├── .gitignore
├── README.md
├── client
    └── client.js
├── package.json
├── protos
    └── greet.proto
└── server
    └── index.js


/.gitignore:
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 1 | # Logs
 2 | logs
 3 | *.log
 4 | npm-debug.log*
 5 | yarn-debug.log*
 6 | yarn-error.log*
 7 | 
 8 | # Runtime data
 9 | pids
10 | *.pid
11 | *.seed
12 | *.pid.lock
13 | 
14 | # Directory for instrumented libs generated by jscoverage/JSCover
15 | lib-cov
16 | 
17 | # Coverage directory used by tools like istanbul
18 | coverage
19 | 
20 | # nyc test coverage
21 | .nyc_output
22 | 
23 | # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
24 | .grunt
25 | 
26 | # Bower dependency directory (https://bower.io/)
27 | bower_components
28 | 
29 | # node-waf configuration
30 | .lock-wscript
31 | 
32 | # Compiled binary addons (https://nodejs.org/api/addons.html)
33 | build/Release
34 | 
35 | # Dependency directories
36 | node_modules/
37 | jspm_packages/
38 | 
39 | # TypeScript v1 declaration files
40 | typings/
41 | 
42 | # Optional npm cache directory
43 | .npm
44 | 
45 | # Optional eslint cache
46 | .eslintcache
47 | 
48 | # Optional REPL history
49 | .node_repl_history
50 | 
51 | # Output of 'npm pack'
52 | *.tgz
53 | 
54 | # Yarn Integrity file
55 | .yarn-integrity
56 | 
57 | # dotenv environment variables file
58 | .env
59 | 
60 | # next.js build output
61 | .next
62 | 


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/README.md:
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 1 | # grpc-node-course-dynamic-codegen
 2 | Dynamic Codegen with gRPC Nodejs - 
 3 | 
 4 | Install the following modules:
 5 | 
 6 | `npm install grpc`
 7 | 
 8 | `npm install @grpc/proto-loader`
 9 | 
10 | 
11 | 


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/client/client.js:
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 1 | const path = require('path')
 2 | const protoLoader = require('@grpc/proto-loader') //require('@grpc/proto-loader')
 3 | const grpc = require('grpc')
 4 | 
 5 | 
 6 | //grpc service definition for greet
 7 | 
 8 | const greetProtoPath = path.join(__dirname, "..", "protos", "greet.proto")
 9 | const greetProtoDefinition = protoLoader.loadSync(greetProtoPath, {
10 |      keepCase: true,
11 |       longs: String,
12 |       enums: String,
13 |       defaults: true,
14 |       oneofs: true
15 | });
16 | 
17 | const greetPackageDefinition = grpc.loadPackageDefinition(greetProtoDefinition).greet
18 | 
19 | const client = new greetPackageDefinition.GreetService("localhost:50051",
20 |         grpc.credentials.createInsecure()
21 | )
22 | 
23 | function callGreetings() {
24 |     var request = {
25 |          greeting: {
26 |               first_name: "Jerry",
27 |               last_name: "Tom"
28 |          }
29 |     }
30 |      
31 | 
32 |     client.greet(request, (error, response) => {
33 |           if(!error) {
34 |               console.log("Greeting Response: ", response.result);
35 |               
36 | 
37 |           }else {
38 |               console.error(error)
39 |               
40 |                
41 |           }
42 |     })
43 | }
44 | 
45 | 
46 | function main() {
47 |     callGreetings()
48 | 
49 | }
50 | main()


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/package.json:
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 1 | {
 2 |   "name": "grpc-dynamic",
 3 |   "version": "1.0.0",
 4 |   "description": "",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "test": "echo \"Error: no test specified\" && exit 1"
 8 |   },
 9 |   "author": "pdichone",
10 |   "license": "ISC",
11 |   "dependencies": {
12 |     "@grpc/proto-loader": "^0.5.3",
13 |     "grpc": "^1.24.2",
14 |     "proto-loader": "^0.2.0"
15 |   }
16 | }
17 | 


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/protos/greet.proto:
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 1 | syntax = "proto3";
 2 | 
 3 | package greet;
 4 | 
 5 | service GreetService {
 6 | 
 7 |     //Unary API
 8 |     rpc Greet (GreetRequest) returns (GreetResponse) {};
 9 | }
10 | 
11 | message Greeting {
12 |     string first_name = 1;
13 |     string last_name = 2;
14 | }
15 | 
16 | message GreetRequest {
17 |      Greeting greeting = 1;
18 | }
19 | 
20 | message GreetResponse {
21 |      string result = 1;
22 | }
23 | 
24 | 
25 | 


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/server/index.js:
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 1 | const path = require('path')
 2 | const protoLoader = require('@grpc/proto-loader') //require('@grpc/proto-loader')
 3 | const grpc = require('grpc')
 4 | 
 5 | 
 6 | //grpc service definition for greet
 7 | 
 8 | const greetProtoPath = path.join(__dirname, "..", "protos", "greet.proto")
 9 | const greetProtoDefinition = protoLoader.loadSync(greetProtoPath, {
10 |      keepCase: true,
11 |       longs: String,
12 |       enums: String,
13 |       defaults: true,
14 |       oneofs: true
15 | });
16 | 
17 | const greetPackageDefinition = grpc.loadPackageDefinition(greetProtoDefinition).greet
18 | 
19 | function greet(call, callback) {
20 |     var firstName = call.request.greeting.first_name;
21 |     var lastName = call.request.greeting.last_name;
22 | 
23 |     callback(null, {result: "Hello " + firstName + " " + lastName})
24 | 
25 | }
26 | 
27 | function main() {
28 |     const server = new grpc.Server()
29 | 
30 |     server.addService(greetPackageDefinition.GreetService.service, {
31 |          greet: greet
32 |     })
33 | 
34 |     server.bind("127.0.0.1:50051", grpc.ServerCredentials.createInsecure())
35 |     server.start()
36 |     console.log("Server Runnig at http://127.0.0.1:50051")
37 |     
38 |     
39 | 
40 | }
41 | main()


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