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cosmos-sdk
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fixes from my review

This commit is contained in:
Ethan Buchman 2017-12-03 17:55:44 -05:00 committed by Jae Kwon
parent 8550e79665
commit 7a9014fcaf
1 changed files with 20 additions and 20 deletions
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28
store/iavlstore.go
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@ -13,24 +13,27 @@ import (
// NewIAVLLoader returns a CommitterLoader that returns
// an IAVLCommitter
func NewIAVLLoader(dbName string, cacheSize int, history uint64) CommitterLoader {
func NewIAVLLoader(dbName string, cacheSize int, nHistoricalVersions uint64) CommitterLoader {
l := iavlLoader{
dbName: dbName,
cacheSize: cacheSize,
history: history,
nHistoricalVersions: nHistoricalVersions,
}
return CommitterLoader(l.Load)
}
var _ CacheWrappable = (*IAVLCommitter)(nil)
var _ Committer = (*IAVLCommitter)(nil)
// IAVLCommitter Implements IterKVStore and Committer
type IAVLCommitter struct {
// we must store the last height here, as it is needed
// for saving the versioned tree
lastHeight uint64
// history is how many old versions we hold onto,
// nHistoricalVersions is how many old versions we hold onto,
// uses a naive "hold last X versions" algorithm
history uint64
nHistoricalVersions uint64
// this is all historical data and connection to
// the db
@ -44,11 +47,11 @@ type IAVLCommitter struct {
// NewIAVLCommitter properly initializes a committer
// that is ready to use as a IterKVStore
func NewIAVLCommitter(tree *iavl.VersionedTree,
lastHeight uint64, history uint64) *IAVLCommitter {
lastHeight uint64, nHistoricalVersions uint64) *IAVLCommitter {
i := &IAVLCommitter{
tree: tree,
lastHeight: lastHeight,
history: history,
nHistoricalVersions: nHistoricalVersions,
}
i.updateStore()
return i
@ -73,8 +76,8 @@ func (i *IAVLCommitter) Commit() CommitID {
i.updateStore()
// release an old version of history
if i.history <= i.lastHeight {
release := i.lastHeight - i.history
if i.nHistoricalVersions <= i.lastHeight {
release := i.lastHeight - i.nHistoricalVersions
i.tree.DeleteVersion(release)
}
@ -89,9 +92,6 @@ func (i *IAVLCommitter) updateStore() {
i.IAVLStore = IAVLStore{i.tree.Tree()}
}
var _ CacheWrappable = (*IAVLCommitter)(nil)
var _ Committer = (*IAVLCommitter)(nil)
// IAVLStore is the writable state (not history) and
// implements the IterKVStore interface.
type IAVLStore struct {
@ -214,7 +214,7 @@ func (i *iavlIterator) Release() {
type iavlLoader struct {
dbName string
cacheSize int
history uint64
nHistoricalVersion uint64
}
// Load implements CommitLoader type
@ -222,7 +222,7 @@ func (l iavlLoader) Load(id CommitID) (Committer, error) {
// memory backed case, just for testing
if l.dbName == "" {
tree := iavl.NewVersionedTree(0, dbm.NewMemDB())
store := NewIAVLCommitter(tree, 0, l.history)
store := NewIAVLCommitter(tree, 0, l.nHistoricalVersions)
return store, nil
}
@ -248,6 +248,6 @@ func (l iavlLoader) Load(id CommitID) (Committer, error) {
// TODO: load the version stored in id
store := NewIAVLCommitter(tree, tree.LatestVersion(),
l.history)
l.nHistoricalVersions)
return store, nil
}