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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements. See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache license, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License. You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the license for the specific language governing permissions and
    15   * limitations under the license.
    16   */
    17  package org.apache.logging.log4j.core.selector;
    18
    19  import java.net.URI;
    20  import java.util.ArrayList;
    21  import java.util.Collections;
    22  import java.util.List;
    23
    24  import org.apache.logging.log4j.core.LoggerContext;
    25  import org.apache.logging.log4j.core.impl.ContextAnchor;
    26
    27  /**
    28   * Returns either this Thread's context or the default LoggerContext.
    29   */
    30  public class BasicContextSelector implements ContextSelector {
    31
    32      private static final LoggerContext CONTEXT = new LoggerContext("Default");
    33
    34      @Override
    35      public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext) {
    36
    37          final LoggerContext ctx = ContextAnchor.THREAD_CONTEXT.get();
    38          return ctx != null ? ctx : CONTEXT;
    39      }
    40
    41
    42      @Override
    43      public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext,
    44                                      final URI configLocation) {
    45
    46          final LoggerContext ctx = ContextAnchor.THREAD_CONTEXT.get();
    47          return ctx != null ? ctx : CONTEXT;
    48      }
    49
    50      public LoggerContext locateContext(final String name, final String configLocation) {
    51          return CONTEXT;
    52      }
    53
    54      @Override
    55      public void removeContext(final LoggerContext context) {
    56      }
    57
    58      @Override
    59      public List<LoggerContext> getLoggerContexts() {
    60          final List<LoggerContext> list = new ArrayList<LoggerContext>();
    61          list.add(CONTEXT);
    62          return Collections.unmodifiableList(list);
    63      }
    64
    65  }