service backend

api/fx/storage/model/cross.go

@@ -0,0 +1,18 @@
+package model
+
+// CrossRateConfig describes how to synthetically derive a currency pair using
+// two other pairs connected by a pivot currency.
+type CrossRateConfig struct {
+	Enabled       bool         `bson:"enabled" json:"enabled"`
+	PivotCurrency string       `bson:"pivotCurrency,omitempty" json:"pivotCurrency,omitempty"`
+	BaseLeg       CrossRateLeg `bson:"baseLeg" json:"baseLeg"`
+	QuoteLeg      CrossRateLeg `bson:"quoteLeg" json:"quoteLeg"`
+}
+
+// CrossRateLeg identifies a supporting currency pair and optional overrides to
+// fetch or orient its pricing data for cross-rate calculations.
+type CrossRateLeg struct {
+	Pair     CurrencyPair `bson:"pair" json:"pair"`
+	Invert   bool         `bson:"invert,omitempty" json:"invert,omitempty"`
+	Provider string       `bson:"provider,omitempty" json:"provider,omitempty"`
+}