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refactor(core): remove cosmos-db dependency (cosmos#18848)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| package testkv | ||
|
|
||
| import ( | ||
| dbm "github.com/cosmos/cosmos-db" | ||
|
|
||
| "cosmossdk.io/core/store" | ||
| ) | ||
|
|
||
| type TestStore struct { | ||
| Db dbm.DB | ||
| } | ||
|
|
||
| func (ts TestStore) Get(bz []byte) ([]byte, error) { | ||
| return ts.Db.Get(bz) | ||
| } | ||
|
|
||
| // // Has checks if a key exists. | ||
| func (ts TestStore) Has(key []byte) (bool, error) { | ||
| return ts.Db.Has(key) | ||
| } | ||
|
|
||
| func (ts TestStore) Set(k, v []byte) error { | ||
| return ts.Db.Set(k, v) | ||
| } | ||
|
|
||
| // // SetSync sets the value for the given key, and flushes it to storage before returning. | ||
| func (ts TestStore) SetSync(k, v []byte) error { | ||
| return ts.Db.SetSync(k, v) | ||
| } | ||
|
|
||
| // // Delete deletes the key, or does nothing if the key does not exist. | ||
| // // CONTRACT: key readonly []byte | ||
| func (ts TestStore) Delete(bz []byte) error { | ||
| return ts.Db.Delete(bz) | ||
| } | ||
|
|
||
| // // DeleteSync deletes the key, and flushes the delete to storage before returning. | ||
| func (ts TestStore) DeleteSync(bz []byte) error { | ||
| return ts.Db.DeleteSync(bz) | ||
| } | ||
|
|
||
| func (ts TestStore) Iterator(start, end []byte) (store.Iterator, error) { | ||
| itr, err := ts.Db.Iterator(start, end) | ||
| return IteratorWrapper{itr: itr}, err | ||
| } | ||
|
|
||
| func (ts TestStore) ReverseIterator(start, end []byte) (store.Iterator, error) { | ||
| itr, err := ts.Db.ReverseIterator(start, end) | ||
| return itr, err | ||
| } | ||
|
|
||
| // Close closes the database connection. | ||
| func (ts TestStore) Close() error { | ||
| return ts.Db.Close() | ||
| } | ||
|
|
||
| // NewBatch creates a batch for atomic updates. The caller must call Batch.Close. | ||
| func (ts TestStore) NewBatch() dbm.Batch { | ||
| return ts.Db.NewBatch() | ||
| } | ||
|
|
||
| // NewBatchWithSize create a new batch for atomic updates, but with pre-allocated size. | ||
| // This will does the same thing as NewBatch if the batch implementation doesn't support pre-allocation. | ||
| func (ts TestStore) NewBatchWithSize(i int) dbm.Batch { | ||
| return ts.Db.NewBatchWithSize(i) | ||
| } | ||
|
|
||
| // Print is used for debugging. | ||
| func (ts TestStore) Print() error { | ||
| return ts.Db.Print() | ||
| } | ||
|
|
||
| // Stats returns a map of property values for all keys and the size of the cache. | ||
| func (ts TestStore) Stats() map[string]string { | ||
| return ts.Db.Stats() | ||
| } | ||
|
|
||
| var _ store.Iterator = IteratorWrapper{} | ||
|
|
||
| type IteratorWrapper struct { | ||
| itr dbm.Iterator | ||
| } | ||
|
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||
| // Domain returns the start (inclusive) and end (exclusive) limits of the iterator. | ||
| // CONTRACT: start, end readonly []byte | ||
| func (iw IteratorWrapper) Domain() (start, end []byte) { | ||
| return iw.itr.Domain() | ||
| } | ||
|
|
||
| // Valid returns whether the current iterator is valid. Once invalid, the Iterator remains | ||
| // invalid forever. | ||
| func (iw IteratorWrapper) Valid() bool { | ||
| return iw.itr.Valid() | ||
| } | ||
|
|
||
| // Next moves the iterator to the next key in the database, as defined by order of iteration. | ||
| // If Valid returns false, this method will panic. | ||
| func (iw IteratorWrapper) Next() { | ||
| iw.itr.Next() | ||
| } | ||
|
|
||
| // Key returns the key at the current position. Panics if the iterator is invalid. | ||
| // CONTRACT: key readonly []byte | ||
| func (iw IteratorWrapper) Key() (key []byte) { | ||
| return iw.itr.Key() | ||
| } | ||
|
|
||
| // Value returns the value at the current position. Panics if the iterator is invalid. | ||
| // CONTRACT: value readonly []byte | ||
| func (iw IteratorWrapper) Value() (value []byte) { | ||
| return iw.itr.Value() | ||
| } | ||
|
|
||
| // Error returns the last error encountered by the iterator, if any. | ||
| func (iw IteratorWrapper) Error() error { | ||
| return iw.itr.Error() | ||
| } | ||
|
|
||
| // Close closes the iterator, relasing any allocated resources. | ||
| func (iw IteratorWrapper) Close() error { | ||
| return iw.itr.Close() | ||
| } |
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