
func (evpool *EvidencePool) PriorityEvidence() []types.Evidence {
return evpool.evidenceStore.PriorityEvidence()
}
// PendingEvidence returns all uncommitted evidence.
func (evpool *EvidencePool) PendingEvidence() []types.Evidence {
return evpool.evidenceStore.PendingEvidence()
}
// AddEvidence checks the evidence is valid and adds it to the pool.
// Blocks on the EvidenceChan.
func (evpool *EvidencePool) AddEvidence(evidence types.Evidence) (err error) {
// TODO: check if we already have evidence for this
// validator at this height so we dont get spammed
priority, err := evpool.state.VerifyEvidence(evidence)
if err != nil {
// TODO: if err is just that we cant find it cuz we pruned, ignore.
// TODO: if its actually bad evidence, punish peer
return err
}
added := evpool.evidenceStore.AddNewEvidence(evidence, priority)
if !added {
// evidence already known, just ignore
return
}
evpool.logger.Info("Verified new evidence of byzantine behaviour", "evidence", evidence)
// never closes. always safe to send on
evpool.evidenceChan <- evidence
return nil
}
// MarkEvidenceAsCommitted marks all the evidence as committed.
func (evpool *EvidencePool) MarkEvidenceAsCommitted(evidence []types.Evidence) {
for _, ev := range evidence {
evpool.evidenceStore.MarkEvidenceAsCommitted(ev)
}
}