1 files changed, 24 insertions, 0 deletions
diff --git a/src/frontend/gateways/rpc/Currency.gateway.ts b/src/frontend/gateways/rpc/Currency.gateway.ts
new file mode 100644
index 0000000..ac25719
--- /dev/null
+++ b/src/frontend/gateways/rpc/Currency.gateway.ts
@@ -0,0 +1,24 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+import { ChannelCredentials } from '@grpc/grpc-js';
+import { GetSupportedCurrenciesResponse, CurrencyServiceClient, Money } from '../../protos/demo';
+
+const { CURRENCY_ADDR = '' } = process.env;
+
+const client = new CurrencyServiceClient(CURRENCY_ADDR, ChannelCredentials.createInsecure());
+
+const CurrencyGateway = () => ({
+  convert(from: Money, toCode: string) {
+    return new Promise<Money>((resolve, reject) =>
+      client.convert({ from, toCode }, (error, response) => (error ? reject(error) : resolve(response)))
+    );
+  },
+  getSupportedCurrencies() {
+    return new Promise<GetSupportedCurrenciesResponse>((resolve, reject) =>
+      client.getSupportedCurrencies({}, (error, response) => (error ? reject(error) : resolve(response)))
+    );
+  },
+});
+
+export default CurrencyGateway();