// ProcessConsensusChange receives consensus changes from the consensus set and
// parses them for valid host announcements.
func (af *announcementFinder) ProcessConsensusChange(cc modules.ConsensusChange) {
for _, block := range cc.AppliedBlocks {
for _, txn := range block.Transactions {
for _, arb := range txn.ArbitraryData {
addr, pubKey, err := modules.DecodeAnnouncement(arb)
if err == nil {
af.netAddresses = append(af.netAddresses, addr)
af.publicKeys = append(af.publicKeys, pubKey)
}
}
}
}
}
// findHostAnnouncements returns a list of the host announcements found within
// a given block. No check is made to see that the ip address found in the
// announcement is actually a valid ip address.
func findHostAnnouncements(b types.Block) (announcements []modules.HostDBEntry) {
for _, t := range b.Transactions {
// the HostAnnouncement must be prefaced by the standard host
// announcement string
for _, arb := range t.ArbitraryData {
addr, pubKey, err := modules.DecodeAnnouncement(arb)
if err != nil {
continue
}
// Add the announcement to the slice being returned.
var host modules.HostDBEntry
host.NetAddress = addr
host.PublicKey = pubKey
announcements = append(announcements, host)
}
}
return
}