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Kafka metadata logs #22

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Kafka metadata logs #22

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c0ce63f
correctly log metadata response
mraulim Sep 14, 2018
900d6a5
Merge branch 'series/0.4' of github.com:Spinoco/fs2-kafka into kafka-…
mraulim Oct 14, 2018
c621dc0
series/0.4 complatible
mraulim Oct 14, 2018
f6f10fb
add Detail to logs
mraulim Oct 15, 2018
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15 changes: 10 additions & 5 deletions src/main/scala/spinoco/fs2/kafka/KafkaClient.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -396,17 +396,22 @@ object KafkaClient {
* @tparam F
* @return
*/
def leaderFor[F[_] : Sync](
def leaderFor[F[_]: Sync : Log](
requestMeta: (BrokerAddress, MetadataRequest) => F[MetadataResponse]
, seed: Seq[BrokerAddress]
)(topicId: String @@ TopicName, partition: Int @@ PartitionId) :F[Option[BrokerAddress]] = {
)(topicId: String @@ TopicName, partition: Int @@ PartitionId): F[Option[BrokerAddress]] = {
Stream.emits(seed)
.evalMap { address => requestMeta(address, MetadataRequest(Vector(topicId))).attempt }
.collect { case Right(response) => response }
.map { resp =>
resp.topics.find(_.name == topicId) flatMap { _.partitions.find( _.id == partition)} flatMap {
.flatMap {
case Left(err) => Stream.eval_(Log[F].error(s"Failed to read metadata", Detail(topicId) and partition, thrown = Some(err)))
case Right(response) =>
Stream.eval(Log[F].info(s"Received metadata response for", Detail(topicId) and partition)) as response
}.flatMap { resp =>
val broker = resp.topics.find(_.name == topicId) flatMap { _.partitions.find( _.id == partition)} flatMap {
_.leader flatMap { leaderId => resp.brokers.find { _.nodeId == leaderId } map { b => BrokerAddress(b.host, b.port) } }
}

Stream.eval(Log[F].info(s"New broker for topic", Detail(topicId) and partition and broker)) as broker
}
.collectFirst { case Some(broker) => broker }
.compile
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