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[NU-1800] Add TemplateEvaluationResult to evaluate SpEL expression pa…
…rts in LazyParameter (#7162) Add TemplateEvaluationResult to evaluate SpEL expression parts in LazyParameter --------- Co-authored-by: Arek Burdach <[email protected]>
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components-api/src/main/scala/pl/touk/nussknacker/engine/api/TemplateEvaluationResult.scala
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| @@ -0,0 +1,15 @@ | ||
| package pl.touk.nussknacker.engine.api | ||
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| case class TemplateEvaluationResult(renderedParts: List[TemplateRenderedPart]) { | ||
| def renderedTemplate: String = renderedParts.map(_.value).mkString("") | ||
| } | ||
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| sealed trait TemplateRenderedPart { | ||
| def value: String | ||
| } | ||
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| object TemplateRenderedPart { | ||
| case class RenderedLiteral(value: String) extends TemplateRenderedPart | ||
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| case class RenderedSubExpression(value: String) extends TemplateRenderedPart | ||
| } |
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...tests/src/test/scala/pl/touk/nussknacker/engine/flink/SpelTemplateLazyParameterTest.scala
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| Original file line number | Diff line number | Diff line change |
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| package pl.touk.nussknacker.engine.flink | ||
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| import com.typesafe.config.ConfigFactory | ||
| import org.apache.flink.api.common.functions.FlatMapFunction | ||
| import org.apache.flink.api.connector.source.Boundedness | ||
| import org.apache.flink.streaming.api.datastream.DataStream | ||
| import org.apache.flink.util.Collector | ||
| import org.scalatest.funsuite.AnyFunSuite | ||
| import org.scalatest.matchers.should.Matchers | ||
| import pl.touk.nussknacker.engine.api.TemplateRenderedPart.{RenderedLiteral, RenderedSubExpression} | ||
| import pl.touk.nussknacker.engine.api._ | ||
| import pl.touk.nussknacker.engine.api.component.{BoundedStreamComponent, ComponentDefinition} | ||
| import pl.touk.nussknacker.engine.api.context.ValidationContext | ||
| import pl.touk.nussknacker.engine.api.context.transformation.{DefinedLazyParameter, NodeDependencyValue, SingleInputDynamicComponent} | ||
| import pl.touk.nussknacker.engine.api.definition.{NodeDependency, OutputVariableNameDependency, Parameter, SpelTemplateParameterEditor} | ||
| import pl.touk.nussknacker.engine.api.parameter.ParameterName | ||
| import pl.touk.nussknacker.engine.api.typed.typing.Typed | ||
| import pl.touk.nussknacker.engine.build.ScenarioBuilder | ||
| import pl.touk.nussknacker.engine.flink.api.process.{AbstractOneParamLazyParameterFunction, FlinkCustomNodeContext, FlinkCustomStreamTransformation} | ||
| import pl.touk.nussknacker.engine.flink.test.FlinkSpec | ||
| import pl.touk.nussknacker.engine.flink.util.test.FlinkTestScenarioRunner._ | ||
| import pl.touk.nussknacker.engine.graph.expression.Expression | ||
| import pl.touk.nussknacker.engine.process.FlinkJobConfig.ExecutionMode | ||
| import pl.touk.nussknacker.engine.spel.SpelExtension._ | ||
| import pl.touk.nussknacker.engine.util.test.TestScenarioRunner | ||
| import pl.touk.nussknacker.test.ValidatedValuesDetailedMessage | ||
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| class SpelTemplateLazyParameterTest extends AnyFunSuite with FlinkSpec with Matchers with ValidatedValuesDetailedMessage { | ||
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| private lazy val runner = TestScenarioRunner | ||
| .flinkBased(ConfigFactory.empty(), flinkMiniCluster) | ||
| .withExecutionMode(ExecutionMode.Batch) | ||
| .withExtraComponents( | ||
| List(ComponentDefinition("spelTemplatePartsCustomTransformer", SpelTemplatePartsCustomTransformer)) | ||
| ) | ||
| .build() | ||
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| test("flink custom transformer using spel template rendered parts") { | ||
| val scenario = ScenarioBuilder | ||
| .streaming("test") | ||
| .source("source", TestScenarioRunner.testDataSource) | ||
| .customNode( | ||
| "custom", | ||
| "output", | ||
| "spelTemplatePartsCustomTransformer", | ||
| "template" -> Expression.spelTemplate(s"Hello#{#input}") | ||
| ) | ||
| .emptySink("sink", TestScenarioRunner.testResultSink, "value" -> "#output".spel) | ||
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| val result = runner.runWithData(scenario, List(1, 2, 3), Boundedness.BOUNDED) | ||
| result.validValue.errors shouldBe empty | ||
| result.validValue.successes shouldBe List( | ||
| "[Hello]-literal[1]-subexpression", | ||
| "[Hello]-literal[2]-subexpression", | ||
| "[Hello]-literal[3]-subexpression" | ||
| ) | ||
| } | ||
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| } | ||
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| object SpelTemplatePartsCustomTransformer | ||
| extends CustomStreamTransformer | ||
| with SingleInputDynamicComponent[FlinkCustomStreamTransformation] | ||
| with BoundedStreamComponent { | ||
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| private val spelTemplateParameterName = ParameterName("template") | ||
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| private val spelTemplateParameter = Parameter | ||
| .optional[String](spelTemplateParameterName) | ||
| .copy( | ||
| isLazyParameter = true, | ||
| editor = Some(SpelTemplateParameterEditor) | ||
| ) | ||
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| override type State = Unit | ||
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| override def contextTransformation(context: ValidationContext, dependencies: List[NodeDependencyValue])( | ||
| implicit nodeId: NodeId | ||
| ): SpelTemplatePartsCustomTransformer.ContextTransformationDefinition = { | ||
| case TransformationStep(Nil, _) => NextParameters(List(spelTemplateParameter)) | ||
| case TransformationStep((`spelTemplateParameterName`, DefinedLazyParameter(_)) :: Nil, _) => | ||
| val outName = OutputVariableNameDependency.extract(dependencies) | ||
| FinalResults(context.withVariableUnsafe(outName, Typed[String]), List.empty) | ||
| } | ||
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| override def nodeDependencies: List[NodeDependency] = List(OutputVariableNameDependency) | ||
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| override def implementation( | ||
| params: Params, | ||
| dependencies: List[NodeDependencyValue], | ||
| finalState: Option[Unit] | ||
| ): FlinkCustomStreamTransformation = { | ||
| val templateLazyParam: LazyParameter[TemplateEvaluationResult] = | ||
| params.extractUnsafe[LazyParameter[TemplateEvaluationResult]](spelTemplateParameterName) | ||
| FlinkCustomStreamTransformation { | ||
| (dataStream: DataStream[Context], flinkCustomNodeContext: FlinkCustomNodeContext) => | ||
| dataStream.flatMap( | ||
| new AbstractOneParamLazyParameterFunction[TemplateEvaluationResult]( | ||
| templateLazyParam, | ||
| flinkCustomNodeContext.lazyParameterHelper | ||
| ) with FlatMapFunction[Context, ValueWithContext[String]] { | ||
| override def flatMap(value: Context, out: Collector[ValueWithContext[String]]): Unit = { | ||
| collectHandlingErrors(value, out) { | ||
| val templateResult = evaluateParameter(value) | ||
| val result = templateResult.renderedParts.map { | ||
| case RenderedLiteral(value) => s"[$value]-literal" | ||
| case RenderedSubExpression(value) => s"[$value]-subexpression" | ||
| }.mkString | ||
| ValueWithContext(result, value) | ||
| } | ||
| } | ||
| }, | ||
| flinkCustomNodeContext.valueWithContextInfo.forClass[String] | ||
| ).asInstanceOf[DataStream[ValueWithContext[AnyRef]]] | ||
| } | ||
| } | ||
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| } |
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