99 lines
3.2 KiB
JavaScript
99 lines
3.2 KiB
JavaScript
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'use strict'
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const fs = require('graceful-fs')
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const path = require('path')
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const helper = require('./helper')
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const log = require('./logger').create('plugin')
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const IGNORED_PACKAGES = ['karma-cli', 'karma-runner.github.com']
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function resolve (plugins, emitter) {
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const modules = []
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function requirePlugin (name) {
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log.debug(`Loading plugin ${name}.`)
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try {
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modules.push(require(name))
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} catch (e) {
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if (e.code === 'MODULE_NOT_FOUND' && e.message.includes(name)) {
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log.error(`Cannot find plugin "${name}".\n Did you forget to install it?\n npm install ${name} --save-dev`)
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} else {
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log.error(`Error during loading "${name}" plugin:\n ${e.message}`)
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}
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emitter.emit('load_error', 'plug_in', name)
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}
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}
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plugins.forEach(function (plugin) {
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if (helper.isString(plugin)) {
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if (!plugin.includes('*')) {
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requirePlugin(plugin)
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return
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}
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const pluginDirectory = path.normalize(path.join(__dirname, '/../..'))
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const regexp = new RegExp(`^${plugin.replace(/\*/g, '.*').replace(/\//g, '[/\\\\]')}`)
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log.debug(`Loading ${plugin} from ${pluginDirectory}`)
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fs.readdirSync(pluginDirectory)
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.map((e) => {
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const modulePath = path.join(pluginDirectory, e)
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if (e[0] === '@') {
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return fs.readdirSync(modulePath).map((e) => path.join(modulePath, e))
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}
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return modulePath
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})
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.reduce((a, x) => a.concat(x), [])
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.map((modulePath) => path.relative(pluginDirectory, modulePath))
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.filter((moduleName) => !IGNORED_PACKAGES.includes(moduleName) && regexp.test(moduleName))
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.forEach((pluginName) => requirePlugin(path.join(pluginDirectory, pluginName)))
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} else if (helper.isObject(plugin)) {
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log.debug(`Loading inline plugin defining ${Object.keys(plugin).join(', ')}.`)
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modules.push(plugin)
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} else {
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log.error(`Invalid plugin ${plugin}`)
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emitter.emit('load_error', 'plug_in', plugin)
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}
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})
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return modules
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}
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/**
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Create a function to handle errors in plugin loading.
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@param {Object} injector, the dict of dependency injection objects.
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@return function closed over injector, which reports errors.
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*/
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function createInstantiatePlugin (injector) {
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const emitter = injector.get('emitter')
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// Cache to avoid report errors multiple times per plugin.
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const pluginInstances = new Map()
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return function instantiatePlugin (kind, name) {
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if (pluginInstances.has(name)) {
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return pluginInstances.get(name)
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}
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let p
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try {
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p = injector.get(`${kind}:${name}`)
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if (!p) {
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log.error(`Failed to instantiate ${kind} ${name}`)
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emitter.emit('load_error', kind, name)
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}
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} catch (e) {
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if (e.message.includes(`No provider for "${kind}:${name}"`)) {
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log.error(`Cannot load "${name}", it is not registered!\n Perhaps you are missing some plugin?`)
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} else {
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log.error(`Cannot load "${name}"!\n ` + e.stack)
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}
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emitter.emit('load_error', kind, name)
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}
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pluginInstances.set(name, p, `${kind}:${name}`)
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return p
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}
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}
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createInstantiatePlugin.$inject = ['injector']
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module.exports = { resolve, createInstantiatePlugin }
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