Added health monitor

auth-server/package.json

@@ -21,7 +21,7 @@
     "Nikhil Rajan",
     "Thibaut Sardan"
   ],
-  "license": "MIT",
+  "license": "Apache-2.0",
   "bugs": {
     "url": "https://github.com/paritytech/polkassembly/issues"
   },

chain-db-watcher/README.md

@@ -16,6 +16,7 @@ COUNCIL_TOPIC_ID=2
 TREASURY_TOPIC_ID=4
 HASURA_GRAPHQL_ADMIN_SECRET=<your admin secret>
 START_FROM=0
+HEALTH_PORT=8019
 ```
 ## Run
 - `yarn`

chain-db-watcher/package.json

@@ -16,7 +16,7 @@
     "Nikhil Rajan",
     "Thibaut Sardan"
   ],
-  "license": "MIT",
+  "license": "Apache-2.0",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
     "start": "yarn tsc && ts-node ./src/index.ts",

chain-db-watcher/src/index.ts

@@ -6,6 +6,7 @@ import { execute } from 'apollo-link';
 import { WebSocketLink } from 'apollo-link-ws';
 import chalk from 'chalk';
 import dotenv from 'dotenv';
+import http from 'http';
 import { SubscriptionClient } from 'subscriptions-transport-ws';
 import ws from 'ws';
 
@@ -208,6 +209,19 @@ async function main (): Promise<void> {
 			process.exit(1);
 		}
 	});
+
+	const hostname = '127.0.0.1';
+	const port = Number(process.env.HEALTH_PORT) || 8019;
+
+	const server = http.createServer((req, res) => {
+		res.statusCode = 200;
+		res.setHeader('Content-Type', 'text/plain');
+		res.end('ok');
+	});
+
+	server.listen(port, hostname, () => {
+		console.log(`[+] Health endpoint available at http://${hostname}:${port}/`);
+	});
 }
 
 main().catch(error => console.error(chalk.red(error)));

front-end/package.json

@@ -1,7 +1,7 @@
 {
   "name": "governance-platform",
   "version": "0.1.0",
-  "license": "GPL-3.0",
+  "license": "Apache-2.0",
   "private": true,
   "homepage": "http://polkassembly.io/",
   "repository": {

health-monitor/.dockerignore

@@ -0,0 +1,3 @@
+node_modules
+build
+.env

health-monitor/.editorconfig

@@ -0,0 +1,11 @@
+# http://editorconfig.org/
+
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+indent_style = tab
+indent_size = 4

health-monitor/.eslintignore

@@ -0,0 +1 @@
+build

health-monitor/.eslintrc.json

@@ -0,0 +1,49 @@
+{
+    "env": {
+        "es6": true,
+        "node": true
+    },
+    "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/eslint-recommended",
+        "plugin:@typescript-eslint/recommended",
+        "plugin:@typescript-eslint/recommended-requiring-type-checking",
+        "plugin:import/typescript",
+        "semistandard"
+    ],
+    "globals": {
+        "Atomics": "readonly",
+        "SharedArrayBuffer": "readonly"
+    },
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "project": ["./tsconfig.json"]
+    },
+    "plugins": [
+        "@typescript-eslint",
+        "header",
+        "security",
+        "promise",
+        "simple-import-sort"
+    ],
+    "rules": {
+        "@typescript-eslint/camelcase": "off",
+        "@typescript-eslint/no-unused-vars": "error",
+        "arrow-spacing":["warn",{ "before": true, "after": true }],
+        "camelcase": "off",
+        "comma-dangle": ["error", "never"],
+        "header/header": [2, "../header.js"],
+        "indent": ["error", "tab"],
+        "no-extra-parens": ["error", "all", { "returnAssign": false }],
+        "no-multiple-empty-lines": ["error", {"max": 1}],
+        "no-tabs": ["error", { "allowIndentationTabs": true }],
+        "no-trailing-spaces": ["warn"],
+        "no-unused-vars": "off",
+        "object-curly-spacing": ["error", "always"],
+        "quotes": ["error", "single",  { "avoidEscape": true }],
+        "semi": [2, "always"],
+        "simple-import-sort/sort": "error",
+        "sort-keys": ["error", "asc", {"caseSensitive": true, "natural": false, "minKeys": 2}],
+        "switch-colon-spacing": ["error", {"after": true, "before": false}]
+    }
+}

health-monitor/.gitignore

@@ -0,0 +1,7 @@
+node_modules
+.env
+data
+build
+*.sh
+*.log
+docker-compose.yaml

health-monitor/Dockerfile

@@ -0,0 +1,18 @@
+FROM node:12
+
+RUN mkdir -p /opt/app
+
+RUN chown node:node /opt/app
+
+WORKDIR /opt/app
+
+COPY --chown=node:node package.json .
+COPY --chown=node:node yarn.lock .
+
+USER node
+
+RUN yarn
+
+COPY --chown=node:node . .
+
+CMD yarn start:prod

health-monitor/README.md

@@ -0,0 +1,19 @@
+## health-monitor
+
+Health monitor service for Polkassembly. Provides a single API endpoint which checks the health of all Polkassembly components.
+
+## Installation
+
+Configure environment variables with a .env file with following values.
+
+```bash
+PORT=8034
+AUTH_SERVER="http://localhost:8010"
+HASURA_SERVER="http://localhost:8080"
+CHAIN_DB_WATCHER_SERVER="http://localhost:8019"
+CHAIN_DB_SERVER="http://0.0.0.0:4000"
+CHAIN_DB="http://0.0.0.0:4466"
+REACT_SERVER="http://localhost:3000"
+ARCHIVE_NODE_ENDPOINT="wss://kusama-rpc.polkadot.io"
+```
+

health-monitor/package.json

@@ -0,0 +1,40 @@
+{
+  "name": "health-monitor",
+  "version": "0.0.1",
+  "description": "Healthcheck Monitoring for polkassembly",
+  "main": "index.js",
+  "scripts": {
+    "start": "ts-node src/index.ts",
+    "tsc": "tsc",
+    "start:prod": "tsc && node build/index.js",
+    "lint": "npx eslint ./src/ --ext .js,.ts",
+    "lint:fix": "npx eslint ./src/ --ext .js,.ts --fix"
+  },
+  "dependencies": {
+    "@polkadot/api": "^1.13.1",
+    "dotenv": "^8.2.0",
+    "express": "^4.16.4",
+    "node-fetch": "^2.6.0",
+    "typescript": "^3.8.3"
+  },
+  "devDependencies": {
+    "@types/dotenv": "^8.2.0",
+    "@types/express": "^4.17.2",
+    "@types/node": "^12.12.11",
+    "@types/node-fetch": "^2.5.5",
+    "@typescript-eslint/eslint-plugin": "^2.29.0",
+    "@typescript-eslint/parser": "^2.29.0",
+    "eslint": "^6.8.0",
+    "eslint-config-semistandard": "^15.0.0",
+    "eslint-config-standard": "^14.1.0",
+    "eslint-plugin-header": "^3.0.0",
+    "eslint-plugin-import": "^2.20.2",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-promise": "^4.2.1",
+    "eslint-plugin-security": "^1.4.0",
+    "eslint-plugin-simple-import-sort": "^5.0.2",
+    "eslint-plugin-standard": "^4.0.1",
+    "ts-node": "^8.5.4"
+  },
+  "license": "Apache-2.0"
+}