cosmos-sdk/store/v2/transient/store.go

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feat: ADR-040: Add `RootStore` implementation (#10430) ## Description Part of: https://github.com/cosmos/cosmos-sdk/issues/10192 Introduces a new `RootStore` type in the `store/v2` package and an implementation, without yet replacing the `MultiStore` or refactoring its use within the SDK (which will happen in the follow up: https://github.com/cosmos/cosmos-sdk/pull/10174). Specified by [ADR-040](https://github.com/cosmos/cosmos-sdk/blob/1326fa2a7dfc3d83cf23dc1c1f33ff131152ad60/docs/architecture/adr-040-storage-and-smt-state-commitments.md). Fixes https://github.com/cosmos/cosmos-sdk/issues/10651 Fixes https://github.com/cosmos/cosmos-sdk/issues/10263 --- ### Author Checklist *All items are required. Please add a note to the item if the item is not applicable and please add links to any relevant follow up issues.* I have... - [x] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title - [ ] added `!` to the type prefix if API or client breaking change - [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting)) - [x] provided a link to the relevant issue or specification - [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules) - [x] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing) - [x] added a changelog entry to `CHANGELOG.md` - [x] included comments for [documenting Go code](https://blog.golang.org/godoc) - [x] updated the relevant documentation or specification - [ ] reviewed "Files changed" and left comments if necessary - [ ] confirmed all CI checks have passed ### Reviewers Checklist *All items are required. Please add a note if the item is not applicable and please add your handle next to the items reviewed if you only reviewed selected items.* I have... - [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title - [ ] confirmed `!` in the type prefix if API or client breaking change - [ ] confirmed all author checklist items have been addressed - [ ] reviewed state machine logic - [ ] reviewed API design and naming - [ ] reviewed documentation is accurate - [ ] reviewed tests and test coverage - [ ] manually tested (if applicable)
2021-12-16 05:09:57 -08:00
package transient
import (
dbm "github.com/cosmos/cosmos-sdk/db"
"github.com/cosmos/cosmos-sdk/db/memdb"
"github.com/cosmos/cosmos-sdk/store/types"
"github.com/cosmos/cosmos-sdk/store/v2/dbadapter"
)
var (
_ types.KVStore = (*Store)(nil)
_ types.Committer = (*Store)(nil)
)
// Store is a wrapper for a memory store which does not persist data.
type Store struct {
dbadapter.Store
conn dbm.DBConnection
}
// NewStore constructs a new transient store.
func NewStore() *Store {
db := memdb.NewDB()
return &Store{
Store: dbadapter.Store{DB: db.ReadWriter()},
conn: db,
}
}
// Implements Store.
func (ts *Store) GetStoreType() types.StoreType {
return types.StoreTypeTransient
}
// Implements CommitStore
// Commit cleans up Store.
func (ts *Store) Commit() (id types.CommitID) {
ts.DB.Discard()
ts.Store = dbadapter.Store{DB: ts.conn.ReadWriter()}
return
}
func (ts *Store) SetPruning(types.PruningOptions) {}
func (ts *Store) GetPruning() types.PruningOptions { return types.PruningOptions{} }
func (ts *Store) LastCommitID() (id types.CommitID) { return }