| /* |
| * 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.skywalking.oap.server.core.config; |
| |
| import org.apache.skywalking.oap.server.configuration.api.ConfigChangeWatcher; |
| import org.apache.skywalking.oap.server.core.CoreModule; |
| import org.apache.skywalking.oap.server.library.module.ModuleProvider; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| public class SearchableTracesTagsWatcher extends ConfigChangeWatcher { |
| |
| private AtomicReference<Set<String>> searchableTags; |
| |
| private final String initialSettingsString; |
| |
| private volatile String dynamicSettingsString; |
| |
| public SearchableTracesTagsWatcher(String config, ModuleProvider provider) { |
| super(CoreModule.NAME, provider, "searchableTracesTags"); |
| searchableTags = new AtomicReference<>(new HashSet<>()); |
| initialSettingsString = config; |
| |
| activeSetting(config); |
| } |
| |
| private void activeSetting(String config) { |
| Set<String> tags = new HashSet<>(); |
| String[] settings = config.split(","); |
| for (String setting : settings) { |
| tags.add(setting); |
| } |
| |
| searchableTags.set(tags); |
| } |
| |
| public Set<String> getSearchableTags() { |
| return searchableTags.get(); |
| } |
| |
| @Override |
| public void notify(ConfigChangeEvent value) { |
| if (EventType.DELETE.equals(value.getEventType())) { |
| dynamicSettingsString = null; |
| activeSetting(initialSettingsString); |
| } else { |
| dynamicSettingsString = value.getNewValue(); |
| activeSetting(value.getNewValue()); |
| } |
| } |
| |
| @Override |
| public String value() { |
| return dynamicSettingsString; |
| } |
| } |