statsd-grapher

<!DOCTYPE html> <html> <head> <title>utils.js</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <meta name="viewport" content="width=device-width, target-densitydpi=160dpi, initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <ul id="jump_to"> <li> <a class="large" href="javascript:void(0);">Jump To …</a> <a class="small" href="javascript:void(0);">+</a> <div id="jump_wrapper"> <div id="jump_page_wrapper"> <div id="jump_page"> <a class="source" href="server.html"> server.js </a> <a class="source" href="utils.html"> utils.js </a> </div> </div> </li> </ul> <ul class="sections"> <li id="title"> <div class="annotation"> <h1>utils.js</h1> </div> </li> <li id="section-1"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-1">¶</a> </div> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> R = <span class="hljs-built_in">require</span>(<span class="hljs-string">'ramda'</span>) , S = <span class="hljs-built_in">require</span>(<span class="hljs-string">'sanctuary'</span>)</pre></div></div> </li> <li id="section-2"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-2">¶</a> </div> <p><code>log :: a -> a</code><br>Uses <code>R.tap</code> to print to console</p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> log = R.tap(x => <span class="hljs-built_in">console</span>.log(<span class="hljs-string">'log: '</span>, x))</pre></div></div> </li> <li id="section-3"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-3">¶</a> </div> <p><code>printLens :: Lens s a -> String</code><br>Prints <code>lensPath</code>/<code>lensProp</code> lenses</p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> printLens = lens => <span class="hljs-built_in">JSON</span>.stringify(R.set(lens, <span class="hljs-literal">true</span>, {}))</pre></div></div> </li> <li id="section-4"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-4">¶</a> </div> <p><code>toInt :: String -> Int</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> toInt = R.curryN(<span class="hljs-number">1</span>, <span class="hljs-built_in">parseInt</span>)</pre></div></div> </li> <li id="section-5"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-5">¶</a> </div> <p><code>mLenses :: String -> Object -> [Lens s a]</code><br>Takes a metric type and the metrics, and returns lenses to all the keys in that metric</p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> mLenses = R.curry((type, metrics) => S.pipe([R.prop(type), R.keys, R.map(R.pipe(R.pair(type), R.lensPath))], metrics))</pre></div></div> </li> <li id="section-6"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-6">¶</a> </div> <p><code>_initStats :: Object -> [Lens s a] -> Object -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> _initStats = R.curry((object, mLenses, stats) => R.reduce((stats, mLens) => R.when(R.pipe(R.view(mLens), R.isNil), R.set(mLens, object))(stats), stats, mLenses))</pre></div></div> </li> <li id="section-7"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-7">¶</a> </div> <p><code>:: [Lens s a] -> Object -> Object</code> </p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> initStats = _initStats({ x: [], y: [] }) , initTimers = _initStats({ hour: [], x: [], y: [], error_y: { array: [], arrayminus: [] } })</pre></div></div> </li> <li id="section-8"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-8">¶</a> </div> <p><code>:: Lens s a => Lens s a</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> x = lens => R.compose(lens, R.lensProp(<span class="hljs-string">'x'</span>)) , y = lens => R.compose(lens, R.lensProp(<span class="hljs-string">'y'</span>)) , hour = lens => R.compose(lens, R.lensProp(<span class="hljs-string">'hour'</span>)) , store = lens => R.compose(lens, R.lensProp(<span class="hljs-string">'store'</span>)) , aplus = lens => R.compose(lens, R.lensPath([<span class="hljs-string">'error_y'</span>, <span class="hljs-string">'array'</span>])) , aminus = lens => R.compose(lens, R.lensPath([<span class="hljs-string">'error_y'</span>, <span class="hljs-string">'arrayminus'</span>]))</pre></div></div> </li> <li id="section-9"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-9">¶</a> </div> <p><code>setX :: Int -> Object -> [Lens s a] -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> setX = R.curry((timestamp, mLenses, stats) => R.reduce((stats, mLens) => R.over(x(mLens), R.append(timestamp), stats), stats, mLenses))</pre></div></div> </li> <li id="section-10"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-10">¶</a> </div> <p><code>setY :: String -> Object -> [Lens s a] -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> setY = R.curry((metrics, mLenses, stats) => R.reduce((stats, mLens) => { <span class="hljs-keyword">return</span> S.pipe([R.view(store(mLens)), R.isNil, R.not], metrics) ? R.over(y(mLens), R.concat(R.__, S.pipe([R.keys, R.map(toInt)], R.view(store(mLens), metrics))), stats) : R.over(y(mLens), R.append(R.view(mLens, metrics)), stats) }, stats, mLenses))</pre></div></div> </li> <li id="section-11"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-11">¶</a> </div> <p><code>setXY :: Object -> Int -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> setXY = R.curry((timestamp, metrics, stats) => { <span class="hljs-keyword">const</span> lenses = R.flatten([<span class="hljs-string">'counters'</span>, <span class="hljs-string">'counter_rates'</span>, <span class="hljs-string">'gauges'</span>].map(type => mLenses(type, metrics))) <span class="hljs-keyword">return</span> S.pipe([initStats(lenses), setX(timestamp, lenses), setY(metrics, lenses)], stats) })</pre></div></div> </li> <li id="section-12"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-12">¶</a> </div> <p><code>setSets :: String -> Object -> Object -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> setSets = R.curry((timestamp, metrics, stats) => { <span class="hljs-keyword">const</span> lenses = mLenses(<span class="hljs-string">'sets'</span>, metrics) <span class="hljs-keyword">return</span> R.reduce((stats, mLens) => { <span class="hljs-keyword">const</span> setCount = R.keys(R.view(store(mLens), metrics)).length <span class="hljs-keyword">return</span> S.pipe([ R.over(x(mLens), R.concat(R.__, R.repeat(timestamp, setCount))) , R.over(y(mLens), R.concat(R.__, S.pipe([R.keys, R.map(toInt)], R.view(store(mLens), metrics)))) ], stats) }, initStats(lenses, stats), lenses) })</pre></div></div> </li> <li id="section-13"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-13">¶</a> </div> <p><code>setTimersHour :: [Lenses s a] -> String -> Object -> Object -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> setTimersHour = R.curry((mLenses, timestamp, metrics, stats) => R.reduce((stats, mLens) => { <span class="hljs-keyword">const</span> timerHour = R.view(hour(mLens), stats) , lastY = R.compose(hour(mLens), R.lensIndex(timerHour.length - <span class="hljs-number">1</span>), R.lensProp(<span class="hljs-string">'y'</span>)) <span class="hljs-keyword">if</span> (R.not(R.isEmpty(timerHour)) && timestamp - R.last(timerHour).x < <span class="hljs-number">60</span> * <span class="hljs-number">1000</span>) <span class="hljs-keyword">return</span> R.over(lastY, R.concat(R.view(mLens, metrics)), stats) <span class="hljs-keyword">else</span> <span class="hljs-keyword">return</span> R.over(hour(mLens), R.append({ x: timestamp, y: R.view(mLens, metrics), name: <span class="hljs-keyword">new</span> <span class="hljs-built_in">Date</span>(timestamp).toLocaleString(), type: <span class="hljs-string">'box'</span>, boxmean: <span class="hljs-literal">true</span> }), stats) }, stats, mLenses))</pre></div></div> </li> <li id="section-14"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-14">¶</a> </div> <p><code>setTimersXY :: [Lenses s a] -> String -> Object -> Object -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> setTimersXY = R.curry((mLenses, timestamp, metrics, stats) => R.reduce((stats, mLens) => { <span class="hljs-keyword">const</span> mean = <span class="hljs-built_in">Math</span>.round(R.mean(R.view(mLens, metrics))) , plus = R.reduce(R.max, <span class="hljs-number">0</span>, R.view(mLens, metrics)) - mean , minus = mean - R.reduce(R.min, <span class="hljs-literal">Infinity</span>, R.view(mLens, metrics)) <span class="hljs-keyword">return</span> S.pipe([ R.over(x(mLens), R.append(timestamp)) , R.over(y(mLens), R.append(mean)) , R.over(aplus(mLens), R.append(plus)) , R.over(aminus(mLens), R.append(minus))], stats) }, stats, mLenses))</pre></div></div> </li> <li id="section-15"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-15">¶</a> </div> <p><code>setTimers :: Object -> Object -> Object -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> setTimers = R.curry((timestamp, metrics, stats) => { <span class="hljs-keyword">const</span> lenses = mLenses(<span class="hljs-string">'timers'</span>, metrics) <span class="hljs-keyword">return</span> S.pipe([ initTimers(lenses) , setTimersHour(lenses, timestamp, metrics) , setTimersXY(lenses, timestamp, metrics) ], stats) })</pre></div></div> </li> <li id="section-16"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-16">¶</a> </div> <p><code>setStats :: Object -> Object -> Object -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> setStats = R.curry((timestamp, metrics, stats) => S.pipe([ setXY(timestamp, metrics) , setSets(timestamp, metrics) , setTimers(timestamp, metrics) ], stats))</pre></div></div> </li> <li id="section-17"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-17">¶</a> </div> <p><code>testNs :: String -> String -> Boolean</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> testNs = R.curry((namespace, string) => R.test(<span class="hljs-keyword">new</span> <span class="hljs-built_in">RegExp</span>(<span class="hljs-string">`^<span class="hljs-subst">${namespace.replace(/\./g, '\\.')}</span>`</span>), string))</pre></div></div> </li> <li id="section-18"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-18">¶</a> </div> <p><code>pickNs :: String -> Object -> Object</code> </p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> pickNs = R.curry((namespace, stats) => R.ifElse(R.isArrayLike, R.filter(testNs(namespace)), R.pickBy(R.flip(testNs(namespace))))(stats))</pre></div></div> </li> <li id="section-19"> <div class="annotation"> <div class="pilwrap "> <a class="pilcrow" href="#section-19">¶</a> </div> <p><code>filterStats :: String -> String -> Object -> Object</code></p> </div> <div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> filterStats = R.curry((namespace, metric, stats) => { <span class="hljs-keyword">if</span> (metric === <span class="hljs-string">'all'</span>) <span class="hljs-keyword">return</span> R.map(pickNs(namespace), stats) <span class="hljs-keyword">else</span> <span class="hljs-keyword">return</span> pickNs(namespace, stats[metric]) }) <span class="hljs-built_in">module</span>.exports = { setTimersHour: setTimersHour, setTimersXY: setTimersXY, initTimers: initTimers, initStats: initStats, setTimers: setTimers, setStats: setStats, setSets: setSets, setXY: setXY, setX: setX, setY: setY, mLenses: mLenses, filterStats: filterStats, pickNs: pickNs, testNs: testNs, printLens: printLens, toInt: toInt, log: log }</pre></div></div> </li> </ul> </div> </body> </html>