| /* |
| * 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.openjpa.lib.instrumentation; |
| |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.openjpa.lib.conf.Configurable; |
| import org.apache.openjpa.lib.conf.Configuration; |
| import org.apache.openjpa.lib.conf.PluginListValue; |
| |
| /** |
| * Specialized instrumentation providers can extend this class to get basic |
| * provider state and capabilities. It implements Configurable so it can |
| * be used within the configuration framework to participate in automatic |
| * configuration. |
| */ |
| public abstract class AbstractInstrumentationProvider implements InstrumentationProvider, Configurable { |
| |
| private Map<String, Instrument> _instruments = new ConcurrentHashMap<>(); |
| |
| private boolean _started = false; |
| private PluginListValue _instrumentValues; |
| private String _options; |
| private Configuration _config; |
| |
| @Override |
| public void setConfiguration(Configuration conf) { |
| _config = conf; |
| } |
| |
| @Override |
| public Configuration getConfiguration() { |
| return _config; |
| } |
| |
| @Override |
| public void startConfiguration() { |
| } |
| |
| @Override |
| public void endConfiguration() { |
| } |
| |
| @Override |
| public void setInstrument(String instrument) { |
| _instrumentValues = new PluginListValue("Instrument"); |
| if (getInstrumentAliases() != null) { |
| _instrumentValues.setAliases(getInstrumentAliases()); |
| } |
| _instrumentValues.setString(instrument); |
| |
| Instrument[] instruments = (Instrument[])_instrumentValues.instantiate(Instrument.class, _config); |
| for (Instrument inst : instruments) { |
| inst.setProvider(this); |
| _instruments.put(inst.getName(), inst); |
| } |
| } |
| |
| @Override |
| public String getInstrument() { |
| return _instrumentValues.getString(); |
| } |
| |
| @Override |
| public void setOptions(String options) { |
| _options = options; |
| } |
| |
| @Override |
| public String getOptions() { |
| return _options; |
| } |
| |
| @Override |
| public void addInstrument(Instrument instrument) { |
| if (instrument == null) { |
| return; |
| } |
| instrument.setProvider(this); |
| _instruments.put(instrument.getName(), instrument); |
| } |
| |
| @Override |
| public void initializeInstrument(Instrument instrument, Object context) { |
| initializeInstrument(instrument, _options, context); |
| } |
| |
| @Override |
| public void initializeInstrument(Instrument instrument, String options, Object context) { |
| instrument.setProvider(this); |
| instrument.setOptions(options); |
| instrument.setContext(context); |
| instrument.initialize(); |
| } |
| |
| @Override |
| public Instrument getInstrumentByName(String name) { |
| return _instruments.get(name); |
| } |
| |
| @Override |
| public Set<Instrument> getInstruments() { |
| return new HashSet<>(_instruments.values()); |
| } |
| |
| @Override |
| public void stopInstruments(InstrumentationLevel level, Object context) { |
| try { |
| Set<Instrument> instruments = getInstruments(); |
| for (Instrument instrument : instruments) { |
| if (instrument.getLevel() == level && |
| contextEquals(instrument.getContext(),context)) { |
| stopInstrument(instrument); |
| } |
| } |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| public void startInstruments(InstrumentationLevel level, Object context) { |
| Set<Instrument> instruments = getInstruments(); |
| for (Instrument instrument : instruments) { |
| if (instrument.getLevel() == level) { |
| initializeInstrument(instrument, context); |
| startInstrument(instrument); |
| } |
| } |
| } |
| |
| @Override |
| public void stopInstrument(Instrument instrument) { |
| stopInstrument(instrument, true); |
| } |
| |
| @Override |
| public void removeInstrumentByName(String name) { |
| Instrument ins = _instruments.remove(name); |
| if (ins != null) { |
| ins.stop(); |
| } |
| } |
| |
| @Override |
| public boolean isStarted() { |
| return _started; |
| } |
| |
| protected void setStarted(boolean started) { |
| _started = started; |
| } |
| |
| @Override |
| public String[] getInstrumentAliases() { |
| return null; |
| } |
| |
| @Override |
| public abstract void start(); |
| |
| @Override |
| public abstract void stop(); |
| |
| private static boolean contextEquals(Object ctx1, Object ctx2) { |
| if (ctx1 == ctx2) { |
| return true; |
| } |
| if (ctx1 == null) { |
| return false; |
| } |
| return ctx1.equals(ctx2); |
| } |
| |
| } |