001/*
002 * (C) Copyright 2006-2016 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 *
017 * Contributors:
018 *     anechaev
019 */
020package org.nuxeo.runtime.kafka;
021
022import java.util.HashMap;
023import java.util.Map;
024import java.util.Properties;
025import java.util.Set;
026
027import org.apache.commons.logging.Log;
028import org.apache.commons.logging.LogFactory;
029import org.nuxeo.runtime.model.ComponentContext;
030import org.nuxeo.runtime.model.ComponentInstance;
031import org.nuxeo.runtime.model.DefaultComponent;
032
033public class KafkaConfigServiceImpl extends DefaultComponent implements KafkaConfigService {
034    public static final String KAFKA_CONFIG_XP = "kafkaConfig";
035
036    public static final int APPLICATION_STARTED_ORDER = -600;
037
038    private static final Log log = LogFactory.getLog(KafkaConfigServiceImpl.class);
039
040    protected final Map<String, KafkaConfigDescriptor> configs = new HashMap<>();
041
042    @Override
043    public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) {
044        if (extensionPoint.equals(KAFKA_CONFIG_XP)) {
045            KafkaConfigDescriptor descriptor = (KafkaConfigDescriptor) contribution;
046            configs.put(descriptor.name, descriptor);
047            log.info(String.format("Register Kafka contribution: %s", descriptor.name));
048        }
049    }
050
051    @Override
052    public int getApplicationStartedOrder() {
053        // since there is no dependencies, let's start before main nuxeo core services
054        return APPLICATION_STARTED_ORDER;
055    }
056
057    @Override
058    public void deactivate(ComponentContext context) {
059        super.deactivate(context);
060        log.debug("Deactivating service");
061    }
062
063    @Override
064    public void activate(ComponentContext context) {
065        super.activate(context);
066        log.debug("Activating service");
067    }
068
069    @Override
070    public Set<String> listConfigNames() {
071        return configs.keySet();
072    }
073
074    @Override
075    public String getZkServers(String configName) {
076        checkConfigName(configName);
077        return configs.get(configName).zkServers;
078    }
079
080    protected void checkConfigName(String configName) {
081        if (!configs.containsKey(configName)) {
082            throw new IllegalArgumentException("Unknown configuration name: " + configName);
083        }
084    }
085
086    @Override
087    public Properties getProducerProperties(String configName) {
088        checkConfigName(configName);
089        return configs.get(configName).getProducerProperties();
090    }
091
092    @Override
093    public Properties getConsumerProperties(String configName) {
094        checkConfigName(configName);
095        return configs.get(configName).getConsumerProperties();
096    }
097
098    @Override
099    public String getTopicPrefix(String configName) {
100        checkConfigName(configName);
101        return configs.get(configName).getTopicPrefix();
102    }
103}