45bb786147
* log to sentry if upstream service responds with 429 * allow services to decide which error(s) to log, default to 429 * don't log 429s from endpoint or dynamic badges * supress 429s from uptime robot badges * supress 429s from weblate if not calling default server * cache opencollective badges for longer * cache discord badges for longer * cache github workflow badges for longer
104 lines
3.6 KiB
JavaScript
104 lines
3.6 KiB
JavaScript
/**
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* @module
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*/
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// See available emoji at http://emoji.muan.co/
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import emojic from 'emojic'
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import BaseService from './base.js'
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import trace from './trace.js'
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import { InvalidResponse } from './errors.js'
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const defaultValueMatcher = />([^<>]+)<\/text><\/g>/
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const leadingWhitespace = /(?:\r\n\s*|\r\s*|\n\s*)/g
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/**
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* Services which scrape data from another SVG badge
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* should extend BaseSvgScrapingService
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*
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* @abstract
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*/
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class BaseSvgScrapingService extends BaseService {
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/**
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* Extract a value from SVG
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*
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* @param {string} svg SVG to parse
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* @param {RegExp} [valueMatcher=defaultValueMatcher]
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* RegExp to match the value we want to parse from the SVG
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* @returns {string} Matched value
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*/
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static valueFromSvgBadge(svg, valueMatcher = defaultValueMatcher) {
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if (typeof svg !== 'string') {
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throw new TypeError('Parameter should be a string')
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}
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const stripped = svg.replace(leadingWhitespace, '')
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const match = valueMatcher.exec(stripped)
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if (match) {
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return match[1]
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} else {
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throw new InvalidResponse({
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prettyMessage: 'unparseable svg response',
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underlyingError: Error(`Can't get value from SVG:\n${svg}`),
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})
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}
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}
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/**
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* Request data from an endpoint serving SVG,
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* parse a value from it and validate against a schema
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*
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* @param {object} attrs Refer to individual attrs
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* @param {Joi} attrs.schema Joi schema to validate the response against
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* @param {RegExp} attrs.valueMatcher
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* RegExp to match the value we want to parse from the SVG
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* @param {string} attrs.url URL to request
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* @param {object} [attrs.options={}] Options to pass to got. See
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* [documentation](https://github.com/sindresorhus/got/blob/main/documentation/2-options.md)
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* @param {object} [attrs.httpErrors={}] Key-value map of status codes
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* and custom error messages e.g: `{ 404: 'package not found' }`.
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* This can be used to extend or override the
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* [default](https://github.com/badges/shields/blob/master/core/base-service/check-error-response.js#L5)
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* @param {object} [attrs.systemErrors={}] Key-value map of got network exception codes
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* and an object of params to pass when we construct an Inaccessible exception object
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* e.g: `{ ECONNRESET: { prettyMessage: 'connection reset' } }`.
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* See {@link https://github.com/sindresorhus/got/blob/main/documentation/7-retry.md#errorcodes got error codes}
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* for allowed keys
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* and {@link module:core/base-service/errors~RuntimeErrorProps} for allowed values
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* @param {number[]} [attrs.logErrors=[429]] An array of http error codes
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* that will be logged (to sentry, if configured).
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* @returns {object} Parsed response
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* @see https://github.com/sindresorhus/got/blob/main/documentation/2-options.md
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*/
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async _requestSvg({
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schema,
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valueMatcher,
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url,
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options = {},
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httpErrors = {},
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systemErrors = {},
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logErrors = [429],
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}) {
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const logTrace = (...args) => trace.logTrace('fetch', ...args)
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const mergedOptions = {
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...{ headers: { Accept: 'image/svg+xml' } },
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...options,
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}
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const { buffer } = await this._request({
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url,
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options: mergedOptions,
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httpErrors,
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systemErrors,
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logErrors,
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})
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logTrace(emojic.dart, 'Response SVG', buffer)
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const data = {
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message: this.constructor.valueFromSvgBadge(buffer, valueMatcher),
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}
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logTrace(emojic.dart, 'Response SVG (before validation)', data, {
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deep: true,
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})
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return this.constructor._validate(data, schema)
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}
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}
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export default BaseSvgScrapingService
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