blob: f03ee54797ef52c421eac363c94351067bbd3f2a [file] [log] [blame]
/*
* 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 org.apache.logging.slf4j;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.logging.log4j.spi.CleanableThreadContextMap;
import org.apache.logging.log4j.util.SortedArrayStringMap;
import org.apache.logging.log4j.util.StringMap;
import org.slf4j.MDC;
/**
* Bind the ThreadContextMap to the SLF4J MDC.
*/
public class MDCContextMap implements CleanableThreadContextMap {
private static final StringMap EMPTY_CONTEXT_DATA = new SortedArrayStringMap(1);
static {
EMPTY_CONTEXT_DATA.freeze();
}
@Override
public void put(final String key, final String value) {
MDC.put(key, value);
}
@Override
public void putAll(final Map<String, String> m) {
for (final Entry<String, String> entry : m.entrySet()) {
MDC.put(entry.getKey(), entry.getValue());
}
}
@Override
public String get(final String key) {
return MDC.get(key);
}
@Override
public void remove(final String key) {
MDC.remove(key);
}
@Override
public void removeAll(final Iterable<String> keys) {
for (final String key : keys) {
MDC.remove(key);
}
}
@Override
public void clear() {
MDC.clear();
}
@Override
public boolean containsKey(final String key) {
return MDC.getCopyOfContextMap().containsKey(key);
}
@Override
@SuppressWarnings("unchecked") // nothing we can do about this, restricted by SLF4J API
public Map<String, String> getCopy() {
return MDC.getCopyOfContextMap();
}
@Override
@SuppressWarnings("unchecked") // nothing we can do about this, restricted by SLF4J API
public Map<String, String> getImmutableMapOrNull() {
return MDC.getCopyOfContextMap();
}
@Override
public boolean isEmpty() {
return MDC.getCopyOfContextMap().isEmpty();
}
@Override
public StringMap getReadOnlyContextData() {
final Map<String, String> copy = getCopy();
if (copy.isEmpty()) {
return EMPTY_CONTEXT_DATA;
}
final StringMap result = new SortedArrayStringMap();
for (final Entry<String, String> entry : copy.entrySet()) {
result.putValue(entry.getKey(), entry.getValue());
}
return result;
}
}