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core/rawdb: implement sequential reads in freezer_table (#23117)

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* core/rawdb: implement sequential reads in freezer_table

* core/rawdb, ethdb: add sequential reader to db interface

* core/rawdb: lint nitpicks

* core/rawdb: fix some nitpicks

* core/rawdb: fix flaw with deferred reads not being performed

* core/rawdb: better documentation
This commit is contained in:
Martin Holst Swende
2021-08-13 10:51:01 +02:00
committed by GitHub
parent a580f7d6c5
commit 5f98020a21
6 changed files with 309 additions and 52 deletions
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7
ethdb/database.go
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@@ -76,6 +76,13 @@ type AncientReader interface {
// Ancient retrieves an ancient binary blob from the append-only immutable files.
Ancient(kind string, number uint64) ([]byte, error)
// ReadAncients retrieves multiple items in sequence, starting from the index 'start'.
// It will return
// - at most 'count' items,
// - at least 1 item (even if exceeding the maxBytes), but will otherwise
// return as many items as fit into maxBytes.
ReadAncients(kind string, start, count, maxBytes uint64) ([][]byte, error)
// Ancients returns the ancient item numbers in the ancient store.
Ancients() (uint64, error)