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shields/core_server_server.js.html
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<h1 class="page-title">Source: core/server/server.js</h1>
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<pre class="prettyprint source linenums"><code>/**
* @module
*/
import path from 'path'
import url, { fileURLToPath } from 'url'
import { bootstrap } from 'global-agent'
import cloudflareMiddleware from 'cloudflare-middleware'
import Camp from '@shields_io/camp'
import originalJoi from 'joi'
import makeBadge from '../../badge-maker/lib/make-badge.js'
import GithubConstellation from '../../services/github/github-constellation.js'
import LibrariesIoConstellation from '../../services/librariesio/librariesio-constellation.js'
import { loadServiceClasses } from '../base-service/loader.js'
import { makeSend } from '../base-service/legacy-result-sender.js'
import { handleRequest } from '../base-service/legacy-request-handler.js'
import { clearResourceCache } from '../base-service/resource-cache.js'
import { rasterRedirectUrl } from '../badge-urls/make-badge-url.js'
import {
fileSize,
nonNegativeInteger,
optionalUrl,
url as requiredUrl,
} from '../../services/validators.js'
import log from './log.js'
import PrometheusMetrics from './prometheus-metrics.js'
import InfluxMetrics from './influx-metrics.js'
const { URL } = url
const Joi = originalJoi
.extend(base => ({
type: 'arrayFromString',
base: base.array(),
coerce: (value, state, options) => ({
value: typeof value === 'string' ? value.split(' ') : value,
}),
}))
.extend(base => ({
type: 'string',
base: base.string(),
messages: {
'string.origin':
'needs to be an origin string, e.g. https://host.domain with optional port and no trailing slash',
},
rules: {
origin: {
validate(value, helpers) {
let origin
try {
;({ origin } = new URL(value))
} catch (e) {}
if (origin !== undefined &amp;&amp; origin === value) {
return value
} else {
return helpers.error('string.origin')
}
},
},
},
}))
const origins = Joi.arrayFromString().items(Joi.string().origin())
const defaultService = Joi.object({ authorizedOrigins: origins }).default({
authorizedOrigins: [],
})
const publicConfigSchema = Joi.object({
bind: {
port: Joi.alternatives().try(
Joi.number().port(),
Joi.string().pattern(/^\\\\\.\\pipe\\.+$/),
),
address: Joi.alternatives().try(
Joi.string().ip().required(),
Joi.string().hostname().required(),
),
},
metrics: {
prometheus: {
enabled: Joi.boolean().required(),
endpointEnabled: Joi.boolean().required(),
},
influx: {
enabled: Joi.boolean().required(),
url: Joi.string()
.uri()
.when('enabled', { is: true, then: Joi.required() }),
timeoutMilliseconds: Joi.number()
.integer()
.min(1)
.when('enabled', { is: true, then: Joi.required() }),
intervalSeconds: Joi.number().integer().min(1).when('enabled', {
is: true,
then: Joi.required(),
}),
instanceIdFrom: Joi.string()
.equal('hostname', 'env-var', 'random')
.when('enabled', { is: true, then: Joi.required() }),
instanceIdEnvVarName: Joi.string().when('instanceIdFrom', {
is: 'env-var',
then: Joi.required(),
}),
envLabel: Joi.string().when('enabled', {
is: true,
then: Joi.required(),
}),
hostnameAliases: Joi.object(),
},
},
ssl: {
isSecure: Joi.boolean().required(),
key: Joi.string(),
cert: Joi.string(),
},
redirectUrl: optionalUrl,
rasterUrl: optionalUrl,
cors: {
// This doesn't actually do anything
// TODO: maybe remove in future?
// https://github.com/badges/shields/pull/8311#discussion_r945337530
allowedOrigin: Joi.array().items(optionalUrl).required(),
},
services: Joi.object({
bitbucketServer: defaultService,
drone: defaultService,
github: {
baseUri: requiredUrl,
debug: {
enabled: Joi.boolean().required(),
intervalSeconds: Joi.number().integer().min(1).required(),
},
restApiVersion: Joi.date().raw().required(),
},
gitea: defaultService,
gitlab: defaultService,
jira: defaultService,
jenkins: Joi.object({
authorizedOrigins: origins,
requireStrictSsl: Joi.boolean(),
requireStrictSslToAuthenticate: Joi.boolean(),
}).default({ authorizedOrigins: [] }),
nexus: defaultService,
npm: defaultService,
obs: defaultService,
pypi: {
baseUri: requiredUrl,
},
sonar: defaultService,
teamcity: defaultService,
weblate: defaultService,
trace: Joi.boolean().required(),
}).required(),
cacheHeaders: { defaultCacheLengthSeconds: nonNegativeInteger },
handleInternalErrors: Joi.boolean().required(),
fetchLimit: fileSize,
userAgentBase: Joi.string().required(),
requestTimeoutSeconds: nonNegativeInteger,
requestTimeoutMaxAgeSeconds: nonNegativeInteger,
documentRoot: Joi.string().default(
path.resolve(
path.dirname(fileURLToPath(import.meta.url)),
'..',
'..',
'public',
),
),
requireCloudflare: Joi.boolean().required(),
}).required()
const privateConfigSchema = Joi.object({
azure_devops_token: Joi.string(),
curseforge_api_key: Joi.string(),
discord_bot_token: Joi.string(),
dockerhub_username: Joi.string(),
dockerhub_pat: Joi.string(),
drone_token: Joi.string(),
gh_client_id: Joi.string(),
gh_client_secret: Joi.string(),
gh_token: Joi.string(),
gitea_token: Joi.string(),
gitlab_token: Joi.string(),
jenkins_user: Joi.string(),
jenkins_pass: Joi.string(),
jira_user: Joi.string(),
jira_pass: Joi.string(),
bitbucket_username: Joi.string(),
bitbucket_password: Joi.string(),
bitbucket_server_username: Joi.string(),
bitbucket_server_password: Joi.string(),
librariesio_tokens: Joi.arrayFromString().items(Joi.string()),
nexus_user: Joi.string(),
nexus_pass: Joi.string(),
npm_token: Joi.string(),
obs_user: Joi.string(),
obs_pass: Joi.string(),
redis_url: Joi.string().uri({ scheme: ['redis', 'rediss'] }),
opencollective_token: Joi.string(),
pepy_key: Joi.string(),
postgres_url: Joi.string().uri({ scheme: 'postgresql' }),
reddit_client_id: Joi.string(),
reddit_client_secret: Joi.string(),
sentry_dsn: Joi.string(),
sl_insight_userUuid: Joi.string(),
sl_insight_apiToken: Joi.string(),
sonarqube_token: Joi.string(),
stackapps_api_key: Joi.string(),
teamcity_user: Joi.string(),
teamcity_pass: Joi.string(),
twitch_client_id: Joi.string(),
twitch_client_secret: Joi.string(),
influx_username: Joi.string(),
influx_password: Joi.string(),
weblate_api_key: Joi.string(),
youtube_api_key: Joi.string(),
}).required()
const privateMetricsInfluxConfigSchema = privateConfigSchema.append({
influx_username: Joi.string().required(),
influx_password: Joi.string().required(),
})
function addHandlerAtIndex(camp, index, handlerFn) {
camp.stack.splice(index, 0, handlerFn)
}
function isOnHeroku() {
return !!process.env.DYNO
}
function isOnFly() {
return !!process.env.FLY_APP_NAME
}
/**
* The Server is based on the web framework Scoutcamp. It creates
* an http server, sets up helpers for token persistence and monitoring.
* Then it loads all the services, injecting dependencies as it
* asks each one to register its route with Scoutcamp.
*/
class Server {
/**
* Badge Server Constructor
*
* @param {object} config Configuration object read from config yaml files
* by https://www.npmjs.com/package/config and validated against
* publicConfigSchema and privateConfigSchema
* @see https://github.com/badges/shields/blob/master/doc/production-hosting.md#configuration
* @see https://github.com/badges/shields/blob/master/doc/server-secrets.md
*/
constructor(config) {
const publicConfig = Joi.attempt(config.public, publicConfigSchema)
const privateConfig = this.validatePrivateConfig(
config.private,
privateConfigSchema,
)
// We want to require an username and a password for the influx metrics
// only if the influx metrics are enabled. The private config schema
// and the public config schema are two separate schemas so we have to run
// validation manually.
if (publicConfig.metrics.influx &amp;&amp; publicConfig.metrics.influx.enabled) {
this.validatePrivateConfig(
config.private,
privateMetricsInfluxConfigSchema,
)
}
this.config = {
public: publicConfig,
private: privateConfig,
}
this.githubConstellation = new GithubConstellation({
service: publicConfig.services.github,
private: privateConfig,
})
this.librariesioConstellation = new LibrariesIoConstellation({
private: privateConfig,
})
if (publicConfig.metrics.prometheus.enabled) {
this.metricInstance = new PrometheusMetrics()
if (publicConfig.metrics.influx.enabled) {
this.influxMetrics = new InfluxMetrics(
this.metricInstance,
Object.assign({}, publicConfig.metrics.influx, {
username: privateConfig.influx_username,
password: privateConfig.influx_password,
}),
)
}
}
}
validatePrivateConfig(privateConfig, privateConfigSchema) {
try {
return Joi.attempt(privateConfig, privateConfigSchema)
} catch (e) {
const badPaths = e.details.map(({ path }) => path)
throw Error(
`Private configuration is invalid. Check these paths: ${badPaths.join(
',',
)}`,
)
}
}
get port() {
const {
port,
ssl: { isSecure },
} = this.config.public
return port || (isSecure ? 443 : 80)
}
get baseUrl() {
const {
bind: { address, port },
ssl: { isSecure },
} = this.config.public
return url.format({
protocol: isSecure ? 'https' : 'http',
hostname: address,
port,
pathname: '/',
})
}
// See https://www.viget.com/articles/heroku-cloudflare-the-right-way/
requireCloudflare() {
// Set `req.ip`, which is expected by `cloudflareMiddleware()`. This is set
// by Express but not Scoutcamp.
addHandlerAtIndex(this.camp, 0, function (req, res, next) {
if (isOnHeroku()) {
// On Heroku, `req.socket.remoteAddress` is the Heroku router. However,
// the router ensures that the last item in the `X-Forwarded-For` header
// is the real origin.
// https://stackoverflow.com/a/18517550/893113
req.ip = req.headers['x-forwarded-for'].split(', ').pop()
} else if (isOnFly()) {
// On Fly we can use the Fly-Client-IP header
// https://fly.io/docs/reference/runtime-environment/#request-headers
req.ip = req.headers['fly-client-ip']
? req.headers['fly-client-ip']
: req.socket.remoteAddress
} else {
req.ip = req.socket.remoteAddress
}
next()
})
addHandlerAtIndex(this.camp, 1, cloudflareMiddleware())
}
/**
* Set up Scoutcamp routes for 404/not found responses
*/
registerErrorHandlers() {
const { camp, config } = this
const {
public: { rasterUrl },
} = config
camp.route(/\.(gif|jpg)$/, (query, match, end, request) => {
const [, format] = match
makeSend(
'svg',
request.res,
end,
)(
makeBadge({
label: '410',
message: `${format} no longer available`,
color: 'lightgray',
format: 'svg',
}),
)
})
if (!rasterUrl) {
camp.route(
/^\/((?!img|assets\/)).*\.png$/,
(query, match, end, request) => {
makeSend(
'svg',
request.res,
end,
)(
makeBadge({
label: '404',
message: 'raster badges not available',
color: 'lightgray',
format: 'svg',
}),
)
},
)
}
camp.notfound(/(\.svg|\.json|)$/, (query, match, end, request) => {
const [, extension] = match
const format = (extension || '.svg').replace(/^\./, '')
makeSend(
format,
request.res,
end,
)(
makeBadge({
label: '404',
message: 'badge not found',
color: 'red',
format,
}),
)
})
}
/**
* Set up a couple of redirects:
* One for the raster badges.
* Another to redirect the base URL /
* (we use this to redirect {@link https://img.shields.io/}
* to {@link https://shields.io/} )
*/
registerRedirects() {
const { config, camp } = this
const {
public: { rasterUrl, redirectUrl },
} = config
if (rasterUrl) {
// Redirect to the raster server for raster versions of modern badges.
camp.route(
/^\/((?!img|assets\/)).*\.png$/,
(queryParams, match, end, ask) => {
ask.res.statusCode = 301
ask.res.setHeader(
'Location',
rasterRedirectUrl({ rasterUrl }, ask.req.url),
)
const cacheDuration = (30 * 24 * 3600) | 0 // 30 days.
ask.res.setHeader('Cache-Control', `max-age=${cacheDuration}`)
ask.res.end()
},
)
}
if (redirectUrl) {
camp.route(/^\/$/, (data, match, end, ask) => {
ask.res.statusCode = 302
ask.res.setHeader('Location', redirectUrl)
ask.res.end()
})
}
}
/**
* Iterate all the service classes defined in /services,
* load each service and register a Scoutcamp route for each service.
*/
async registerServices() {
const { config, camp, metricInstance } = this
const { apiProvider: githubApiProvider } = this.githubConstellation
const { apiProvider: librariesIoApiProvider } =
this.librariesioConstellation
;(await loadServiceClasses()).forEach(serviceClass =>
serviceClass.register(
{
camp,
handleRequest,
githubApiProvider,
librariesIoApiProvider,
metricInstance,
},
{
handleInternalErrors: config.public.handleInternalErrors,
cacheHeaders: config.public.cacheHeaders,
rasterUrl: config.public.rasterUrl,
private: config.private,
public: config.public,
},
),
)
}
bootstrapAgent() {
/*
Bootstrap global agent.
This allows self-hosting users to configure a proxy with
HTTP_PROXY, HTTPS_PROXY, NO_PROXY variables
*/
if (!('GLOBAL_AGENT_ENVIRONMENT_VARIABLE_NAMESPACE' in process.env)) {
process.env.GLOBAL_AGENT_ENVIRONMENT_VARIABLE_NAMESPACE = ''
}
const proxyPrefix = process.env.GLOBAL_AGENT_ENVIRONMENT_VARIABLE_NAMESPACE
const HTTP_PROXY = process.env[`${proxyPrefix}HTTP_PROXY`] || null
const HTTPS_PROXY = process.env[`${proxyPrefix}HTTPS_PROXY`] || null
if (HTTP_PROXY || HTTPS_PROXY) {
bootstrap()
}
}
/**
* Start the HTTP server:
* Bootstrap Scoutcamp,
* Register handlers,
* Start listening for requests on this.baseUrl()
*/
async start() {
const {
bind: { port, address: hostname },
ssl: { isSecure: secure, cert, key },
requireCloudflare,
} = this.config.public
this.bootstrapAgent()
log.log(`Server is starting up: ${this.baseUrl}`)
const camp = (this.camp = Camp.create({
documentRoot: this.config.public.documentRoot,
port,
hostname,
secure,
staticMaxAge: 300,
cert,
key,
}))
if (requireCloudflare) {
this.requireCloudflare()
}
const { githubConstellation, metricInstance } = this
await githubConstellation.initialize(camp)
if (metricInstance) {
if (this.config.public.metrics.prometheus.endpointEnabled) {
metricInstance.registerMetricsEndpoint(camp)
}
if (this.influxMetrics) {
this.influxMetrics.startPushingMetrics()
}
}
camp.handle((req, res, next) => {
// https://github.com/badges/shields/issues/3273
res.setHeader('Access-Control-Allow-Origin', '*')
// https://github.com/badges/shields/issues/10419
res.setHeader('Cross-Origin-Resource-Policy', 'cross-origin')
next()
})
this.registerErrorHandlers()
this.registerRedirects()
await this.registerServices()
camp.timeout = this.config.public.requestTimeoutSeconds * 1000
if (this.config.public.requestTimeoutSeconds > 0) {
camp.on('timeout', socket => {
const maxAge = this.config.public.requestTimeoutMaxAgeSeconds
socket.write('HTTP/1.1 408 Request Timeout\r\n')
socket.write('Content-Type: text/html; charset=UTF-8\r\n')
socket.write('Content-Encoding: UTF-8\r\n')
socket.write(`Cache-Control: max-age=${maxAge}, s-maxage=${maxAge}\r\n`)
socket.write('Connection: close\r\n\r\n')
socket.write('Request Timeout')
socket.end()
})
}
camp.listenAsConfigured()
await new Promise(resolve => camp.on('listening', () => resolve()))
}
static resetGlobalState() {
// This state should be migrated to instance state. When possible, do not add new
// global state.
clearResourceCache()
}
reset() {
this.constructor.resetGlobalState()
}
/**
* Stop the HTTP server and clean up helpers
*/
async stop() {
if (this.camp) {
await new Promise(resolve => this.camp.close(resolve))
this.camp = undefined
}
if (this.cleanupMonitor) {
this.cleanupMonitor()
this.cleanupMonitor = undefined
}
if (this.githubConstellation) {
await this.githubConstellation.stop()
this.githubConstellation = undefined
}
if (this.metricInstance) {
if (this.influxMetrics) {
this.influxMetrics.stopPushingMetrics()
}
this.metricInstance.stop()
}
}
}
export default Server
</code></pre>
</article>
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