aws4 - npm Package Compare versions

Comparing version 0.1.12 to 0.2.0

aws4.js

@@ -1,4 +0,6 @@
-var aws4   = exports,
-    url    = require('url'),
-    crypto = require('crypto')
+var aws4 = exports,
+    url = require('url'),
+    crypto = require('crypto'),
+    lru = require('lru-cache'),
+    credentialsCache = lru(1000)
 
@@ -96,6 +98,11 @@ // http://docs.amazonwebservices.com/general/latest/gr/signature-version-4.html
 RequestSigner.prototype.signature = function() {
-  var kDate = hmac('AWS4' + this.credentials.secretAccessKey, this.date),
-      kRegion = hmac(kDate, this.region),
-      kService = hmac(kRegion, this.service),
-      kCredentials = hmac(kService, 'aws4_request')
+  var cacheKey = [this.credentials.secretAccessKey, this.date, this.region, this.service].join(),
+      kDate, kRegion, kService, kCredentials = credentialsCache.get(cacheKey)
+  if (!kCredentials) {
+    kDate = hmac('AWS4' + this.credentials.secretAccessKey, this.date)
+    kRegion = hmac(kDate, this.region)
+    kService = hmac(kRegion, this.service)
+    kCredentials = hmac(kService, 'aws4_request')
+    credentialsCache.set(cacheKey, kCredentials)
+  }
   return hmac(kCredentials, this.stringToSign(), 'hex')
@@ -102,0 +109,0 @@ }

package.json

 {
   "name": "aws4",
-  "version": "0.1.12",
+  "version": "0.2.0",
   "description": "Signs and prepares requests using AWS Signature Version 4",
@@ -38,2 +38,5 @@ "author": "Michael Hart <[e-mail]> (http://github.com/mhart)",
   "license": "MIT",
+  "dependencies": {
+    "lru-cache": "~2.3.1"
+  },
   "devDependencies": {
@@ -40,0 +43,0 @@ "should": "~1.2.1",

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Improved metrics

Total package byte prevSize

27033

increased by1.32%

Lines of code

415

increased by1.72%

Worsened metrics

Dependency count

1

increased byInfinity%

Dependency changes

• + Addedlru-cache@~2.3.1

• + Addedlru-cache@2.3.1(transitive)