add no-leak example to get normal data

spikes/no-leak/.babelrc

@@ -0,0 +1,15 @@
+{
+  "presets": [
+    "react",
+    "es2015"
+  ],
+  "plugins": [
+    ["transform-object-rest-spread", {
+      "useBuiltIns": true
+    }],
+    "add-module-exports",
+    "transform-es2015-modules-commonjs",
+    "react-hot-loader/babel"
+  ],
+  "sourceMaps": "both"
+}

spikes/no-leak/.dockerignore

@@ -0,0 +1,4 @@
+/node_modules
+coverage
+.nyc_output
+npm-debug.log

spikes/no-leak/.eslintignore

@@ -0,0 +1,3 @@
+/node_modules
+coverage
+.nyc_output

spikes/no-leak/.eslintrc

@@ -0,0 +1,29 @@
+{
+  "extends": "semistandard",
+  "parser": "babel-eslint",
+  "parserOptions": {
+    "ecmaVersion": 7,
+    "ecmaFeatures": {
+      "jsx": true
+    },
+    "sourceType": "module"
+  },
+  "plugins": [
+    "babel",
+    "react"
+  ],
+  "rules": {
+    "generator-star-spacing": 0,
+    "babel/generator-star-spacing": 1,
+    "space-before-function-paren": [2, "never"],
+    "react/jsx-uses-react": 2,
+    "react/jsx-uses-vars": 2,
+    "react/react-in-jsx-scope": 2,
+    "object-curly-newline": ["error", {
+      "minProperties": 1
+    }],
+    "sort-vars": ["error", {
+      "ignoreCase": true
+    }]
+  }
+}

spikes/no-leak/.gitignore

@@ -0,0 +1,4 @@
+/node_modules
+coverage
+.nyc_output
+npm-debug.log

spikes/no-leak/Dockerfile

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+FROM mhart/alpine-node:7
+
+RUN npm install -g yarn
+
+WORKDIR /src
+COPY package.json package.json
+COPY yarn.lock yarn.lock
+
+RUN yarn install --production --pure-lockfile --prefer-offline
+
+COPY . .
+
+EXPOSE 8000
+CMD ["node", "scripts/start.js"]

spikes/no-leak/artillery/artillery-no-leak-1.yml

@@ -0,0 +1,9 @@
+config:
+  target: "http://no-leak-node-1:8000"
+  phases:
+    - duration: 172800
+      arrivalRate: 10
+scenarios:
+  - flow:
+      - get:
+          url: "/ops/version"

spikes/no-leak/artillery/artillery-no-leak-2.yml

@@ -0,0 +1,9 @@
+config:
+  target: "http://no-leak-node-2:8000"
+  phases:
+    - duration: 172800
+      arrivalRate: 10
+scenarios:
+  - flow:
+      - get:
+          url: "/ops/version"

spikes/no-leak/artillery/artillery-no-leak-3.yml

@@ -0,0 +1,9 @@
+config:
+  target: "http://no-leak-node-3:8000"
+  phases:
+    - duration: 172800
+      arrivalRate: 10
+scenarios:
+  - flow:
+      - get:
+          url: "/ops/version"

spikes/no-leak/docker-compose.yml

@@ -0,0 +1,49 @@
+no-leak-node-1:
+  build: .
+  environment:
+    - TYPE=node
+  ports:
+   - "8000"
+no-leak-artillery-1:
+  build: .
+  environment:
+    - TYPE=artillery
+    - MODE=no-leak-1
+  links:
+    - no-leak-node-1:no-leak-node-1
+no-leak-node-2:
+  build: .
+  environment:
+    - TYPE=node
+  ports:
+   - "8000"
+no-leak-artillery-2:
+  build: .
+  environment:
+    - TYPE=artillery
+    - MODE=no-leak-2
+  links:
+    - no-leak-node-2:no-leak-node-2
+no-leak-node-3:
+  build: .
+  environment:
+    - TYPE=node
+  ports:
+   - "8000"
+no-leak-artillery-3:
+  build: .
+  environment:
+    - TYPE=artillery
+    - MODE=no-leak-3
+  links:
+    - no-leak-node-3:no-leak-node-3
+telemetry:
+  build: ./prometheus
+  ports:
+   - "9090"
+  environment:
+    - TYPE=telemetry
+  links:
+    - no-leak-node-3:no-leak-node-3
+    - no-leak-node-2:no-leak-node-2
+    - no-leak-node-1:no-leak-node-1

spikes/no-leak/package.json

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+{
+  "name": "leak-spike",
+  "version": "1.0.0",
+  "private": true,
+  "license": "private",
+  "main": "src/server/index.js",
+  "dependencies": {
+    "apr-map": "^1.0.3",
+    "artillery": "^1.5.2",
+    "async": "^2.1.5",
+    "build-array": "^1.0.0",
+    "chart.js": "^2.5.0",
+    "date.js": "^0.3.1",
+    "dockerode": "^2.4.1",
+    "epimetheus": "^1.0.46",
+    "force-array": "^3.1.0",
+    "good": "^7.1.0",
+    "good-console": "^6.4.0",
+    "good-squeeze": "^5.0.1",
+    "got": "^6.7.1",
+    "hapi": "^16.1.0",
+    "hapi-webpack-dev-plugin": "1.2.0",
+    "inert": "^4.1.0",
+    "internet-timestamp": "^0.0.1",
+    "lodash.first": "^3.0.0",
+    "lodash.get": "^4.4.2",
+    "lodash.take": "^4.1.1",
+    "minimist": "^1.2.0",
+    "nes": "^6.4.0",
+    "pretty-hrtime": "^1.0.3",
+    "prom-client": "^6.3.0",
+    "qs": "^6.4.0",
+    "react": "^15.4.2",
+    "react-dom": "^15.4.2",
+    "react-hot-loader": "^3.0.0-beta.6",
+    "react-redux": "^5.0.3",
+    "redux": "^3.6.0",
+    "redux-logger": "^2.8.2",
+    "redux-promise-middleware": "^4.2.0",
+    "redux-thunk": "^2.2.0",
+    "relative-date": "^1.1.3",
+    "require-dir": "^0.3.1",
+    "simple-statistics": "^2.5.0"
+  },
+  "devDependencies": {
+    "apr-awaitify": "^1.0.2",
+    "apr-filter": "^1.0.3",
+    "apr-find": "^1.0.3",
+    "apr-for-each": "^1.0.4",
+    "apr-intercept": "^1.0.2",
+    "apr-map": "^1.0.3",
+    "apr-parallel": "^1.0.3",
+    "apr-some": "^1.0.3",
+    "apr-until": "^1.0.3",
+    "async": "^2.1.5",
+    "axios": "^0.15.3",
+    "babel-core": "^6.23.1",
+    "babel-eslint": "^7.1.1",
+    "babel-loader": "^6.4.0",
+    "babel-plugin-add-module-exports": "^0.2.1",
+    "babel-plugin-transform-es2015-modules-commonjs": "^6.23.0",
+    "babel-plugin-transform-object-rest-spread": "^6.23.0",
+    "babel-preset-es2015": "^6.22.0",
+    "babel-preset-react": "^6.23.0",
+    "delay": "^1.3.1",
+    "diskusage": "^0.2.1",
+    "dockerode": "^2.4.1",
+    "eslint": "^3.17.0",
+    "eslint-config-semistandard": "^7.0.0",
+    "eslint-config-standard": "^7.0.0",
+    "eslint-plugin-babel": "^4.1.0",
+    "eslint-plugin-promise": "^3.5.0",
+    "eslint-plugin-react": "^6.10.0",
+    "eslint-plugin-standard": "^2.1.1",
+    "got": "^6.7.1",
+    "js-yaml": "^3.8.2",
+    "json-loader": "^0.5.4",
+    "lodash.flatten": "^4.4.0",
+    "lodash.uniq": "^4.5.0",
+    "minimist": "^1.2.0",
+    "moment": "^2.18.0",
+    "os-utils": "^0.0.14",
+    "simple-statistics": "^2.5.0",
+    "triton": "^5.1.0",
+    "webpack": "^2.2.1",
+    "webpack-dev-server": "^2.4.1"
+  }
+}

spikes/no-leak/prometheus/Dockerfile

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+FROM prom/prometheus:v1.5.2
+ADD prometheus.yml /etc/prometheus/

spikes/no-leak/prometheus/prometheus.yml

@@ -0,0 +1,5 @@
+scrape_configs:
+  - job_name: 'leak'
+    scrape_interval: 15s
+    static_configs:
+      - targets: ['no-leak-node-1:8000', 'no-leak-node-2:8000', 'no-leak-node-3:8000']

spikes/no-leak/readme.md

@@ -0,0 +1,25 @@
+# leak
+
+ - 1. Spawn a bunch of servers:
+    - another-fast: a node with a linear memory leak
+    - fast: a node with a linear memory leak
+    - slow: a node with a memory leak that grows very slowly
+    - plain: a node with no memory leak 
+ - 2. Spawn an [artillery](https://artillery.io) for each node that loads it with a small but constant stream of requests
+ - 3. Spawn Prometheus that watches the cpu/memory of each node
+
+Then, locally we start the same server and we can see the different instances and an aggregate of the metrics for each job.
+
+## usage
+
+```
+λ docker-compose up
+λ node .
+```
+
+Go to http://127.0.0.1:8000/ and see the result.
+The [Prometheus](https://prometheus.io) is also listening at http://127.0.0.1:9090/
+
+## example
+
+![](https://cldup.com/yxS380e1HN.png)

spikes/no-leak/scripts/prometheus.js

@@ -0,0 +1,156 @@
+const map = require('apr-map');
+const forceArray = require('force-array');
+const get = require('lodash.get');
+const date = require('date.js');
+const timestamp = require('internet-timestamp');
+const got = require('got');
+const url = require('url');
+const qs = require('qs');
+
+const transform = (res) => {
+  return forceArray(res).reduce((sum, { data }) => {
+    const result = !Array.isArray(data)
+      ? data.result
+      : data;
+
+    return result.reduce((sum, inst) => {
+      const metric = !inst.job
+        ? inst.metric
+        : inst;
+
+      const {
+        values = [],
+        value = []
+      } = inst;
+
+      const {
+        instance,
+        job,
+        __name__
+      } = metric;
+
+      const oldJob = get(sum, job, {});
+      const oldInstance = get(sum, `${job}.${instance}`, {});
+      const _value = values.length ? values : value
+
+      return Object.assign(sum, {
+        [job]: Object.assign(oldJob, {
+          [instance]: Object.assign(oldInstance, {
+            [__name__]: _value
+          })
+        })
+      })
+    }, sum);
+  }, {});
+};
+
+const range = module.exports.range = async ({
+  query = [],
+  ago = '24h ago',
+  step = '15s',
+  host = 'localhost:9090'
+}) => {
+  const end = timestamp(new Date());
+  const start = timestamp(date(ago));
+
+  const ranges = await map(forceArray(query), async (query) => {
+    return await got(url.format({
+      protocol: 'http:',
+      slashes: true,
+      host: host,
+      pathname: '/api/v1/query_range',
+      query: {
+        query,
+        end,
+        step,
+        start
+      }
+    }))
+  });
+
+  return transform(
+    ranges.map((range) => JSON.parse(range.body))
+  );
+};
+
+const query = module.exports.query = async ({
+  host = 'localhost:9090',
+  query = []
+}) => {
+  const res = await map(query, async (query) => {
+    return await got(url.format({
+      protocol: 'http:',
+      slashes: true,
+      host: host,
+      pathname: '/api/v1/query',
+      query: {
+        query: query
+      }
+    }))
+  });
+
+  return transform(
+    res.map((res) => JSON.parse(res.body))
+  );
+};
+
+const tree = module.exports.tree = async ({
+  host = 'localhost:9090',
+  query = []
+}) => {
+  const res = await got(url.format({
+    protocol: 'http:',
+    slashes: true,
+    host: host,
+    pathname: '/api/v1/series',
+    search: qs.stringify({
+      match: query
+    }, {
+      arrayFormat: 'brackets'
+    })
+  }));
+
+  return transform(JSON.parse(res.body));
+};
+
+if (!module.parent) {
+  process.on('unhandledRejection', (reason) => {
+    throw reason
+  });
+
+  const usage = () => {
+    console.error(`
+      Usage: node metrics.js --type={type} --query={metric} --step={step} --ago={ago}
+             node scripts/prometheus.js --type=range --query=node_memory_heap_used_bytes --query=node_memory_heap_total_bytes
+    `.trim());
+
+    return process.exit(1);
+  }
+
+  const argv = require('minimist')(process.argv.slice(2));
+
+  if (!argv.query || !argv.type) {
+    return usage();
+  }
+
+  const handlers = {
+    tree,
+    range,
+    query
+  };
+
+  if (!handlers[argv.type]) {
+    return usage();
+  }
+
+  const conf = {
+    query: argv.query,
+    ago: argv.ago,
+    step: argv.step,
+    host: argv.host
+  };
+
+  handlers[argv.type](conf).then((res) => {
+    console.log(JSON.stringify(res, null, 2));
+  });
+}

spikes/no-leak/scripts/start.js

@@ -0,0 +1,38 @@
+const cp = require('child_process');
+const path = require('path');
+
+const TYPE = process.env.TYPE;
+const MODE = process.env.MODE;
+
+if (!TYPE) {
+  console.error(`
+Usage: TYPE={type} node start.js
+       TYPE=node node start.js
+  `.trim());
+
+  process.exit(1);
+}
+
+const handler = ({
+  node: () => {
+    const root = path.join(__dirname, '../');
+    const script = path.join(root, 'src/server/index.js');
+    return cp.exec(`node ${script}`, {
+      cwd: __dirname
+    });
+  },
+  artillery: () => {
+    const conf = path.join(__dirname, '../artillery/artillery-${MODE}.yml');
+    const bin = path.join(__dirname, '../node_modules/.bin/artillery');
+    return cp.exec(`${bin} run ${conf}`);
+  }
+})[TYPE];
+
+if (!handler) {
+  console.error(`No handler for ${TYPE}`);
+  process.exit(1);
+}
+
+handler().stdout.pipe(process.stdout);
+handler().stderr.pipe(process.stderr);
+process.stdin.pipe(handler().stdin);

spikes/no-leak/sort.js

@@ -0,0 +1,44 @@
+const uniq = require('lodash.uniq');
+const flatten = require('lodash.flatten');
+const argv = require('minimist')(process.argv);
+const moment = require('moment');
+const path = require('path');
+const fs = require('fs');
+
+if (!argv.file) {
+  throw new Error('--file required');
+}
+
+const filename = path.resolve(__dirname, argv.file);
+
+if (!fs.existsSync(filename)) {
+  throw new Error('--file does not exist');
+}
+
+const data = require(filename);
+const metrics = flatten(uniq(Object.keys(data.leak).map((service) => {
+  return Object.keys(data.leak[service]);
+})));
+
+const aggregated = metrics.reduce((agg, name) => Object.assign(agg, {
+  [name]: []
+}), {});
+
+const sort = (set) => {
+  return set.sort((a, b) => {
+    return moment(a[0], 'X').isAfter(moment(b[0], 'X')) ? 1 : -1;
+  });
+};
+
+Object.keys(data.leak).forEach((service) => {
+  Object.keys(data.leak[service]).forEach((metric) => {
+    aggregated[metric] = aggregated[metric].concat(data.leak[service][metric]);
+  });
+});
+
+Object.keys(aggregated).forEach((metric) => {
+  console.error(metric);
+  aggregated[metric] = sort(aggregated[metric]);
+});
+
+console.log(JSON.stringify(aggregated, null, 2));

spikes/no-leak/src/client/actions.js

@@ -0,0 +1,109 @@
+const take = require('lodash.take');
+const get = require('lodash.get');
+
+const actions = {
+  'UPDATE_STATS': (state, action) => {
+    const data = get(state, `data.${action.subscription}`, {
+      cpu: [],
+      mem: [],
+      disk: []
+    });
+
+    const newData = ['cpu', 'mem', 'disk'].reduce((sum, key) => {
+      const item = {
+        ...action.payload.stats[key],
+        when: action.payload.when
+      };
+
+      const prepended = [item].concat(data[key]);
+
+      return {
+        ...sum,
+        [key]: take(prepended, state.windowSize)
+      };
+    }, {});
+
+    return {
+      ...state,
+      data: {
+        ...state.data,
+        [action.subscription]: newData
+      }
+    };
+  },
+  'GET_JOB_TREE_FULFILLED': (state, action) => {
+    return {
+      ...state,
+      tree: action.payload
+    };
+  }
+};
+
+module.exports = (state, action) => {
+  return !actions[action.type] ? state : actions[action.type](state, action);
+};
+
+module.exports.subscribe = (id) => (dispatch, getState) => {
+  const {
+    ws
+  } = getState();
+
+  const p = new Promise((resolve, reject) => {
+    ws.subscribe(`/stats/${id}`, (update, flag) => {
+      dispatch({
+        type: 'UPDATE_STATS',
+        payload: update,
+        subscription: id
+      });
+    }, (err) => {
+      if (err) {
+        return reject(err);
+      }
+
+      resolve();
+    });
+  });
+
+  return dispatch({
+    type: 'SUBSCRIBE',
+    payload: p
+  });
+};
+
+module.exports.unsubscribe = (id) => (dispatch, getState) => {
+  const {
+    ws
+  } = getState();
+
+  const p = new Promise((resolve, reject) => {
+    ws.unsubscribe(`/stats/${id}`, null, (err) => {
+      if (err) {
+        return reject(err);
+      }
+
+      resolve();
+    });
+  });
+
+  return dispatch({
+    type: 'UNSUBSCRIBE',
+    payload: p
+  });
+};
+
+module.exports.getTree = (id) => (dispatch, getState) => {
+  const {
+    ws
+  } = getState();
+
+  const p = new Promise((resolve, reject) => {
+    ws.request(`/job-tree`, (err, payload) => {
+      return err ? reject(err) : resolve(payload);
+    });
+  });
+
+  return dispatch({
+    type: 'GET_JOB_TREE',
+    payload: p
+  });
+};

spikes/no-leak/src/client/chart/base.js

@@ -0,0 +1,85 @@
+const buildArray = require('build-array');
+const Chart = require('chart.js');
+const React = require('react');
+const whisker = require('../whisker');
+whisker(Chart);
+
+module.exports = React.createClass({
+  ref: function(name) {
+    this._refs = this._refs || {};
+
+    return (el) => {
+      this._refs[name] = el;
+    };
+  },
+  componentDidMount: function() {
+    const {
+      datasets = [],
+      labels = 0,
+      stacked = false,
+      xAxe = false,
+      yAxe = false,
+      legend = false,
+      max = 100,
+      min = 0
+    } = this.props;
+
+    const _labels = !Array.isArray(labels)
+      ? buildArray(labels).map((v, i) => '')
+      : labels;
+
+    this._chart = new Chart(this._refs.component, {
+      type: 'whisker',
+      responsive: true,
+      options: {
+        scales: {
+          xAxes: [{
+            barPercentage: 1.0,
+            categoryPercentage: 1.0
+          }],
+          yAxes: [{
+            ticks: {
+              min: min,
+              max: max
+            }
+          }]
+        },
+        legend: {
+          display: true
+        }
+      },
+      data: {
+        labels: _labels,
+        datasets: datasets
+      }
+    });
+  },
+  componentWillReceiveProps: function(nextProps) {
+    const {
+      datasets = [],
+      labels = 0,
+      max,
+      min
+    } = this.props;
+
+    this._chart.data.datasets = datasets;
+    this._chart.data.labels = buildArray(labels).map((v, i) => '');
+    this._chart.config.options.scales.yAxes[0].ticks.max = max;
+    this._chart.config.options.scales.yAxes[0].ticks.min = min;
+    this._chart.update(0);
+  },
+  render: function() {
+    return (
+      <canvas
+        ref={this.ref('component')}
+        width='400'
+        height='400'
+      />
+    );
+  }
+});
+
+
+/*
+ * datasets[{altbackgr, back, data[{max, min, ...}, label]}]
+ */

spikes/no-leak/src/client/chart/cpu.js

@@ -0,0 +1,34 @@
+const buildArray = require('build-array');
+const Chart = require('./base');
+const React = require('react');
+
+const colors = {
+  user: 'rgb(255, 99, 132)',
+  sys: 'rgb(255, 159, 64)',
+  perc: 'rgba(54, 74, 205, 0.2)',
+  alt: 'rgba(245, 93, 93, 0.2)'
+};
+
+module.exports = ({
+  data = {},
+  windowSize
+}) => {
+  const datasets = ['perc'].map((key) => {
+    return {
+      label: key,
+      backgroundColor: colors[key],
+      altBackgroundColor: colors['alt'],
+      data: buildArray(windowSize).map((v, i) => ((data[i] || {})[key] || { firstQuartile: 0, thirdQuartile: 0, median: 0, max: 0, min: 0 })).reverse()
+    };
+  });
+
+  return (
+    <Chart
+      datasets={datasets}
+      stacked={true}
+      labels={datasets[0].data.length}
+      legend={true}
+    />
+  );
+};
+

spikes/no-leak/src/client/chart/disk.js

@@ -0,0 +1,29 @@
+const buildArray = require('build-array');
+const Chart = require('./base');
+const React = require('react');
+
+const colors = {
+  perc: 'rgba(54, 74, 205, 0.2)',
+  alt: 'rgba(245, 93, 93, 0.2)'
+};
+
+module.exports = ({
+  data = [],
+  windowSize
+}) => {
+  const datasets = [{
+    label: 'disk',
+    backgroundColor: colors['perc'],
+    altBackgroundColor: colors['alt'],
+    data: buildArray(windowSize).map((v, i) => ((data[i] || {})['perc'] || { firstQuartile: 0, thirdQuartile: 0, median: 0, max: 0, min: 0 })).reverse()
+  }];
+
+  return (
+    <Chart
+      datasets={datasets}
+      labels={datasets[0].data.length}
+      legend={true}
+    />
+  );
+};
+

spikes/no-leak/src/client/chart/index.js

@@ -0,0 +1,8 @@
+module.exports = {
+  CPU: require('./cpu'),
+  cpu: require('./cpu'),
+  Mem: require('./mem'),
+  mem: require('./mem'),
+  Disk: require('./disk'),
+  disk: require('./disk')
+};

spikes/no-leak/src/client/chart/mem.js

@@ -0,0 +1,54 @@
+const first = require('lodash.first');
+const get = require('lodash.get');
+const buildArray = require('build-array');
+const Chart = require('./base');
+const React = require('react');
+
+const colors = {
+  perc: 'rgba(54, 74, 205, 0.2)',
+  alt: 'rgba(245, 93, 93, 0.2)'
+};
+
+module.exports = ({
+  data = [],
+  windowSize,
+  aggregate = false,
+  name = 'mem',
+  max = 100
+}) => {
+  const datasets = [{
+    label: name,
+    backgroundColor: colors.perc,
+    altBackgroundColor: colors.alt,
+    data: buildArray(windowSize).map((v, i) => {
+      const sample = get(data, `[${i}].perc`, {
+        firstQuartile: 0,
+        thirdQuartile: 0,
+        median: 0,
+        max: 0,
+        min: 0
+      });
+
+      return Object.keys(sample).reduce((sum, name) => {
+        // from bytes to mb
+        return {
+          ...sum,
+          [name]: (sample[name] > 0)
+            ?  sample[name] / 1000000
+            : sample[name]
+        };
+      }, {});
+    }).reverse()
+  }];
+
+  return (
+    <Chart
+      datasets={datasets}
+      stacked={aggregate}
+      labels={first(datasets).data.length}
+      legend={true}
+      max={max/1000000}
+    />
+  );
+};
+

spikes/no-leak/src/client/element.whisker.js

@@ -0,0 +1,221 @@
+'use strict';
+
+module.exports = function(Chart) {
+
+  var globalOpts = Chart.defaults.global;
+
+  globalOpts.elements.rectangle = {
+    backgroundColor: globalOpts.defaultColor,
+    borderWidth: 0,
+    borderColor: globalOpts.defaultColor,
+    borderSkipped: 'bottom'
+  };
+
+  function isVertical(bar) {
+    return bar._view.width !== undefined;
+  }
+
+  /**
+   * Helper function to get the bounds of the bar regardless of the orientation
+   * @private
+   * @param bar {Chart.Element.Rectangle} the bar
+   * @return {Bounds} bounds of the bar
+   */
+  function getBarBounds(bar) {
+    var vm = bar._view;
+    var x1, x2, y1, y2;
+
+    if (isVertical(bar)) {
+      // vertical
+      var halfWidth = vm.width / 2;
+      x1 = vm.x - halfWidth;
+      x2 = vm.x + halfWidth;
+      y1 = Math.min(vm.y, vm.base);
+      y2 = Math.max(vm.y, vm.base);
+    } else {
+      // horizontal bar
+      var halfHeight = vm.height / 2;
+      x1 = Math.min(vm.x, vm.base);
+      x2 = Math.max(vm.x, vm.base);
+      y1 = vm.y - halfHeight;
+      y2 = vm.y + halfHeight;
+    }
+
+    return {
+      left: x1,
+      top: y1,
+      right: x2,
+      bottom: y2
+    };
+  }
+
+  Chart.elements.Whisker = Chart.Element.extend({
+    draw: function() {
+      var ctx = this._chart.ctx;
+      var vm = this._view;
+
+      var halfWidth = vm.width / 2,
+        leftX = vm.x - halfWidth,
+        rightX = vm.x + halfWidth,
+        top = vm.base - (vm.base - vm.y),
+        halfStroke = vm.borderWidth / 2;
+
+      // Canvas doesn't allow us to stroke inside the width so we can
+      // adjust the sizes to fit if we're setting a stroke on the line
+      if (vm.borderWidth) {
+        leftX += halfStroke;
+        rightX -= halfStroke;
+        top += halfStroke;
+      }
+
+      ctx.beginPath();
+      ctx.fillStyle = vm.backgroundColor;
+      ctx.strokeStyle = vm.borderColor;
+      ctx.lineWidth = vm.borderWidth;
+
+      // Corner points, from bottom-left to bottom-right clockwise
+      // | 1 2 |
+      // | 0 3 |
+      var corners = [
+        [leftX, vm.base],
+        [leftX, top],
+        [rightX, top],
+        [rightX, vm.base]
+      ];
+
+      // Find first (starting) corner with fallback to 'bottom'
+      var borders = ['bottom', 'left', 'top', 'right'];
+      var startCorner = borders.indexOf(vm.borderSkipped, 0);
+      if (startCorner === -1) {
+        startCorner = 0;
+      }
+
+      function cornerAt(index) {
+        return corners[(startCorner + index) % 4];
+      }
+
+      // Draw rectangle from 'startCorner'
+      var corner = cornerAt(0);
+      ctx.moveTo(corner[0], corner[1]);
+
+      for (var i = 1; i < 4; i++) {
+        corner = cornerAt(i);
+        ctx.lineTo(corner[0], corner[1]);
+      }
+
+      ctx.fill();
+      if (vm.borderWidth) {
+        ctx.stroke();
+      }
+      ctx.closePath();
+
+      // Median line
+      ctx.beginPath();
+
+      ctx.moveTo(leftX, vm.median);
+      ctx.lineTo(rightX, vm.median);
+      ctx.lineWidth = 2;
+
+      // set line color
+      ctx.strokeStyle = 'rgb(54, 74, 205)';
+      ctx.stroke();
+      ctx.closePath();
+
+      // Top Whisker
+      // if (smaller than 5px then do not draw)
+      if (vm.median - vm.maxV > 10) {
+        ctx.beginPath();
+        ctx.moveTo((rightX - leftX) / 2 + leftX, vm.median - 1);
+        ctx.lineTo((rightX - leftX) / 2 + leftX, vm.maxV);
+        ctx.lineWidth = 2;
+        ctx.strokeStyle = 'rgb(245, 93, 93)';
+        ctx.stroke();
+        ctx.closePath();
+        ctx.beginPath();
+        ctx.arc((rightX - leftX) / 2 + leftX, vm.maxV, 3, 0, 2 * Math.PI);
+        ctx.fillStyle = 'rgb(245, 93, 93)';
+        ctx.fill();
+      }
+
+      // Bottom Whisker
+      // if (smaller than 5px then do not draw)
+      if (vm.minV - vm.median > 10) {
+        ctx.beginPath();
+        ctx.moveTo((rightX - leftX) / 2 + leftX, vm.median + 1);
+        ctx.lineTo((rightX - leftX) / 2 + leftX, vm.minV);
+        ctx.lineWidth = 2;
+        ctx.strokeStyle = 'rgb(245, 93, 93)';
+        ctx.stroke();
+        ctx.closePath();
+        ctx.beginPath();
+        ctx.arc((rightX - leftX) / 2 + leftX, vm.minV, 3, 0, 2 * Math.PI);
+        ctx.fillStyle = 'rgb(245, 93, 93)';
+        ctx.fill();
+      }
+    },
+    height: function() {
+      var vm = this._view;
+      return vm.base - vm.y;
+    },
+    inRange: function(mouseX, mouseY) {
+      var inRange = false;
+
+      if (this._view) {
+        var bounds = getBarBounds(this);
+        inRange = mouseX >= bounds.left && mouseX <= bounds.right && mouseY >= bounds.top && mouseY <= bounds.bottom;
+      }
+
+      return inRange;
+    },
+    inLabelRange: function(mouseX, mouseY) {
+      var me = this;
+      if (!me._view) {
+        return false;
+      }
+
+      var inRange = false;
+      var bounds = getBarBounds(me);
+
+      if (isVertical(me)) {
+        inRange = mouseX >= bounds.left && mouseX <= bounds.right;
+      } else {
+        inRange = mouseY >= bounds.top && mouseY <= bounds.bottom;
+      }
+
+      return inRange;
+    },
+    inXRange: function(mouseX) {
+      var bounds = getBarBounds(this);
+      return mouseX >= bounds.left && mouseX <= bounds.right;
+    },
+    inYRange: function(mouseY) {
+      var bounds = getBarBounds(this);
+      return mouseY >= bounds.top && mouseY <= bounds.bottom;
+    },
+    getCenterPoint: function() {
+      var vm = this._view;
+      var x, y;
+      if (isVertical(this)) {
+        x = vm.x;
+        y = (vm.y + vm.base) / 2;
+      } else {
+        x = (vm.x + vm.base) / 2;
+        y = vm.y;
+      }
+
+      return {x: x, y: y};
+    },
+    getArea: function() {
+      var vm = this._view;
+      return vm.width * Math.abs(vm.y - vm.base);
+    },
+    tooltipPosition: function() {
+      var vm = this._view;
+      return {
+        x: vm.x,
+        y: vm.y
+      };
+    }
+  });
+
+};

spikes/no-leak/src/client/index.js

@@ -0,0 +1,44 @@
+const ReactDOM = require('react-dom');
+const React = require('react');
+const Store = require('./store');
+const nes = require('nes/dist/client');
+
+const {
+  Client
+} = nes;
+
+const client = new Client(`ws://${document.location.host}`);
+
+const store = Store({
+  windowSize: 20,
+  ws: client
+});
+
+client.connect((err) => {
+  if (err) {
+    throw err;
+  }
+
+  store.getState().wsReady = true;
+
+  render();
+});
+
+const render = () => {
+  const Root = require('./root');
+
+  if (!store.getState().wsReady) {
+    return;
+  }
+
+  ReactDOM.render(
+    <Root store={store} />,
+    document.getElementById('root')
+  );
+};
+
+render();
+
+if (module.hot) {
+  module.hot.accept('./root', render);
+}

spikes/no-leak/src/client/matrix.js

@@ -0,0 +1,156 @@
+const get = require('lodash.get');
+const React = require('react');
+const buildArray = require('build-array');
+const ReactRedux = require('react-redux');
+const Chart = require('./chart');
+const actions = require('./actions');
+
+const {
+  connect
+} = ReactRedux;
+
+const {
+  subscribe,
+  unsubscribe,
+  getTree
+} = actions;
+
+const Job = React.createClass({
+  componentWillMount: function() {
+    this.props.subscribe(this.props.name);
+  },
+  componentWillUnmount: function() {
+    this.props.unsubscribe(this.props.name);
+  },
+  render: function() {
+    const {
+      data,
+      instances = [],
+      name,
+      windowSize
+    } = this.props;
+
+    if (!data) {
+      return null;
+    }
+
+    if (instances.length < 2) {
+      return null;
+    }
+
+    let max = 0;
+
+    const charts = ['aggregate'].concat(instances.map((i) => {
+      return `instances.${i}`;
+    })).map((path) => {
+      const set = data.mem.map((sample) => {
+        const perc = get(sample, path);
+
+        if (perc.max > max) {
+          max = perc.max;
+        }
+
+        return {
+          perc: perc,
+          when: sample.when
+        };
+      });
+
+      return {
+        key: path,
+        data: set,
+        aggregate: path === 'aggregate',
+        windowSize
+      };
+    }).map((ctx, i, arr) => {
+      const chart = React.createElement(Chart.mem, {
+        data: ctx.data,
+        aggregate: ctx.aggregate,
+        windowSize: ctx.windowSize,
+        max: max,
+        name: ctx.key
+      });
+
+      return (
+        <div
+          key={ctx.key}
+          className={`col-xs-${12 / arr.length}`}
+        >
+          {chart}
+        </div>
+      );
+    });
+
+    return (
+      <div>
+        <p>{name}</p>
+        <div className='row'>
+          {charts}
+        </div>
+      </div>
+    );
+  }
+});
+
+const Jobs = React.createClass({
+  componentWillMount: function() {
+    this.props.getTree();
+  },
+  render: function() {
+    const {
+      subscribe,
+      unsubscribe,
+      tree = {},
+      data = {},
+      windowSize
+    } = this.props;
+
+
+    const jobs = Object.keys(tree).map((jobName) => {
+      return (
+        <Job
+          key={jobName}
+          windowSize={windowSize}
+          data={data[jobName]}
+          instances={Object.keys(tree[jobName])}
+          subscribe={subscribe}
+          unsubscribe={unsubscribe}
+          name={jobName}
+        />
+      );
+    })
+
+    return (
+      <div>
+        {jobs}
+      </div>
+    );
+  }
+});
+
+const mapStateToProps = (state) => {
+  return {
+    tree: state.tree,
+    data: state.data,
+    windowSize: state.windowSize
+  };
+};
+
+const mapDispatchToProps = (dispatch, ownProps) => {
+  return {
+    subscribe: (name) => {
+      return dispatch(subscribe(name));
+    },
+    unsubscribe: (name) => {
+      return dispatch(unsubscribe(name));
+    },
+    getTree: () => {
+      return dispatch(getTree());
+    }
+  }
+};
+
+module.exports = connect(
+  mapStateToProps,
+  mapDispatchToProps,
+)(Jobs);

spikes/no-leak/src/client/root.js

@@ -0,0 +1,24 @@
+const React = require('react');
+const ReactHotLoader = require('react-hot-loader');
+const ReactRedux = require('react-redux');
+const Matrix = require('./matrix');
+
+const {
+  AppContainer
+} = ReactHotLoader;
+
+const {
+  Provider
+} = ReactRedux;
+
+module.exports = ({
+  store
+}) => {
+  return (
+    <AppContainer>
+      <Provider store={store}>
+        <Matrix />
+      </Provider>
+    </AppContainer>
+  );
+};

spikes/no-leak/src/client/store.js

@@ -0,0 +1,21 @@
+const createLogger = require('redux-logger');
+const promiseMiddleware = require('redux-promise-middleware').default;
+const thunk = require('redux-thunk').default;
+const redux = require('redux');
+const reducer = require('./actions');
+
+const {
+  createStore,
+  compose,
+  applyMiddleware
+} = redux;
+
+module.exports = (state = Object.freeze({})) => {
+  return createStore(reducer, state, applyMiddleware(
+    createLogger({
+      predicate: (getState, action) => action.type !== 'UPDATE_STATS'
+    }),
+    promiseMiddleware(),
+    thunk
+  ));
+};

spikes/no-leak/src/client/whisker.js

@@ -0,0 +1,276 @@
+const whiskerElement = require('./element.whisker');
+
+module.exports = function(Chart) {
+  whiskerElement(Chart);
+
+  var helpers = Chart.helpers;
+
+  Chart.defaults.whisker = {
+    hover: {
+      mode: 'label'
+    },
+
+    scales: {
+      xAxes: [{
+        type: 'category',
+
+        // Specific to Bar Controller
+        categoryPercentage: 0.8,
+        barPercentage: 0.9,
+
+        // grid line settings
+        gridLines: {
+          offsetGridLines: true
+        }
+      }],
+      yAxes: [{
+        type: 'linear'
+      }]
+    }
+  };
+
+  Chart.controllers.whisker = Chart.DatasetController.extend({
+
+    dataElementType: Chart.elements.Whisker,
+
+    initialize: function(chart, datasetIndex) {
+      Chart.DatasetController.prototype.initialize.call(this, chart, datasetIndex);
+
+      // Use this to indicate that this is a bar dataset.
+      this.getMeta().bar = true;
+    },
+
+    // Get the number of datasets that display bars. We use this to correctly calculate the bar width
+    getBarCount: function() {
+      var me = this;
+      var barCount = 0;
+      helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
+        var meta = me.chart.getDatasetMeta(datasetIndex);
+        if (meta.bar && me.chart.isDatasetVisible(datasetIndex)) {
+          ++barCount;
+        }
+      }, me);
+      return barCount;
+    },
+
+    update: function(reset) {
+      var me = this;
+      helpers.each(me.getMeta().data, function(rectangle, index) {
+        me.updateElement(rectangle, index, reset);
+      }, me);
+    },
+
+    updateElement: function(rectangle, index, reset) {
+      var me = this;
+      var meta = me.getMeta();
+      var xScale = me.getScaleForId(meta.xAxisID);
+      var yScale = me.getScaleForId(meta.yAxisID);
+      var scaleBase = yScale.getBasePixel();
+      var rectangleElementOptions = me.chart.options.elements.rectangle;
+      var custom = rectangle.custom || {};
+      var dataset = me.getDataset();
+
+      rectangle._xScale = xScale;
+      rectangle._yScale = yScale;
+      rectangle._datasetIndex = me.index;
+      rectangle._index = index;
+
+      var ruler = me.getRuler(index);
+      rectangle._model = {
+        x: me.calculateBarX(index, me.index, ruler),
+        y: reset ? scaleBase : me.boxTopValue(index, me.index),
+
+        // Tooltip
+        label: me.chart.data.labels[index],
+        datasetLabel: dataset.label,
+
+        // Appearance
+        median: reset ? scaleBase : me.medianValue(me.index, index),
+        maxV: reset ? scaleBase : me.maxValue(me.index, index),
+        minV: reset ? scaleBase : me.minValue(me.index, index),
+        base: reset ? scaleBase : me.boxBottomValue(me.index, index),
+        width: me.calculateBarWidth(ruler),
+        backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(me.stddev(me.index, index) > 3 ? dataset.altBackgroundColor : dataset.backgroundColor, index, rectangleElementOptions.backgroundColor),
+        borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleElementOptions.borderSkipped,
+        borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor),
+        borderWidth: custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth)
+      };
+
+      rectangle.pivot();
+    },
+
+    stddev: function(datasetIndex, index) {
+      var me = this;
+      var obj = me.getDataset().data[index];
+      var value = Number(obj.stddev);
+
+      return value;
+    },
+
+    minValue: function(datasetIndex, index) {
+      var me = this;
+      var meta = me.getMeta();
+      var yScale = me.getScaleForId(meta.yAxisID);
+      var obj = me.getDataset().data[index];
+      var value = Number(obj.min);
+
+      return yScale.getPixelForValue(value);
+    },
+
+    maxValue: function(datasetIndex, index) {
+      var me = this;
+      var meta = me.getMeta();
+      var yScale = me.getScaleForId(meta.yAxisID);
+      var obj = me.getDataset().data[index];
+      var value = Number(obj.max);
+
+      return yScale.getPixelForValue(value);
+    },
+
+    medianValue: function(datasetIndex, index) {
+      var me = this;
+      var meta = me.getMeta();
+      var yScale = me.getScaleForId(meta.yAxisID);
+      var obj = me.getDataset().data[index];
+      var value = Number(obj.median);
+
+      return yScale.getPixelForValue(value);
+    },
+
+    boxBottomValue: function(datasetIndex, index) {
+      var me = this;
+      var meta = me.getMeta();
+      var yScale = me.getScaleForId(meta.yAxisID);
+      var obj = me.getDataset().data[index];
+      var value = Number(obj.firstQuartile);
+
+      return yScale.getPixelForValue(value);
+    },
+
+    boxTopValue: function(index, datasetIndex) {
+      var me = this;
+      var meta = me.getMeta();
+      var yScale = me.getScaleForId(meta.yAxisID);
+      var obj = me.getDataset().data[index];
+      var value = Number(obj.thirdQuartile);
+
+      return yScale.getPixelForValue(value);
+    },
+
+    getRuler: function(index) {
+      var me = this;
+      var meta = me.getMeta();
+      var xScale = me.getScaleForId(meta.xAxisID);
+      var datasetCount = me.getBarCount();
+
+      var tickWidth;
+
+      if (xScale.options.type === 'category') {
+        tickWidth = xScale.getPixelForTick(index + 1) - xScale.getPixelForTick(index);
+      } else {
+        // Average width
+        tickWidth = xScale.width / xScale.ticks.length;
+      }
+      var categoryWidth = tickWidth * xScale.options.categoryPercentage;
+      var categorySpacing = (tickWidth - (tickWidth * xScale.options.categoryPercentage)) / 2;
+      var fullBarWidth = categoryWidth / datasetCount;
+
+      if (xScale.ticks.length !== me.chart.data.labels.length) {
+        var perc = xScale.ticks.length / me.chart.data.labels.length;
+        fullBarWidth = fullBarWidth * perc;
+      }
+
+      var barWidth = fullBarWidth * xScale.options.barPercentage;
+      var barSpacing = fullBarWidth - (fullBarWidth * xScale.options.barPercentage);
+
+      return {
+        datasetCount: datasetCount,
+        tickWidth: tickWidth,
+        categoryWidth: categoryWidth,
+        categorySpacing: categorySpacing,
+        fullBarWidth: fullBarWidth,
+        barWidth: barWidth,
+        barSpacing: barSpacing
+      };
+    },
+
+    calculateBarWidth: function(ruler) {
+      var xScale = this.getScaleForId(this.getMeta().xAxisID);
+      if (xScale.options.barThickness) {
+        return xScale.options.barThickness;
+      }
+      return ruler.barWidth;
+    },
+
+    // Get bar index from the given dataset index accounting for the fact that not all bars are visible
+    getBarIndex: function(datasetIndex) {
+      var barIndex = 0;
+      var meta;
+      var j;
+
+      for (j = 0; j < datasetIndex; ++j) {
+        meta = this.chart.getDatasetMeta(j);
+        if (meta.bar && this.chart.isDatasetVisible(j)) {
+          ++barIndex;
+        }
+      }
+
+      return barIndex;
+    },
+
+    calculateBarX: function(index, datasetIndex, ruler) {
+      var me = this;
+      var meta = me.getMeta();
+      var xScale = me.getScaleForId(meta.xAxisID);
+      var barIndex = me.getBarIndex(datasetIndex);
+      var leftTick = xScale.getPixelForValue(null, index, datasetIndex, me.chart.isCombo);
+      leftTick -= me.chart.isCombo ? (ruler.tickWidth / 2) : 0;
+
+      return leftTick +
+        (ruler.barWidth / 2) +
+        ruler.categorySpacing +
+        (ruler.barWidth * barIndex) +
+        (ruler.barSpacing / 2) +
+        (ruler.barSpacing * barIndex);
+    },
+
+    draw: function(ease) {
+      var me = this;
+      var easingDecimal = ease || 1;
+      var metaData = me.getMeta().data;
+      var dataset = me.getDataset();
+      var i, len;
+
+      for (i = 0, len = metaData.length; i < len; ++i) {
+        var d = dataset.data[i];
+        if (d !== null && d !== undefined && typeof d === 'object' && !isNaN(d.median)) {
+          metaData[i].transition(easingDecimal).draw();
+        }
+      }
+    },
+
+    setHoverStyle: function(rectangle) {
+      var dataset = this.chart.data.datasets[rectangle._datasetIndex];
+      var index = rectangle._index;
+
+      var custom = rectangle.custom || {};
+      var model = rectangle._model;
+      model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
+      model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.getHoverColor(model.borderColor));
+      model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
+    },
+
+    removeHoverStyle: function(rectangle) {
+      var dataset = this.chart.data.datasets[rectangle._datasetIndex];
+      var index = rectangle._index;
+      var custom = rectangle.custom || {};
+      var model = rectangle._model;
+      var rectangleElementOptions = this.chart.options.elements.rectangle;
+
+      model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor);
+      model.borderColor = custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor);
+      model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth);
+    }
+
+  });
+};

spikes/no-leak/src/server/index.js

@@ -0,0 +1,30 @@
+const epimetheus = require('epimetheus');
+const requireDir = require('require-dir');
+const plugins = require('./plugins');
+const routes = requireDir('./routes');
+const Hapi = require('hapi');
+
+const server = new Hapi.Server();
+
+server.connection({
+  host: '0.0.0.0',
+  port: 8000
+});
+
+epimetheus.instrument(server);
+
+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}`);
+    });
+  });
+});

spikes/no-leak/src/server/plugins.js

@@ -0,0 +1,21 @@
+const path = require('path');
+
+module.exports = [
+  require('inert'),
+  require('nes'), {
+  register: require('good'),
+  options: {
+    reporters: {
+      console: [{
+        module: 'good-squeeze',
+        name: 'Squeeze',
+        args: [{
+          response: '*',
+          log: '*'
+        }]
+      }, {
+        module: 'good-console'
+      }, 'stdout']
+    }
+  }
+}];

spikes/no-leak/src/server/routes/version.js

@@ -0,0 +1,22 @@
+const Pkg = require('../../../package.json');
+
+const internals = {
+  response: {
+    version: Pkg.version
+  }
+};
+
+const random = (max) => Math.floor(Math.random() * max);
+
+module.exports = (server) => {
+  server.route({
+    method: 'GET',
+    path: '/ops/version',
+    config: {
+      description: 'Returns the version of the server',
+      handler: (request, reply) => {
+        setTimeout(() => reply(internals.response), random(1000));
+      }
+    }
+  });
+};

spikes/no-leak/src/webpack.config.js

@@ -0,0 +1,58 @@
+const webpack = require('webpack');
+const path = require('path');
+
+const config = {
+  debug: true,
+  devtool: 'source-map',
+  context: path.join(__dirname, './client'),
+  app: path.join(__dirname, './client/index.js'),
+  entry: [
+    'webpack-dev-server/client?http://localhost:8080',
+    'webpack/hot/only-dev-server',
+    'react-hot-loader/patch',
+    './index.js'
+  ],
+  output: {
+    path: path.join(__dirname, '../static'),
+    publicPath: '/static/',
+    filename: 'bundle.js'
+  },
+  plugins: [
+    new webpack.HotModuleReplacementPlugin(),
+    new webpack.NoErrorsPlugin(),
+    new webpack.ProvidePlugin({
+      'd3': 'd3'
+    })
+  ],
+  module: {
+    loaders: [{
+      test: /js?$/,
+      exclude: /node_modules/,
+      include: [
+        path.join(__dirname, './client')
+      ],
+      loaders: ['babel-loader']
+    }, {
+      test: /\.json?$/,
+      exclude: /node_modules/,
+      include: [
+        path.join(__dirname, './client')
+      ],
+      loaders: ['json']
+    }]
+  }
+};
+
+const devServer = {
+  hot: true,
+  compress: true,
+  lazy: false,
+  publicPath: config.output.publicPath,
+  historyApiFallback: {
+    index: '../static/index.html'
+  }
+};
+
+module.exports = Object.assign({
+  devServer
+}, config);

spikes/no-leak/static/index.html

@@ -0,0 +1,973 @@
+<!doctype html>
+<html lang='en-US'>
+  <head>
+    <title>React Boilerplate</title>
+    <link rel="stylesheet" type="text/css" href="https://necolas.github.io/normalize.css/latest/normalize.css" />
+    <style>
+      .container-fluid,
+      .container {
+        margin-right: auto;
+        margin-left: auto;
+      }
+
+      .container-fluid {
+        padding-right: 2rem;
+        padding-left: 2rem;
+      }
+
+      .row {
+        box-sizing: border-box;
+        display: -webkit-box;
+        display: -ms-flexbox;
+        display: flex;
+        -webkit-box-flex: 0;
+        -ms-flex: 0 1 auto;
+        flex: 0 1 auto;
+        -webkit-box-orient: horizontal;
+        -webkit-box-direction: normal;
+        -ms-flex-direction: row;
+        flex-direction: row;
+        -ms-flex-wrap: wrap;
+        flex-wrap: wrap;
+        margin-right: -0.5rem;
+        margin-left: -0.5rem;
+      }
+
+      .row.reverse {
+        -webkit-box-orient: horizontal;
+        -webkit-box-direction: reverse;
+        -ms-flex-direction: row-reverse;
+        flex-direction: row-reverse;
+      }
+
+      .col.reverse {
+        -webkit-box-orient: vertical;
+        -webkit-box-direction: reverse;
+        -ms-flex-direction: column-reverse;
+        flex-direction: column-reverse;
+      }
+
+      .col-xs,
+      .col-xs-1,
+      .col-xs-2,
+      .col-xs-3,
+      .col-xs-4,
+      .col-xs-5,
+      .col-xs-6,
+      .col-xs-7,
+      .col-xs-8,
+      .col-xs-9,
+      .col-xs-10,
+      .col-xs-11,
+      .col-xs-12,
+      .col-xs-offset-0,
+      .col-xs-offset-1,
+      .col-xs-offset-2,
+      .col-xs-offset-3,
+      .col-xs-offset-4,
+      .col-xs-offset-5,
+      .col-xs-offset-6,
+      .col-xs-offset-7,
+      .col-xs-offset-8,
+      .col-xs-offset-9,
+      .col-xs-offset-10,
+      .col-xs-offset-11,
+      .col-xs-offset-12 {
+        box-sizing: border-box;
+        -webkit-box-flex: 0;
+        -ms-flex: 0 0 auto;
+        flex: 0 0 auto;
+        padding-right: 0.5rem;
+        padding-left: 0.5rem;
+      }
+
+      .col-xs {
+        -webkit-box-flex: 1;
+        -ms-flex-positive: 1;
+        flex-grow: 1;
+        -ms-flex-preferred-size: 0;
+        flex-basis: 0;
+        max-width: 100%;
+      }
+
+      .col-xs-1 {
+        -ms-flex-preferred-size: 8.33333333%;
+        flex-basis: 8.33333333%;
+        max-width: 8.33333333%;
+      }
+
+      .col-xs-2 {
+        -ms-flex-preferred-size: 16.66666667%;
+        flex-basis: 16.66666667%;
+        max-width: 16.66666667%;
+      }
+
+      .col-xs-3 {
+        -ms-flex-preferred-size: 25%;
+        flex-basis: 25%;
+        max-width: 25%;
+      }
+
+      .col-xs-4 {
+        -ms-flex-preferred-size: 33.33333333%;
+        flex-basis: 33.33333333%;
+        max-width: 33.33333333%;
+      }
+
+      .col-xs-5 {
+        -ms-flex-preferred-size: 41.66666667%;
+        flex-basis: 41.66666667%;
+        max-width: 41.66666667%;
+      }
+
+      .col-xs-6 {
+        -ms-flex-preferred-size: 50%;
+        flex-basis: 50%;
+        max-width: 50%;
+      }
+
+      .col-xs-7 {
+        -ms-flex-preferred-size: 58.33333333%;
+        flex-basis: 58.33333333%;
+        max-width: 58.33333333%;
+      }
+
+      .col-xs-8 {
+        -ms-flex-preferred-size: 66.66666667%;
+        flex-basis: 66.66666667%;
+        max-width: 66.66666667%;
+      }
+
+      .col-xs-9 {
+        -ms-flex-preferred-size: 75%;
+        flex-basis: 75%;
+        max-width: 75%;
+      }
+
+      .col-xs-10 {
+        -ms-flex-preferred-size: 83.33333333%;
+        flex-basis: 83.33333333%;
+        max-width: 83.33333333%;
+      }
+
+      .col-xs-11 {
+        -ms-flex-preferred-size: 91.66666667%;
+        flex-basis: 91.66666667%;
+        max-width: 91.66666667%;
+      }
+
+      .col-xs-12 {
+        -ms-flex-preferred-size: 100%;
+        flex-basis: 100%;
+        max-width: 100%;
+      }
+
+      .col-xs-offset-0 {
+        margin-left: 0;
+      }
+
+      .col-xs-offset-1 {
+        margin-left: 8.33333333%;
+      }
+
+      .col-xs-offset-2 {
+        margin-left: 16.66666667%;
+      }
+
+      .col-xs-offset-3 {
+        margin-left: 25%;
+      }
+
+      .col-xs-offset-4 {
+        margin-left: 33.33333333%;
+      }
+
+      .col-xs-offset-5 {
+        margin-left: 41.66666667%;
+      }
+
+      .col-xs-offset-6 {
+        margin-left: 50%;
+      }
+
+      .col-xs-offset-7 {
+        margin-left: 58.33333333%;
+      }
+
+      .col-xs-offset-8 {
+        margin-left: 66.66666667%;
+      }
+
+      .col-xs-offset-9 {
+        margin-left: 75%;
+      }
+
+      .col-xs-offset-10 {
+        margin-left: 83.33333333%;
+      }
+
+      .col-xs-offset-11 {
+        margin-left: 91.66666667%;
+      }
+
+      .start-xs {
+        -webkit-box-pack: start;
+        -ms-flex-pack: start;
+        justify-content: flex-start;
+        text-align: start;
+      }
+
+      .center-xs {
+        -webkit-box-pack: center;
+        -ms-flex-pack: center;
+        justify-content: center;
+        text-align: center;
+      }
+
+      .end-xs {
+        -webkit-box-pack: end;
+        -ms-flex-pack: end;
+        justify-content: flex-end;
+        text-align: end;
+      }
+
+      .top-xs {
+        -webkit-box-align: start;
+        -ms-flex-align: start;
+        align-items: flex-start;
+      }
+
+      .middle-xs {
+        -webkit-box-align: center;
+        -ms-flex-align: center;
+        align-items: center;
+      }
+
+      .bottom-xs {
+        -webkit-box-align: end;
+        -ms-flex-align: end;
+        align-items: flex-end;
+      }
+
+      .around-xs {
+        -ms-flex-pack: distribute;
+        justify-content: space-around;
+      }
+
+      .between-xs {
+        -webkit-box-pack: justify;
+        -ms-flex-pack: justify;
+        justify-content: space-between;
+      }
+
+      .first-xs {
+        -webkit-box-ordinal-group: 0;
+        -ms-flex-order: -1;
+        order: -1;
+      }
+
+      .last-xs {
+        -webkit-box-ordinal-group: 2;
+        -ms-flex-order: 1;
+        order: 1;
+      }
+
+      @media only screen and (min-width: 48em) {
+        .container {
+          width: 49rem;
+        }
+
+        .col-sm,
+        .col-sm-1,
+        .col-sm-2,
+        .col-sm-3,
+        .col-sm-4,
+        .col-sm-5,
+        .col-sm-6,
+        .col-sm-7,
+        .col-sm-8,
+        .col-sm-9,
+        .col-sm-10,
+        .col-sm-11,
+        .col-sm-12,
+        .col-sm-offset-0,
+        .col-sm-offset-1,
+        .col-sm-offset-2,
+        .col-sm-offset-3,
+        .col-sm-offset-4,
+        .col-sm-offset-5,
+        .col-sm-offset-6,
+        .col-sm-offset-7,
+        .col-sm-offset-8,
+        .col-sm-offset-9,
+        .col-sm-offset-10,
+        .col-sm-offset-11,
+        .col-sm-offset-12 {
+          box-sizing: border-box;
+          -webkit-box-flex: 0;
+          -ms-flex: 0 0 auto;
+          flex: 0 0 auto;
+          padding-right: 0.5rem;
+          padding-left: 0.5rem;
+        }
+
+        .col-sm {
+          -webkit-box-flex: 1;
+          -ms-flex-positive: 1;
+          flex-grow: 1;
+          -ms-flex-preferred-size: 0;
+          flex-basis: 0;
+          max-width: 100%;
+        }
+
+        .col-sm-1 {
+          -ms-flex-preferred-size: 8.33333333%;
+          flex-basis: 8.33333333%;
+          max-width: 8.33333333%;
+        }
+
+        .col-sm-2 {
+          -ms-flex-preferred-size: 16.66666667%;
+          flex-basis: 16.66666667%;
+          max-width: 16.66666667%;
+        }
+
+        .col-sm-3 {
+          -ms-flex-preferred-size: 25%;
+          flex-basis: 25%;
+          max-width: 25%;
+        }
+
+        .col-sm-4 {
+          -ms-flex-preferred-size: 33.33333333%;
+          flex-basis: 33.33333333%;
+          max-width: 33.33333333%;
+        }
+
+        .col-sm-5 {
+          -ms-flex-preferred-size: 41.66666667%;
+          flex-basis: 41.66666667%;
+          max-width: 41.66666667%;
+        }
+
+        .col-sm-6 {
+          -ms-flex-preferred-size: 50%;
+          flex-basis: 50%;
+          max-width: 50%;
+        }
+
+        .col-sm-7 {
+          -ms-flex-preferred-size: 58.33333333%;
+          flex-basis: 58.33333333%;
+          max-width: 58.33333333%;
+        }
+
+        .col-sm-8 {
+          -ms-flex-preferred-size: 66.66666667%;
+          flex-basis: 66.66666667%;
+          max-width: 66.66666667%;
+        }
+
+        .col-sm-9 {
+          -ms-flex-preferred-size: 75%;
+          flex-basis: 75%;
+          max-width: 75%;
+        }
+
+        .col-sm-10 {
+          -ms-flex-preferred-size: 83.33333333%;
+          flex-basis: 83.33333333%;
+          max-width: 83.33333333%;
+        }
+
+        .col-sm-11 {
+          -ms-flex-preferred-size: 91.66666667%;
+          flex-basis: 91.66666667%;
+          max-width: 91.66666667%;
+        }
+
+        .col-sm-12 {
+          -ms-flex-preferred-size: 100%;
+          flex-basis: 100%;
+          max-width: 100%;
+        }
+
+        .col-sm-offset-0 {
+          margin-left: 0;
+        }
+
+        .col-sm-offset-1 {
+          margin-left: 8.33333333%;
+        }
+
+        .col-sm-offset-2 {
+          margin-left: 16.66666667%;
+        }
+
+        .col-sm-offset-3 {
+          margin-left: 25%;
+        }
+
+        .col-sm-offset-4 {
+          margin-left: 33.33333333%;
+        }
+
+        .col-sm-offset-5 {
+          margin-left: 41.66666667%;
+        }
+
+        .col-sm-offset-6 {
+          margin-left: 50%;
+        }
+
+        .col-sm-offset-7 {
+          margin-left: 58.33333333%;
+        }
+
+        .col-sm-offset-8 {
+          margin-left: 66.66666667%;
+        }
+
+        .col-sm-offset-9 {
+          margin-left: 75%;
+        }
+
+        .col-sm-offset-10 {
+          margin-left: 83.33333333%;
+        }
+
+        .col-sm-offset-11 {
+          margin-left: 91.66666667%;
+        }
+
+        .start-sm {
+          -webkit-box-pack: start;
+          -ms-flex-pack: start;
+          justify-content: flex-start;
+          text-align: start;
+        }
+
+        .center-sm {
+          -webkit-box-pack: center;
+          -ms-flex-pack: center;
+          justify-content: center;
+          text-align: center;
+        }
+
+        .end-sm {
+          -webkit-box-pack: end;
+          -ms-flex-pack: end;
+          justify-content: flex-end;
+          text-align: end;
+        }
+
+        .top-sm {
+          -webkit-box-align: start;
+          -ms-flex-align: start;
+          align-items: flex-start;
+        }
+
+        .middle-sm {
+          -webkit-box-align: center;
+          -ms-flex-align: center;
+          align-items: center;
+        }
+
+        .bottom-sm {
+          -webkit-box-align: end;
+          -ms-flex-align: end;
+          align-items: flex-end;
+        }
+
+        .around-sm {
+          -ms-flex-pack: distribute;
+          justify-content: space-around;
+        }
+
+        .between-sm {
+          -webkit-box-pack: justify;
+          -ms-flex-pack: justify;
+          justify-content: space-between;
+        }
+
+        .first-sm {
+          -webkit-box-ordinal-group: 0;
+          -ms-flex-order: -1;
+          order: -1;
+        }
+
+        .last-sm {
+          -webkit-box-ordinal-group: 2;
+          -ms-flex-order: 1;
+          order: 1;
+        }
+      }
+
+      @media only screen and (min-width: 64em) {
+        .container {
+          width: 65rem;
+        }
+
+        .col-md,
+        .col-md-1,
+        .col-md-2,
+        .col-md-3,
+        .col-md-4,
+        .col-md-5,
+        .col-md-6,
+        .col-md-7,
+        .col-md-8,
+        .col-md-9,
+        .col-md-10,
+        .col-md-11,
+        .col-md-12,
+        .col-md-offset-0,
+        .col-md-offset-1,
+        .col-md-offset-2,
+        .col-md-offset-3,
+        .col-md-offset-4,
+        .col-md-offset-5,
+        .col-md-offset-6,
+        .col-md-offset-7,
+        .col-md-offset-8,
+        .col-md-offset-9,
+        .col-md-offset-10,
+        .col-md-offset-11,
+        .col-md-offset-12 {
+          box-sizing: border-box;
+          -webkit-box-flex: 0;
+          -ms-flex: 0 0 auto;
+          flex: 0 0 auto;
+          padding-right: 0.5rem;
+          padding-left: 0.5rem;
+        }
+
+        .col-md {
+          -webkit-box-flex: 1;
+          -ms-flex-positive: 1;
+          flex-grow: 1;
+          -ms-flex-preferred-size: 0;
+          flex-basis: 0;
+          max-width: 100%;
+        }
+
+        .col-md-1 {
+          -ms-flex-preferred-size: 8.33333333%;
+          flex-basis: 8.33333333%;
+          max-width: 8.33333333%;
+        }
+
+        .col-md-2 {
+          -ms-flex-preferred-size: 16.66666667%;
+          flex-basis: 16.66666667%;
+          max-width: 16.66666667%;
+        }
+
+        .col-md-3 {
+          -ms-flex-preferred-size: 25%;
+          flex-basis: 25%;
+          max-width: 25%;
+        }
+
+        .col-md-4 {
+          -ms-flex-preferred-size: 33.33333333%;
+          flex-basis: 33.33333333%;
+          max-width: 33.33333333%;
+        }
+
+        .col-md-5 {
+          -ms-flex-preferred-size: 41.66666667%;
+          flex-basis: 41.66666667%;
+          max-width: 41.66666667%;
+        }
+
+        .col-md-6 {
+          -ms-flex-preferred-size: 50%;
+          flex-basis: 50%;
+          max-width: 50%;
+        }
+
+        .col-md-7 {
+          -ms-flex-preferred-size: 58.33333333%;
+          flex-basis: 58.33333333%;
+          max-width: 58.33333333%;
+        }
+
+        .col-md-8 {
+          -ms-flex-preferred-size: 66.66666667%;
+          flex-basis: 66.66666667%;
+          max-width: 66.66666667%;
+        }
+
+        .col-md-9 {
+          -ms-flex-preferred-size: 75%;
+          flex-basis: 75%;
+          max-width: 75%;
+        }
+
+        .col-md-10 {
+          -ms-flex-preferred-size: 83.33333333%;
+          flex-basis: 83.33333333%;
+          max-width: 83.33333333%;
+        }
+
+        .col-md-11 {
+          -ms-flex-preferred-size: 91.66666667%;
+          flex-basis: 91.66666667%;
+          max-width: 91.66666667%;
+        }
+
+        .col-md-12 {
+          -ms-flex-preferred-size: 100%;
+          flex-basis: 100%;
+          max-width: 100%;
+        }
+
+        .col-md-offset-0 {
+          margin-left: 0;
+        }
+
+        .col-md-offset-1 {
+          margin-left: 8.33333333%;
+        }
+
+        .col-md-offset-2 {
+          margin-left: 16.66666667%;
+        }
+
+        .col-md-offset-3 {
+          margin-left: 25%;
+        }
+
+        .col-md-offset-4 {
+          margin-left: 33.33333333%;
+        }
+
+        .col-md-offset-5 {
+          margin-left: 41.66666667%;
+        }
+
+        .col-md-offset-6 {
+          margin-left: 50%;
+        }
+
+        .col-md-offset-7 {
+          margin-left: 58.33333333%;
+        }
+
+        .col-md-offset-8 {
+          margin-left: 66.66666667%;
+        }
+
+        .col-md-offset-9 {
+          margin-left: 75%;
+        }
+
+        .col-md-offset-10 {
+          margin-left: 83.33333333%;
+        }
+
+        .col-md-offset-11 {
+          margin-left: 91.66666667%;
+        }
+
+        .start-md {
+          -webkit-box-pack: start;
+          -ms-flex-pack: start;
+          justify-content: flex-start;
+          text-align: start;
+        }
+
+        .center-md {
+          -webkit-box-pack: center;
+          -ms-flex-pack: center;
+          justify-content: center;
+          text-align: center;
+        }
+
+        .end-md {
+          -webkit-box-pack: end;
+          -ms-flex-pack: end;
+          justify-content: flex-end;
+          text-align: end;
+        }
+
+        .top-md {
+          -webkit-box-align: start;
+          -ms-flex-align: start;
+          align-items: flex-start;
+        }
+
+        .middle-md {
+          -webkit-box-align: center;
+          -ms-flex-align: center;
+          align-items: center;
+        }
+
+        .bottom-md {
+          -webkit-box-align: end;
+          -ms-flex-align: end;
+          align-items: flex-end;
+        }
+
+        .around-md {
+          -ms-flex-pack: distribute;
+          justify-content: space-around;
+        }
+
+        .between-md {
+          -webkit-box-pack: justify;
+          -ms-flex-pack: justify;
+          justify-content: space-between;
+        }
+
+        .first-md {
+          -webkit-box-ordinal-group: 0;
+          -ms-flex-order: -1;
+          order: -1;
+        }
+
+        .last-md {
+          -webkit-box-ordinal-group: 2;
+          -ms-flex-order: 1;
+          order: 1;
+        }
+      }
+
+      @media only screen and (min-width: 75em) {
+        .container {
+          width: 76rem;
+        }
+
+        .col-lg,
+        .col-lg-1,
+        .col-lg-2,
+        .col-lg-3,
+        .col-lg-4,
+        .col-lg-5,
+        .col-lg-6,
+        .col-lg-7,
+        .col-lg-8,
+        .col-lg-9,
+        .col-lg-10,
+        .col-lg-11,
+        .col-lg-12,
+        .col-lg-offset-0,
+        .col-lg-offset-1,
+        .col-lg-offset-2,
+        .col-lg-offset-3,
+        .col-lg-offset-4,
+        .col-lg-offset-5,
+        .col-lg-offset-6,
+        .col-lg-offset-7,
+        .col-lg-offset-8,
+        .col-lg-offset-9,
+        .col-lg-offset-10,
+        .col-lg-offset-11,
+        .col-lg-offset-12 {
+          box-sizing: border-box;
+          -webkit-box-flex: 0;
+          -ms-flex: 0 0 auto;
+          flex: 0 0 auto;
+          padding-right: 0.5rem;
+          padding-left: 0.5rem;
+        }
+
+        .col-lg {
+          -webkit-box-flex: 1;
+          -ms-flex-positive: 1;
+          flex-grow: 1;
+          -ms-flex-preferred-size: 0;
+          flex-basis: 0;
+          max-width: 100%;
+        }
+
+        .col-lg-1 {
+          -ms-flex-preferred-size: 8.33333333%;
+          flex-basis: 8.33333333%;
+          max-width: 8.33333333%;
+        }
+
+        .col-lg-2 {
+          -ms-flex-preferred-size: 16.66666667%;
+          flex-basis: 16.66666667%;
+          max-width: 16.66666667%;
+        }
+
+        .col-lg-3 {
+          -ms-flex-preferred-size: 25%;
+          flex-basis: 25%;
+          max-width: 25%;
+        }
+
+        .col-lg-4 {
+          -ms-flex-preferred-size: 33.33333333%;
+          flex-basis: 33.33333333%;
+          max-width: 33.33333333%;
+        }
+
+        .col-lg-5 {
+          -ms-flex-preferred-size: 41.66666667%;
+          flex-basis: 41.66666667%;
+          max-width: 41.66666667%;
+        }
+
+        .col-lg-6 {
+          -ms-flex-preferred-size: 50%;
+          flex-basis: 50%;
+          max-width: 50%;
+        }
+
+        .col-lg-7 {
+          -ms-flex-preferred-size: 58.33333333%;
+          flex-basis: 58.33333333%;
+          max-width: 58.33333333%;
+        }
+
+        .col-lg-8 {
+          -ms-flex-preferred-size: 66.66666667%;
+          flex-basis: 66.66666667%;
+          max-width: 66.66666667%;
+        }
+
+        .col-lg-9 {
+          -ms-flex-preferred-size: 75%;
+          flex-basis: 75%;
+          max-width: 75%;
+        }
+
+        .col-lg-10 {
+          -ms-flex-preferred-size: 83.33333333%;
+          flex-basis: 83.33333333%;
+          max-width: 83.33333333%;
+        }
+
+        .col-lg-11 {
+          -ms-flex-preferred-size: 91.66666667%;
+          flex-basis: 91.66666667%;
+          max-width: 91.66666667%;
+        }
+
+        .col-lg-12 {
+          -ms-flex-preferred-size: 100%;
+          flex-basis: 100%;
+          max-width: 100%;
+        }
+
+        .col-lg-offset-0 {
+          margin-left: 0;
+        }
+
+        .col-lg-offset-1 {
+          margin-left: 8.33333333%;
+        }
+
+        .col-lg-offset-2 {
+          margin-left: 16.66666667%;
+        }
+
+        .col-lg-offset-3 {
+          margin-left: 25%;
+        }
+
+        .col-lg-offset-4 {
+          margin-left: 33.33333333%;
+        }
+
+        .col-lg-offset-5 {
+          margin-left: 41.66666667%;
+        }
+
+        .col-lg-offset-6 {
+          margin-left: 50%;
+        }
+
+        .col-lg-offset-7 {
+          margin-left: 58.33333333%;
+        }
+
+        .col-lg-offset-8 {
+          margin-left: 66.66666667%;
+        }
+
+        .col-lg-offset-9 {
+          margin-left: 75%;
+        }
+
+        .col-lg-offset-10 {
+          margin-left: 83.33333333%;
+        }
+
+        .col-lg-offset-11 {
+          margin-left: 91.66666667%;
+        }
+
+        .start-lg {
+          -webkit-box-pack: start;
+          -ms-flex-pack: start;
+          justify-content: flex-start;
+          text-align: start;
+        }
+
+        .center-lg {
+          -webkit-box-pack: center;
+          -ms-flex-pack: center;
+          justify-content: center;
+          text-align: center;
+        }
+
+        .end-lg {
+          -webkit-box-pack: end;
+          -ms-flex-pack: end;
+          justify-content: flex-end;
+          text-align: end;
+        }
+
+        .top-lg {
+          -webkit-box-align: start;
+          -ms-flex-align: start;
+          align-items: flex-start;
+        }
+
+        .middle-lg {
+          -webkit-box-align: center;
+          -ms-flex-align: center;
+          align-items: center;
+        }
+
+        .bottom-lg {
+          -webkit-box-align: end;
+          -ms-flex-align: end;
+          align-items: flex-end;
+        }
+
+        .around-lg {
+          -ms-flex-pack: distribute;
+          justify-content: space-around;
+        }
+
+        .between-lg {
+          -webkit-box-pack: justify;
+          -ms-flex-pack: justify;
+          justify-content: space-between;
+        }
+
+        .first-lg {
+          -webkit-box-ordinal-group: 0;
+          -ms-flex-order: -1;
+          order: -1;
+        }
+
+        .last-lg {
+          -webkit-box-ordinal-group: 2;
+          -ms-flex-order: 1;
+          order: 1;
+        }
+      }
+    </style>
+  </head>
+  <body>
+    <div id='root'></div>
+    <script src='/static/bundle.js'></script>
+  </body>
+</html>

spikes/no-leak/watch.js

@@ -0,0 +1,197 @@
+// const DOCKER_URL = url.parse(DOCKER_HOST);
+
+// {
+//   // host: DOCKER_URL.hostname,
+//   // port: DOCKER_URL.port,
+//   // ca: fs.readFileSync(path.join(DOCKER_CERT_PATH, 'ca.pem')),
+//   // cert: fs.readFileSync(path.join(DOCKER_CERT_PATH, 'cert.pem')),
+//   // key: fs.readFileSync(path.join(DOCKER_CERT_PATH, 'key.pem')),
+//   version: 'v1.24'
+// }
+// const DOCKER_CERT_PATH = process.env.DOCKER_CERT_PATH;
+// const DOCKER_HOST = process.env.DOCKER_HOST;
+//
+// if (!DOCKER_HOST || !DOCKER_CERT_PATH) {
+//   throw new Error(`
+//     Required ENV variables: DOCKER_HOST and DOCKER_CERT_PATH
+//   `);
+// }
+
+const prometheus = require('./scripts/prometheus');
+const Docker = require('dockerode');
+const url = require('url');
+const path = require('path');
+const fs = require('fs');
+const delay = require('delay');
+const until = require('apr-until');
+const forEach = require('apr-for-each');
+const filter = require('apr-filter');
+const some = require('apr-some');
+const map = require('apr-map');
+const intercept = require('apr-intercept');
+const find = require('apr-find');
+const parallel = require('apr-parallel');
+const awaitify = require('apr-awaitify');
+const flatten = require('lodash.flatten');
+const yaml = require('js-yaml');
+const axios = require('axios');
+
+const start = new Date().getTime();
+const window = 1000 * 60 * 60 * 5; // 5h
+const interval = 1000 * 15; // 15s
+const dockerComposeFilename = path.join(__dirname, 'docker-compose.yml');
+const services = yaml.safeLoad(fs.readFileSync(dockerComposeFilename, 'utf-8'));
+const docker = new Docker();
+const writeFile = awaitify(fs.writeFile);
+let restarts = 0;
+
+const getContainer = async (Id) => {
+  const container = docker.getContainer(Id)
+  const meta = await container.inspect();
+  return { container, meta };
+};
+
+const getServiceName = ({ Config }) => {
+  return Config.Labels['com.docker.compose.service'];
+};
+
+const getHrefs = async ({ NetworkSettings }) => {
+  const ports = await filter(NetworkSettings.Ports, Boolean);
+
+  const hrefs = await map(ports, async (values = []) => {
+    return await map(values, ({ HostIp, HostPort }) => url.format({
+      hostname: HostIp,
+      port: HostPort,
+      protocol: 'http:',
+      slashes: true
+    }));
+  });
+
+  return flatten(Object.keys(hrefs).map((name) => hrefs[name]));
+};
+
+const findContainer = async (name) => {
+  const ps = await docker.listContainers();
+
+  const { Id } = await find(ps, async ({ Id }) => {
+    const { container, meta } = await getContainer(Id);
+    return getServiceName(meta) === name;
+  });
+
+  return await getContainer(Id);
+}
+
+const report = async () => {
+  const { telemetry, meta } = await findContainer('telemetry')
+  const hrefs = await getHrefs(meta);
+
+  if (!hrefs.length) {
+    console.error('Telemetry service unavailable');
+    return;
+  }
+
+  const [pErr, data] = await intercept(prometheus.range({
+    host: url.parse(hrefs[0]).host,
+    query: [
+      'node_memory_rss_bytes',
+      'node_memory_heap_total_bytes',
+      'node_memory_heap_used_bytes',
+      'process_heap_bytes',
+      'process_resident_memory_bytes',
+      'process_virtual_memory_bytes',
+      'process_cpu_seconds_total',
+      'process_cpu_system_seconds_total',
+      'process_cpu_user_seconds_total',
+      'node_lag_duration_milliseconds',
+      'http_request_duration_milliseconds'
+    ],
+    ago: '24h ago',
+    step: '15s'
+  }));
+
+  if (pErr) {
+    return;
+  }
+
+  const [dErr] = await intercept(writeFile(
+    path.join(__dirname, `datasets-${start}-${restarts}.json`),
+    JSON.stringify(data, null, 2),
+    'utf-8'
+  ));
+
+  return !dErr
+    ? console.log('Updated datasets.json')
+    : console.error(err);
+};
+
+const checkHref = async (href) => {
+  const [err] = await intercept(axios.get(`${href}/metrics`, {
+    timeout: 500
+  }));
+
+  return !!err;
+};
+
+const inspectContainer = async ({ Id }) => {
+  const { container, meta } = await getContainer(Id);
+  const hrefs = await getHrefs(meta);
+  const serviceName = getServiceName(meta);
+  const service = services[serviceName];
+  const isUnreachable = await some(hrefs, checkHref);
+
+  const shouldRestart = !!(
+    isUnreachable || (
+      service.ports &&
+      !Object.keys(hrefs).length
+    )
+  );
+
+  console.log(`${serviceName} is ${isUnreachable ? 'unreachable' : 'reachable'}`);
+
+  if (!shouldRestart) {
+    return;
+  }
+
+  console.log(`\n\nIS GOING TO RESTART: ${serviceName}\n\n`);
+
+  const artilleryServiceName = serviceName.replace(/node/, 'artillery');
+  console.log(artilleryServiceName);
+  const { container: artillery } = await findContainer(artilleryServiceName);
+
+  restarts = (serviceName === 'telemetry')
+    ? restarts + 1
+    : restarts;
+
+  await parallel([
+    () => container.restart(),
+    () => artillery.restart()
+  ]);
+};
+
+const inspect = async () => {
+  const ps = await docker.listContainers();
+  await forEach(ps, inspectContainer);
+};
+
+// const handleError = async (p) => {
+//   const [err] = await intercept(p);
+//
+//   if (err) {
+//     console.error(err);
+//   }
+// }
+
+const tick = () => parallel({
+  inspect,
+  report
+});
+
+const check = () => !((new Date().getTime() - start) > window)
+  ? delay(interval)
+  : true;
+
+until(check, tick).then(() => {
+  console.log('done')
+}, (err) => {
+  console.error(err)
+});