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Fixes #3799: Apache Kafka procedures
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| package apoc.kafka | ||
|
|
||
| import apoc.ApocConfig | ||
| import apoc.ExtendedApocConfig.APOC_KAFKA_ENABLED | ||
| import apoc.kafka.config.StreamsConfig | ||
| import apoc.kafka.consumer.StreamsSinkConfigurationListener | ||
| import apoc.kafka.producer.StreamsRouterConfigurationListener | ||
| import org.neo4j.kernel.internal.GraphDatabaseAPI | ||
| import org.neo4j.kernel.lifecycle.LifecycleAdapter | ||
| import org.neo4j.logging.Log | ||
|
|
||
| class KafkaHandler(): LifecycleAdapter() { | ||
|
|
||
| private lateinit var db: GraphDatabaseAPI | ||
| private lateinit var log: Log | ||
|
|
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| constructor(db: GraphDatabaseAPI, log: Log) : this() { | ||
| this.db = db | ||
| this.log = log | ||
| } | ||
|
|
||
| override fun start() { | ||
| if(ApocConfig.apocConfig().getBoolean(APOC_KAFKA_ENABLED)) { | ||
| // println("start db......") | ||
|
|
||
| try { | ||
| StreamsRouterConfigurationListener(db, log) | ||
| .start(StreamsConfig.getConfiguration()) | ||
| } catch (e: Exception) { | ||
| log.error("Exception in StreamsRouterConfigurationListener {}", e.message) | ||
| } | ||
|
|
||
| try { | ||
| StreamsSinkConfigurationListener(db, log) | ||
| .start(StreamsConfig.getConfiguration()) | ||
| } catch (e: Exception) { | ||
| log.error("Exception in StreamsSinkConfigurationListener {}", e.message) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| override fun stop() { | ||
| if(ApocConfig.apocConfig().getBoolean(APOC_KAFKA_ENABLED)) { | ||
| // println("stop db..........") | ||
|
|
||
| StreamsRouterConfigurationListener(db, log).shutdown() | ||
| StreamsSinkConfigurationListener(db, log).shutdown() | ||
| } | ||
| } | ||
| } |
43 changes: 43 additions & 0 deletions
43
extended/src/main/kotlin/apoc/kafka/Neo4jStreamsStrategyStorage.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| //package apoc.kafka | ||
| // | ||
| //import apoc.kafka.consumer.StreamsSinkConfiguration | ||
| //import apoc.kafka.consumer.StreamsTopicService | ||
| //import apoc.kafka.extensions.isDefaultDb | ||
| //import apoc.kafka.service.StreamsStrategyStorage | ||
| //import apoc.kafka.service.TopicType | ||
| //import apoc.kafka.service.sink.strategy.* | ||
| //import org.neo4j.graphdb.GraphDatabaseService | ||
| // | ||
| //class Neo4jStreamsStrategyStorage(private val streamsTopicService: StreamsTopicService, | ||
| // private val streamsConfig: Map<String, String>, | ||
| // private val db: GraphDatabaseService): StreamsStrategyStorage() { | ||
| // | ||
| // override fun getTopicType(topic: String): TopicType? { | ||
| // return streamsTopicService.getTopicType(topic) | ||
| // } | ||
| // | ||
| // private fun <T> getTopicsByTopicType(topicType: TopicType): T = streamsTopicService.getByTopicType(topicType) as T | ||
| // | ||
| // override fun getStrategy(topic: String): IngestionStrategy = when (val topicType = getTopicType(topic)) { | ||
| // TopicType.CDC_SOURCE_ID -> { | ||
| // val strategyConfig = StreamsSinkConfiguration | ||
| // .createSourceIdIngestionStrategyConfig(streamsConfig, db.databaseName(), db.isDefaultDb()) | ||
| // SourceIdIngestionStrategy(strategyConfig) | ||
| // } | ||
| // TopicType.CDC_SCHEMA -> SchemaIngestionStrategy() | ||
| // TopicType.CUD -> CUDIngestionStrategy() | ||
| // TopicType.PATTERN_NODE -> { | ||
| // val map = getTopicsByTopicType<Map<String, NodePatternConfiguration>>(topicType) | ||
| // NodePatternIngestionStrategy(map.getValue(topic)) | ||
| // } | ||
| // TopicType.PATTERN_RELATIONSHIP -> { | ||
| // val map = getTopicsByTopicType<Map<String, RelationshipPatternConfiguration>>(topicType) | ||
| // RelationshipPatternIngestionStrategy(map.getValue(topic)) | ||
| // } | ||
| // TopicType.CYPHER -> { | ||
| // CypherTemplateStrategy(streamsTopicService.getCypherTemplate(topic)!!) | ||
| // } | ||
| // else -> throw RuntimeException("Topic Type not Found") | ||
| // } | ||
| // | ||
| //} |
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