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cmd/geth: implement data import and export (#22931)

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This PR offers two more database sub commands for exporting and importing data.
Two exporters are implemented: preimage and snapshot data respectively. 
The import command is generic, it can take any data export and import into leveldb. 
The data format has a 'magic' for disambiguation, and a version field for future compatibility.
This commit is contained in:
rjl493456442
2021-11-02 18:31:45 +08:00
committed by GitHub
parent 551bd6e721
commit 2e8b58f076
7 changed files with 590 additions and 15 deletions
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6
core/rawdb/accessors_snapshot.go
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@@ -47,7 +47,7 @@ func DeleteSnapshotDisabled(db ethdb.KeyValueWriter) {
// ReadSnapshotRoot retrieves the root of the block whose state is contained in
// the persisted snapshot.
func ReadSnapshotRoot(db ethdb.KeyValueReader) common.Hash {
data, _ := db.Get(snapshotRootKey)
data, _ := db.Get(SnapshotRootKey)
if len(data) != common.HashLength {
return common.Hash{}
}
@@ -57,7 +57,7 @@ func ReadSnapshotRoot(db ethdb.KeyValueReader) common.Hash {
// WriteSnapshotRoot stores the root of the block whose state is contained in
// the persisted snapshot.
func WriteSnapshotRoot(db ethdb.KeyValueWriter, root common.Hash) {
if err := db.Put(snapshotRootKey, root[:]); err != nil {
if err := db.Put(SnapshotRootKey, root[:]); err != nil {
log.Crit("Failed to store snapshot root", "err", err)
}
}
@@ -67,7 +67,7 @@ func WriteSnapshotRoot(db ethdb.KeyValueWriter, root common.Hash) {
// be used during updates, so a crash or failure will mark the entire snapshot
// invalid.
func DeleteSnapshotRoot(db ethdb.KeyValueWriter) {
if err := db.Delete(snapshotRootKey); err != nil {
if err := db.Delete(SnapshotRootKey); err != nil {
log.Crit("Failed to remove snapshot root", "err", err)
}
}