/*
* Copyright (c) 2015 Spotify AB.
*
* 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 com.spotify.heroic.profile;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.spotify.heroic.ExtraParameters;
import com.spotify.heroic.HeroicConfig;
import com.spotify.heroic.ParameterSpecification;
import com.spotify.heroic.consumer.ConsumerModule;
import com.spotify.heroic.consumer.kafka.KafkaConsumerModule;
import java.util.List;
import java.util.Optional;
import static com.spotify.heroic.ParameterSpecification.parameter;
public class KafkaConsumerProfile extends HeroicProfileBase {
private final Splitter splitter = Splitter.on(",").trimResults();
@Override
public HeroicConfig.Builder build(final ExtraParameters params) throws Exception {
final ImmutableMap.Builder<String, String> config = ImmutableMap.builder();
config.put("zookeeper.connect", params.require("zookeeper"));
config.put("group.id", params.require("group"));
final KafkaConsumerModule.Builder module =
KafkaConsumerModule.builder().config(config.build());
module.schema(params.require("schema"));
params
.get("topics")
.map(splitter::split)
.map(topics -> module.topics(ImmutableList.copyOf(topics)));
// @formatter:off
return HeroicConfig.builder()
.consumers(ImmutableList.<ConsumerModule.Builder>builder().add(module).build());
// @formatter:on
}
@Override
public Optional<String> scope() {
return Optional.of("kafka");
}
@Override
public String description() {
return "Configures a consumer for Kafka";
}
@Override
public List<ParameterSpecification> options() {
// @formatter:off
return ImmutableList.of(
parameter("zookeeper", "Connection string to Zookeeper", "<url>[,..][/prefix]"),
parameter("group", "Consumer Group", "<group>"),
parameter("topics", "Topics to consume from", "<topic>[,..]"),
parameter("schema", "Schema Class to use", "<schema>")
);
// @formatter:on
}
}