| // Copyright (C) 2016 The Android Open Source Project |
| // |
| // Licensed 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 com.googlesource.gerrit.plugins.kafka.config; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.base.CaseFormat; |
| import com.google.common.base.Strings; |
| import com.google.gerrit.common.Nullable; |
| import com.google.gerrit.extensions.annotations.PluginName; |
| import com.google.gerrit.server.config.ConfigUtil; |
| import com.google.gerrit.server.config.PluginConfig; |
| import com.google.gerrit.server.config.PluginConfigFactory; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.time.Duration; |
| import java.util.UUID; |
| import java.util.concurrent.TimeUnit; |
| import org.apache.kafka.clients.consumer.ConsumerConfig; |
| import org.apache.kafka.clients.producer.ProducerConfig; |
| import org.apache.kafka.common.serialization.StringSerializer; |
| |
| @Singleton |
| public class KafkaProperties extends java.util.Properties { |
| public static final String REST_API_URI_ID_PLACEHOLDER = "${kafka_rest_id}"; |
| |
| private static final String PROPERTY_HTTP_WIRE_LOG = "httpWireLog"; |
| private static final boolean DEFAULT_HTTP_WIRE_LOG = false; |
| private static final String PROPERTY_REST_API_URI = "restApiUri"; |
| private static final String PROPERTY_REST_API_TIMEOUT = "restApiTimeout"; |
| private static final Duration DEFAULT_REST_API_TIMEOUT = Duration.ofSeconds(60); |
| private static final String PROPERTY_REST_API_THREADS = "restApiThreads"; |
| private static final int DEFAULT_REST_API_THREADS = 10; |
| private static final String PROPERTY_CLIENT_TYPE = "clientType"; |
| private static final ClientType DEFAULT_CLIENT_TYPE = ClientType.NATIVE; |
| private static final String PROPERTY_SEND_ASYNC = "sendAsync"; |
| private static final boolean DEFAULT_SEND_ASYNC = true; |
| private static final String PROPERTY_STREAM_EVENTS_TOPIC_NAME = "topic"; |
| private static final String DEFAULT_STREAM_EVENTS_TOPIC_NAME = "gerrit"; |
| |
| private static final long serialVersionUID = 0L; |
| |
| public static final String KAFKA_STRING_SERIALIZER = StringSerializer.class.getName(); |
| |
| public enum ClientType { |
| NATIVE, |
| REST; |
| } |
| |
| private final String topic; |
| private final boolean sendAsync; |
| private final ClientType clientType; |
| private final String restApiUriString; |
| private final boolean httpWireLog; |
| private final Duration restApiTimeout; |
| private final int restApiThreads; |
| |
| @Inject |
| public KafkaProperties(PluginConfigFactory configFactory, @PluginName String pluginName) { |
| super(); |
| setDefaults(); |
| PluginConfig fromGerritConfig = configFactory.getFromGerritConfig(pluginName); |
| topic = |
| fromGerritConfig.getString( |
| PROPERTY_STREAM_EVENTS_TOPIC_NAME, DEFAULT_STREAM_EVENTS_TOPIC_NAME); |
| sendAsync = fromGerritConfig.getBoolean(PROPERTY_SEND_ASYNC, DEFAULT_SEND_ASYNC); |
| clientType = fromGerritConfig.getEnum(PROPERTY_CLIENT_TYPE, DEFAULT_CLIENT_TYPE); |
| |
| switch (clientType) { |
| case REST: |
| restApiUriString = fromGerritConfig.getString(PROPERTY_REST_API_URI); |
| if (Strings.isNullOrEmpty(restApiUriString)) { |
| throw new IllegalArgumentException("Missing REST API URI in Kafka properties"); |
| } |
| |
| httpWireLog = fromGerritConfig.getBoolean(PROPERTY_HTTP_WIRE_LOG, DEFAULT_HTTP_WIRE_LOG); |
| restApiTimeout = |
| Duration.ofMillis( |
| ConfigUtil.getTimeUnit( |
| fromGerritConfig.getString(PROPERTY_REST_API_TIMEOUT), |
| DEFAULT_REST_API_TIMEOUT.toMillis(), |
| TimeUnit.MILLISECONDS)); |
| restApiThreads = |
| fromGerritConfig.getInt(PROPERTY_REST_API_THREADS, DEFAULT_REST_API_THREADS); |
| break; |
| case NATIVE: |
| default: |
| restApiUriString = null; |
| httpWireLog = false; |
| restApiTimeout = null; |
| restApiThreads = 0; |
| break; |
| } |
| |
| applyConfig(fromGerritConfig); |
| initDockerizedKafkaServer(); |
| } |
| |
| @VisibleForTesting |
| public KafkaProperties( |
| boolean sendAsync, ClientType clientType, @Nullable String restApiUriString) { |
| super(); |
| setDefaults(); |
| topic = DEFAULT_STREAM_EVENTS_TOPIC_NAME; |
| this.sendAsync = sendAsync; |
| this.clientType = clientType; |
| this.restApiUriString = restApiUriString; |
| initDockerizedKafkaServer(); |
| this.httpWireLog = false; |
| restApiTimeout = DEFAULT_REST_API_TIMEOUT; |
| restApiThreads = DEFAULT_REST_API_THREADS; |
| } |
| |
| private void setDefaults() { |
| put("acks", "all"); |
| put("retries", 0); |
| put("batch.size", 16384); |
| put("linger.ms", 1); |
| put("buffer.memory", 33554432); |
| put("key.serializer", KAFKA_STRING_SERIALIZER); |
| put("value.serializer", KAFKA_STRING_SERIALIZER); |
| put("reconnect.backoff.ms", 5000L); |
| } |
| |
| private void applyConfig(PluginConfig config) { |
| for (String name : config.getNames()) { |
| Object value = config.getString(name); |
| String propName = |
| CaseFormat.LOWER_CAMEL.to(CaseFormat.LOWER_HYPHEN, name).replaceAll("-", "."); |
| put(propName, value); |
| } |
| } |
| |
| /** Bootstrap initialization of dockerized Kafka server environment */ |
| private void initDockerizedKafkaServer() { |
| String testBootstrapServer = System.getProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG); |
| if (!Strings.isNullOrEmpty(testBootstrapServer)) { |
| this.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, testBootstrapServer); |
| this.put(ProducerConfig.CLIENT_ID_CONFIG, UUID.randomUUID().toString()); |
| this.put(ConsumerConfig.GROUP_ID_CONFIG, "tc-" + UUID.randomUUID()); |
| this.put(ConsumerConfig.HEARTBEAT_INTERVAL_MS_CONFIG, "1000"); |
| this.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest"); |
| } |
| } |
| |
| public String getTopic() { |
| return topic; |
| } |
| |
| public boolean isSendAsync() { |
| return sendAsync; |
| } |
| |
| public String getBootstrapServers() { |
| return getProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG); |
| } |
| |
| public ClientType getClientType() { |
| return clientType; |
| } |
| |
| public URI getRestApiUri() throws URISyntaxException { |
| return getRestApiUri(""); |
| } |
| |
| public URI getRestApiUri(String kafkaRestId) throws URISyntaxException { |
| return new URI(restApiUriString.replace(REST_API_URI_ID_PLACEHOLDER, kafkaRestId)); |
| } |
| |
| public boolean isHttpWireLog() { |
| return httpWireLog; |
| } |
| |
| public Duration getRestApiTimeout() { |
| return restApiTimeout; |
| } |
| |
| public int getRestApiThreads() { |
| return restApiThreads; |
| } |
| } |