org.apache.logging.log4j.util.PropertiesPropertySource Maven / Gradle / Ivy
/*
* 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.log4j.util;
import java.util.Collection;
import java.util.Map;
import java.util.Properties;
/**
* PropertySource backed by a {@link Properties} instance. Normalized property names follow a scheme like this:
* {@code Log4jContextSelector} would normalize to {@code log4j2.contextSelector}.
*
* @since 2.10.0
*/
public class PropertiesPropertySource implements PropertySource {
private static final int DEFAULT_PRIORITY = 200;
private static final String PREFIX = "log4j2.";
private final Properties properties;
private final int priority;
public PropertiesPropertySource(final Properties properties) {
this(properties, DEFAULT_PRIORITY);
}
public PropertiesPropertySource(final Properties properties, final int priority) {
this.properties = properties;
this.priority = priority;
}
@Override
public int getPriority() {
return priority;
}
@Override
public void forEach(final BiConsumer action) {
for (final Map.Entry entry : properties.entrySet()) {
action.accept(((String) entry.getKey()), ((String) entry.getValue()));
}
}
@Override
public CharSequence getNormalForm(final Iterable tokens) {
final CharSequence camelCase = Util.joinAsCamelCase(tokens);
return camelCase.length() > 0 ? PREFIX + camelCase : null;
}
@Override
public Collection getPropertyNames() {
return properties.stringPropertyNames();
}
@Override
public String getProperty(final String key) {
return properties.getProperty(key);
}
@Override
public boolean containsProperty(final String key) {
return getProperty(key) != null;
}
}