measure/src/main/scala/org/apache/griffin/measure/job/builder/DQJobBuilder.scala

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to you under the Apache License, Version 2.0 (the
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  http://www.apache.org/licenses/LICENSE-2.0

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package org.apache.griffin.measure.job.builder

import org.apache.griffin.measure.configuration.dqdefinition._
import org.apache.griffin.measure.context.DQContext
import org.apache.griffin.measure.job._
import org.apache.griffin.measure.step.builder.DQStepBuilder
import org.apache.griffin.measure.step.write.MetricFlushStep

/**
  * build dq job based on configuration
  */
object DQJobBuilder {

  /**
    * build dq job with rule param
    * @param context              dq context
    * @param evaluateRuleParam    evaluate rule param
    * @return       dq job
    */
  def buildDQJob(context: DQContext, evaluateRuleParam: EvaluateRuleParam): DQJob = {
    val ruleParams = evaluateRuleParam.getRules
    buildDQJob(context, ruleParams)
  }

  /**
    * build dq job with rules in evaluate rule param or pre-proc param
    * @param context          dq context
    * @param ruleParams       rule params
    * @return       dq job
    */
  def buildDQJob(context: DQContext, ruleParams: Seq[RuleParam]): DQJob = {
    // build steps by datasources
    val dsSteps = context.dataSources.flatMap { dataSource =>
      DQStepBuilder.buildStepOptByDataSourceParam(context, dataSource.dsParam)
    }
    // build steps by rules
    val ruleSteps = ruleParams.flatMap { ruleParam =>
      DQStepBuilder.buildStepOptByRuleParam(context, ruleParam)
    }
    // metric flush step
    val metricFlushStep = MetricFlushStep()

    DQJob(dsSteps ++ ruleSteps :+ metricFlushStep)
  }

}