get all versions

backport cosmos#11124

store/v2/multi/store.go

@@ -676,6 +676,20 @@ func (rs *Store) CacheWrap() types.CacheMultiStore {
 	return newCacheStore(rs)
 }
 
+// GetAllVersions implements CommitMultiStore.
+// https://github.com/cosmos/cosmos-sdk/pull/11124
+func (rs *Store) GetAllVersions() []int {
+	vs, err := rs.stateDB.Versions()
+	if err != nil {
+		panic(err)
+	}
+	var ret []int
+	for it := vs.Iterator(); it.Next(); {
+		ret = append(ret, int(it.Value()))
+	}
+	return ret
+}
+
 // parsePath expects a format like /<storeName>[/<subpath>]
 // Must start with /, subpath may be empty
 // Returns error if it doesn't start with /

store/v2/multi/v1asv2.go

@@ -80,6 +80,8 @@ func (s store1as2) SetInitialVersion(ver uint64) error {
 func (s store1as2) SetTracer(w io.Writer)                { s.SetTracer(w) }
 func (s store1as2) SetTracingContext(tc v2.TraceContext) { s.SetTracingContext(tc) }
 
+func (s store1as2) GetAllVersions() []int { panic("unsupported: GetAllVersions") }
+
 // cache store
 
 func (s cacheStore1as2) CacheWrap() v2.CacheMultiStore {

store/v2/types.go

@@ -94,6 +94,9 @@ type CommitMultiStore interface {
 	Close() error
 	// Defines the minimum version number that can be saved by this store.
 	SetInitialVersion(uint64) error
+	// Gets all versions in the DB
+	// https://github.com/cosmos/cosmos-sdk/pull/11124
+	GetAllVersions() []int
 }
 
 // CacheMultiStore defines a branch of the root state which can be written back to the source store.