| /* |
| * 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.qpid.server.user.connection.limits.plugins; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.stream.Collectors; |
| |
| import org.apache.qpid.server.configuration.IllegalConfigurationException; |
| import org.apache.qpid.server.model.ConfiguredObject; |
| import org.apache.qpid.server.model.ManagedAttributeField; |
| import org.apache.qpid.server.security.access.Operation; |
| import org.apache.qpid.server.security.limit.ConnectionLimitProvider; |
| import org.apache.qpid.server.user.connection.limits.config.FileParser; |
| import org.apache.qpid.server.user.connection.limits.config.Rule; |
| import org.apache.qpid.server.user.connection.limits.config.RuleSetCreator; |
| |
| abstract class AbstractFileBasedConnectionLimitProvider<C extends AbstractFileBasedConnectionLimitProvider<C>> |
| extends AbstractConnectionLimitProvider<C> implements FileBasedConnectionLimitProvider<C> |
| { |
| static final String FILE_PROVIDER_TYPE = "ConnectionLimitFile"; |
| |
| @ManagedAttributeField(afterSet = "reloadSourceFile") |
| private String _path; |
| |
| public AbstractFileBasedConnectionLimitProvider(ConfiguredObject<?> parent, Map<String, Object> attributes) |
| { |
| super(parent, attributes); |
| } |
| |
| @Override |
| public String getPath() |
| { |
| return _path; |
| } |
| |
| @Override |
| public void reload() |
| { |
| authorise(Operation.UPDATE); |
| reloadSourceFile(); |
| } |
| |
| @Override |
| public Long getDefaultFrequencyPeriod() |
| { |
| return Optional.ofNullable(creator()) |
| .map(RuleSetCreator::getDefaultFrequencyPeriod) |
| .orElseGet(() -> getContextValue(Long.class, ConnectionLimitProvider.CONNECTION_FREQUENCY_PERIOD)); |
| } |
| |
| @Override |
| public List<ConnectionLimitRule> getRules() |
| { |
| return Optional.<List<Rule>>ofNullable(creator()).orElseGet(Collections::emptyList) |
| .stream().map(ConnectionLimitRuleImpl::new).collect(Collectors.toList()); |
| } |
| |
| @Override |
| public void resetCounters() |
| { |
| changeAttributes(Collections.emptyMap()); |
| } |
| |
| private void reloadSourceFile() |
| { |
| try |
| { |
| forceNewRuleSetCreator(); |
| // force the change listener to fire, causing the parent broker to update its cache |
| changeAttributes(Collections.emptyMap()); |
| } |
| catch (RuntimeException e) |
| { |
| throw new IllegalConfigurationException("Failed to reload the connection limit file", e); |
| } |
| } |
| |
| @Override |
| protected RuleSetCreator newRuleSetCreator() |
| { |
| final RuleSetCreator creator = FileParser.parse(getPath()); |
| if (!creator.isDefaultFrequencyPeriodSet()) |
| { |
| creator.setDefaultFrequencyPeriod( |
| getContextValue(Long.class, ConnectionLimitProvider.CONNECTION_FREQUENCY_PERIOD)); |
| } |
| return creator; |
| } |
| } |