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exp/lighthorizon: Add parameters to preload ledger cache. #4615

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merged 5 commits into from
Oct 11, 2022
Merged

exp/lighthorizon: Add parameters to preload ledger cache. #4615

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e88d772
Add ability to preload cache in parallel after launching webserver.
Shaptic Sep 27, 2022
9ed669b
Default to 1 day of ledgers @ 6s each
Shaptic Sep 27, 2022
6c29639
Add logging instead of silent failure
Shaptic Oct 11, 2022
ea199e3
Fatal instead of warning
Shaptic Oct 11, 2022
267757e
Check that startLedger is valid
Shaptic Oct 11, 2022
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Check that startLedger is valid
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@Shaptic
Shaptic committed Oct 11, 2022
commit 267757e69bf1cd33761696eb87595a183272fce7
13 changes: 9 additions & 4 deletions exp/lighthorizon/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -109,20 +109,25 @@ break down accounts by active ledgers.`,
if cachePreloadCount > 0 {
if cacheDir == "" {
log.Fatalf("--ledger-cache-preload=%d specified but no "+
"--ledger-cache directory provided, ignoring...",
"--ledger-cache directory provided.",
cachePreloadCount)
return
} else {
startLedger := latestLedger - cachePreloadCount
startLedger := int(latestLedger) - int(cachePreloadCount)
if cachePreloadStart > 0 {
startLedger = cachePreloadStart
startLedger = int(cachePreloadStart)
}
if startLedger <= 0 {
log.Warnf("Starting ledger invalid (%d), defaulting to 2.",
startLedger)
startLedger = 2
}

log.Infof("Preloading cache at %s with %d ledgers, starting at ledger %d.",
cacheDir, startLedger, cachePreloadCount)
go func() {
tools.BuildCache(sourceUrl, cacheDir,
startLedger, cachePreloadCount, false)
uint32(startLedger), cachePreloadCount, false)
}()
}
}
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