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Adds conditional to hanlde if redis becomes unavailable #22

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Adds conditional to hanlde if redis becomes unavailable #22

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a97cb32
Add option to add prefix_redis_key
vamonte Dec 8, 2015
262590d
Adds conditional to hanlde if redis becomes unavailable
Dec 8, 2015
7622797
fix lint issues, revert version bump
Mar 24, 2016
cffbe67
Merge remote-tracking branch 'vamonte/master'
May 9, 2016
4f85c10
ignore idea folder
May 9, 2016
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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -1 +1,2 @@
node_modules
.idea/
13 changes: 11 additions & 2 deletions index.js
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@@ -1,19 +1,28 @@
module.exports = function (app, db) {
var dbError = false
db.on('error', function (err) {
dbError = true
})
db.on('connect', function () {
dbError = false
})
return function (opts) {
var middleware = function (req, res, next) {
if(dbError === true) return next()
if (opts.whitelist && opts.whitelist(req)) return next()
opts.lookup = Array.isArray(opts.lookup) ? opts.lookup : [opts.lookup]
opts.onRateLimited = typeof opts.onRateLimited === 'function' ? opts.onRateLimited : function (req, res, next) {
res.status(429).send('Rate limit exceeded')
}
var lookups = opts.lookup.map(function (item) {
return item + ':' + item.split('.').reduce(function (prev, cur) {
return item.split('.').reduce(function (prev, cur) {
return prev[cur]
}, req)
}).join(':')
var path = opts.path || req.path
var method = (opts.method || req.method).toLowerCase()
var key = 'ratelimit:' + path + ':' + method + ':' + lookups
var prefix = opts.prefix_redis_key || 'ratelimit:' + path + ':' + method;
var key = prefix + ':' + lookups
db.get(key, function (err, limit) {
if (err && opts.ignoreErrors) return next()
var now = Date.now()
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