Java tutorial
// Copyright 2012 Google Inc. All Rights Reserved. // // Licensed 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 com.google.collide.server.shared.util; import com.google.common.base.Stopwatch; import com.google.common.hash.Hashing; import com.google.protobuf.ByteString; /** * Calculates hashes of file contents and records metrics about the run time. */ public class FileHasher { public static ByteString getSha1(String contents) { Stopwatch stopWatch = new Stopwatch().start(); ByteString sha1 = ByteString.copyFrom(Hashing.sha1().hashString(contents).asBytes()); return sha1; } }