| /* |
| * 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.analysis; |
| |
| import com.google.common.base.Strings; |
| import java.io.FileNotFoundException; |
| import java.io.Reader; |
| import java.io.StringReader; |
| import java.util.Collections; |
| import java.util.Map; |
| import lombok.extern.slf4j.Slf4j; |
| import org.apache.skywalking.oap.server.configuration.api.ConfigChangeWatcher; |
| import org.apache.skywalking.oap.server.core.CoreModule; |
| import org.apache.skywalking.oap.server.core.CoreModuleProvider; |
| import org.apache.skywalking.oap.server.library.util.ResourceUtils; |
| import org.yaml.snakeyaml.LoaderOptions; |
| import org.yaml.snakeyaml.Yaml; |
| import org.yaml.snakeyaml.constructor.SafeConstructor; |
| |
| /** |
| * Apdex threshold configuration dictionary adapter. Looking up a service apdex threshold from dynamic config service. |
| */ |
| @Slf4j |
| public class ApdexThresholdConfig extends ConfigChangeWatcher implements ConfigurationDictionary { |
| |
| private static final String CONFIG_FILE_NAME = "service-apdex-threshold.yml"; |
| |
| private static final int SYSTEM_RESERVED_THRESHOLD = 500; |
| |
| private Map<String, Integer> dictionary = Collections.emptyMap(); |
| |
| private String rawConfig = null; |
| |
| public ApdexThresholdConfig(final CoreModuleProvider provider) { |
| super(CoreModule.NAME, provider, "apdexThreshold"); |
| try { |
| updateConfig(ResourceUtils.read(CONFIG_FILE_NAME)); |
| } catch (final FileNotFoundException e) { |
| log.error("Cannot config from: {}", CONFIG_FILE_NAME, e); |
| } |
| } |
| |
| @Override |
| public Number lookup(String name) { |
| int t = dictionary.getOrDefault(name, -1); |
| if (t < 0) { |
| t = dictionary.getOrDefault("default", -1); |
| } |
| if (t < 0) { |
| log.warn("Pick up system reserved threshold {}ms because of config missing", SYSTEM_RESERVED_THRESHOLD); |
| return SYSTEM_RESERVED_THRESHOLD; |
| } |
| if (log.isDebugEnabled()) { |
| log.debug("Apdex threshold of {} is {}ms", name, t); |
| } |
| return t; |
| } |
| |
| @Override |
| public void notify(ConfigChangeEvent value) { |
| if (EventType.DELETE.equals(value.getEventType())) { |
| activeSetting(null); |
| } else { |
| activeSetting(value.getNewValue()); |
| } |
| } |
| |
| @Override |
| public String value() { |
| return rawConfig; |
| } |
| |
| private synchronized void activeSetting(String config) { |
| if (log.isDebugEnabled()) { |
| log.debug("Updating using new static config: {}", config); |
| } |
| rawConfig = config; |
| updateConfig(new StringReader(Strings.nullToEmpty(config))); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private void updateConfig(final Reader contentRender) { |
| dictionary = new Yaml(new SafeConstructor(new LoaderOptions())).load(contentRender); |
| if (dictionary == null) { |
| dictionary = Collections.emptyMap(); |
| } |
| } |
| } |