metrics-service spike
This commit is contained in:
Sérgio Ramos
parent
2945190dbb
commit
3c1780342d
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@ -0,0 +1,3 @@
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/node_modules
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/npm-debug.log
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.idea
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@ -0,0 +1,16 @@
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{
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"name": "graphql",
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"version": "1.0.0",
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"scripts": {
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"start": "node src/index.js"
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},
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"main": "src/index.js",
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"private": true,
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"dependencies": {
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"graphql": "^0.7.2",
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"hapi": "^15.2.0",
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"hapi-graphql": "^1.0.1",
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"inert": "^4.0.2",
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"require-dir": "^0.3.1"
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}
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}
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const requireDir = require('require-dir');
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const plugins = require('./plugins');
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const routes = requireDir('./routes');
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const Hapi = require('hapi');
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const path = require('path');
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const fs = require('fs');
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const server = new Hapi.Server();
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server.connection({
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host: 'localhost',
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port: 8000
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});
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server.register(plugins, (err) => {
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if (err) {
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throw err;
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}
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Object.keys(routes).forEach((name) => {
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routes[name](server);
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});
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server.start((err) => {
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server.connections.forEach((conn) => {
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console.log(`started at: ${conn.info.uri}`);
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});
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});
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});
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module.exports = [
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require('inert'), {
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register: require('hapi-graphql'),
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options: {
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query: {
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pretty: true,
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graphiql: true,
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schema: require('./schema')
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},
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route: {
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path: '/graphql'
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}
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}
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}
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];
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const path = require('path');
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module.exports = (server) => {
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server.route({
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method: 'GET',
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path: '/',
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handler: (request, reply) => {
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reply.file(path.join(__dirname, 'index.html'));
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}
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});
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};
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
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<body>
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<div id="root"></div>
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<script>
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const client = fetch('http://localhost:8000/graphql', {
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method: 'POST',
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body: `
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subscription {
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events(container:"1") {
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value,
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when
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}
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}
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`
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});
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client.then((client) => {
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debugger;
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});
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</script>
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</body>
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</html>
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const Pkg = require('../../package.json');
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const internals = {
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response: {
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version: Pkg.version
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}
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};
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module.exports = (server) => {
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server.route({
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method: 'GET',
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path: '/ops/version',
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config: {
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description: 'Returns the version of the server',
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handler: (request, reply) => reply(internals.response)
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}
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});
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};
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const graphql = require('graphql');
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const {
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GraphQLID,
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GraphQLSchema,
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GraphQLObjectType,
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GraphQLString
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} = graphql;
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const EventType = new GraphQLObjectType({
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name: 'EventType',
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fields: {
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value: {
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type: GraphQLString
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},
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when: {
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type: GraphQLString
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}
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}
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});
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const EventSubscription = {
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type: EventType,
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args: {
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container: {
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type: GraphQLID
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}
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},
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start: function() {
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console.log('start', arguments);
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},
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stop: function() {
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console.log('stop', arguments);
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},
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resolve: function() {
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console.log('resolve', arguments);
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}
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};
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const subscription = new GraphQLObjectType({
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name: 'RootSubscriptionType',
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fields: {
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events: EventSubscription
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}
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});
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module.exports = new GraphQLSchema({
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query: new GraphQLObjectType({
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name: 'Q',
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fields: {
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a: { type: GraphQLString },
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}
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}),
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mutation: new GraphQLObjectType({
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name: 'M',
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fields: {
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c: { type: GraphQLString },
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}
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}),
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subscription
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});
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@ -0,0 +1,3 @@
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/node_modules
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/npm-debug.log
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.idea
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@ -0,0 +1,14 @@
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{
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"name": "http1",
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"version": "1.0.0",
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"scripts": {
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"start": "node src/index.js"
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},
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"main": "src/index.js",
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"private": true,
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"dependencies": {
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"hapi": "^15.2.0",
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"inert": "^4.0.2",
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"require-dir": "^0.3.1"
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}
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}
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@ -0,0 +1,29 @@
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const requireDir = require('require-dir');
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const plugins = require('./plugins');
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const routes = requireDir('./routes');
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const Hapi = require('hapi');
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const path = require('path');
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const fs = require('fs');
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const server = new Hapi.Server();
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server.connection({
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host: 'localhost',
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port: 8000
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});
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Object.keys(routes).forEach((name) => {
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routes[name](server);
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});
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server.register(plugins, (err) => {
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if (err) {
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throw err;
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}
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server.start((err) => {
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server.connections.forEach((conn) => {
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console.log(`started at: ${conn.info.uri}`);
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});
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});
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});
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module.exports = [
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require('inert')
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];
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@ -0,0 +1,11 @@
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const path = require('path');
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module.exports = (server) => {
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server.route({
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method: 'GET',
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path: '/',
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handler: (request, reply) => {
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reply.file(path.join(__dirname, 'index.html'));
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}
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});
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};
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<script>
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var source = new EventSource(`${document.location.origin}/stats`);
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source.onmessage = function(e) {
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document.body.innerHTML += "Message: " + e.data + '<br />';
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};
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</script>
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</head>
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<body>
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</body>
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</html>
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let messageId = 0;
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module.exports = (server) => {
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server.route({
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method: 'GET',
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path: '/stats',
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handler: (request, reply) => {
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request.raw.res.setHeader('Content-Type', 'text/event-stream');
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const intervalId = setInterval(() => {
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messageId += 1;
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const str = JSON.stringify({
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msg: messageId
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});
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request.raw.res.write(`data:${str}\n\n`);
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}, 100);
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}
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});
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};
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const Pkg = require('../../package.json');
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const internals = {
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response: {
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version: Pkg.version
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}
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};
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module.exports = (server) => {
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server.route({
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method: 'GET',
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path: '/ops/version',
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config: {
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description: 'Returns the version of the server',
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handler: (request, reply) => reply(internals.response)
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}
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});
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};
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@ -0,0 +1,3 @@
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/node_modules
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/npm-debug.log
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.idea
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@ -0,0 +1,33 @@
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-----BEGIN CERTIFICATE-----
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kbIEE8WnLU0m72Vq5Jzvode8VP3tZpxyvw==
|
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-----END CERTIFICATE-----
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|
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@ -0,0 +1,51 @@
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-----BEGIN RSA PRIVATE KEY-----
|
||||
MIIJKQIBAAKCAgEA6gusYDdyFH9e6iNRT7epiZrGh7R9nwD930d1UM37cZiF5/6o
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|
||||
DxhHHQQ7BRepZDvdVqBK90j4g4LAUUUZWf3znucIPpkCggEAW8ALAaP2RH5pnwOP
|
||||
A+0ZeVjGA+i6X4w3IFp7MMVvQSfBNvNbFjyItb+TLUQn6Tp+Bq1hSlXjy8WsGWHp
|
||||
/pMInEifjVicuZyBQTLrSmkBIDc4Z1SgIrojcFd+2Oz8JfZ7pX5epM6Un4cFAG5a
|
||||
+TlR7z9hYxNegRJLCII1lZ5MVw/meghQxFwcp1G+IrQCsC1Rpr3olKIy64aYnVJQ
|
||||
RIUZd1Kt9MdOGRdqVHSzAVpssEvMgdxJVjFQJuyJNZKJVmXN/B0pOuT5sLwH8npt
|
||||
iiMiKf3v0TmzpmYbKu7Ex3Kz2B26Czq5aFdVICitB8SF/k6XbKfd6jsTlC04NsEi
|
||||
AiAwWQKCAQEAmEanU0a6M4SeZ2u+t5glHaW0b/BTXpD3PWa14ORNstChmdpmlS6q
|
||||
nRB0hYrgeWXdtBk7u/KuTOLYboemaUTOrQ3RG3KZIAlmZHVq73IrisG+ft6L1HbV
|
||||
TA96CO4+hvywb5vDkobyTLjmz2TiBRFVsDffetRaiE8zZs6yJxB9xFRJInWbT0q+
|
||||
1MB2M2BccajNNHi/S21kBGZI5xrEKwamL6SeOjzVgjM238CILQjn9+6dRRBoA8xi
|
||||
mb/CHSOycAwAktObB/Aa1i1lYJugJ5h6Vh3Rdlc+g0gTawSAgxVPRJ41JFyzSH9+
|
||||
MwhQ66CzwUDIAuoc2sggrequhNaZNEV4qQKCAQAM8WpFVOZiTQS1wH4trLIO/SkP
|
||||
gYZW0n1JGHKihf5E3/KWkOwEIewPrff1wCjFJYDncbPbV7UqyOGC1qLv5tHSLBQ/
|
||||
sr3e4pAcqHh1bJWjq7+VN41LwPsoQ8EZdHsoS4Nw0zDln0VTKk532b6yisXCvaye
|
||||
zpoWnfPNS6JfL6M1zw+6vLZCEyBO+d8rVo9lCeO+FOI1N84dTZwmZD3K7QubMKco
|
||||
QShjtmygjEpmw02yRF/85mh1ki6f5rklCeJGqgTj8CDQr6uMczC80n5ISXn87uYW
|
||||
HAkErZpC4ZEqsq+ZexAZSJElATogEsfx7psS4UoYfvf52/X8/Idl+MEmY5h6
|
||||
-----END RSA PRIVATE KEY-----
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
{
|
||||
"name": "http2",
|
||||
"version": "1.0.0",
|
||||
"scripts": {
|
||||
"start": "node src/index.js"
|
||||
},
|
||||
"main": "src/index.js",
|
||||
"private": true,
|
||||
"dependencies": {
|
||||
"bunyan": "^1.8.4",
|
||||
"hapi": "^15.2.0",
|
||||
"http2": "^3.3.6",
|
||||
"inert": "^4.0.2",
|
||||
"require-dir": "^0.3.1",
|
||||
"string-to-stream": "^1.1.0"
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,40 @@
|
|||
const http2 = require('http2');
|
||||
const requireDir = require('require-dir');
|
||||
const plugins = require('./plugins');
|
||||
const routes = requireDir('./routes');
|
||||
const Hapi = require('hapi');
|
||||
const path = require('path');
|
||||
const fs = require('fs');
|
||||
|
||||
const server = new Hapi.Server();
|
||||
|
||||
server.connection({
|
||||
listener: http2.createServer({
|
||||
key: fs.readFileSync(path.join(__dirname, '../key.pem')),
|
||||
cert: fs.readFileSync(path.join(__dirname, '../cert.pem')),
|
||||
log: require('bunyan').createLogger({
|
||||
name: 'server',
|
||||
stream: process.stdout,
|
||||
serializers: require('http2/lib/http').serializers
|
||||
})
|
||||
}),
|
||||
host: 'localhost',
|
||||
port: 8000,
|
||||
tls: true
|
||||
});
|
||||
|
||||
Object.keys(routes).forEach((name) => {
|
||||
routes[name](server);
|
||||
});
|
||||
|
||||
server.register(plugins, (err) => {
|
||||
if (err) {
|
||||
throw err;
|
||||
}
|
||||
|
||||
server.start((err) => {
|
||||
server.connections.forEach((conn) => {
|
||||
console.log(`started at: ${conn.info.uri}`);
|
||||
});
|
||||
});
|
||||
});
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
module.exports = [
|
||||
require('inert')
|
||||
];
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
const path = require('path');
|
||||
|
||||
module.exports = (server) => {
|
||||
server.route({
|
||||
method: 'GET',
|
||||
path: '/',
|
||||
handler: (request, reply) => {
|
||||
reply.file(path.join(__dirname, 'index.html'));
|
||||
}
|
||||
});
|
||||
};
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||
<script>
|
||||
var source = new EventSource(`${document.location.origin}/stats`);
|
||||
|
||||
source.onmessage = function(e) {
|
||||
document.body.innerHTML += "SSE notification: " + e.data + '<br />';
|
||||
|
||||
// fetch resource via XHR... from cache!
|
||||
var xhr = new XMLHttpRequest();
|
||||
xhr.open('GET', e.data);
|
||||
xhr.onload = function() {
|
||||
document.body.innerHTML += "Message: " + this.response + '<br />';
|
||||
};
|
||||
|
||||
xhr.send();
|
||||
};
|
||||
</script>
|
||||
</head>
|
||||
<body>
|
||||
</body>
|
||||
</html>
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
const str = require('string-to-stream');
|
||||
|
||||
let messageId = 0;
|
||||
|
||||
module.exports = (server) => {
|
||||
server.route({
|
||||
method: 'GET',
|
||||
path: '/stats',
|
||||
handler: (request, reply) => {
|
||||
request.raw.res.setHeader('Content-Type', 'text/event-stream');
|
||||
|
||||
const intervalId = setInterval(() => {
|
||||
const resourcePath = `/resource/${messageId}`;
|
||||
|
||||
if (!request.raw.res.push) {
|
||||
clearInterval(intervalId);
|
||||
return;
|
||||
}
|
||||
|
||||
const stream = request.raw.res.push(resourcePath, {
|
||||
status: 200,
|
||||
method: 'GET',
|
||||
headers: {
|
||||
'Content-Type': 'application/json'
|
||||
}
|
||||
});
|
||||
|
||||
str(JSON.stringify({
|
||||
msg: messageId
|
||||
})).pipe(stream);
|
||||
|
||||
request.raw.res.write(`data:${resourcePath}\n\n`);
|
||||
|
||||
messageId += 1;
|
||||
}, 100);
|
||||
}
|
||||
});
|
||||
};
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
const Pkg = require('../../package.json');
|
||||
|
||||
const internals = {
|
||||
response: {
|
||||
version: Pkg.version
|
||||
}
|
||||
};
|
||||
|
||||
module.exports = (server) => {
|
||||
server.route({
|
||||
method: 'GET',
|
||||
path: '/ops/version',
|
||||
config: {
|
||||
description: 'Returns the version of the server',
|
||||
handler: (request, reply) => reply(internals.response)
|
||||
}
|
||||
});
|
||||
};
|
||||
|
|
@ -0,0 +1,30 @@
|
|||
# metrics-service
|
||||
|
||||
> A service which produces random streams of data (firehose) of interpretable metric information for various subsystems that can or will be pulled out from a container. These are currently defined in [RFD-0037](https://github.com/joyent/rfd/blob/master/rfd/0037/README.md#default-metric-keys).
|
||||
|
||||
This spike's purpose was to find the best pattern to expose such metrics service with mock data.
|
||||
|
||||
## http1
|
||||
|
||||
+ very simple API to push data from the server to the client
|
||||
+ plain HTTP
|
||||
- requires a connection to each container - because it's not bidirectional, we can't subscribe to more containers on-demand
|
||||
|
||||
## http2
|
||||
|
||||
+ very simple API to push data from the server to the client
|
||||
+ multiplexing
|
||||
- push doesn't really help us, because it's only useful for static resources
|
||||
|
||||
## graphql
|
||||
|
||||
+ common interface between all data resources
|
||||
+ filter received data
|
||||
- api not finalised yet
|
||||
- api not documented
|
||||
|
||||
## ws (with [nes](https://github.com/hapijs/nes))
|
||||
|
||||
+ strong integration with [Hapi](https://github.com/hapijs/hapi)
|
||||
+ allow to subscribe and unsubscribe on-demand on a single connection
|
||||
- some networks might require fallback to pooling
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
/node_modules
|
||||
/npm-debug.log
|
||||
.idea
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
{
|
||||
"name": "ws",
|
||||
"version": "1.0.0",
|
||||
"scripts": {
|
||||
"start": "node src/index.js"
|
||||
},
|
||||
"main": "src/index.js",
|
||||
"private": true,
|
||||
"dependencies": {
|
||||
"component-emitter": "^1.2.1",
|
||||
"hapi": "^15.2.0",
|
||||
"inert": "^4.0.2",
|
||||
"nes": "^6.3.1",
|
||||
"require-dir": "^0.3.1"
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
const requireDir = require('require-dir');
|
||||
const plugins = require('./plugins');
|
||||
const routes = requireDir('./routes');
|
||||
const Hapi = require('hapi');
|
||||
const path = require('path');
|
||||
const fs = require('fs');
|
||||
|
||||
const server = new Hapi.Server();
|
||||
|
||||
server.connection({
|
||||
host: 'localhost',
|
||||
port: 8000
|
||||
});
|
||||
|
||||
server.register(plugins, (err) => {
|
||||
if (err) {
|
||||
throw err;
|
||||
}
|
||||
|
||||
Object.keys(routes).forEach((name) => {
|
||||
routes[name](server);
|
||||
});
|
||||
|
||||
server.start((err) => {
|
||||
server.connections.forEach((conn) => {
|
||||
console.log(`started at: ${conn.info.uri}`);
|
||||
});
|
||||
});
|
||||
});
|
||||
|
|
@ -0,0 +1,30 @@
|
|||
const Emitter = require('component-emitter');
|
||||
|
||||
const cdm = {};
|
||||
|
||||
module.exports = (server) => ({
|
||||
on: (id) => {
|
||||
if (cdm[id]) {
|
||||
cdm[id].sockets +=1;
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
let messageId = 0;
|
||||
const interval = setInterval(() => {
|
||||
server.publish(`/stats/${id}`, {
|
||||
id: messageId += 1
|
||||
});
|
||||
}, 500);
|
||||
|
||||
cdm[id] = {
|
||||
interval,
|
||||
sockets: 1
|
||||
};
|
||||
},
|
||||
off: (id) => {
|
||||
if (!(cdm[id].sockets -= 1)) {
|
||||
clearInterval(cdm[id].interval);
|
||||
}
|
||||
}
|
||||
});
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
module.exports = [
|
||||
require('inert'),
|
||||
require('nes')
|
||||
];
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
const path = require('path');
|
||||
|
||||
module.exports = (server) => {
|
||||
server.route({
|
||||
method: 'GET',
|
||||
path: '/',
|
||||
handler: (request, reply) => {
|
||||
reply.file(path.join(__dirname, 'index.html'));
|
||||
}
|
||||
});
|
||||
};
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||
<script src="https://unpkg.com/nes@6.3.1"></script>
|
||||
</head>
|
||||
<body>
|
||||
<div id="root"></div>
|
||||
<script>
|
||||
const client = new window.nes.Client('ws://localhost:8000');
|
||||
|
||||
client.connect((err) => {
|
||||
if (err) {
|
||||
throw err;
|
||||
}
|
||||
|
||||
console.log('connected');
|
||||
|
||||
client.subscribe('/stats/5', (update, flag) => {
|
||||
console.log(update, flag);
|
||||
}, (err) => {
|
||||
if (err) {
|
||||
throw err;
|
||||
}
|
||||
|
||||
console.log('subscribed');
|
||||
});
|
||||
});
|
||||
</script>
|
||||
|
||||
</body>
|
||||
</html>
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
const Metric = require('../metric');
|
||||
|
||||
module.exports = (server) => {
|
||||
const metric = Metric(server);
|
||||
|
||||
server.subscription('/stats/{id}', {
|
||||
onSubscribe: (socket, path, params, next) => {
|
||||
console.log('onSubscribe');
|
||||
metric.on(params.id);
|
||||
next();
|
||||
},
|
||||
onUnsubscribe: (socket, path, params, next) => {
|
||||
console.log('onUnsubscribe');
|
||||
metric.off(params.id);
|
||||
next();
|
||||
}
|
||||
});
|
||||
};
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
const Pkg = require('../../package.json');
|
||||
|
||||
const internals = {
|
||||
response: {
|
||||
version: Pkg.version
|
||||
}
|
||||
};
|
||||
|
||||
module.exports = (server) => {
|
||||
server.route({
|
||||
method: 'GET',
|
||||
path: '/ops/version',
|
||||
config: {
|
||||
description: 'Returns the version of the server',
|
||||
handler: (request, reply) => reply(internals.response)
|
||||
}
|
||||
});
|
||||
};
|
||||
Loading…
Reference in New Issue