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les: historical data garbage collection (#19570)

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This change introduces garbage collection for the light client. Historical
chain data is deleted periodically. If you want to disable the GC, use
the --light.nopruning flag.
This commit is contained in:
gary rong
2020-07-13 17:02:54 +08:00
committed by GitHub
parent b8dd0890b3
commit 6eef141aef
45 changed files with 841 additions and 213 deletions
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9
core/chain_indexer.go
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@ -46,6 +46,9 @@ type ChainIndexerBackend interface {
// Commit finalizes the section metadata and stores it into the database.
Commit() error
// Prune deletes the chain index older than the given threshold.
Prune(threshold uint64) error
}
// ChainIndexerChain interface is used for connecting the indexer to a blockchain
@ -386,7 +389,6 @@ func (c *ChainIndexer) processSection(section uint64, lastHead common.Hash) (com
c.log.Trace("Processing new chain section", "section", section)
// Reset and partial processing
if err := c.backend.Reset(c.ctx, section, lastHead); err != nil {
c.setValidSections(0)
return common.Hash{}, err
@ -459,6 +461,11 @@ func (c *ChainIndexer) AddChildIndexer(indexer *ChainIndexer) {
}
}
// Prune deletes all chain data older than given threshold.
func (c *ChainIndexer) Prune(threshold uint64) error {
return c.backend.Prune(threshold)
}
// loadValidSections reads the number of valid sections from the index database
// and caches is into the local state.
func (c *ChainIndexer) loadValidSections() {