| /** |
| * 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.pulsar.broker.intercept; |
| |
| import com.google.common.collect.ImmutableMap; |
| import io.netty.buffer.ByteBuf; |
| import java.io.IOException; |
| import java.util.Map; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import lombok.extern.slf4j.Slf4j; |
| import org.apache.bookkeeper.mledger.Entry; |
| import org.apache.pulsar.broker.PulsarService; |
| import org.apache.pulsar.broker.ServiceConfiguration; |
| import org.apache.pulsar.broker.service.Consumer; |
| import org.apache.pulsar.broker.service.Producer; |
| import org.apache.pulsar.broker.service.ServerCnx; |
| import org.apache.pulsar.broker.service.Subscription; |
| import org.apache.pulsar.broker.service.Topic; |
| import org.apache.pulsar.common.api.proto.BaseCommand; |
| import org.apache.pulsar.common.api.proto.CommandAck; |
| import org.apache.pulsar.common.api.proto.MessageMetadata; |
| import org.apache.pulsar.common.intercept.InterceptException; |
| |
| /** |
| * A collection of broker interceptor. |
| */ |
| @Slf4j |
| public class BrokerInterceptors implements BrokerInterceptor { |
| |
| private final Map<String, BrokerInterceptorWithClassLoader> interceptors; |
| |
| public BrokerInterceptors(Map<String, BrokerInterceptorWithClassLoader> interceptors) { |
| this.interceptors = interceptors; |
| } |
| |
| /** |
| * Load the broker event interceptor for the given <tt>interceptor</tt> list. |
| * |
| * @param conf the pulsar broker service configuration |
| * @return the collection of broker event interceptor |
| */ |
| public static BrokerInterceptor load(ServiceConfiguration conf) throws IOException { |
| BrokerInterceptorDefinitions definitions = |
| BrokerInterceptorUtils.searchForInterceptors(conf.getBrokerInterceptorsDirectory(), |
| conf.getNarExtractionDirectory()); |
| |
| ImmutableMap.Builder<String, BrokerInterceptorWithClassLoader> builder = ImmutableMap.builder(); |
| |
| conf.getBrokerInterceptors().forEach(interceptorName -> { |
| |
| BrokerInterceptorMetadata definition = definitions.interceptors().get(interceptorName); |
| if (null == definition) { |
| throw new RuntimeException("No broker interceptor is found for name `" + interceptorName |
| + "`. Available broker interceptors are : " + definitions.interceptors()); |
| } |
| |
| BrokerInterceptorWithClassLoader interceptor; |
| try { |
| interceptor = BrokerInterceptorUtils.load(definition, conf.getNarExtractionDirectory()); |
| if (interceptor != null) { |
| builder.put(interceptorName, interceptor); |
| } |
| log.info("Successfully loaded broker interceptor for name `{}`", interceptorName); |
| } catch (IOException e) { |
| log.error("Failed to load the broker interceptor for name `" + interceptorName + "`", e); |
| throw new RuntimeException("Failed to load the broker interceptor for name `" + interceptorName + "`"); |
| } |
| }); |
| |
| Map<String, BrokerInterceptorWithClassLoader> interceptors = builder.build(); |
| if (interceptors != null && !interceptors.isEmpty()) { |
| return new BrokerInterceptors(interceptors); |
| } else { |
| return DISABLED; |
| } |
| } |
| |
| @Override |
| public void beforeSendMessage(Subscription subscription, |
| Entry entry, |
| long[] ackSet, |
| MessageMetadata msgMetadata) { |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.beforeSendMessage( |
| subscription, |
| entry, |
| ackSet, |
| msgMetadata); |
| } |
| } |
| |
| @Override |
| public void consumerCreated(ServerCnx cnx, |
| Consumer consumer, |
| Map<String, String> metadata) { |
| if (interceptors == null || interceptors.isEmpty()) { |
| return; |
| } |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.consumerCreated( |
| cnx, |
| consumer, |
| metadata); |
| } |
| } |
| |
| @Override |
| public void producerCreated(ServerCnx cnx, Producer producer, |
| Map<String, String> metadata){ |
| if (interceptors == null || interceptors.isEmpty()) { |
| return; |
| } |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.producerCreated(cnx, producer, metadata); |
| } |
| } |
| |
| @Override |
| public void messageProduced(ServerCnx cnx, Producer producer, long startTimeNs, long ledgerId, |
| long entryId, Topic.PublishContext publishContext) { |
| if (interceptors == null || interceptors.isEmpty()) { |
| return; |
| } |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.messageProduced(cnx, producer, startTimeNs, ledgerId, entryId, publishContext); |
| } |
| } |
| |
| @Override |
| public void messageDispatched(ServerCnx cnx, Consumer consumer, long ledgerId, |
| long entryId, ByteBuf headersAndPayload) { |
| if (interceptors == null || interceptors.isEmpty()) { |
| return; |
| } |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.messageDispatched(cnx, consumer, ledgerId, entryId, headersAndPayload); |
| } |
| } |
| |
| @Override |
| public void messageAcked(ServerCnx cnx, Consumer consumer, |
| CommandAck ackCmd) { |
| if (interceptors == null || interceptors.isEmpty()) { |
| return; |
| } |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.messageAcked(cnx, consumer, ackCmd); |
| } |
| } |
| |
| @Override |
| public void onConnectionCreated(ServerCnx cnx) { |
| if (interceptors == null || interceptors.isEmpty()) { |
| return; |
| } |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.onConnectionCreated(cnx); |
| } |
| } |
| |
| @Override |
| public void onPulsarCommand(BaseCommand command, ServerCnx cnx) throws InterceptException { |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.onPulsarCommand(command, cnx); |
| } |
| } |
| |
| @Override |
| public void onConnectionClosed(ServerCnx cnx) { |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.onConnectionClosed(cnx); |
| } |
| } |
| |
| @Override |
| public void onWebserviceRequest(ServletRequest request) throws IOException, ServletException, InterceptException { |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.onWebserviceRequest(request); |
| } |
| } |
| |
| @Override |
| public void onWebserviceResponse(ServletRequest request, ServletResponse response) |
| throws IOException, ServletException { |
| for (BrokerInterceptorWithClassLoader value : interceptors.values()) { |
| value.onWebserviceResponse(request, response); |
| } |
| } |
| |
| @Override |
| public void initialize(PulsarService pulsarService) throws Exception { |
| for (BrokerInterceptorWithClassLoader v : interceptors.values()) { |
| v.initialize(pulsarService); |
| } |
| } |
| |
| @Override |
| public void close() { |
| interceptors.values().forEach(BrokerInterceptorWithClassLoader::close); |
| } |
| } |