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fix: ethmonitor temporary resource leak #120

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merged 3 commits into from
Apr 16, 2024
Merged

fix: ethmonitor temporary resource leak #120

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1768160
Fixes: timer resource leak where it can be garbage collected only aft…
marino39 Apr 16, 2024
80d4cad
fix: blockTimer
marino39 Apr 16, 2024
add1519
restore defaults
marino39 Apr 16, 2024
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8 changes: 6 additions & 2 deletions ethmonitor/ethmonitor.go
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Original file line number Diff line number Diff line change
Expand Up @@ -334,13 +334,15 @@ func (m *Monitor) listenNewHead() <-chan uint64 {
goto reconnect
}

blockTimer := time.NewTimer(3 * m.options.ExpectedBlockInterval)
for {
blockTimer := time.NewTimer(3 * m.options.ExpectedBlockInterval)

select {
case <-m.ctx.Done():
// if we're done, we'll unsubscribe and close the nextBlock channel
sub.Unsubscribe()
close(nextBlock)
blockTimer.Stop()
return

case err := <-sub.Err():
Expand All @@ -350,6 +352,7 @@ func (m *Monitor) listenNewHead() <-chan uint64 {
sub.Unsubscribe()

streamingErrorLastTime = time.Now()
blockTimer.Stop()
goto reconnect

case <-blockTimer.C:
Expand All @@ -361,7 +364,7 @@ func (m *Monitor) listenNewHead() <-chan uint64 {
goto reconnect

case newHead := <-newHeads:
blockTimer.Reset(3 * m.options.ExpectedBlockInterval)
blockTimer.Stop()

latestHeadBlock.Store(newHead.Number.Uint64())
select {
Expand Down Expand Up @@ -395,6 +398,7 @@ func (m *Monitor) listenNewHead() <-chan uint64 {
case <-m.ctx.Done():
// if we're done, we'll close the nextBlock channel
close(nextBlock)
retryStreamingTimer.Stop()
return

case <-time.After(time.Duration(m.pollInterval.Load())):
Expand Down
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