/
ContextHandler.java
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/
ContextHandler.java
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/*
* Copyright 2021 Google LLC
*
* 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
*
* https://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.cloud.logging;
/** Class provides a per-thread storage of the {@see Context} instances. */
public class ContextHandler {
private static final ThreadLocal<Context> contextHolder = initContextHolder();
/**
* Initializes the context holder to {@link InheritableThreadLocal} if {@link LogManager}
* configuration property {@code com.google.cloud.logging.ContextHandler.useInheritedContext} is
* set to {@code true} or to {@link ThreadLocal} otherwise.
*
* @return instance of the context holder.
*/
private static ThreadLocal<Context> initContextHolder() {
LoggingConfig config = new LoggingConfig(ContextHandler.class.getName());
if (config.getUseInheritedContext()) {
return new InheritableThreadLocal<>();
} else {
return new ThreadLocal<>();
}
}
public Context getCurrentContext() {
return contextHolder.get();
}
public void setCurrentContext(Context context) {
contextHolder.set(context);
}
public void removeCurrentContext() {
contextHolder.remove();
}
}