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index.js
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index.js
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"use strict";
const express = require("express");
const path = require("path");
const http = require("http");
const bodyParser = require("body-parser");
const mkdir = require("mkdirp");
const chalk = require("chalk");
const _ = require("lodash");
const Handlebars = require("handlebars");
const GitHubApi = require("github");
const exeq = require("exeq");
const del = require("del");
function fatal(msg) {
console.error(chalk.red.bold("FATAL:", msg));
process.exit(1);
}
const { REPO_OWNER, REPO_NAME, SUITE_FILENAME, GITHUB_TOKEN } = process.env;
if (!GITHUB_TOKEN)
fatal("Missing github access token! Please generate a token on https://github.com/settings/tokens and set to the GITHUB_TOKEN environment variable!");
if (!REPO_OWNER)
fatal("Missing repository owner! Please set REPO_OWNER environment variable!");
if (!REPO_NAME)
fatal("Missing repository name! Please set REPO_NAME environment variable!");
if (!SUITE_FILENAME)
fatal("Missing benchmarkify suite filename! Please set SUITE_FILENAME environment variable!");
const github = new GitHubApi({
debug: false
});
github.authenticate({
type: "token",
token: GITHUB_TOKEN
});
// Create express app
const app = express();
app.set("showStackError", true);
app.use(bodyParser.urlencoded({
extended: true
}));
app.use(bodyParser.json());
app.post("/github-hook", (req, res) => {
//console.log(req.headers);
const event = req.headers["x-github-event"];
if (event == "pull_request") {
processPullRequest(req.body, req.headers);
}
res.sendStatus(200);
});
const port = process.env.PORT || 4278;
const ip = process.env.IP || "127.0.0.1";
app.listen(port, ip, function() {
console.log("");
console.log(chalk.green.bold("*** Web hook server is running on"));
console.log(chalk.green.bold("*** "));
console.log(chalk.white.bold(`*** http://${ip}:${port}/github-hook`));
console.log(chalk.green.bold("*** "));
console.log(chalk.green.bold("*** Set this URL in Webhooks in Github settings and enable the 'Pull request' events!"));
console.log(chalk.green.bold(""));
});
function processPullRequest(payload) {
console.log("New pull-request event received!\n");
const prNumber = payload.number;
if (["opened", "synchronize"].indexOf(payload.action) !== -1) {
console.log(chalk.white.bold(`New PR opened! ID: ${prNumber}, Name: ${payload.pull_request.title}`));
const headGitUrl = payload.pull_request.head.repo.clone_url; // Repo of PR
const headGitBranch = payload.pull_request.head.ref; // Branch of PR
const baseGitUrl = payload.pull_request.base.repo.clone_url; // Base repo
const baseGitBranch = payload.pull_request.base.ref; // Base repo branch
console.log("Base: ", chalk.white.bold(baseGitUrl), " Branch: ", chalk.magenta.bold(baseGitBranch));
console.log(" PR: ", chalk.white.bold(headGitUrl), " Branch: ", chalk.magenta.bold(headGitBranch));
let workID = Math.random().toString(36).replace(/[^a-z]+/g, "");
console.log("Temp folder: " + workID + "\n");
let folder = "./tmp/" + workID;
mkdir.sync(folder);
let masterFolder = path.join(folder, "master");
mkdir.sync(masterFolder);
let prFolder = path.join(folder, "pr");
mkdir.sync(prFolder);
return runBenchmark(baseGitUrl, baseGitBranch, masterFolder).then(masterResult => {
return runBenchmark(headGitUrl, headGitBranch, prFolder).then(prResult => {
return compareResults(masterResult, prResult);
});
})
.then(compared => {
// console.log("Compare result:", compared);
// Create comment on PR
return addResultCommentToPR(prNumber, compared);
})
.then(() => {
console.log(chalk.green.bold("Done!\n\n"));
})
.catch(err => console.error(err))
.then(() => {
// Delete tmp folder
return del([folder]);
});
}
return Promise.resolve();
}
function runBenchmark(gitUrl, branch, folder) {
return Promise.resolve().then(() => {
return exeq("git clone " + gitUrl + " " + folder, "cd " + folder, "git checkout " + branch, "npm i --quiet").then(msgs => {
return require(path.join(__dirname, folder, SUITE_FILENAME));
});
});
}
function formatNum(num, decimals = 0, addSign = false) {
let res = Number(num.toFixed(decimals)).toLocaleString();
if (addSign && num > 0.0)
res = "+" + res;
return res;
}
function compareResults(masterResult, prResult) {
let comparedResult = {
name: masterResult.name,
suites: [],
masterJSON: JSON.stringify(masterResult, null, 2),
prJSON: JSON.stringify(prResult, null, 2)
};
const suiteNames = _.uniq([].concat(masterResult.suites, prResult.suites).map(suite => suite.name));
suiteNames.forEach(suiteName => {
const mSuite = masterResult.suites.find(item => item.name == suiteName);
const pSuite = prResult.suites.find(item => item.name == suiteName);
let suiteRes = {
name: suiteName,
tests: []
};
const testNames = _.uniq([].concat(mSuite ? mSuite.tests : [], pSuite ? pSuite.tests : []).map(test => test.name));
testNames.forEach(testName => {
const mTest = mSuite && mSuite.tests.find(item => item.name == testName);
const pTest = mSuite && pSuite.tests.find(item => item.name == testName);
const masterRps = mTest && mTest.stat ? mTest.stat.rps : null;
const prRps = pTest && mTest.stat ? pTest.stat.rps : null;
let testCompare = {
name: testName,
skipped: mTest.skipped && pTest.skipped,
//masterResult: mTest,
//prResult: pTest,
masterRps: masterRps ? formatNum(masterRps) : "[SKIP]",
prRps: prRps ? formatNum(prRps) : "[SKIP]"
};
if (masterRps && prRps) {
const percent = ((prRps - masterRps) * 100.0) / masterRps;
const percentage = formatNum(percent, 0, true);
testCompare.diff = formatNum(prRps - masterRps, 0, true);
testCompare.percentage = percentage + "%";
testCompare.badge = `https://img.shields.io/badge/perf-${percentage.replace("-", "--")}%25-${getBadgeColor(percent)}.svg`;
} else {
testCompare.diff = "-";
testCompare.percentage = "Skip";
testCompare.badge = "https://img.shields.io/badge/perf-skip-lightgrey.svg";
}
suiteRes.tests.push(testCompare);
});
comparedResult.suites.push(suiteRes);
});
return Promise.resolve(comparedResult);
}
function getBadgeColor(value) {
if (value > 20) return "brightgreen";
if (value > 5) return "green";
if (value < 5) return "orange";
if (value < 20) return "red";
return "yellow";
}
const commentTemplate = Handlebars.compile(`
# :checkered_flag: Benchmark results
## :memo: {{name}}
{{#each suites}}
### :zap: Suite: {{name}}
| Test | Master | PR | Diff | % |
| ---- | ------ | -- | ---- | - |
{{#each tests}}
|**{{name}}**| \`{{masterRps}}\` | \`{{prRps}}\` | \`{{diff}}\` | [![Performance: {{percentage}}]({{badge}})]() |
{{/each}}
{{/each}}
{{#if masterJSON}}
<details>
<summary>Master detailed results</summary>
<pre>
{{masterJSON}}
</pre>
</details>
{{/if}}
{{#if prJSON}}
<details>
<summary>PR detailed results</summary>
<pre>
{{prJSON}}
</pre>
</details>
{{/if}}
`);
function addResultCommentToPR(number, result) {
return github.issues.createComment({
owner: REPO_OWNER,
repo: REPO_NAME,
number,
body: commentTemplate(result)
}).then(() => {
console.info(chalk.yellow.bold(`Result posted successfully to https://github.com/${REPO_OWNER}/${REPO_NAME}/pull/${number}`));
});
}