diff options
author | kjaniak <kornel.janiak@nokia.com> | 2019-06-19 08:39:33 +0200 |
---|---|---|
committer | kjaniak <kornel.janiak@nokia.com> | 2019-06-25 15:52:13 +0200 |
commit | 7808010c1a18531ee9b618f934d31816193cac38 (patch) | |
tree | 3680678be6f909054ff3a022aeda35b1ee5e47ac /sources/hv-collector-kafka/src/main | |
parent | e52b0ef6c1c3b502f840f08a17b6594e17957db1 (diff) |
Implement message counting in consumer
Issue-ID: DCAEGEN2-1635
Change-Id: I2666de7bad27052d9cefa0f687ad0772d4c9a95d
Signed-off-by: kjaniak <kornel.janiak@nokia.com>
Diffstat (limited to 'sources/hv-collector-kafka/src/main')
3 files changed, 148 insertions, 0 deletions
diff --git a/sources/hv-collector-kafka/src/main/kotlin/org/onap/dcae/collectors/veshv/kafka/api/ConsumerFactory.kt b/sources/hv-collector-kafka/src/main/kotlin/org/onap/dcae/collectors/veshv/kafka/api/ConsumerFactory.kt new file mode 100644 index 00000000..88eb8cec --- /dev/null +++ b/sources/hv-collector-kafka/src/main/kotlin/org/onap/dcae/collectors/veshv/kafka/api/ConsumerFactory.kt @@ -0,0 +1,43 @@ +/* + * ============LICENSE_START======================================================= + * dcaegen2-collectors-veshv + * ================================================================================ + * Copyright (C) 2018-2019 NOKIA + * ================================================================================ + * 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. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.veshv.kafka.api + +import org.onap.dcae.collectors.veshv.kafka.impl.KafkaSource +import org.onap.dcae.collectors.veshv.utils.logging.Logger + +typealias ConsumerProvider = () -> KafkaConsumer + +object ConsumerFactory { + private val logger = Logger(ConsumerFactory::class) + + fun createConsumersForTopics(kafkaBootstrapServers: String, + kafkaTopics: Set<String>, + consumerProvider: ConsumerProvider): Map<String, KafkaConsumer> = + KafkaSource.create(kafkaBootstrapServers, kafkaTopics).let { kafkaSource -> + val topicToConsumer = kafkaTopics.associate { it to consumerProvider() } + kafkaSource.start() + .map { + val topic = it.topic() + topicToConsumer.get(topic)?.update(it) + ?: logger.warn { "No consumer configured for topic $topic" } + }.subscribe() + topicToConsumer + } +} diff --git a/sources/hv-collector-kafka/src/main/kotlin/org/onap/dcae/collectors/veshv/kafka/api/KafkaConsumer.kt b/sources/hv-collector-kafka/src/main/kotlin/org/onap/dcae/collectors/veshv/kafka/api/KafkaConsumer.kt new file mode 100644 index 00000000..ae797b6e --- /dev/null +++ b/sources/hv-collector-kafka/src/main/kotlin/org/onap/dcae/collectors/veshv/kafka/api/KafkaConsumer.kt @@ -0,0 +1,27 @@ +/* + * ============LICENSE_START======================================================= + * dcaegen2-collectors-veshv + * ================================================================================ + * Copyright (C) 2018-2019 NOKIA + * ================================================================================ + * 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. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.veshv.kafka.api + +import org.apache.kafka.clients.consumer.ConsumerRecord + +interface KafkaConsumer { + fun reset() + fun update(record: ConsumerRecord<ByteArray, ByteArray>) +} diff --git a/sources/hv-collector-kafka/src/main/kotlin/org/onap/dcae/collectors/veshv/kafka/impl/KafkaSource.kt b/sources/hv-collector-kafka/src/main/kotlin/org/onap/dcae/collectors/veshv/kafka/impl/KafkaSource.kt new file mode 100644 index 00000000..98934b0d --- /dev/null +++ b/sources/hv-collector-kafka/src/main/kotlin/org/onap/dcae/collectors/veshv/kafka/impl/KafkaSource.kt @@ -0,0 +1,78 @@ +/* + * ============LICENSE_START======================================================= + * dcaegen2-collectors-veshv + * ================================================================================ + * Copyright (C) 2018,2019 NOKIA + * ================================================================================ + * 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. + * ============LICENSE_END========================================================= + */ +package org.onap.dcae.collectors.veshv.kafka.impl + +import org.apache.kafka.clients.CommonClientConfigs +import org.apache.kafka.clients.consumer.ConsumerConfig +import org.apache.kafka.common.config.SaslConfigs +import org.apache.kafka.common.security.auth.SecurityProtocol +import org.apache.kafka.common.security.plain.internals.PlainSaslServer.PLAIN_MECHANISM +import org.apache.kafka.common.serialization.ByteArrayDeserializer +import org.onap.dcae.collectors.veshv.utils.logging.Logger +import reactor.core.publisher.Flux +import reactor.kafka.receiver.KafkaReceiver +import reactor.kafka.receiver.ReceiverOptions +import reactor.kafka.receiver.ReceiverRecord + +/** + * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com> + * @since May 2018 + */ +internal class KafkaSource(private val receiver: KafkaReceiver<ByteArray, ByteArray>) { + fun start(): Flux<ReceiverRecord<ByteArray, ByteArray>> = + receiver.receive() + .doOnNext { it.receiverOffset().acknowledge() } + .also { logger.info { "Started Kafka source" } } + + companion object { + private val logger = Logger(KafkaSource::class) + + private const val LOGIN_MODULE_CLASS = "org.apache.kafka.common.security.plain.PlainLoginModule" + private const val USERNAME = "admin" + private const val PASSWORD = "admin_secret" + private const val JAAS_CONFIG = "$LOGIN_MODULE_CLASS required username=$USERNAME password=$PASSWORD;" + private val SASL_PLAINTEXT = (SecurityProtocol.SASL_PLAINTEXT as Enum<SecurityProtocol>).name + + fun create(bootstrapServers: String, topics: Set<String>) = + KafkaSource(KafkaReceiver.create(createReceiverOptions(bootstrapServers, topics))) + + fun createReceiverOptions(bootstrapServers: String, + topics: Set<String>): ReceiverOptions<ByteArray, ByteArray>? { + val props = mapOf<String, Any>( + ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG to bootstrapServers, + ConsumerConfig.CLIENT_ID_CONFIG to "hv-collector-consumer", + ConsumerConfig.GROUP_ID_CONFIG to "hv-collector-consumers", + ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG to ByteArrayDeserializer::class.java, + ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG to ByteArrayDeserializer::class.java, + ConsumerConfig.AUTO_OFFSET_RESET_CONFIG to "earliest", + ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG to "3000", + + + CommonClientConfigs.SECURITY_PROTOCOL_CONFIG to SASL_PLAINTEXT, + SaslConfigs.SASL_MECHANISM to PLAIN_MECHANISM, + SaslConfigs.SASL_JAAS_CONFIG to JAAS_CONFIG + ) + return ReceiverOptions.create<ByteArray, ByteArray>(props) + .addAssignListener { partitions -> logger.debug { "Partitions assigned $partitions" } } + .addRevokeListener { partitions -> logger.debug { "Partitions revoked $partitions" } } + .subscription(topics) + } + } +} |