From 6f13e515f40ef84ff277d373488c99de49e33f18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Fri, 2 Mar 2018 11:57:11 +0200
Subject: [PATCH] cmd/faucet: update state in background, skip when busy
---
cmd/faucet/faucet.go | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/cmd/faucet/faucet.go b/cmd/faucet/faucet.go
index 095668c86..5bad09bbd 100644
--- a/cmd/faucet/faucet.go
+++ b/cmd/faucet/faucet.go
@@ -533,9 +533,11 @@ func (f *faucet) loop() {
}
defer sub.Unsubscribe()
- for {
- select {
- case head := <-heads:
+ // Start a goroutine to update the state from head notifications in the background
+ update := make(chan *types.Header)
+
+ go func() {
+ for head := range update {
// New chain head arrived, query the current stats and stream to clients
var (
balance *big.Int
@@ -588,6 +590,17 @@ func (f *faucet) loop() {
}
}
f.lock.RUnlock()
+ }
+ }()
+ // Wait for various events and assing to the appropriate background threads
+ for {
+ select {
+ case head := <-heads:
+ // New head arrived, send if for state update if there's none running
+ select {
+ case update <- head:
+ default:
+ }
case <-f.update:
// Pending requests updated, stream to clients
--
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