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bumper.js
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bumper.js
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'use strict'
require('./typedefs')
const __ = require('lodash')
const cpExec = require('child_process').exec
const prependFile = require('prepend-file')
const Promise = require('promise')
const versiony = require('versiony')
const path = require('path')
const fs = require('fs')
const pkgJson = require('../package.json')
// Compliance implementation
let dependencies = require('./compliance/dependencies')
// using let so stuff can be rewired in the test
let exec = Promise.denodeify(cpExec)
let prepend = Promise.denodeify(prependFile)
let readFile = Promise.denodeify(fs.readFile)
let writeFile = Promise.denodeify(fs.writeFile)
const logger = require('./logger')
const utils = require('./utils')
/**
* Adds the given filename to info.modifiedFiles if it doesn't already exist
* @param {PrInfo} info - the info for the PR
* @param {String[]} info.modifiedFiles - the list of modified files so far
* @param {String} filename - the filename to add to info.modifiedFiles if it's not already there
*/
function addModifiedFile (info, filename) {
if (info.modifiedFiles.indexOf(filename) === -1) {
info.modifiedFiles.push(filename)
}
}
/**
* Perform the patch bump, either using .patch() or .preRelease() (the latter if there's a pre-release tag)
* @param {*} v - the versiony instance
*/
function performPatch (v) {
if (v.model.hasPreRelease()) {
v.preRelease()
} else {
v.patch()
}
}
class Cancel {
constructor (message) {
this.message = message
}
}
/**
* Interacts with a Vcs to achieive a version bump
* @class
*/
class Bumper {
// = Public Methods ===================================================================
/**
* @param {Object} params - params obj
* @param {Config} params.config - the bumper config object
* @param {Vcs} params.vcs - the vcs instance to use
* @param {Ci} params.ci - the ci instance to use
*/
constructor (params) {
this.config = params.config
this.vcs = params.vcs
this.ci = params.ci
}
/**
* Bump the version based on the last merged PR's version-bump comment
* @param {Object} options the cli options
* @returns {Promise} a promise resolved with the results of the push
*/
bump () {
if (__.get(this.config, 'computed.ci.isPr')) {
logger.log('Not a merge build, skipping bump')
return Promise.resolve()
}
return this.ci.getLastCommitMsg()
.then((commitMessage) => {
if (commitMessage.startsWith(`[${pkgJson.name}]`)) {
throw new Cancel(`Skipping bump on ${pkgJson.name} commit.`)
}
return Promise.resolve()
})
.then(() => {
return this._getMergedPrInfo()
})
.then((info) => {
return this._maybeBumpVersion(info, 'package.json')
})
.then((info) => {
if (fs.existsSync('package-lock.json')) {
return this._maybeBumpVersion(info, 'package-lock.json')
}
return info
})
.then((info) => {
return this._maybePrependChangelog(info)
})
.then((info) => {
return this._maybeGenerateDependencySnapshot(info)
})
.then((info) => {
return this._maybeGenerateDependencyComplianceReport(info)
})
.then((info) => {
return this._maybeUpdateBaselineCoverage(info)
})
.then((info) => {
return this._maybeCommitChanges(info)
})
.then((info) => {
return this._maybeCreateTag(info)
})
.then((info) => {
return this._maybePushChanges(info)
})
.then((info) => {
return this._maybeLogChanges(info)
})
}
/**
* Check a PR for a version-bump comment
* @returns {Promise} a promise resolved when complete or rejected on error
*/
check () {
if (!this.config.computed.ci.isPr) {
logger.log('Not a PR build, skipping check')
return Promise.resolve()
}
return this._getOpenPrInfo()
.then((info) => {
logger.log(`Found a ${info.scope} bump for the current PR`)
})
}
/**
* Check a build to see if coverage decreased
* @returns {Promise} a promise resolved when complete or rejected on error
*/
checkCoverage () {
const link = 'https://github.com/ciena-blueplanet/pr-bumper#featurescoverage'
if (!this.config.isEnabled('coverage')) {
const msg = `Code coverage feature not enabled!\nSee ${link} for configuration info.`
return utils.maybePostComment(this.config, this.vcs, msg, true)
.then(() => {
return Promise.reject(msg)
})
}
const base = this.config.computed.baselineCoverage
if (!__.isNumber(base)) {
const msg = `Baseline coverage is not a number!\nSee ${link} for configuration info.`
return utils.maybePostComment(this.config, this.vcs, msg, true)
.then(() => {
return Promise.reject(msg)
})
}
const pct = utils.getCurrentCoverage(this.config)
if (pct < 0) {
const msg = `No current coverage info found!\nSee ${link} for configuration info.`
return utils.maybePostComment(this.config, this.vcs, msg, true)
.then(() => {
return Promise.reject(msg)
})
}
if (base > pct) {
const diffStr = (base - pct).toFixed(2)
const baseStr = base.toFixed(2)
const pctStr = pct.toFixed(2)
const msg = `Code Coverage: \`${pctStr}%\` (dropped \`${diffStr}%\` from \`${baseStr}%\`)`
return utils.maybePostComment(this.config, this.vcs, msg)
.then(() => {
return Promise.reject(msg)
})
}
const msg = this._getCoverageMsg(base, pct)
logger.log(msg, true)
return utils.maybePostComment(this.config, this.vcs, msg)
}
// = Private Methods ==================================================================
/**
* Compute the log message to tell users whether coverage went up or stayed the same
* @param {Number} base - the base coverage percentage
* @param {Number} pct - the current coverage percentage
* @returns {String} the message to log to the user explaining what happened with coverage
*/
_getCoverageMsg (base, pct) {
const pctStr = pct.toFixed(2)
const baseStr = base.toFixed(2)
if (pct > base) {
const diffStr = (pct - base).toFixed(2)
return `Code Coverage: \`${pctStr}%\` (increased \`${diffStr}%\` from \`${baseStr}%\`)`
} else {
return `Code Coverage: \`${baseStr}%\` (no change)`
}
}
/**
* Grab the most recent PR
* @returns {PrPromise} a promise resolved with the most recent PR
*/
_getLastPr () {
return exec('git log -10 --oneline').then((stdout) => {
// the --oneline format for `git log` puts each commit on a single line, with the hash and then
// the commit message, so we first split on \n to get an array of commits
const commits = stdout.split('\n')
// The commit that represents the merging of the PR will include the text 'pull request #' so
// we find that one
const mergeCommit = __.find(commits, (commit) => {
return commit.match('pull request #') !== null
})
// Get the number from the PR commit
const prNumber = mergeCommit.match(/pull request #(\d*)/)[1]
logger.log(`Fetching PR [${prNumber}]`)
return this.vcs.getPr(prNumber)
})
}
/**
* Get the PR scope for the current (merged) pull request
* @returns {Promise} a promise - resolved with PR info (changelog and scope) or rejected on error
*/
_getMergedPrInfo () {
return this._getLastPr()
.then((pr) => {
let maxScope = 'major'
if (this.config.isEnabled('maxScope')) {
maxScope = this.config.features.maxScope.value
}
const scope = utils.getScopeForPr(pr, maxScope)
const getChangelog = this.config.isEnabled('changelog') && scope !== 'none'
return {
changelog: getChangelog ? utils.getChangelogForPr(pr) : '',
modifiedFiles: [],
number: pr.number,
scope,
url: pr.url
}
})
}
/**
* Get the pr scope for the current (open) pull request
* @returns {Promise} a promise - resolved with PR info (changelog and scope) or rejected on error
*/
_getOpenPrInfo () {
const vcs = this.vcs
return vcs.getPr(this.config.computed.ci.prNumber)
.then((pr) => {
let scope
return utils.maybePostCommentOnError(this.config, this.vcs, () => {
let maxScope = 'major'
if (this.config.isEnabled('maxScope')) {
maxScope = this.config.features.maxScope.value
}
scope = utils.getScopeForPr(pr, maxScope)
return {pr, scope}
})
})
.then((data) => {
const pr = data.pr
const scope = data.scope
const getChangelog = this.config.isEnabled('changelog') && scope !== 'none'
let changelog = ''
if (getChangelog) {
return utils.maybePostCommentOnError(this.config, this.vcs, () => {
changelog = utils.getChangelogForPr(pr)
return {changelog, number: pr.number, scope, url: pr.url}
})
}
return Promise.resolve({changelog, number: pr.number, scope, url: pr.url})
})
}
/**
* Maybe bump the version in package.json with the given scope (if it's not "none")
* @param {PrInfo} info - the pr info
* @param {String} pkgJsonFile - the full file path to the package.json to bump
* @returns {PrInfo} the pr info object passed in
*/
_maybeBumpVersion (info, pkgJsonFile) {
if (info.scope === 'none') {
return info
}
const v = versiony.from(pkgJsonFile)
switch (info.scope) {
case 'patch':
performPatch(v)
break
case 'minor':
v.newMinor()
break
case 'major':
v.newMajor()
break
default:
throw new Error(`Invalid scope [${info.scope}]`)
}
const versionInfo = v.to(pkgJsonFile).end({quiet: true})
info.version = versionInfo.version
addModifiedFile(info, pkgJsonFile)
return info
}
/**
* Commit the changed files that were modified by pr-bumper
* @param {PrInfo} info - the info for the PR being bumped
* @returns {Promise} - a promise resolved with the results of the git commands
*/
_maybeCommitChanges (info) {
if (info.modifiedFiles.length === 0) {
logger.log('Skipping commit because no files were changed.')
return Promise.resolve(info)
}
const buildNumber = this.config.computed.ci.buildNumber
return this.ci.setupGitEnv()
.then(() => {
return this.ci.add(info.modifiedFiles)
})
.then(() => {
// Currently there are only two reasons we'll have a commit 1) we have a "none" bump with coverage
// change, or 2) we have a legit bump commit
let msg = `Automated version bump to ${info.version}`
if (info.scope === 'none') {
msg = 'Automated code coverage update'
}
return this.ci.commit(`[${pkgJson.name}] ${msg}`, `From CI build ${buildNumber}`)
.then(() => {
return info
})
})
}
/**
* Maybe create a tag based on the current version
* @param {PrInfo} info - the info for the PR being bumped
* @returns {Promise} - a promise resolved with the results of the git commands
*/
_maybeCreateTag (info) {
if (info.scope === 'none') {
logger.log('Skipping tag creation because of "none" scope.')
return Promise.resolve(info)
}
const buildNumber = this.config.computed.ci.buildNumber
return this.ci.tag(`v${info.version}`, `Generated tag from CI build ${buildNumber}`)
.then(() => {
return info
})
}
/**
* process a dependency report
* @param {PrInfo} info - the info for the PR being bumped
* @returns {Promise} a Promise
*/
_maybeGenerateDependencyComplianceReport (info) {
if (!this.config.isEnabled('compliance')) {
logger.log('Skipping generating dependency compliance report because of config option.')
return Promise.resolve(info)
}
if (info.scope === 'none') {
logger.log('Skipping generating dependency compliance report because of "none" scope.')
return Promise.resolve(info)
}
const outputPath = __.get(this.config, 'features.compliance.output.directory')
const cwd = process.cwd()
return dependencies.run(cwd, path.join(cwd, outputPath), this.config)
.then(() => {
addModifiedFile(info, outputPath)
return info
})
}
/**
* Maybe generate a dependency snapshot file by using `npm shrinkwrap`
* TODO: do we want to handle projects that include npm-shrinkwrap.json?
* @param {PrInfo} info - the info for the PR being bumped
* @returns {Promise} a promise resolved when operation completes
*/
_maybeGenerateDependencySnapshot (info) {
// We need to do the prune b/c of the following issue with npm-shrinkwrap
// https://github.com/SaltwaterC/aws2js/issues/58, apparently one of our deps
// installs things w/o having them in package.json, causing npm shrinkwrap to barf
if (!this.config.isEnabled('dependencies')) {
logger.log('Skipping generating dependency snapshot because of config option.')
return Promise.resolve(info)
}
if (info.scope === 'none') {
logger.log('Skipping generating dependency snapshot because of "none" scope.')
return Promise.resolve(info)
}
const snapshotFile = __.get(this.config, 'features.dependencies.snapshotFile')
return exec('npm prune')
.then(() => {
return exec('npm shrinkwrap --dev')
})
.then(() => {
return exec(`mv npm-shrinkwrap.json ${snapshotFile}`)
})
.then(() => {
addModifiedFile(info, snapshotFile)
return info
})
}
/**
* Maybe log changes to a file
* @param {PrInfo} info - the info for the PR being bumped
* @returns {Promise} - a promise resolved with the results of the git commands
*/
_maybeLogChanges (info) {
if (!this.config.isEnabled('logging')) {
logger.log('Skipping logging because of config option.')
return Promise.resolve(info)
}
const logInfo = __.cloneDeep(info)
delete logInfo.modifiedFiles
const filename = this.config.features.logging.file
return writeFile(filename, JSON.stringify(logInfo, null, 2))
.then(() => {
return info
})
}
/**
* Maybe prepend the changelog text from the PrInfo into the CHANGELOG.md file (unless there was no bump)
* @param {PrInfo} info - the pr info
* @returns {Promise} - a promise resolved when changelog has been prepended
*/
_maybePrependChangelog (info) {
if (!this.config.isEnabled('changelog')) {
logger.log('Skipping prepending changelog because of config option.')
return Promise.resolve(info)
}
if (info.scope === 'none') {
logger.log('Skipping prepending changelog because of "none" scope.')
return Promise.resolve(info)
}
const now = new Date()
const dateString = now.toISOString().split('T').slice(0, 1).join('')
const data = `# ${info.version} (${dateString})\n${info.changelog}\n\n`
const filename = this.config.features.changelog.file
return prepend(filename, data)
.then(() => {
addModifiedFile(info, filename)
return info
})
}
/**
* Maybe push changes back to repo
* @param {PrInfo} info - the info for the PR being bumped
* @returns {Promise} - a promise resolved with the results of the git commands
*/
_maybePushChanges (info) {
if (info.modifiedFiles.length === 0) {
logger.log('Skipping push because nothing changed.')
return Promise.resolve(info)
}
return this.ci.push(this.vcs)
.then(() => {
return info
})
}
/**
* Maybe update the code coverage in package.json
* @param {PrInfo} info - the info for the PR being bumped
* @returns {Promise} a Promise
**/
_maybeUpdateBaselineCoverage (info) {
if (!this.config.isEnabled('coverage')) {
logger.log('Skipping updating baseline code coverage because of config option.')
return Promise.resolve(info)
}
const link = 'https://github.com/ciena-blueplanet/pr-bumper#featurescoverage'
const pct = utils.getCurrentCoverage(this.config)
if (pct < 0) {
const msg = `No current coverage info found!\nSee ${link} for configuration info.`
return Promise.reject(msg)
}
const pkgJsonPath = path.join(process.cwd(), 'package.json')
return readFile(pkgJsonPath, 'utf8')
.then((contents) => {
const pkgJsonContents = JSON.parse(contents)
// We want to write out the coverage info, even if it didn't exist yet (@job13er 2017-06-19)
__.set(pkgJsonContents, 'pr-bumper.coverage', pct)
return JSON.stringify(pkgJsonContents, null, 2)
})
.then((data) => {
return writeFile(pkgJsonPath, data)
})
.then(() => {
addModifiedFile(info, 'package.json')
return info
})
}
}
Bumper.Cancel = Cancel
module.exports = Bumper