relayer: update client bindings (#346)

Author: pkieltyka

lib/mock/relayer.mock.go

@@ -0,0 +1,68 @@
+package proto
+
+import (
+	"bytes"
+	"database/sql/driver"
+	"encoding/json"
+	"fmt"
+)
+
+// TxnArgs preserves JSON number precision when decoding from the database.
+type TxnArgs map[string]interface{}
+
+func (t TxnArgs) MarshalJSON() ([]byte, error) {
+	if t == nil {
+		return []byte("null"), nil
+	}
+	return json.Marshal(map[string]interface{}(t))
+}
+
+func (t *TxnArgs) UnmarshalJSON(data []byte) error {
+	if len(data) == 0 || string(data) == "null" {
+		*t = nil
+		return nil
+	}
+
+	dec := json.NewDecoder(bytes.NewReader(data))
+	dec.UseNumber()
+
+	var out map[string]interface{}
+	if err := dec.Decode(&out); err != nil {
+		return err
+	}
+	*t = TxnArgs(out)
+	return nil
+}
+
+func (t TxnArgs) Value() (driver.Value, error) {
+	if t == nil {
+		return nil, nil
+	}
+
+	payload, err := json.Marshal(map[string]interface{}(t))
+	if err != nil {
+		return nil, err
+	}
+	return payload, nil
+}
+
+func (t *TxnArgs) Scan(src interface{}) error {
+	if src == nil {
+		*t = nil
+		return nil
+	}
+
+	switch value := src.(type) {
+	case []byte:
+		return t.UnmarshalJSON(value)
+	case string:
+		return t.UnmarshalJSON([]byte(value))
+	case json.RawMessage:
+		return t.UnmarshalJSON(value)
+	case map[string]interface{}:
+		*t = TxnArgs(value)
+		return nil
+	default:
+		return fmt.Errorf("TxnArgs.Scan: unsupported type %T", src)
+	}
+}