Initial commit

src/currencyservice/client.js

@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+require('@google-cloud/trace-agent').start();
+
+const path = require('path');
+const grpc = require('grpc');
+const pino = require('pino');
+
+const PROTO_PATH = path.join(__dirname, './proto/demo.proto');
+const PORT = 7000;
+
+const shopProto = grpc.load(PROTO_PATH).hipstershop;
+const client = new shopProto.CurrencyService(`localhost:${PORT}`,
+  grpc.credentials.createInsecure());
+
+const logger = pino({
+  name: 'currencyservice-client',
+  messageKey: 'message',
+  formatters: {
+    level (logLevelString, logLevelNum) {
+      return { severity: logLevelString }
+    }
+  }
+});
+
+const request = {
+  from: {
+    currency_code: 'CHF',
+    units: 300,
+    nanos: 0
+  },
+  to_code: 'EUR'
+};
+
+function _moneyToString (m) {
+  return `${m.units}.${m.nanos.toString().padStart(9,'0')} ${m.currency_code}`;
+}
+
+client.getSupportedCurrencies({}, (err, response) => {
+  if (err) {
+    logger.error(`Error in getSupportedCurrencies: ${err}`);
+  } else {
+    logger.info(`Currency codes: ${response.currency_codes}`);
+  }
+});
+
+client.convert(request, (err, response) => {
+  if (err) {
+    logger.error(`Error in convert: ${err}`);
+  } else {
+    logger.log(`Convert: ${_moneyToString(request.from)} to ${_moneyToString(response)}`);
+  }
+});