--- /dev/null
+module.exports = updateIndex
+
+var fs = require('graceful-fs')
+var assert = require('assert')
+var path = require('path')
+var mkdir = require('mkdirp')
+var chownr = require('chownr')
+var npm = require('../npm.js')
+var log = require('npmlog')
+var cacheFile = require('npm-cache-filename')
+var getCacheStat = require('./get-stat.js')
+var mapToRegistry = require('../utils/map-to-registry.js')
+
+/* /-/all is special.
+ * It uses timestamp-based caching and partial updates,
+ * because it is a monster.
+ */
+function updateIndex (staleness, cb) {
+ assert(typeof cb === 'function', 'must pass callback to updateIndex')
+
+ mapToRegistry('-/all', npm.config, function (er, uri, auth) {
+ if (er) return cb(er)
+
+ var params = {
+ timeout: staleness,
+ follow: true,
+ staleOk: true,
+ auth: auth
+ }
+ var cacheBase = cacheFile(npm.config.get('cache'))(uri)
+ var cachePath = path.join(cacheBase, '.cache.json')
+ log.info('updateIndex', cachePath)
+
+ getCacheStat(function (er, st) {
+ if (er) return cb(er)
+
+ mkdir(cacheBase, function (er, made) {
+ if (er) return cb(er)
+
+ fs.readFile(cachePath, function (er, data) {
+ if (er) {
+ log.warn('', 'Building the local index for the first time, please be patient')
+ return updateIndex_(uri, params, {}, cachePath, cb)
+ }
+
+ chownr(made || cachePath, st.uid, st.gid, function (er) {
+ if (er) return cb(er)
+
+ try {
+ data = JSON.parse(data)
+ } catch (ex) {
+ fs.writeFile(cachePath, '{}', function (er) {
+ if (er) return cb(new Error('Broken cache.'))
+
+ log.warn('', 'Building the local index for the first time, please be patient')
+ return updateIndex_(uri, params, {}, cachePath, cb)
+ })
+ }
+
+ var t = +data._updated || 0
+ // use the cache and update in the background if it's not too old
+ if (Date.now() - t < 60000) {
+ cb(null, data)
+ cb = function () {}
+ }
+
+ if (t === 0) {
+ log.warn('', 'Building the local index for the first time, please be patient')
+ } else {
+ log.verbose('updateIndex', 'Cached search data present with timestamp', t)
+ uri += '/since?stale=update_after&startkey=' + t
+ }
+ updateIndex_(uri, params, data, cachePath, cb)
+ })
+ })
+ })
+ })
+ })
+}
+
+function updateIndex_ (all, params, data, cachePath, cb) {
+ log.silly('update-index', 'fetching', all)
+ npm.registry.request(all, params, function (er, updates, _, res) {
+ if (er) return cb(er, data)
+
+ var headers = res.headers
+ var updated = updates._updated || Date.parse(headers.date)
+
+ Object.keys(updates).forEach(function (p) { data[p] = updates[p] })
+
+ data._updated = updated
+ getCacheStat(function (er, st) {
+ if (er) return cb(er)
+
+ fs.writeFile(cachePath, JSON.stringify(data), function (er) {
+ delete data._updated
+ if (er) return cb(er)
+ chownr(cachePath, st.uid, st.gid, function (er) {
+ cb(er, data)
+ })
+ })
+ })
+ })
+}