package txindex import ( "errors" "github.com/tendermint/tendermint/types" "github.com/tendermint/tmlibs/pubsub/query" ) // TxIndexer interface defines methods to index and search transactions. type TxIndexer interface { // AddBatch analyzes, indexes and stores a batch of transactions. AddBatch(b *Batch) error // Index analyzes, indexes and stores a single transaction. Index(result *types.TxResult) error // Get returns the transaction specified by hash or nil if the transaction is not indexed // or stored. Get(hash []byte) (*types.TxResult, error) // Search allows you to query for transactions. Search(q *query.Query) ([]*types.TxResult, error) } //---------------------------------------------------- // Txs are written as a batch // Batch groups together multiple Index operations to be performed at the same time. // NOTE: Batch is NOT thread-safe and must not be modified after starting its execution. type Batch struct { Ops []*types.TxResult } // NewBatch creates a new Batch. func NewBatch(n int) *Batch { return &Batch{ Ops: make([]*types.TxResult, n), } } // Add or update an entry for the given result.Index. func (b *Batch) Add(result *types.TxResult) error { b.Ops[result.Index] = result return nil } // Size returns the total number of operations inside the batch. func (b *Batch) Size() int { return len(b.Ops) } //---------------------------------------------------- // Errors // ErrorEmptyHash indicates empty hash var ErrorEmptyHash = errors.New("Transaction hash cannot be empty")