File size: 2,838 Bytes
56470e2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | // Copyright 2018 Google LLC
//
// 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.
const path = require('path');
const grpc = require('@grpc/grpc-js');
const protoLoader = require('@grpc/proto-loader');
const charge = require('./charge');
const logger = require('./logger')
class HipsterShopServer {
constructor(protoRoot, port = HipsterShopServer.PORT) {
this.port = port;
this.packages = {
hipsterShop: this.loadProto(path.join(protoRoot, 'demo.proto')),
health: this.loadProto(path.join(protoRoot, 'grpc/health/v1/health.proto'))
};
this.server = new grpc.Server();
this.loadAllProtos(protoRoot);
}
/**
* Handler for PaymentService.Charge.
* @param {*} call { ChargeRequest }
* @param {*} callback fn(err, ChargeResponse)
*/
static ChargeServiceHandler(call, callback) {
try {
logger.info(`PaymentService#Charge invoked with request ${JSON.stringify(call.request)}`);
const response = charge(call.request);
callback(null, response);
} catch (err) {
console.warn(err);
callback(err);
}
}
static CheckHandler(call, callback) {
callback(null, { status: 'SERVING' });
}
listen() {
const server = this.server
const port = this.port
server.bindAsync(
`[::]:${port}`,
grpc.ServerCredentials.createInsecure(),
function () {
logger.info(`PaymentService gRPC server started on port ${port}`);
server.start();
}
);
}
loadProto(path) {
const packageDefinition = protoLoader.loadSync(
path,
{
keepCase: true,
longs: String,
enums: String,
defaults: true,
oneofs: true
}
);
return grpc.loadPackageDefinition(packageDefinition);
}
loadAllProtos(protoRoot) {
const hipsterShopPackage = this.packages.hipsterShop.hipstershop;
const healthPackage = this.packages.health.grpc.health.v1;
this.server.addService(
hipsterShopPackage.PaymentService.service,
{
charge: HipsterShopServer.ChargeServiceHandler.bind(this)
}
);
this.server.addService(
healthPackage.Health.service,
{
check: HipsterShopServer.CheckHandler.bind(this)
}
);
}
}
HipsterShopServer.PORT = process.env.PORT;
module.exports = HipsterShopServer;
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