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300 lines
9.3 KiB
300 lines
9.3 KiB
module.exports = regRequest
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var url = require("url")
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, fs = require("graceful-fs")
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, rm = require("rimraf")
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, asyncMap = require("slide").asyncMap
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, Stream = require("stream").Stream
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, request = require("request")
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, retry = require("retry")
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function regRequest (method, where, what, etag, nofollow, reauthed, cb_) {
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if (typeof cb_ !== "function") cb_ = reauthed, reauthed = false
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if (typeof cb_ !== "function") cb_ = nofollow, nofollow = false
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if (typeof cb_ !== "function") cb_ = etag, etag = null
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if (typeof cb_ !== "function") cb_ = what, what = null
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var registry = this.conf.get('registry')
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if (!registry) return cb(new Error(
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"No registry url provided: " + method + " " + where))
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// Since there are multiple places where an error could occur,
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// don't let the cb be called more than once.
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var errState = null
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function cb (er) {
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if (errState) return
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if (er) errState = er
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cb_.apply(null, arguments)
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}
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if (where.match(/^\/?favicon.ico/)) {
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return cb(new Error("favicon.ico isn't a package, it's a picture."))
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}
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var adduserChange = /^\/?-\/user\/org\.couchdb\.user:([^\/]+)\/-rev/
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, adduserNew = /^\/?-\/user\/org\.couchdb\.user:([^\/]+)/
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, nu = where.match(adduserNew)
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, uc = where.match(adduserChange)
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, isUpload = what || this.conf.get('always-auth')
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, isDel = method === "DELETE"
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, authRequired = isUpload && !nu || uc || isDel
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// resolve to a full url on the registry
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if (!where.match(/^https?:\/\//)) {
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this.log.verbose("url raw", where)
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var q = where.split("?")
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where = q.shift()
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q = q.join("?")
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if (where.charAt(0) !== "/") where = "/" + where
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where = "." + where.split("/").map(function (p) {
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p = p.trim()
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if (p.match(/^org.couchdb.user/)) {
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return p.replace(/\//g, encodeURIComponent("/"))
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}
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return encodeURIComponent(p)
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}).join("/")
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if (q) where += "?" + q
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this.log.verbose("url resolving", [registry, where])
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where = url.resolve(registry, where)
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this.log.verbose("url resolved", where)
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}
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var remote = url.parse(where)
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, auth = this.conf.get('_auth')
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if (authRequired && !this.conf.get('always-auth')) {
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var couch = this.couchLogin
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, token = couch && (this.conf.get('_token') || couch.token)
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, validToken = token && couch.valid(token)
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if (!validToken) token = null
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else this.conf.set('_token', token)
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if (couch && !token) {
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// login to get a valid token
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var a = { name: this.conf.get('username'),
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password: this.conf.get('_password') }
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var args = arguments
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return this.couchLogin.login(a, function (er, cr, data) {
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if (er || !couch.valid(couch.token)) {
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er = er || new Error('login error')
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return cb(er, cr, data)
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}
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this.conf.set('_token', this.couchLogin.token)
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return regRequest.call(this,
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method, where, what,
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etag, nofollow, reauthed, cb_)
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}.bind(this))
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}
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}
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// now we either have a valid token, or an auth.
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if (authRequired && !auth && !token) {
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return cb(new Error(
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"Cannot insert data into the registry without auth"))
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}
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if (auth && !token) {
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remote.auth = new Buffer(auth, "base64").toString("utf8")
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}
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// Tuned to spread 3 attempts over about a minute.
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// See formula at <https://github.com/tim-kos/node-retry>.
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var operation = retry.operation({
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retries: this.conf.get('fetch-retries') || 2,
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factor: this.conf.get('fetch-retry-factor'),
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minTimeout: this.conf.get('fetch-retry-mintimeout') || 10000,
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maxTimeout: this.conf.get('fetch-retry-maxtimeout') || 60000
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})
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var self = this
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operation.attempt(function (currentAttempt) {
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self.log.info("trying", "registry request attempt " + currentAttempt
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+ " at " + (new Date()).toLocaleTimeString())
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makeRequest.call(self, method, remote, where, what, etag, nofollow, token
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, function (er, parsed, raw, response) {
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if (!er || er.message.match(/^SSL Error/)) {
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if (er)
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er.code = 'ESSL'
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return cb(er, parsed, raw, response)
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}
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// Only retry on 408, 5xx or no `response`.
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var statusCode = response && response.statusCode
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var reauth = !reauthed &&
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( statusCode === 401 ||
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statusCode === 400 ||
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statusCode === 403 )
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if (reauth)
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reauthed = true
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var timeout = statusCode === 408
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var serverError = statusCode >= 500
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var statusRetry = !statusCode || timeout || serverError
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if (reauth && this.conf.get('_auth') && this.conf.get('_token')) {
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this.conf.del('_token')
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this.couchLogin.token = null
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return regRequest.call(this, method, where, what,
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etag, nofollow, reauthed, cb_)
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}
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if (er && statusRetry && operation.retry(er)) {
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self.log.info("retry", "will retry, error on last attempt: " + er)
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return
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}
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cb.apply(null, arguments)
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}.bind(this))
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}.bind(this))
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}
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function makeRequest (method, remote, where, what, etag, nofollow, tok, cb_) {
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var cbCalled = false
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function cb () {
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if (cbCalled) return
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cbCalled = true
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cb_.apply(null, arguments)
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}
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var strict = this.conf.get('strict-ssl')
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if (strict === undefined) strict = true
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var opts = { url: remote
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, method: method
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, ca: this.conf.get('ca')
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, strictSSL: strict }
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, headers = opts.headers = {}
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if (etag) {
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this.log.verbose("etag", etag)
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headers[method === "GET" ? "if-none-match" : "if-match"] = etag
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}
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if (tok) {
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headers.cookie = 'AuthSession=' + tok.AuthSession
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}
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headers.accept = "application/json"
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headers["user-agent"] = this.conf.get('user-agent') ||
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'node/' + process.version
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var p = this.conf.get('proxy')
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var sp = this.conf.get('https-proxy') || p
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opts.proxy = remote.protocol === "https:" ? sp : p
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// figure out wth 'what' is
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if (what) {
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if (Buffer.isBuffer(what) || typeof what === "string") {
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opts.body = what
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headers["content-type"] = "application/json"
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headers["content-length"] = Buffer.byteLength(what)
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} else if (what instanceof Stream) {
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headers["content-type"] = "application/octet-stream"
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if (what.size) headers["content-length"] = what.size
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} else {
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delete what._etag
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opts.json = what
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}
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}
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if (nofollow) {
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opts.followRedirect = false
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}
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this.log.http(method, remote.href || "/")
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var done = requestDone.call(this, method, where, cb)
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var req = request(opts, done)
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req.on("error", cb)
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req.on("socket", function (s) {
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s.on("error", cb)
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})
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if (what && (what instanceof Stream)) {
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what.pipe(req)
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}
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}
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// cb(er, parsed, raw, response)
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function requestDone (method, where, cb) {
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return function (er, response, data) {
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if (er) return cb(er)
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this.log.http(response.statusCode, url.parse(where).href)
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var parsed
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if (Buffer.isBuffer(data)) {
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data = data.toString()
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}
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if (data && typeof data === "string" && response.statusCode !== 304) {
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try {
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parsed = JSON.parse(data)
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} catch (ex) {
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ex.message += "\n" + data
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this.log.verbose("bad json", data)
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this.log.error("registry", "error parsing json")
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return cb(ex, null, data, response)
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}
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} else if (data) {
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parsed = data
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data = JSON.stringify(parsed)
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}
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// expect data with any error codes
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if (!data && response.statusCode >= 400) {
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return cb( response.statusCode + " "
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+ require("http").STATUS_CODES[response.statusCode]
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, null, data, response )
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}
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var er = null
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if (parsed && response.headers.etag) {
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parsed._etag = response.headers.etag
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}
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if (parsed && parsed.error && response.statusCode >= 400) {
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var w = url.parse(where).pathname.substr(1)
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var name
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if (!w.match(/^-/) && parsed.error === "not_found") {
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w = w.split("/")
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name = w[w.indexOf("_rewrite") + 1]
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er = new Error("404 Not Found: "+name)
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er.code = "E404"
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er.pkgid = name
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} else {
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er = new Error(
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parsed.error + " " + (parsed.reason || "") + ": " + w)
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}
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} else if (method !== "HEAD" && method !== "GET") {
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// invalidate cache
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// This is irrelevant for commands that do etag caching, but
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// ls and view also have a timed cache, so this keeps the user
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// from thinking that it didn't work when it did.
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// Note that failure is an acceptable option here, since the
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// only result will be a stale cache for some helper commands.
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var path = require("path")
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, p = url.parse(where).pathname.split("/")
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, _ = "/"
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, caches = p.map(function (part) {
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return _ = path.join(_, part)
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}).map(function (cache) {
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return path.join(this.conf.get('cache'), cache, ".cache.json")
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}, this)
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// if the method is DELETE, then also remove the thing itself.
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// Note that the search index is probably invalid. Whatever.
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// That's what you get for deleting stuff. Don't do that.
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if (method === "DELETE") {
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p = p.slice(0, p.indexOf("-rev"))
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caches.push(path.join(this.conf.get('cache'), p.join("/")))
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}
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asyncMap(caches, rm, function () {})
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}
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return cb(er, parsed, data, response)
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}.bind(this)
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}
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