-
Notifications
You must be signed in to change notification settings - Fork 4
/
RabbitMQSourceConfig.scala
65 lines (56 loc) · 1.88 KB
/
RabbitMQSourceConfig.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
package io.epiphanous.flinkrunner.model.source
import io.epiphanous.flinkrunner.model.{
FlinkConfig,
FlinkConnectorName,
FlinkEvent,
RabbitMQConnectionInfo
}
import io.epiphanous.flinkrunner.serde.JsonRMQDeserializationSchema
import org.apache.flink.api.common.typeinfo.TypeInformation
import org.apache.flink.api.connector.source.{Source, SourceSplit}
import org.apache.flink.streaming.api.functions.source.SourceFunction
import org.apache.flink.streaming.connectors.rabbitmq.{
RMQDeserializationSchema,
RMQSource
}
/** Source configuration for Rabbit MQ.
* @param name
* name of the source
* @param config
* flinkrunner config
* @tparam ADT
* flinkrunner algebraic data type
*/
case class RabbitMQSourceConfig[ADT <: FlinkEvent](
name: String,
config: FlinkConfig
) extends SourceConfig[ADT] {
override val connector: FlinkConnectorName = FlinkConnectorName.RabbitMQ
override lazy val parallelism: Int = 1 // ensure exactly once
val uri: String = config.getString(pfx("uri"))
val useCorrelationId: Boolean =
config.getBoolean(pfx("use.correlation.id"))
val queue: String = config.getString(pfx("queue"))
val connectionInfo: RabbitMQConnectionInfo =
RabbitMQConnectionInfo(uri, properties)
/** Return a deserialization schema for rabbit mq. This implementation
* assumes a JSON fomatted messages in rabbit.
* @tparam E
* event type
* @return
* RMQDeserializationSchema[E]
*/
def getDeserializationSchema[E <: ADT: TypeInformation]
: RMQDeserializationSchema[E] =
new JsonRMQDeserializationSchema[E, ADT](this)
override def getSource[E <: ADT: TypeInformation]
: Either[SourceFunction[E], Source[E, _ <: SourceSplit, _]] =
Left(
new RMQSource[E](
connectionInfo.rmqConfig,
queue,
useCorrelationId,
getDeserializationSchema
)
)
}