/* * Copyright 2010 Proofpoint, Inc. * * 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 io.airlift.tracetoken; import java.util.concurrent.atomic.AtomicLong; import static java.lang.String.format; import static java.util.Locale.ENGLISH; import static java.util.UUID.randomUUID; public class TraceTokenManager { private final String prefix = randomUUID().toString().toLowerCase(ENGLISH).replace("-", ""); private final AtomicLong sequence = new AtomicLong(); private final ThreadLocal<String> token = new ThreadLocal<String>(); public void registerRequestToken(String token) { this.token.set(token); } public String getCurrentRequestToken() { return this.token.get(); } public String createAndRegisterNewRequestToken() { String newToken = prefix + format("%010x", sequence.getAndIncrement()); this.token.set(newToken); return newToken; } }