Merge pull request #103 from unarxiv/discovery

open-source typescript based discovery service

discovery/.gitignore

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+node_modules/
+dist/

discovery/README.md

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+# README

discovery/package.json

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+{
+  "name": "cvtron-discovery-node",
+  "version": "1.0.0",
+  "description": "The CVTron Discovery Service in Node",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "build-server": "tslint --project . && tsc",
+    "watch-server": "nodemon --watch 'src/**/*' -e ts,tsx --exec 'ts-node' ./src/server.ts"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@aws/dynamodb-data-mapper": "^0.7.3",
+    "@aws/dynamodb-data-mapper-annotations": "^0.7.3",
+    "@koa/cors": "^2.2.2",
+    "@types/koa": "^2.0.46",
+    "@types/koa-bodyparser": "^5.0.1",
+    "@types/koa-helmet": "^3.1.2",
+    "@types/koa-router": "^7.0.32",
+    "@types/koa__cors": "^2.2.3",
+    "aws-sdk": "^2.348.0",
+    "koa": "^2.6.1",
+    "koa-bodyparser": "^4.2.1",
+    "koa-helmet": "^4.0.0",
+    "koa-router": "^7.4.0"
+  },
+  "devDependencies": {
+    "@types/node": "^10.12.2",
+    "nodemon": "^1.18.5",
+    "ts-node": "^7.0.1",
+    "tslint": "^5.11.0",
+    "typescript": "^3.1.6"
+  }
+}

discovery/src/controller/index.ts

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+export { default as system } from './system';

discovery/src/controller/system.ts

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+import { BaseContext } from 'koa';
+
+export default class SystemController {
+    public static async getSystemStatus(ctx: BaseContext) {
+        ctx.status = 200;
+        ctx.body = 'ok';
+    }
+}

discovery/src/dynamo/action.ts

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+/**
+ * Following will be object manipulations
+ */

discovery/src/dynamo/dynamo.ts

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+
+/**
+ * Following is the definition for mapper
+ */
+
+import { DataMapper } from '@aws/dynamodb-data-mapper';
+import DynamoDB = require('aws-sdk/clients/dynamodb');
+
+const mapper = new DataMapper({
+    client: new DynamoDB({region: 'us-east-1'})
+})

discovery/src/dynamo/model.ts

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+import {
+    attribute,
+    hashKey,
+    rangeKey,
+    table,
+} from '@aws/dynamodb-data-mapper-annotations';
+
+/**
+ * Following will be object definitions
+ */
+@table('cvpm-package')
+class Package {
+    @hashKey()
+    id: string;
+
+    @rangeKey({defaultProvider: () => new Date()})
+    createdAt: Date;
+
+    @attribute()
+    isSymbol: boolean;
+
+    @attribute()
+    linkedTo: string;
+}

discovery/src/routes.ts

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+import * as Router from 'koa-router';
+
+import controller = require('./controller');
+
+const router = new Router();
+
+router.get('/system/status', controller.system.getSystemStatus);
+
+export { router };

discovery/src/server.ts

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+import * as cors from '@koa/cors';
+import * as Koa from 'koa';
+import * as bodyParser from 'koa-bodyparser';
+import * as helmet from 'koa-helmet';
+
+import { router } from './routes';
+
+const app = new Koa();
+
+app.use(cors());
+app.use(helmet());
+app.use(bodyParser());
+app.use(router.routes()).use(router.allowedMethods());
+
+app.listen(3000);
+console.log('Server is Running on 3000');

discovery/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es2017",
+        "noImplicitAny": true,
+        "outDir": "./dist",
+        "sourceMap": true,
+        "experimentalDecorators": true
+    },
+    "include": [
+        "./src/**/*"
+    ]
+}

discovery/tslint.json

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+{
+    "defaultSeverity": "error",
+    "extends": [
+        "tslint:recommended"
+    ],
+    "jsRules": {},
+    "rules": {
+        "quotemark": [
+            true,
+            "single"
+        ],
+        "no-console": [
+            false
+        ],
+        "one-line": [
+            true,
+            "check-open-brace",
+            "check-whitespace"
+        ],
+        "object-literal-sort-keys": [
+            false
+        ],
+        "no-string-literal": false,
+        "triple-equals": [
+            false
+        ]
+    },
+    "rulesDirectory": []
+}