[GitHub] chetanmeh commented on a change in pull request #3396: Self-generate random strings without going through a UUID.

[GitBox <gi...@apache.org>]

chetanmeh commented on a change in pull request #3396: Self-generate random strings without going through a UUID.
URL: https://github.com/apache/incubator-openwhisk/pull/3396#discussion_r175260130
 
 

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 File path: common/scala/src/main/scala/whisk/common/RandomString.scala
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 @@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package whisk.common
+
+import java.security.SecureRandom
+
+import org.apache.commons.codec.binary.Hex
+
+object RandomString {
+  private val generator = new ThreadLocal[SecureRandom] {
 
 Review comment:
   May be use [ThreadLocalRandom][1]. As we set `java.security.egd=file:/dev/./urandom` using normal Random may be just fine
   
   [1]:  https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ThreadLocalRandom.html

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