initial commit

electrum/misc.go

@@ -0,0 +1,64 @@
+package electrum
+
+import "context"
+
+type basicResp struct {
+	Result string `json:"result"`
+}
+
+// GetFeeResp represents the response to GetFee().
+type GetFeeResp struct {
+	Result float32 `json:"result"`
+}
+
+// GetFee returns the estimated transaction fee per kilobytes for a transaction
+// to be confirmed within a target number of blocks.
+// https://electrumx.readthedocs.io/en/latest/protocol-methods.html#blockchain-estimatefee
+func (s *Client) GetFee(ctx context.Context, target uint32) (float32, error) {
+	var resp GetFeeResp
+
+	err := s.request(ctx, "blockchain.estimatefee", []interface{}{target}, &resp)
+	if err != nil {
+		return -1, err
+	}
+
+	return resp.Result, err
+}
+
+// GetRelayFee returns the minimum fee a transaction must pay to be accepted into the
+// remote server memory pool.
+// https://electrumx.readthedocs.io/en/latest/protocol-methods.html#blockchain-relayfee
+func (s *Client) GetRelayFee(ctx context.Context) (float32, error) {
+	var resp GetFeeResp
+
+	err := s.request(ctx, "blockchain.relayfee", []interface{}{}, &resp)
+	if err != nil {
+		return -1, err
+	}
+
+	return resp.Result, err
+}
+
+// GetFeeHistogramResp represents the response to GetFee().
+type getFeeHistogramResp struct {
+	Result [][2]uint64 `json:"result"`
+}
+
+// GetFeeHistogram returns a histogram of the fee rates paid by transactions in the
+// memory pool, weighted by transacation size.
+// https://electrumx.readthedocs.io/en/latest/protocol-methods.html#mempool-get-fee-histogram
+func (s *Client) GetFeeHistogram(ctx context.Context) (map[uint32]uint64, error) {
+	var resp getFeeHistogramResp
+
+	err := s.request(ctx, "mempool.get_fee_histogram", []interface{}{}, &resp)
+	if err != nil {
+		return nil, err
+	}
+
+	feeMap := make(map[uint32]uint64)
+	for i := 0; i < len(resp.Result); i++ {
+		feeMap[uint32(resp.Result[i][0])] = resp.Result[i][1]
+	}
+
+	return feeMap, err
+}