prysm-pulse/beacon-chain/blockchain/info.go
terence tsao ebd05fba01
Improve test coverage info.go (#6618)
* Update kv aggregated_test.go
* Update block_test.go
* Update forkchoice_test.go
* Update unaggregated_test.go
* Update prepare_forkchoice_test.go
* Update prune_expired_test.go
* Update atts service_test.go
* Update service_attester_test.go
* Update service_proposer_test.go
* Upate exit service_test.go
* Gaz
* Merge branch 'master' of github.com:prysmaticlabs/prysm
* Move averageBalance from log.go to info.go
* Move avg balance from log.go to info.go
* Add info test
* Remove unused logEpochData in log.go
* Gaz
* Merge branch 'master' into info-cov
* gaz
* Merge refs/heads/master into info-cov
2020-07-16 22:44:43 +00:00

95 lines
2.8 KiB
Go

package blockchain
import (
"encoding/hex"
"fmt"
"net/http"
"github.com/emicklei/dot"
"github.com/prysmaticlabs/prysm/shared/params"
)
const template = `<html>
<head>
<script src="//cdnjs.cloudflare.com/ajax/libs/viz.js/2.1.2/viz.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/viz.js/2.1.2/full.render.js"></script>
<body>
<script type="application/javascript">
var graph = ` + "`%s`;" + `
var viz = new Viz();
viz.renderSVGElement(graph) // reading the graph.
.then(function(element) {
document.body.appendChild(element); // appends to document.
})
.catch(error => {
// Create a new Viz instance (@see Caveats page for more info)
viz = new Viz();
// Possibly display the error
console.error(error);
});
</script>
</head>
</body>
</html>`
// TreeHandler is a handler to serve /tree page in metrics.
func (s *Service) TreeHandler(w http.ResponseWriter, r *http.Request) {
if s.headState(r.Context()) == nil {
if _, err := w.Write([]byte("Unavailable during initial syncing")); err != nil {
log.WithError(err).Error("Failed to render p2p info page")
}
}
nodes := s.forkChoiceStore.Nodes()
graph := dot.NewGraph(dot.Directed)
graph.Attr("rankdir", "RL")
graph.Attr("labeljust", "l")
dotNodes := make([]*dot.Node, len(nodes))
avgBalance := uint64(averageBalance(s.headState(r.Context()).Balances()))
for i := len(nodes) - 1; i >= 0; i-- {
// Construct label for each node.
slot := fmt.Sprintf("%d", nodes[i].Slot)
weight := fmt.Sprintf("%d", nodes[i].Weight/1e9) // Convert unit Gwei to unit ETH.
votes := fmt.Sprintf("%d", nodes[i].Weight/1e9/avgBalance)
index := fmt.Sprintf("%d", i)
g := nodes[i].Graffiti[:]
graffiti := hex.EncodeToString(g[:8])
label := "slot: " + slot + "\n votes: " + votes + "\n weight: " + weight + "\n graffiti: " + graffiti
var dotN dot.Node
if nodes[i].Parent != ^uint64(0) {
dotN = graph.Node(index).Box().Attr("label", label)
}
if nodes[i].Slot == s.headSlot() &&
nodes[i].BestDescendant == ^uint64(0) &&
nodes[i].Parent != ^uint64(0) {
dotN = dotN.Attr("color", "green")
}
dotNodes[i] = &dotN
}
for i := len(nodes) - 1; i >= 0; i-- {
if nodes[i].Parent != ^uint64(0) && nodes[i].Parent < uint64(len(dotNodes)) {
graph.Edge(*dotNodes[i], *dotNodes[nodes[i].Parent])
}
}
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "text/html")
if _, err := fmt.Fprintf(w, template, graph.String()); err != nil {
log.WithError(err).Error("Failed to render p2p info page")
}
}
func averageBalance(balances []uint64) float64 {
total := uint64(0)
for i := 0; i < len(balances); i++ {
total += balances[i]
}
return float64(total) / float64(len(balances)) / float64(params.BeaconConfig().GweiPerEth)
}