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dnsseeder
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dnsseed: move first crawl into goroutine

This commit is contained in:
George Tankersley 2020-05-29 16:25:03 -04:00
parent be7ce4daad
commit 3afe386840
1 changed files with 12 additions and 12 deletions
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24
dnsseed/setup.go
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@ -78,20 +78,14 @@ func setup(c *caddy.Controller) error {
// Send the initial request for more addresses; spawns goroutines to process the responses.
// Ready() will flip to true once we've received and confirmed at least 10 peers.
go runCrawl(seeder)
err = seeder.WaitForAddresses(1, 30*time.Second)
if err != nil {
return plugin.Error(pluginName, c.Err("went 30 second without a single address"))
}
// Start the update timer
go func() {
log.Infof("Starting update timer. Will crawl every %.1f minutes.", opts.updateInterval.Minutes())
runCrawl(opts.networkName, seeder)
log.Infof("Starting update timer on %s. Will crawl every %.1f minutes.", opts.networkName, opts.updateInterval.Minutes())
randByte := []byte{0}
for {
select {
case <-time.After(opts.updateInterval):
runCrawl(seeder)
runCrawl(opts.networkName, seeder)
crypto_rand.Read(randByte[:])
if randByte[0] >= byte(192) {
// About 25% of the time, retry the blacklist.
@ -103,6 +97,11 @@ func setup(c *caddy.Controller) error {
}
}()
err = seeder.WaitForAddresses(1, 30*time.Second)
if err != nil {
return plugin.Error(pluginName, c.Err("went 30 second without learning a single address"))
}
// Add the Plugin to CoreDNS, so Servers can use it in their plugin chain.
dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
return ZcashSeeder{
@ -175,8 +174,8 @@ func parseConfig(c *caddy.Controller) (*options, error) {
return opts, nil
}
func runCrawl(seeder *zcash.Seeder) {
// log.Infof("[%s] Beginning crawl", time.Now().Format("2006/01/02 15:04:05"))
func runCrawl(name string, seeder *zcash.Seeder) {
log.Infof("[%s] Beginning %s crawl", time.Now().Format("2006/01/02 15:04:05"), name)
start := time.Now()
// Slow motion crawl: we'll get them all eventually!
@ -195,8 +194,9 @@ func runCrawl(seeder *zcash.Seeder) {
elapsed := time.Now().Sub(start).Truncate(time.Second).Seconds()
log.Infof(
"[%s] Crawl complete, met %d new peers of %d in %.0f seconds",
"[%s] %s crawl complete, met %d new peers of %d in %.0f seconds",
time.Now().Format("2006/01/02 15:04:05"),
name,
newPeerCount,
seeder.GetPeerCount(),
elapsed,